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Journal articles on the topic 'Transient Stabilitet'

Author: Grafiati

Published: 23 June 2021

Last updated: 29 July 2025

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1

Misbachudin, Rozy Muchlis. "MINIMALISASI PELEPASAN BEBAN PADA PT. FMC AGRICULTURAL MANUFACTURING YANG DISEBABKAN GANGGUAN HUBUNG SINGKAT UNTUK MEMPERBAIKI STABILITAS TRANSIEN MENGGUNAKAN METODE SENSITIVITAS BUS." MEDIA ELEKTRIKA 13, no. 2 (2020): 54. http://dx.doi.org/10.26714/me.13.2.2020.54-66.

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Pada penelitian ini membahas tentang meminimalkan pelepasan beban untuk memperbaiki stabilitas transien pada PT. FMC Agricultural Manufacturing yang disebakan gangguan hubung singkat serta lepas sinkron nya generator. Pada pengujian dilakukan dengan menggunakan software electric transient analysis program (ETAP). Dengan memodelkan single line dengan menambahkan generator mode swing, serta menerapkan metode sensitivitas bus, pada masing masing bus pada sistem, untuk mendapatkan hasil stabilitas transien optimal saat terjadi gangguan, agar generator dapat kembali ke sinkron dan kondisi bus tidak

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Misbachudin, Rozy Muchlis. "MINIMALISASI PELEPASAN BEBAN PADA PT. FMC AGRICULTURAL MANUFACTURING YANG DISEBABKAN GANGGUAN HUBUNG SINGKAT UNTUK MEMPERBAIKI STABILITAS TRANSIEN MENGGUNAKAN METODE SENSITIVITAS BUS." MEDIA ELEKTRIKA 13, no. 2 (2020): 54. http://dx.doi.org/10.26714/me.v13i2.6775.

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Pada penelitian ini membahas tentang meminimalkan pelepasan beban untuk memperbaiki stabilitas transien pada PT. FMC Agricultural Manufacturing yang disebakan gangguan hubung singkat serta lepas sinkron nya generator. Pada pengujian dilakukan dengan menggunakan software electric transient analysis program (ETAP). Dengan memodelkan single line dengan menambahkan generator mode swing, serta menerapkan metode sensitivitas bus, pada masing masing bus pada sistem, untuk mendapatkan hasil stabilitas transien optimal saat terjadi gangguan, agar generator dapat kembali ke sinkron dan kondisi bus tidak

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3

Isaev, Yu N., V. A. Kolchanova, and S. S. Tarasenko. "Mathematical Model of Synchronous Generator without Damper Windings which is Equipped with an Automatic Stabiliser." Applied Mechanics and Materials 792 (September 2015): 56–61. http://dx.doi.org/10.4028/www.scientific.net/amm.792.56.

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The models of the synchronous generator for calculating the steady-state and transient regimes including the transients of stator windings of generator without damper windings have been presented. The ability to use different mathematical approximations of the generator models depending on the spatial distance of the disturbance point has been shown. The examples of the generator models without damper windings which is equipped with an automatic stabilizer have been given. To determine the currents and voltages as functions of time the state-space technique and Park – Gorev transformation have

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Pradipta, Adya, Mochammad Facta, and Sudjadi Sudjadi. "PERANCANGAN KONVERTER ARUS SEARAH TIPE BUCK CONVERTER DENGAN UMPAN BALIK (FEEDBACK) MENGGUNAKAN IC TL494 SEBAGAI STABILITAS TEGANGAN PENGISIAN BATERAI." TRANSIENT 7, no. 4 (2019): 933. http://dx.doi.org/10.14710/transient.7.4.933-940.

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Sumber listrik DC mulai banyak dikembangkan di berbagai sektor terutama di bidang kelistrikan dan otomotif. Hal ini dampak dari inovasi perkembangan teknologi yang sangat pesat khususnya pada perangkat dengan basis sumber listrik DC. Baterai dan perangkat elektronik adalah perangkat berbasis listrik DC yang banyak dikembangkan dan membutuhkan suplai tegangan yang stabil. Jika tegangan tidak stabil maka membuat perangkat menjadi panas, masa penggunaan (lifetime) berkurang bahkan bisa rusak. Untuk itu peran regulator stabilitas tegangan sangat penting pada perangkat berbasis listrik DC. Permasal

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Patel, Lalit K., Kaushik M. Sangada, Sunil S. Changlani, and Ankit M. Patel. "Coordination Of Pss And Statcom To Enhance The Power System Transient Stability." Indian Journal of Applied Research 1, no. 9 (2011): 62–64. http://dx.doi.org/10.15373/2249555x/jun2012/24.

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6

Calderón-Guizar, Jorge Guillermo. "Estudios de estabilidad transitoria en sistemas eléctricos industriales con generación propia interconectados con el sistema de transmisión." Ingeniería, investigación y tecnología 11, no. 4 (2010): 445–51. http://dx.doi.org/10.22201/fi.25940732e.2010.11n4.038.

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7

Hardani, Dian Nova Kusuma, Abi Aditya Triyanda, and Winarso Winarso. "Monitoring Stabilitas Transien Pada Sistem Tenaga Listrik." JRST (Jurnal Riset Sains dan Teknologi) 3, no. 2 (2019): 69. http://dx.doi.org/10.30595/jrst.v3i2.4686.

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Kebutuhan listrik pada saat ini merupakan kebutuhan primer bagi masyarakat Indonesia, sehingga kualitas energi listrik yang baik harus dipenuhi. Perubahan beban yang bervariatif dapat berdampak pada kestabilan sistem. Jika terjadi peristiwa beban berlebih atau gangguan maka harus dilakukan pelepasan beban agar system tetap stabil. Peristiwa alih hubung pada rangkaian listrik dapat menyebabkan adanya sentakan tegangan dan arus yang disebut dengan arus transien. Pada penelitian ini, analisis perhitungan dan simulasi lepasnya pembebanan di Gardu Induk menggunakan perangkat lunak ETAP. Hal ini ber

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8

Salkuti, Surender Reddy. "Transient stability enhancement using thyristor controlled series compensator." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 2 (2019): 884–93. https://doi.org/10.11591/ijece.v9i2.pp884-893.

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Stability is an important issue which determines the stable operation of power system. At present, the most practical available method of transient stability analysis is time domain simulation, in which the non-linear differential equations are solved by step by step method or network reduction techniques. In this paper, FACTS devices are used in the existing system for effective utilization of existing transmission resources. In this paper, the studies have been carried out in order to improve the transient stability of 5 bus system, and Western System Coordinating Council (WSCC) 9 bus system

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Esmaili, Masoud, Heidar Ali Shayanfar, and Nima Amjady. "Multi-objective congestion management incorporating voltage and transient stabilities." Energy 34, no. 9 (2009): 1401–12. http://dx.doi.org/10.1016/j.energy.2009.06.041.

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10

Bijang, Nathaniel L. "ANALISA WAKTU PEMUTUSAN KRITIS SUATU SISTEM KELISTRIKAN." JURNAL ILMIAH SAINS 12, no. 2 (2013): 153. http://dx.doi.org/10.35799/jis.12.2.2012.741.

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ANALISA WAKTU PEMUTUSAN KRITIS SUATU SISTEM KELISTRIKAN ABSTRAK Kestabilan adalah kemampuan mesin sinkron dari sistem tenaga listrik untuk mencapai kondisi stabil pada kondisi operasi baru yang sama atau identik dengan kondisi sebelum terjadi gangguan. Umumnya analisa kestabilan terbagi dalam dua kategori yaitu kestabilan steady state yaitu analisa sistem untuk kembali ke kondisi stabil setelah mengalami gangguan kecil dan kestabilan transient yaitu analisa sistem untuk kembali ke kondisi normal/stabil setelah mengalami gangguan besar. Studi/analisa stabilitas sangat diperlukan saat perencanaa

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Suzuki, Kenichi, Fumiyuki Sanematsu, Takahiro Fujiwara, Michael Edidin, and Akihiro Kusumi. "S3B5 Stimulation-induced formation of transient but stabilized rafts.(Single Molecure Dynamics and Reactions)." Seibutsu Butsuri 42, supplement2 (2002): S14. http://dx.doi.org/10.2142/biophys.42.s14_4.

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12

Jauch, Clemens, and Tom Cronin. "Simulation Model of a Wind Turbine Pitch Controller for Grid Frequency Stabilisation." Wind Engineering 29, no. 4 (2005): 377–87. http://dx.doi.org/10.1260/030952405774857879.

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This paper describes a pitch angle controller that enables an active-stall wind turbine to dampen actively grid frequency oscillations. This builds on previous work in the area of the transient stability control of active-stall turbines. The phenomenon of grid frequency oscillations is explained briefly and then the task for the wind turbine controller defined. The pitch controller that acts as a grid frequency stabiliser is explained in terms of its layout, control sequence and parameters. Finally, a transient fault situation with subsequent grid frequency oscillations is simulated and it is

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13

Rathi, N. V., and H. S. Dalvi. "Design of Fuzzy Controller for Improvement of Transient Stability of Hybrid Energy Generation System." International Journal of Engineering and Technology 4, no. 5 (2012): 626–28. http://dx.doi.org/10.7763/ijet.2012.v4.447.

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14

Brehm, Philipp C., Anne S. Müller-Feyen, Gregor Schnakenburg, and Rainer Streubel. "1,3,2-Diheterophospholane complexes: access to new tuneable precursors of phosphanoxyl complexes and P-functional polymers." Dalton Transactions 51, no. 11 (2022): 4400–4405. http://dx.doi.org/10.1039/d2dt00027j.

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P-OTEMP 1,3,2-heterophospholane tungsten complexes with different thermal stabilities were used to generate transient phosphanoxyl complexes which allow for a first-time radical polymerisation of acrylonitrile based on this methodology.

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15

Rosyadi, Marwan, Atsushi Umemura, Rion Takahashi, et al. "A simplified model design of MMC-HVDC transmission system for steady state and transient stability analyses." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 2 (2023): 934. http://dx.doi.org/10.11591/ijpeds.v14.i2.pp934-947.

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A simplified model of a modular multilevel converter (MMC) implemented on a high voltage direct current (HVDC) transmission system is presented in this study for the analyses of steady-state and transient stabilities. The simplified model design’s goal is to reduce the complicated modeling of the MMC circuit as well as the simulation time of the analysis. The validity of the model design has been examined using the PSCAD/EMTDC simulation program, where the simulation outcomes of the detailed model and the simplified model are contrasted. It has been established that the simplified model is acc

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Marwan, Rosyadi, Umemura Atsushi, Takahashi Rion, et al. "A simplified model design of MMC-HVDC transmission system for steady state and transient stability analyses." International Journal of Power Electronics and Drive System 14, no. 02 (2023): 934~947. https://doi.org/10.11591/ijpeds.v14.i2.pp934-947.

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A simplified model of a modular multilevel converter (MMC) implemented on a high voltage direct current (HVDC) transmission system is presented in this study for the analyses of steady-state and transient stabilities. The simplified model design’s goal is to reduce the complicated modeling of the MMC circuit as well as the simulation time of the analysis. The validity of the model design has been examined using the PSCAD/EMTDC simulation program, where the simulation outcomes of the detailed model and the simplified model are contrasted. It has been established that the simplified model

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17

Marreddy, Uma Vani, Ramana Rao P.V., and Rao P. V. Kumar S.V. "Fuzzy Logic Controller for Enhancement of Transient Stability in Multi Machine AC-DC Power Systems." International Journal of Engineering and Technology 2, no. 5 (2010): 423–29. http://dx.doi.org/10.7763/ijet.2010.v2.159.

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18

Febiola, Shinta, Yulisman Yulisman, and Herris Yamashika. "ANALISA STABILITAS TRANSIEN PADA JARINGAN DISTRIBUSI RADIAL IEEE 33 BUS TERHUBUNG DENGAN PLTMH PADA KONDISI OPERASI TERPISAH (ISLANDING OPERATION)." Ensiklopedia Research and Community Service Review 1, no. 3 (2022): 169–75. http://dx.doi.org/10.33559/err.v1i3.1252.

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Kebutuhan akan energi listrik terus meningkat seiring dengan perkembangan teknologi dan pertambahan penduduk dan perkembangan beban yang terus meningkat. Salah satu cara untuk menjaga ketersediaan energi listrik yang mampu mengakomodasi perkembangan beban tanpa menambah kapasitas pembangkit utama adalah dengan menempatkan Distributed Generation (DG). Metode yang digunakan pada penelitian ini dengan menggunakan pembangkit tersebar PLTMH dalam menganalisa stabilitas transien pada jaringan distribusi radial IEEE 33 bus. Hasil yang paling baik dari beberapa simulasi yaitu pada penambahan 2 pembang

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19

Jagannath, Kannale, K. Rajeshwar Sangappa, R. Basavaraj, and G. Shweta. "Exploring SVC and STATCOM: Unveiling the Secrets behind Power System Reliability." Recent Trends in Control and Converter 6, no. 3 (2023): 1–8. https://doi.org/10.5281/zenodo.8365438.

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<em>Modern power systems' transmission networks are under increasing strain as a result of rising demand and limits on the construction of additional lines. The risk of losing stability after a disruption is one result of such a strained system. In order to better utilize a transmission network's current facilities while maintaining the appropriate stability margin, flexible ac transmission system (FACTS) devices are shown to be equally effective. In order to control voltage and power flow in electric power transmission systems, Flexible AC Transmission System (FACTS) controllers, like

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20

Nofvowan, Anang Dasa, Mochammad Mieftah, and Wijaya Kusuma. "Analisis Stabilitas Transien Tegangan dan Frekuensi pada Sistem Pembangkit Listrik Tenaga Uap." ELPOSYS: Jurnal Sistem Kelistrikan 8, no. 1 (2021): 28–33. http://dx.doi.org/10.33795/elposys.v8i1.31.

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Electrical energy generated also comes from several energy, namely water, steam, nuclear, etc. In Indonesia the type of steam power plant is a type of power plant that is widely used, where one of the crucial problems that are often encountered in this generation system, namely the problem of stability. The stability of the electric power system is the ability of the system to return to normal or steady operation after a large load load switching or interference. Disruption or load switching that exist in the system must be muted and aligned in a certain time to be said to be stable. Causes of

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SUTEJA, RAI PRAMESTI, HADI SUYONO, and RINI NUR HASANAH. "Analisis Stabilitas Transien pada Onshore Windfarm Terhubung VSC-HVDC Sistem Jawa Bali." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 10, no. 4 (2022): 873. http://dx.doi.org/10.26760/elkomika.v10i4.873.

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ABSTRAKGangguan hubung singkat 3 fasa di Pulau Bali dapat menyebabkan ketidakstabilan pada sistem tenaga listrik. Sistem kelistrikan Pulau Bali bergantung pada pasokan dari Pulau Jawa dengan penghantar kabel bawah laut. Untuk memenuhi kebutuhan energi listrik di masa depan, diperlukan pengembangan sumber energi terbarukan. Penelitian ini membahas tentang kestabilitan sistem pada onshore wind farm terhubung VSC-HVDC sistem kelistrikan Jawa-Bali dengan melibatkan pengaruh gangguan hubung singkat 3 fasa. Analisis kestabilan sistem menggunakan DIgSILENT dengan metode time domain simulation. Respon

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Rezazadeh, A., M. Sedighizadeh, and A. Alavian. "Optimal Sizing and Sitting of Distributed Generation for Power System Transient Stability Enhancement Using Genetic Algorithm." International Journal of Engineering and Technology 1, no. 5 (2009): 387–90. http://dx.doi.org/10.7763/ijet.2009.v1.73.

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Zhang, Tong, Zhiyong Si, and Yinnian He. "A stabilised characteristic finite element method for transient Navier–Stokes equations." International Journal of Computational Fluid Dynamics 24, no. 9 (2010): 369–81. http://dx.doi.org/10.1080/10618562.2010.535791.

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Doane Puri Mustika, Sasongko Pramono Hadi, Mokhammad Isnaeni B, Mohd. Brado Frasetyo, and Tumiran. "Peningkatan Stabilitas Transien pada Turbin Angin Berbasis DFIG Menggunakan SFCL tipe Bridge." Jurnal Nasional Teknik Elektro dan Teknologi Informasi 11, no. 4 (2022): 297–304. http://dx.doi.org/10.22146/jnteti.v11i4.5031.

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Produksi energi listrik saat ini banyak dilakukan dengan pembakaran fosil secara besar yang mengakibatkan efek negatif untuk bumi, yaitu global warming. Langkah yang dapat dilakukan dalam sektor listrik untuk meminimalkan emisi adalah dengan melakukan pergantian pembangkit konvensional ke terbarukan. Energi angin menjadi salah satu jenis energi baru terbarukan (EBT) yang berpotensi untuk meminimalkan emisi. Pembangkit energi angin yang banyak digunakan saat ini adalah pembangkit energi angin berkecepatan variabel, seperti doubly fed induction generator (DFIG). DFIG memiliki banyak keunggulan,

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Chen, Hung-Cheng, Long-Yi Chang, and Li-Qun Shang. "Transient Stability Improvement for Combined Heat and Power System Using Load Shedding." Mathematical Problems in Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/131062.

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The purpose of the paper is to analyze and improve the transient stability of an industrial combined heat and power (CHP) system in a high-tech science park in Taiwan. The CHP system installed two 161 kV/161 kV high-impendence transformers to connect with Taipower System (TPS) for both decreasing the short-circuit fault current and increasing the fault critical clearing time. The transient stabilities of three types of operation modes in CHP units, 3G1S, 2G1S, and 1G1S, are analyzed. Under the 3G1S operation mode, the system frequency is immediately restored to 60 Hz after tie line tripping wi

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Chen, Xingyou, Wenjia Si, Qun Yu, and Jingyang Fang. "Transient Stability Analysis and Enhancement of Grid-Forming Converters: A Comprehensive Review." Electronics 14, no. 4 (2025): 645. https://doi.org/10.3390/electronics14040645.

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Grid-forming converters (GFMCs) have emerged as enablers in modern power systems. However, they face the transient stability problem, which hinders them from successful fault ride-through (FRT) and potentially results in the system’s collapse. These problems have drawn increasing attention, leading to a rise in related research. To capture the advancements in the field, this paper reviews studies on the transient stability analysis and enhancement of GFMCs. In particular, the transient stabilities of GFMCs with first- and second-order power control modes are reviewed, and a comprehensive compa

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Dulhadi, Dulhadi, and Dewi Indriati Hadi Putri. "KAJIAN STABILITAS SISTEM KELISTRIKAN INDUSTRI." KURVATEK 5, no. 2 (2020): 19–30. http://dx.doi.org/10.33579/krvtk.v5i2.1814.

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Penelitian membahas perilaku dinamis pengoperasian beberapa generator sinkron pada sistem kelistrikan industri dan untuk menyelidiki berbagai faktor yang mempengaruhi kestabilan sistem tenaga listrik. Penelitian ini bertujuan untuk mengembangkan suatu metode analisis kestabilan yang praktis, informatif, dan cukup akurat. Analisis dilakukan dengan metode integrasi numerik step by step. Pengamatan dilakukan terhadap osilasi antar rotor, keserempakan generator, kemampuan dan kecepatan sistem mencapai keadaan steady state yang baru.Hasil penelitian menunjukkan bahwa gangguan sistem kelistrikan dap

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Razzhivin, I. A. "ASSESSMENT OF THE WIND FARM IMPACT ON POWER SYSTEM STABILITY WHILE REDUCING OF TOTAL INERTIA." Eurasian Physical Technical Journal 18, no. 4 (38) (2021): 45–51. http://dx.doi.org/10.31489/2021no4/45-51.

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With the development of wind power in the world, the issues of joint operation of wind power plants in power systems become relevant. Modern variable speed wind turbines with are connected to the network through power voltage converters, which, with their significant integration into the power systems, negatively affects the transient stability of such systems, the operation of emergency control devices, etc. The problem is caused by the effect of "decoupling" of the wind turbine generators from the power systems, since the connection of the mechanical moment of the wind turbine with the power

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Kita, Hiroyuki, Jun Hasegawa, Naohiro Sato, and Ken-Ichi Nishiya. "Dynamic preventive control strategies for power systems considering transient and midterm stabilities." Electrical Engineering in Japan 115, no. 4 (1995): 14–26. http://dx.doi.org/10.1002/eej.4391150402.

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Saidi, Abdelaziz Salah, Marwa Ben Slimene, and Mohamed Arbi Khlifi. "Transient Stability Analysis of Photovoltaic System with Experimental Shading Effects." Engineering, Technology & Applied Science Research 8, no. 6 (2018): 3592–97. https://doi.org/10.5281/zenodo.2532664.

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This paper presents the transient stability analysis of a photovoltaic (PV) system with account shading effects. Voltage and transient stability effect of PV system are assessed functions of an experimental study. The current advances in shading effect and temperature control of PV panels are studied. The study is performed on modeling and simulation of PV system with account shading effect. A shading effect system is introduced to reflect the transient response characteristics of PV generation model. An experimental setup is designed, constructed and assembled. The setup is provided with the

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Federico, Milano, Ortega Álvaro, and J. Conejo Antonio. "Model-Agnostic Linear Estimation of Generator Rotor Speeds based on Phasor Measurement Units." IEEE Transactions on Power Systems pp (June 13, 2018): 11. https://doi.org/10.1109/TPWRS.2018.2846737.

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The paper focuses on the estimation of the rotor speeds of synchronous machines by means of phasor measurement units. This estimation is aimed at on-line monitoring of electro-mechanical transients and transient stability analysis. The proposed technique is based on the concept of frequency divider formula recently published by the first two authors in these Transactions. The dynamic state estimation is formally stated as a convex optimization problem and a thorough discussion of the sensitivity analysis of the optimal solution is provided. The case study considers a dynamic 1,479-bus model of

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King, Andrew D., Tilo Ziehn, Matthew Chamberlain, et al. "Exploring climate stabilisation at different global warming levels in ACCESS-ESM-1.5." Earth System Dynamics 15, no. 5 (2024): 1353–83. http://dx.doi.org/10.5194/esd-15-1353-2024.

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Abstract. Under the Paris Agreement, signatory nations aim to keep global warming well below 2 °C above pre-industrial levels and preferably below 1.5 °C. This implicitly requires achieving net-zero or net-negative greenhouse gas emissions to ensure long-term global temperature stabilisation or reduction. Despite this requirement, there have been few analyses of stabilised climates, and there is a lack of model experiments to address our need for understanding the implications of the Paris Agreement. Here, we describe a new set of experiments using the Australian Community Climate and Earth Sy

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Astono, Guntur yanuar. "Analisis Transient Stability Gangguan Short Circuit 3 Phase dan Generator Trip pada Sub Sistem Paiton dan Grati." Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) 14, no. 3 (2020): 132–39. http://dx.doi.org/10.21776/jeeccis.v14i3.671.

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Operasi Sistem Tenaga Listrik menyangkut berbagai aspek yang luas, salah satunya adalah stabilitas suplai energi listrik dari pembangkit sampai kepada konsumen. Dalam mempertahankan stabiltas Sistem Tenaga Listrik, diperlukan tindakan yang tepat dari gangguan-gangguan yang dapat terjadi kapan saja. Penelitian ini membahas mengenai stabilitas transien Sub Sistem Paiton dan Grati dari gangguan Short Circuit 3 Phase dan Generator Trip. Pada kasus Short Circuit ditentukan nilai CCT(Critical Clearing Time) didapatkan sebesar 0,97 ms, dan untuk kasus Generator Trip dilakukan tindakan Load Shedding.

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Li, Ming, Chengzhi Wei, Ruifeng Zhao, Jiangang Lu, Yizhe Chen, and Wanli Yang. "A Unified Model of a Virtual Synchronous Generator for Transient Stability Analysis." Electronics 13, no. 17 (2024): 3560. http://dx.doi.org/10.3390/electronics13173560.

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A virtual synchronous generator (VSG) is prone to transient instability under a grid fault, which leads to the loss of synchronization between the new energy converter and grid, and threatens the operation safety of high-proportion new energy grids. There are a variety of control models in the existing VSG control, including active and reactive power models, which lead to their different transient stabilities. However, the evolution characteristics, correlation between different models of VSG, and the internal mechanism affecting transient stability have not been fully studied. To this effect,

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Aiso, Toshiko, Shu Takigami, Akiko Yamaki, and Hiroaki Ohnishi. "Degradation of serum microRNAs during transient storage of serum samples at 4℃." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 55, no. 1 (2017): 178–80. http://dx.doi.org/10.1177/0004563217704233.

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Background Numerous studies demonstrate the potential of circulating microRNAs as non-invasive biomarkers for several diseases. Circulating microRNAs are much more stable than mRNAs and remain largely intact even after prolonged incubation at room temperature. However, recent reports show that microRNAs in serum or plasma samples have diverse stabilities. The aim of this pilot study is to evaluate the stabilities of miR-92a, miR-122 and miR-145 in serum during transient storage at 4℃ before freezing. Methods Serum samples were stored for 24 h at 4℃, and then RNA was extracted from whole serum

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Yang, Liu, and Kai Du. "Dispersion and Thermal Conductivity of Al₂O₃ and TiO₂ Binary Nanofluids." Key Engineering Materials 531-532 (December 2012): 442–45. http://dx.doi.org/10.4028/www.scientific.net/kem.531-532.442.

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The dispersion stabilities and thermal conductivities of Al2O3 and TiO2 ammonia water nanofluids are investigated by the absorbency index methods and transient double-hot-wire method, respectively. The results show that the dispersion stabilities of the two kinds of binary nanofluids are greatly improved by adding surfactants or increasing the ammonia content. The effective thermal conductivity ratios of the two kind of binary nanofluids increase with the increase of the content of nano-particles. It is the same with the increase of the ammonia content. The thermal conductivity will decrease w

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Bouhadouza, B., T. Bouktir, and A. Bourenane. "Transient Stability Augmentation of the Algerian South-Eastern Power System including PV Systems and STATCOM." Engineering, Technology & Applied Science Research 10, no. 3 (2020): 5660–67. https://doi.org/10.5281/zenodo.3934568.

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The transient stability of the 12-bus Algerian southeast power system is studied in this paper. This electrical system has abundant reactive power due to the long transmission lines and generators’ voltage. This capacitive power increases bus voltage which leads to network instability. The use of conventional compensators does not provide adequate and fast solutions. FACTS technology improves the efficiency of these compensators in solving the problem of power system instability efficiently. Among its elements, a synchronous compensator STATCOM control is proposed to decrease bus overvol

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Mohamed, Bey, and Moudjahed Mohamed. "Transient Stability Enhancement Using Phasor Model of Superconducting Magnetic Energy Storage." Bulletin of Electrical Engineering and Informatics 5, no. 1 (2016): 8–16. https://doi.org/10.11591/eei.v5i1.517.

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Superconducting Magnetic Energy Storage (SMES) is one of most important device attracting researchers for enhancing the transient stability of power systems. To facilitate the use of this device in different simulations and studied, a phasor model is established and used to analyse the impact of this device using matlab/Simulink software. The phasor model has enough advantages like using the SMES without need detailed model that contains the electronic power converter and therefore minimize the simulation time. The Western Systems Council Coordinating (WSCC) 3 machine-9 bus system is taken as

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Mojeebalrhman, M. A. Hassan, Sun Xiuyun, and Ate Abdelrahim. "FLC based on static var compensator for power system transient stability enhancement." TELKOMNIKA Telecommunication, Computing, Electronics and Control 18, no. 5 (2020): 2665~2673. https://doi.org/10.12928/TELKOMNIKA.v18i5.15605.

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Transient Stability is the capability of a system to be able to return to its normal state after experiencing large disturbances. The static var compensator (SVC) is a shunt device of the flexible AC transmission systems (FACTS) family using power electronics to improve transient stability in power system. For the SVC control, it is usually used a PI controller, although PI controller is simpler and cheaper but not suitable when power system is subjected to transient stability since power system become non-linear system. In order to overcome this problem, the PI controller combined with Fuzzy

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P., S. D. Bhimaraju, V. S. Ramachandra Murthy K., and Ravindra K. "Effect of Penetration of Wind DGs on Transient Stability of Captive Power Generation Units." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 2653–58. https://doi.org/10.35940/ijeat.C5812.029320.

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This paper presents the analysis of transient stability for industrial generators and the effect of distributed generator units on transient stability has been studied. Here we considered IEEE 39 busses system having one utility bus and 9 captive generation units. It is observed that the voltages at all the buses, decreased when Wind Power DGs are connected. Voltages at all the buses in the system are reduced because of reactive power demand by Induction Generators. The total load of the system is 121.57 MW + j 56.6 MVAr. Critical Clearing Times (CCTs) are obtained without introducing any DG a

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Rodrigue, Armel Patrick Okemba, Raoul MISSETETE Alfred, Rodolphe Gomba, Abba Labane Haroun, and Mobonda Flory Lidinga. "The Conventional Regulation Application on the Stability's Hydroelectric Generators: Case of Imboulou Power Plant Generators in the Republic of Congo." Journal of Scientific and Engineering Research 8, no. 11 (2021): 97–107. https://doi.org/10.5281/zenodo.10619303.

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<strong>Abstract</strong> We present with the modeling of the different constituent parts of an electrical network, namely: The synchronous machine (alternators), transmission electrical lines, transformers and loads. We then present the studied network. A three-phase short circuit on a two-dull line is simulated, it is eliminated by opening the end circuit breakers of the line. The behavior of the system is first studied, when the electrical network is not regulated, and subsequently, the case where the electrical network is regulated, is examined.

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Miah, Abdul. "Localized Transient Stability (LTS) Method for Real-time Localized Control." International Journal of Applied Power Engineering 7, no. 1 (2018): 73–86. https://doi.org/10.11591/ijape.v7.i1.pp73-86.

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Very recently, a new methodology was introduced solely for the purpose of real-time localized control of transient stability. The proposed new method is based on the localized transient stability of a power system. This is completely a new idea in transient stability. In this method, the post-fault power system is represented by a two-generator localized power system at the site of each individual generator. If each of these localized power systems reaches its respective stable equilibrium, then the full power system also reaches its stable equilibrium. Therefore, in terms of real-time localiz

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Budi Laksono, Arief, and Zainal Abidin. "Analisis Aliran Daya dan Stabilitas Sistem Tenaga Listrik Sistem Multi Mesin dengan ETAP." JE-Unisla 5, no. 1 (2020): 297. http://dx.doi.org/10.30736/je.v5i1.423.

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Study of the stability of the power system as an important and complex problem in the operation of a power system that is safe from the power system when there are small or large disruptions in the connected power system. This discussion studies load flow and stability analysis while a multi-machine power system with ETAP software.Single diagram system multi-engine system 9-bus system configured in ETAP. For each multi-machine power system power flow and power flow analysis have been provided a complete tool in ETAP.The results of the load flow data are presented for each case. For the transie

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Khan, H. F., A. H. Hanif, and N. Anwar. "Rotor Angle and Voltage Stability Analysis with Fault Location Identification on the IEEE 9 Bus System." Engineering, Technology & Applied Science Research 10, no. 1 (2020): 5259–64. https://doi.org/10.5281/zenodo.3659578.

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Transient stability is very imperative in multi-machine interconnected power systems in order to scrutinize and analyze the system’s performance and response. Rotor angle stability and voltage stability are studied in this paper. By applying three-phase symmetrical faults, the transient stability of the IEEE 9 bus system is studied. A characteristic double hump is analyzed in the response of the generator, which is nearer to the fault location. By analyzing the characteristic double hump, the fault location in a large interconnected power system can be determined. It is shown that, as th

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Kita, Hiroyuki, Naohiro Sato, Ken-ichi Nishiya, and Jun Hasegawa. "Dynamic Preventive Control Strategies for Power Systems Considering Transient and Mid-Term Stabilities." IEEJ Transactions on Power and Energy 114, no. 6 (1994): 569–76. http://dx.doi.org/10.1541/ieejpes1990.114.6_569.

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Amjady, N. "A Framework of Reliability Assessment With Consideration Effect of Transient and Voltage Stabilities." IEEE Transactions on Power Systems 19, no. 2 (2004): 1005–14. http://dx.doi.org/10.1109/tpwrs.2004.825866.

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Esmaili, Masoud, Nima Amjady, and Heidar Ali Shayanfar. "Stochastic multi-objective congestion management in power markets improving voltage and transient stabilities." European Transactions on Electrical Power 21, no. 1 (2010): 99–115. http://dx.doi.org/10.1002/etep.416.

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Rajarajan, R., and Dr R. Prakash. "Transient Stability Enhancement for Distribution System Using three Phase Unified Power Quality Conditioner with an Intrinsic Power Prediction Technique." Journal of Advanced Research in Dynamical and Control Systems 11, no. 12-SPECIAL ISSUE (2019): 1138–50. http://dx.doi.org/10.5373/jardcs/v11sp12/20193321.

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Surdacki, Paweł, and Łukasz Woźniak. "Influence of the HTS Winding Tape on Limiting the Transient Currents in Superconducting Transformers." Energies 15, no. 5 (2022): 1688. http://dx.doi.org/10.3390/en15051688.

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The article presents an extended computer model of a HTS (high temperature superconducting) 21 MVA 70/10.5 kV transformer with severalfold compound windings, based on a verified PSpice model of 10 kVA transformer with single windings. Two superconducting tapes: SCS12050 (with a copper stabiliser layer) and SF12050 (without a stabiliser) were used in the windings. The circuit model of the transformer developed in the PSpice environment considers Rhyner’s power law and the Jiles–Atherton description of the magnetic hysteresis loop. Two types of transient states were analysed: switching on a supe

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Nur, Ashida Salim, Diyana Shahirah Mohd Zain Nur, Mohamad Hasmaini, Mat Yasin Zuhaila, and Fadilah Ab Aziz Nur. "Multi-machine transient stability by using static synchronous series compensator." International Journal of Power Electronics and Drive System (IJPEDS) 11, no. 3 (2020): 1249–58. https://doi.org/10.11591/ijpeds.v11.i3.pp1249-1258.

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Transient stability in power system is vital to be addressed due to large disturbances that could damage the system such as load changes and voltage increases. This paper presents a multi-machine transient stability using the Static Synchronous Series Compensator (SSSC). SSSC is a device that is connected in series with the power transmission line and produces controllable voltage which contribute to a better performance in the power system stability. As a result, this research has observed a comparison of the synchronization of a three-phase system during single-phase faults before and after

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