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Journal articles on the topic '39 bus'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kicinski, Marcin, and Piotr Stasiak. "Ocena realizacji zakładanych zadań przewozowych na przykładzie przedsiębiorstwa publicznego transportu autobusowego ZUK Rokbus sp. z o.o." Autobusy – Technika, Eksploatacja, Systemy Transportowe 3/2013 (March 1, 2013): 555–64. https://doi.org/10.5281/zenodo.2528223.

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ENG: THE PERFORMANCE OF CARRIER'S TASKS RESEARCH IN THE BUS PUBLIC TRANSPORTATION COMPANY ROKBUS SP. Z O.O. The paper presents the results of carrier's tasks research in one of several bus public transportation companies from the Aglomeration of Poznan - ROKBUS Sp. z o.o. from Rokietnica. Authors have done measurements for four bus lines from another towns/villages to Poznan and have designated a several of the most important rates of the transportation systems: travel time, average number of passengers, average number of passengers per route, transport working with a bus passenger, ve

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Soleimani, K., and J. Mazloum. "Considering FACTS in Optimal Transmission Expansion Planning." Engineering, Technology & Applied Science Research 7, no. 5 (2017): 1987–95. https://doi.org/10.5281/zenodo.1037208.

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The expansion of power transmission systems is an important part of the expansion of power systems that requires enormous investment costs. Since the construction of new transmission lines is very expensive, it is necessary to choose the most efficient expansion plan that ensures system security with a minimal number of new lines. In this paper, the role of Flexible AC Transmission System (FACTS) devices in the effective operation and expansion planning of transmission systems is examined. Effort was taken to implement a method based on sensitivity analysis to select the optimal number and loc

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Hussein, Hadi Abdul-Wahid Al-Sadooni, and Hamid Al-Rubayi Rashid. "Combinational load shedding using load frequency control and voltage stability indicator." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 5 (2022): 4661–71. https://doi.org/10.11591/ijece.v12i5.pp4661-4671.

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This paper proposes a load shedding program for evaluating and distributing the minimum load power to be curtailed required to bring the frequency and voltage, after the system was subjected to a heavy disturbance, to the allowable range for each load bus. The quantity of load shedding was estimated to restore the power system's frequency, taking into account the turbine governor's primary control and the generators' reserve power for secondary control. Calculation and review of the load bus's voltage stability indicator (Li) to prioritize the load shedding quantity at these lo

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Hang, Zhang, and Wan Jun. "Research on the Development Mode of Slow Traffic System in Cities Based on Low-carbon Concept." Journal on Innovation and Sustainability. RISUS ISSN 2179-3565 2, no. 1 (2011): 33. http://dx.doi.org/10.24212/2179-3565.2011v2i1p33-39.

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The slow traffic system, which has a series of advantages including low cost of traveling, green environment protection and fewer resource-consuming, indicates its important role in the urban traffic system. This paper, through the research on the slow traffic system and based on current slow traffic system construction, puts forward new urban traffic mode including connection of “BRT (bus rapid transit) and PBFR (public bike free rental), integration of NBT (Normal Bus Transit) and TBB (take bicycle on bus), and planning of SCF (special cycle facilities) and SFW (special foot way) and NBT(nor

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Ding, Yuqing, Steven I.-Jy Chien, and Noreen A. Zayas. "Simulating Bus Operations with Enhanced Corridor Simulator: Case Study of New Jersey Transit Bus Route 39." Transportation Research Record: Journal of the Transportation Research Board 1731, no. 1 (2000): 104–11. http://dx.doi.org/10.3141/1731-13.

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The corridor simulator (CORSIM)-based microscopic program, which can simulate realistic bus operations, has been enhanced with some newly developed features; these are validated. Transit operations-related data for New Jersey Transit Bus Route 39 were collected to assess the reliability of the enhanced CORSIM program. On the basis of the mean average percentage error and the root mean square error, this study demonstrated that simulation output can represent realistic bus operations, such as the disruptions of transit headways caused by ridership fluctuations at bus stops and delays at interse

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R.Karthiban, M. Aaruthraa Raajapathi S., Hemalatha B., kouselya M., and Alagappan Padmapriya. "Smart College Bus Management System." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 4 (2020): 1662–66. https://doi.org/10.35940/ijeat.D8658.049420.

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hat supports current challenges and issues that's crucial .Monitoring includes the tracking of one who is moving into the bus, the time of moving into the bus and also the place wherever he's boarded into the bus provided for student bus management system. This whole system consists of frequency Identification (RFID), Fingerprint detector, Wi-Fi and also the Microcontroller. The system consists of 2 main modules In-bus module and Base station module. Once the person is on the brink of get in to the bus, he has got to swipe the RFID card, the RFID tag is scanned by the RFID reader withi

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Suresh, Babu Palepu, and Damodar Reddy Manubolu. "10.11591/ijpeds.v14.i1.pp1-10." International Journal of Power Electronics and Drive Systems 14, no. 1 (2023): 1~10. https://doi.org/10.11591/ijpeds.v14.i1.pp1-10.

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Since the previous few decades, researchers and utilities have been extremely concerned about voltage instability because to the numerous instances of system blackouts caused by voltage instability that have been recorded in various regions of the world. With the development of synchro phasor technology, it appears conceivable to track and manage the system's voltage stability in real time. This study suggests using phasor measuring units (PMUs) placed strategically to monitor voltage stability margin online and to regulate it using a static synchronous compensator (STATCOM). According to

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Sreenu, Ponnada, Kumar Sekharamantry Praveen, Dayal Abhinav, Yarramalle Srinivas, Vadaparthi Nagesh, and Hemanth Jude. "An assisting model for the visually challenged to detect bus door accurately." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 19, no. 6 (2021): 1924–34. https://doi.org/10.12928/telkomnika.v19i6.19811.

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Visually impaired individuals are increasing and as per global statistics, around 39 million are blind, and 246 million are affected by low vision. Even in India, as per the recent reviews, over 5 million visually challenged people are present. Authors performed a survey of some critical problems the visually challenged people faced in India from the centre for visually challenged (CVC) School established by UVSM Hospitals. Among the major problems identified through survey, most of these persons prefer carrying out their tasks independently, and depend on public transport buses for migration.

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Yanala, Srikanth Reddy, Matam Sailaja Kumari, Sydulu Maheswarapu, and M. Mohana Rao. "Evaluation of flexibility assessment indices upon flexible loading of thermal power plants with high penetration of renewables." International Journal of Applied Power Engineering (IJAPE) 12, no. 1 (2023): 109. http://dx.doi.org/10.11591/ijape.v12.i1.pp109-118.

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In this paper, power system flexibility assessment indices evaluation has been carried out with high penetration of renewables in MATLAB environment, inspired from IRENA FlexTool. The parameters such as magnitude of energy mix, resources available, electricity tariffs and price affordability play a vital role in the proposed research. The developed program has been tested against IEEE 9 bus and IEEE 39 bus systems with and without time-series data and with and without high penetration of renewables. By closely matching the results for various test cases and time series evaluations for IEEE 9 a

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Rodríguez-Pérez, Néstor, Javier Matanza Domingo, Lukas Sigrist, Jose Luis Rueda Torres, and Gregorio López López. "Confronting the Threat: Analysis of the Impact of MaDIoT Attacks in Two Power System Models." Energies 16, no. 23 (2023): 7732. http://dx.doi.org/10.3390/en16237732.

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The increasing penetration of Internet of Things (IoT) devices at the consumer level of power systems also increases the surface of attack for the so-called Manipulation of Demand through IoT (MaDIoT) attacks. This paper provides a comparison of the impact that MaDIoT attacks could have on power systems with different characteristics, such as the IEEE 39-Bus (New England) and the PST-16 system (simplified European model), by assuming that the attacker does not have advanced knowledge of the grid. The results for the IEEE 39-Bus system expand and complement the results obtained by previous work

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Álvaro, Ortega, and Milano Federico. "Frequency Participation Factors." IEEE Transactions on Power Systems pp (March 5, 2018): 9. https://doi.org/10.1109/TPWRS.2018.2812423.

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This paper discusses two quantitative and complementary approaches to evaluate the participation of synchronous generators and interconnection buses on local bus frequency variations during electromechanical transients. Both approaches are based on the concept of frequency divider formula recently proposed by the authors on these transactions. A thorough comparison of the two approaches is provided considering several scenarios and three networks, namely the New England 39-bus test system, the all-island 1,479-bus Irish transmission system, and the ENTSO-E 21,177-bus transmission system.

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Noor, Ropidah Bujal, Fazliana Abdul Kadir Aida, Sulaiman Marizan, Manap Sulastri, and Fani Sulaima Mohamad. "Firefly analytical hierarchy algorithm for optimal allocation and sizing of DG in distribution network." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 3 (2022): 1419–29. https://doi.org/10.11591/ijpeds.v13.i3.pp1419-1429.

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Distributed generation (DG) can be beneficially allocated in distribution power systems to improve the power system's efficiency. However, specious DG's allocation and sizing may cause more power loss and voltage profile issues for distribution feeders. Therefore, optimization algorithms are vital for future intelligent power distribution network planning. Hence, this study proposes a multi-objective firefly analytical hierarchy algorithm (FAHA) for determining the optimal allocation and sizing of DG. The multi-objective function formulation is improved further by integrating analytica

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Alhazmi, Yassir A., and Ibrahim A. Altarjami. "Optimal Location for Electric Vehicle Fast Charging Station as a Dynamic Load for Frequency Control Using Particle Swarm Optimization Method." World Electric Vehicle Journal 16, no. 7 (2025): 354. https://doi.org/10.3390/wevj16070354.

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There are significant emissions of greenhouse gases into the atmosphere from the transportation industry. As a result, the idea that electric vehicles (EVs) offer a revolutionary way to reduce greenhouse gas emissions and our reliance on rapidly depleting petroleum supplies has been put forward. EVs are becoming more common in many nations worldwide, and the rapid uptake of this technology is heavily reliant on the growth of charging stations. This is leading to a significant increase in their number on the road. This rise has created an opportunity for EVs to be integrated with the power syst

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Magaji, Nuraddeen, and Bashir Umar. "Application of Power System Stabilizer on Stability Studies." Applied Mechanics and Materials 793 (September 2015): 149–53. http://dx.doi.org/10.4028/www.scientific.net/amm.793.149.

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This paper discusses the effect of placing a power system stabilizer (PSS) at various generators for stability studies in a large power system. The damping control for the New-England 39-bus system was discussed. The effect of PSS in damping the electromechanical modes on different generator was studied. The PSS takes only a generator’s speed as input, and feeds it, after modification, to the voltage reference input of the generator’s excitation system. The results by placing a power system stabilizer on eight generators of the 39-bus system were found to be stable satisfactorily damped

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Mohammedi, Ridha Djamel, Djamal Gozim, Abdelkader Azzeddine Laouid, and Mohamed Elbar. "Optimal placement of phasor measurement units using topology transformation method based on Grey Wolf optimization approach." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 1 (2024): 131–50. http://dx.doi.org/10.54021/seesv5n1-008.

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The optimal placement of phasor measurement units (PMUs) requires minimizing both the number of PMUs required and ensure that the whole power system is totally observable. To identify a power system as observable, it is necessary to know the voltages of all the buses in the power system. This paper suggests rules of selection for the topology transformation method, which implies a process of merging a zero injection bus and one of its neighboring buses. The selection of a bus chosen to merge with a zero injection bus will affect the result of the merging process. To determine the most appropri

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Perwitasari, Perwitasari, Heni Anggorowati, and Yusmardhany Yusuf. "Risk Analysis Related to the Possibility of Using CNG in Trans Jogja Buses." CHEESA: Chemical Engineering Research Articles 5, no. 1 (2022): 28. http://dx.doi.org/10.25273/cheesa.v5i1.10824.28-39.

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<p class="E-JOURNALAbstractBodyEnglish">One of the issues in urban areas such as DI Yogyakarta province is air pollution. The pollution level is high, as shown by the quality index value of about 85.25 in 2019. Vehicle emissions are the most significant source of this pollution in urban areas and can be decreased by using fuel with minimum carbon emission. Compressed Natural Gas (CNG) is an environmentally friendly fuel. However, a safety study is required because CNG is stored under high pressure. Therefore, this research aims to analyze the risk of using CNG in the Trans Jogja bus. The

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Shafeeq, Abdullah Fawzi, and Inaam Ibrahim Ali. "Proper insertion of DSTATCOM in distribution networks based on VSM with network reconfiguration." Indonesian Journal of Electrical Engineering and Computer Science 29, no. 1 (2023): 66–74. https://doi.org/10.11591/ijeecs.v29.i1.pp66-74.

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Voltage stability is necessary to maintain the grid system healthily. The load demand has been steadily increasing that causing high losses and voltage drops, endangering the system's stability. This study proposes the suitable insertion of distribution static compensator (DSTATCOM) based on voltage stability margin (VSM) with optimum network reconfiguration (ONR) to reduce losses and enhance the voltage profile. The findings are acquired utilizing recommended methodologies and test systems such as the IEEE-33 bus and 39 bus of an Iraqi distribution network, which are done using CYME and M

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18

Zhang, Jing, Ting Ting Jiang, and Sheng Wei Mei. "Steady-State Voltage Stability Enhancement by Using Nonlinear Participation Factor." Applied Mechanics and Materials 157-158 (February 2012): 1016–20. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.1016.

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Reactive power plays a key role in the power systems operation and stability. By using theory of normal forms of diffeomorphism, this paper proposes an index of bus voltage nonlinear factor, used to measure the effect of buses to the steady-state voltage stability. In order to verify the effectiveness of the proposed method, case studies are performed using the New England 39-bus power system. At the view of steady-state voltage stability enhancement, the results show that the bus voltage nonlinear factor is an effective index. It can give the correct indication of reactive power compensation

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Lakshminarayana, P., K. Mercy Rosalina, Ch N. Narasimha Rao, Y. Srinivasa Rao, and M. Uma Maheswara Rao. "Optimal PMU Placement based on Voltage Stability Index for Observability of Network." WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS 24 (June 19, 2025): 129–34. https://doi.org/10.37394/23201.2025.24.15.

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This work presents a voltage stability Index (FLVSI) for optimal PMU placement (OPP) to achieve complete network observability. Every PQ bus is considered in the FLVSI strategy to attain weak PQ bus from PMUs are conditioned to allocate at weak PQ buses using ILP approach to attain observability of network. Zero Injection (ZIB) modeling is introduced to minimize PMU places in the network. The redundancy Index (RI) is formulated to compute redundancy for all buses in the network. IEEE –14 -39 and 118- bus networks are programmed in MATLAB and compared with standard techniques to present their e

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Septina, Ayundani, Ketut Arnawa I, Ketut Sumantra I, and Maba Wayan. "Dissemination of Information Desire to use Trans-Metro Dewata Services." International Journal of Multidisciplinary Research and Analysis 06, no. 04 (2023): 1377–89. https://doi.org/10.5281/zenodo.7802061.

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StudyThiscarried out in areas served by the Trans Metro Dewata Bus public transportation, especially Denpasar City, more precisely on corridor 3 which serves the Ubung Terminal route - Sunrise Beach with the route that is passed by the Dalung Integrated Security Post - North Tiara Gatsu - Duku Sari Housing - North Aston - Terminal Ubung – Rs Manuaba – Puri Jero Kuta – Gajah Mada Heritage Area – Surapati – East Sudirman Corner – Bank Indonesia Renon – Samsat Office – Plaza Renon – SDN 2 West Sanur – Kfc Sanur – Sunrise Beach. usa

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Turgeneva, V. V., and V. D. Sekerin. "Cost assessment of the bus fleet technical maintenance." Voprosy regionalnoj ekonomiki 39, no. 2 (2019): 90–95. http://dx.doi.org/10.21499/2078-4023-2019-39-2-90-95.

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To assess the effectiveness of bus fleet technical maintenance, service cost evaluation should be organized. This cost analysis is essential for effective management at automobile operating company. The article describes the bus transport position in Moscow transport economy. The importance of technical maintenance in a bus transport system is defined. Special attention is given to the cost structure investigation.

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Nyoman, Budiartha RakaMandi, and Putu Preantjaya Winaya I. "Transformation of Public Transport Based on Bus Rapid Transit (BRT) and Implementation of Buy the Service (BTS) Scheme in A Metropolitan City of Sarbagita, Bali." International Journal of Current Science Research and Review 05, no. 07 (2022): 2775–84. https://doi.org/10.5281/zenodo.6942630.

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<strong>ABSTRACT: </strong>The level of congestion in Indonesia's big cities, including Denpasar, is already so severe. This is inseparable from the phenomenon where most people in Indonesia now have a car transportation system that is growing rapidly. Furthermore, the city is characterized by high car dependence and a low and steadily declining public transport profile. The Indonesian government seeks to transform the public transportation industry so that drivers want to change to public transportation through the implementation of Bus Rapid Transit (BRT) and most recently, in 2020 the g

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Rohit, Babu, and Bhattacharyya Biplab. "Optimal placement of PMU for complete observability of the interconnected power network considering zero-injection bus: A numerical approach." International Journal of Applied Power Engineering 9, no. 2 (2020): 135~146. https://doi.org/10.5281/zenodo.7349686.

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This paper presents an approach to place the phasor measurement unit (PMU) optimally, which minimizes the setup cost of PMU. This methodology attains complete state estimation of the interconnected power networks. An integer linear programming (ILP) method is explored for the optimal PMU placement problem. It is used to determine the optimal location and minimum number of PMUs necessary to make the interconnected power network completely observable. ILP may provide many solutions if acquainting buses to zero injection buses are unhandled. In the case of more than one solution, a bus observabil

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Zhang, Song, Guoqing Li, Shuguang Li, and Xintong Liu. "A Method of Demarcating Critical Failure Impedance Boundary of Multi-Infeed HVDC Systems Based on Minimum Extinction Angle." Mathematical Problems in Engineering 2021 (August 31, 2021): 1–14. http://dx.doi.org/10.1155/2021/9923737.

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A method of rapidly demarcating the critical commutation failure (CF) region of a multi-infeed high-voltage direct-current (HVDC) system is proposed. Based on the nodal impedance matrix and nodal voltage interaction factor, for different AC fault conditions—both balanced and unbalanced—a method of calculating the extinction angles of converters in multi-infeed HVDC systems is deduced in detail. First, the extinction angles of convertor stations under single-phase, double-phase, and three-phase ground faults and line-to-line faults occurring at any bus in an AC system are calculated. The minimu

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Aakansha, Gupta, Samrit Bharti, and Nazish Khan Prof. "Online Ticket Booking and Automatic Buspass Generation using QR Code." International Journal of Trend in Scientific Research and Development 2, no. 3 (2018): 411–14. https://doi.org/10.31142/ijtsrd10907.

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The aim of this project is to provide online facility of bus pass and tickets system to the daily commuters of Nagpur city. It uses database to store data about passenger, bus, ticket and bus pass. This project has two logins, one for user and another for admin. In this project ticket reservation and bus pass creation as well as renewal system has been provided. It is a web application for people who want to book ticket and get bus pass online. It is very useful as it reduces pressure of manual work. This system was intended to develop a web application to perform functions like accessing data

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Ependi, Usman, and Suyanto Suyanto. "Implementasi Location Based Service Pada Aplikasi Mobile Pencarian Halte BRT Transmusi Palembang." Journal of Information Systems Engineering and Business Intelligence 2, no. 1 (2016): 33. http://dx.doi.org/10.20473/jisebi.2.1.33-39.

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Abstrak— BRT Transmusi Palembang, merupakan sarana angkutan umum masyarakat kota palembang yang sedang berkembang dengan pesat. Sampai saat ini armadanya sudah mencapai 180 unit dan didukung dengan keberadaan halte yang jumlahnya mencapai 290 halte. Untuk menggunakan jasa BRT TransMusi, masyarakat terlebih dahulu harus menuju ke halte terdekat. Banyaknya halte yang tersebar di penjuru kota Palembang, justru menyebabkan kebingungan bagi pengguna untuk menentukan halte mana yang harus dia tuju. Untuk itu, masyarakat perlu panduan agar bisa menemukan dan menuju halte dengan cepat. Penelitian ini

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Yeroyannis, A.-M., A. Stoimeni, K. Tsaknakis, and M. Exindari. "Microbial populations in the city buses of Thessaloniki, Greece." ACTA MICROBIOLOGICA HELLENICA 63, no. 2-3 (2018): 111–17. https://doi.org/10.5281/zenodo.10068804.

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Objectives: Public places including public means of transport are biologically characterized by a variety of microorganisms with great diversity. The aim of this research is to investigate the bacteria which exist in the city buses of a million habitants city, Thessaloniki. Materials - Methods: The samples came from the area of the stop buttons located on the bus handles of selected buses. The sampled buses were from lines Νo 2 and 3, which cross the entire city, from east to west. The samples were collected at the end of each route at peak hours (10 am to 2 pm) and cultured on McConkey a

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Chetna Sagar. "Damping Local Modes in Power Systems Using Frequency-Responsive Load Control." Journal of Information Systems Engineering and Management 10, no. 51s (2025): 509–30. https://doi.org/10.52783/jisem.v10i51s.10423.

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This paper explores the role of load modeling in small-signal stability analysis, focusing on the use of frequency-dependent static load (FDL) models. The study investigates the influence of FDLs on oscillation damping and the design of a locally measured power system stabilizer (PSS). A specific system configuration is considered, where the FDL is connected to the secondary bus of a step-up transformer. Both frequency domain and time domain analyses are conducted to assess the impact on system dynamics, with results demonstrated through eigenvalue evaluations and system responses to contingen

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Suraju, Abiodun Aminu PhD*, Adeolu Shodiya Olumuyiwa, and Olaniyi Adeoti Ibrahim. "SERVICE QUALITY OF BUS RAPID TRANSIT (BRT) ALONG THE IKORODU CORRIDORS, LAGOS STATE, NIGERIA." Ilorin Journal of Business and Social Sciences (IJBSS) Volume 24, no. 2 (2022): 91–108. https://doi.org/10.5281/zenodo.7827506.

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Public transportation (PT) is important in urban areas for the movement of people and helps create a sustainable transport system in most cities. In 2008, the Lagos State Government, in collaboration with the World Bank, established a bus rapid transit (BRT) system of PT to address the lingering problem of chaotic, uncoordinated, and unreliable public transportation in the Lagos metropolis. The BRT system seems to offer higher service quality than the traditional buses in the metropolis. It attracts a mammoth crowd of commuters, including car owners, along its corridors. However, there are con

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Eng., Tareq Ibrahim Al-Shawaheen, Mohammed Al-eghweryeen Eng., Mohamed Fowzi Ababeneh Eng., and Shadi Odeh El-najdawi Eng. "IMPROVING I/O BANDWIDTH TECHNOLOGIES PCI, PCI-EXPRESS, AND INFINIBAND TECHNOLOGIES." International Journal of Research - Granthaalayah 6, no. 3 (2018): 1–7. https://doi.org/10.5281/zenodo.1210837.

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Data transfers are handled by the computer bus which connects the device to the memory. The data bus is analogous to the transmission in a car which is often overshadowed by the horsepower of the engine. The three technologies PCI, PCI-Express and InfiniBand Technology all share the same general goal of improving I\O bandwidth, but each technology attacks a different problem. In this survey we'll show how these technologies interact and complement each other. First, we provide the definitions for each one of them, and then we provide a brief description for their architectures. Beside that

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Zhou, Xin, Haishun Sun, Cong Zhang, and Qiangsheng Dai. "Optimal Placement of PMUs Using Adaptive Genetic Algorithm Considering Measurement Redundancy." International Journal of Reliability, Quality and Safety Engineering 23, no. 03 (2016): 1640001. http://dx.doi.org/10.1142/s0218539316400015.

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With the extensive use of PMUs in power system, how to implement the optimal PMU placement for complete system observability is becoming more and more significant. Against simple genetic algorithm, easy to fall into local minima, this paper proposed a simple and effective adaptive genetic algorithm, aimed at determining the optimal placement of PMUs. The proposed algorithm provides adaptive crossover and mutation probability in iterations and has better convergence and global search ability than simple genetic algorithm, confirmed in many practical applications. Generally speaking, minimum PMU

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Ahmed, Muhammad Musadiq, Muhammad Amjad, Muhammad Ali Qureshi, Muhammad Omer Khan, and Zunaib Maqsood Haider. "Optimal PMU Placement to Enhance Observability in Transmission Networks Using ILP and Degree of Centrality." Energies 17, no. 9 (2024): 2140. http://dx.doi.org/10.3390/en17092140.

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The optimal PMU placement problem is placing the minimum number of PMUs in the network to ensure complete network observability. It is an NP-complete optimization problem. PMU placement based on cost and critical nodes is solved separately in the literature. This paper proposes a novel approach, a degree of centrality in the objective function, to combine the effect of both strategies to place PMUs in the power network optimally. The contingency analysis and the effect of zero-injection buses are solved to ensure the reliability of network monitoring and attain a minimum number of PMUs. Intege

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Palepu, Suresh Babu, and Manubolu Damodar Reddy. "Voltage stability assessment using PMUs and STATCOM." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 1 (2023): 1. http://dx.doi.org/10.11591/ijpeds.v14.i1.pp1-10.

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<p class="Abstract">Since the previous few decades, researchers and utilities have been extremely concerned about voltage instability because to the numerous instances of system blackouts caused by voltage instability that have been recorded in various regions of the world. With the development of synchro phasor technology, it appears conceivable to track and manage the system's voltage stability in real time. This study suggests using phasor measuring units (PMUs) placed strategically to monitor voltage stability margin online and to regulate it using a static synchronous compensator (S

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Sahu, Pankaj, and M. K. Verma. "ONLINE MONITORING OF VOLTAGE STABILITY MARGIN AND ITS CONTROL THROUGH STATCOM." COMPUSOFT: An International Journal of Advanced Computer Technology 08, no. 08 (2019): 3324–35. https://doi.org/10.5281/zenodo.14833112.

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Voltage instability has been of serious concern for researchers and utilities since last few decades as several incidences of system blackout initiated by voltage instability have been observed in different parts of the world. With advent of synchrophasor technology, it seems possible to monitor and control voltage stability of the system in real time framework. This paper proposes online monitoring of voltage stability margin based on optimally placed phasor measurement units (PMUs), and its control through Static Synchronous Compensator (STATCOM). STATCOM has been placed at the critical bus

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Babu, Rohit, and Biplab Bhattacharyya. "Optimal placement of PMU for complete observability of the interconnected power network considering zero-injection bus: A numerical approach." International Journal of Applied Power Engineering (IJAPE) 9, no. 2 (2020): 135. http://dx.doi.org/10.11591/ijape.v9.i2.pp135-146.

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<div data-canvas-width="397.3623059866966">This paper presents an approach to place the phasor measurement unit (PMU)</div><div data-canvas-width="397.3623059866962">optimally, which minimizes the setup cost of PMU. This methodology attains complete state estimation of the interconnected power networks. An integer linear programming (ILP) method is explored for the optimal PMU placement problem. It is used to determine the optimal location and minimum number of PMUs necessary to make the interconnected power network completely observable. ILP may provide many solutions if acq

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Satya Dini, Hasna, and Rizki Pratama Putra. "Pengaturan Parameter Power System Stabilizer pada Pembangkit di Sistem IEEE 39 Bus." Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik 22, no. 1 (2023): 36–43. http://dx.doi.org/10.55893/jt.vol22no1.525.

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Semakin kompleksnya sebuah sistem kelistrikan menyebabkan permasalahan yang muncul menjadi semakin kompleks. Salah satu isu yang penting untuk dilakukan kajian adalah terkait kestabilan sistem, khususnya kestabilan sinyal kecil. Power System Stabilizer merupakan komponen dari sistem eksitasi pembangkit yang dapat memberikan solusi dari permasalahan kestabilan sinyal kecil jika dilakukan pengaturan yang tepat. Penelitian ini bertujuan untuk melakukan observasi parameter Power System Stabilizer untuk meningkatkan kestabilan sinyal kecil pada sistem IEEE 39 Bus. Power System Stabilizer dapat meni

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Rehman, Atta Ur, Ajmal Farooq, Imtiaz Ahmad, et al. "Steady state Contingency Analysis of IEEE-39 Bus system Using PSS/E." International Journal of Advanced Natural Sciences and Engineering Researches 7, no. 7 (2023): 78–85. http://dx.doi.org/10.59287/ijanser.1339.

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Nowadays the stable, secure and reliable power system operation is the main objective of anyelectric power utility. The Power system is vulnerable to any contingency i.e. loss of Transmission line,Transformer, Generating unit etc. The power system control engineer should have detail analysis of at leastthe most probable and sever contingencies of the system and accordingly devise the remedial action plan.Thus, Power system contingency analysis and evaluation play vital role in ensuring power system stabilityand reliability. Keeping in view the importance of contingency analysis in power system

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Babu, Rohit, and Biplab Bhattacharyya. "A-star algorithm based on admissible searching for strategically placing PMU considering redundancy and cost/benefit analysis." International Journal of Applied Power Engineering (IJAPE) 11, no. 2 (2022): 165. http://dx.doi.org/10.11591/ijape.v11.i2.pp165-178.

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This research examines an admissible search algorithm-dependent A-star strategy and takes into account redundancy and cost/benefit analysis under normal operating conditions. The goal is to allocate a phasor measurement unit (PMU) for maximal observability of the interconnected power network. To determine the fewest number of PMU required to make the connected power network totally observable using redundancy analysis, the A-star approach is utilized. The redundancy analysis of the power network is carried out in order to determine the appropriate PMU placement, which results in the acquisitio

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Rohit, Babu, and Bhattacharyya Biplab. "A-star algorithm based on admissible searching for strategically placing PMU considering redundancy and cost/benefit analysis." International Journal of Applied Power Engineering 11, no. 2 (2022): 165~178. https://doi.org/10.11591/ijape.v11.i2.pp165-178.

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This research examines an admissible search algorithm-dependent A-star strategy and takes into account redundancy and cost/benefit analysis under normal operating conditions. The goal is to allocate a phasor measurement unit (PMU) for maximal observability of the interconnected power network. To determine the fewest number of PMU required to make the connected power network totally observable using redundancy analysis, the A-star approach is utilized. The redundancy analysis of the power network is carried out in order to determine the appropriate PMU placement, which results in the acquisitio

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Zhong, Weidong, Chun Li, Minghua Chu, et al. "Bayesian Inertia Estimation via Parallel MCMC Hammer in Power Systems." Energies 18, no. 15 (2025): 3905. https://doi.org/10.3390/en18153905.

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The stability of modern power systems has become critically dependent on precise inertia estimation of synchronous generators, particularly as renewable energy integration fundamentally transforms grid dynamics. Increasing penetration of converter-interfaced renewable resources reduces system inertia, heightening the grid’s susceptibility to transient disturbances and creating significant technical challenges in maintaining operational reliability. This paper addresses these challenges through a novel Bayesian inference framework that synergistically integrates PMU data with an advanced MCMC s

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Phanendra Babu, N. V., P. Suresh Babu, and D. V. S. S. Siva Sarma. "A New Power System Restoration Technique based on WAMS Partitioning." Engineering, Technology & Applied Science Research 7, no. 4 (2017): 1811–19. http://dx.doi.org/10.48084/etasr.1197.

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An important feature of a Wide-Area Measurement System (WAMS) is the ability to recover data during a communication failure. This paper presents a novel scheme of partitioning a PMU installed power network into a number of WAMS regions in order to make the power system restoration process simpler. This algorithm also proposes the optimal placement of Phasor Data Concentrators (PDCs) in each region to record the data from PMUs. This paper considers the restoration constraints like transformer equivalent bus, generation-load balance and the observability of region for the partitioning of power s

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Phanendra, Babu N. V., Babu P. Suresh, and Sarma D. V. S. S. Siva. "A New Power System Restoration Technique based on WAMS Partitioning." Engineering, Technology & Applied Science Research 7, no. 4 (2017): 1811–19. https://doi.org/10.5281/zenodo.844307.

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An important feature of a Wide-Area Measurement System (WAMS) is the ability to recover data during a communication failure. This paper presents a novel scheme of partitioning a PMU installed power network into a number of WAMS regions in order to make the power system restoration process simpler. This algorithm also proposes the optimal placement of Phasor Data Concentrators (PDCs) in each region to record the data from PMUs. This paper considers the restoration constraints like transformer equivalent bus, generation-load balance and the observability of region for the partitioning of power s

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Tomin, Nikita, Daniil Panasetsky, and Alexey Iskakov. "Stability of Power Grids: State-of-the-art and Future Trends." EPJ Web of Conferences 217 (2019): 01017. http://dx.doi.org/10.1051/epjconf/201921701017.

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The state of the art of transient stability and steady-state (small signal) stability in power grids are reviewed. Transient stability concepts are illustrated with simple examples; in particular, we consider two machine learning-based methods for computing region of attraction: ROA produced by Neural Network Lyapunov Function; estimation of the ROA of IEEE 39-bus system using Gaussian process and Converse Lyapunov function. We discuss steady state stability in power systems, and using Prony’s modal analysis for evaluating small signal stability for the 7 Bus Test system and real French power

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de Albuquerque, Felipe Proença, Rafael Nascimento, Carlos A. Prete, and Eduardo Coelho Marques da Costa. "Phasor Measurement Unit-Driven Estimation of Transmission Line Parameters Using Variable Noise Model." Energies 17, no. 14 (2024): 3587. http://dx.doi.org/10.3390/en17143587.

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Accurate parameters are crucial in modern energy systems to ensure the reliable operation of all components. Given the substantial volume of data in monitored systems, high-performance methods are necessary. This paper proposes a new Bayesian multi-output regressor for estimating the parameters of a three-phase transmission line. The presented approach achieves acceptable accuracy in parameter estimation using only one end of the line. The Bayesian regressor is developed using information derived from the data themselves, eliminating the need to explicitly model the system. This capability all

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Anuradha, Rajiv Joshi, M. Vaidya S, and Pimpale Neha. "STUDY OF VENTILATORY LUNG FUNCTION TESTS OF BUS DRIVERS IN PUNE CITY." International Journal Of Basic And Applied Physiology 6, no. 1 (2017): 97–102. https://doi.org/10.5281/zenodo.4500433.

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<strong>Background &Objectives: </strong>Bus drivers are highly exposed to diesel exhaust and other atmospheric pollutants. Thus the study was planned to study ventilatory lung function tests of bus drivers in Pune city. <strong>Methods</strong>: Age and height matched control group subjects (n=31) lung function tests were recorded by computerized spirometer and were compared with bus drivers working for 5-10 years (study group I, n=31) and working for 10-20 years (study group II, n=31) Data was analyzed by student's unpaired‘t’ test. Results &Interpretation: Study grou

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Zayu, Wiwin Putri. "Analisa Kebutuhan Pelayanan Trans Padang Koridor Pusat Kota – Pusat Pemerintah." Jurnal Ilmiah Rekayasa Sipil 14, no. 1 (2017): 53–60. http://dx.doi.org/10.30630/jirs.14.1.117.

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Increasing the need of mass transportation in Padang city is needed to overcoming the chaos of transportation. For that to be done the analyst service needs for Trans Padang corridor Center of City-center government.a From result of research known that corridor Trans Padang for developmentof trajectory Trans Padang corridor Center of City-Center Government are Imam Bonjol street – Karya - Gereja – Diponegoro – Hangtuah – Samudera – S. Parman – Khatib Sulaiman – Jhon Anwar – Gadjah Mada – Siteba – Simp. Balai Baru – Sungai Sapih – Aie Pacah for direction go and go home rute Aie Pacah – Sungai S

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Nivedha, R. Raja, Jai Govind Singh, and Weerakorn Ongsakul. "A novel inertia emulator to reduce the rate of change of frequency for power systems with solar PV and battery energy storage." Clean Energy 7, no. 4 (2023): 873–84. http://dx.doi.org/10.1093/ce/zkad035.

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Abstract Energy access, climate change and public health issues are some major drivers for the need for renewable sources. However, most renewable sources, excluding large hydro, have zero or negligible rotational inertia, which is critical to stabilizing the power system after contingency. Therefore, this paper proposes a droop-based inertia emulator to reduce the rate of change of frequency and frequency deviations. The robustness of the controller is analysed by applying various uncertainties and disturbances of power system components that were carried out using DIgSILENT PowerFactory simu

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Prokurovskiy, A. A., I. A. Andreev, and N. V. Tutova. "Improving the efficiency of resource allocation in educational content delivery networks using the 1C:ESB integration bus." Informatics and education 39, no. 4 (2024): 90–95. http://dx.doi.org/10.32517/0234-0453-2024-39-4-90-95.

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Learning Management Systems (LMS) play a key role in the educational process by providing students with various educational content and instructors with tools to monitor student knowledge and assess progress. However, as the number of students increases, the load on data transmission channels increases, which can lead to a decrease in the quality of learning. To solve this problem, Content Delivery Networks (CDN) are used to speed up the loading of websites and reduce the load on servers. CDN ensure the availability and security of websites and improve their scalability (resistance to smooth l

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Sahu, Pankaj, and M. K. Verma. "Online monitoring of voltage stability margin using PMU measurements." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 2 (2020): 1156. http://dx.doi.org/10.11591/ijece.v10i2.pp1156-1168.

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With the growing smart grid concept it becomes important to monitor health of the power system at regular intervals for its secure and reliable operation. Phasor Measurement Units (PMUs) may play a vital role in this regard. This paper presents voltage stability monitoring in real time framework using synchrophasor measurements obtained by PMUs. Proposed approach estimates real power loading margin as well as reactive power loading margin of most critical bus using PMU data. As system operating conditions keep on changing, loading margin as well as critical bus information is updated at regula

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Zuraida, Rida. "Evaluation of Fatigue Risk, Subjective Fatigue, and Work Motivation Level of Intercity Bus Driver." Jurnal Tekno 19, no. 2 (2022): 82–89. http://dx.doi.org/10.33557/jtekno.v19i2.2040.

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In Indonesia, the bus is one of the affordable transportation for intercity/province routes. However, there are accident risks faced by bus drivers related to fatigue caused by inadequate rest and sleep. The objective of this study is to assess the bus driver fatigue risks level, accompanied by work motivation and subjective fatigue. Using the convenience sampling method, 300 intercity bus drivers from 12 bus companies (male, age between 25-68 years old (44.06 ± 9.83)) agree to involve in the study. Fatigue risk level was estimated by fatigue likelihood score (FLS) which indicated by driving t

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