Relevant bibliographies by topics / Three-phase distribution feeders

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Three-phase distribution feeders'

Author: Grafiati
Published: 19 February 2023

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Journal articles on the topic "Three-phase distribution feeders"

1

Huang, M. Y., C. S. Chen, C. H. Lin, M. S. Kang, H. J. Chuang, and C. W. Huang. "Three-phase balancing of distribution feeders using immune algorithm." IET Generation, Transmission & Distribution 2, no. 3 (2008): 383. http://dx.doi.org/10.1049/iet-gtd:20070206.

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Lee, Yih-Der, Jheng-Lun Jiang, Yuan-Hsiang Ho, Wei-Chen Lin, Hsin-Ching Chih, and Wei-Tzer Huang. "Neutral Current Reduction in Three-Phase Four-Wire Distribution Feeders by Optimal Phase Arrangement Based on a Full-Scale Net Load Model Derived from the FTU Data." Energies 13, no. 7 (April 10, 2020): 1844. http://dx.doi.org/10.3390/en13071844.

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An increase in the neutral current results in a malfunction of the low energy over current (LCO) protective relay and raises the neutral-to-ground voltage in three-phase, four-wire radial distribution feeders. Thus, the key point for mitigating its effect is to keep the current under a specific level. The most common approach for reducing the neutral current caused by the inherent imbalance of distribution feeders is to rearrange the phase connection between the distribution transformers and the load tapped-off points by using the metaheuristics algorithms. However, the primary task is to obtain the effective load data for phase rearrangement; otherwise, the outcomes would not be worthy of practical application. In this paper, the effective load data can be received from the feeder terminal unit (FTU) installed along the feeder of Taipower. The net load data consisting of customers’ power consumption and the power generation of distributed energy resources (DERs) were measured and transmitted to the feeder dispatch control center (FDCC). This paper proposes a method of establishing the equivalent full-scale net load model based on FTU data format, and the long short-term memory (LSTM) was adopted for monthly load forecasting. Furthermore, the full-scale net load model was built by the monthly per hour load data. Next, the particle swarm optimization (PSO) algorithm was applied to rearrange the phase connection of the distribution transformers with the aim of minimizing the neutral current. The outcomes of this paper are helpful for the optimal setting of the limit current of the LCO relay and to avoid its malfunction. Furthermore, the proposed method can also improve the three-phase imbalance of distribution feeders, thus reducing extra power loss and increasing the operating efficiency of three-phase induction motors.
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Chia-Hung Lin, Chao-Shun Chen, Hui-Jen Chuang, Ming-Yang Huang, and Chia-Wen Huang. "An Expert System for Three-Phase Balancing of Distribution Feeders." IEEE Transactions on Power Systems 23, no. 3 (August 2008): 1488–96. http://dx.doi.org/10.1109/tpwrs.2008.926472.

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Taghipour Boroujeni, Samad, Mohammad Mardaneh, and Zhale Hashemi. "A Dynamic and Heuristic Phase Balancing Method for LV Feeders." Applied Computational Intelligence and Soft Computing 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/6928080.

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Due to the single-phase loads and their stochastic behavior, the current in the distribution feeders is not balanced. In addition, the single-phase loads are located in different positions along the LV feeders. So the amount of the unbalanced load and its location affect the feeder losses. An unbalanced load causes the feeder losses and the voltage drop. Because of time-varying behavior of the single-phase loads, phase balancing is a dynamic and combinatorial problem. In this research, a heuristic and dynamic solution for the phase balancing of the LV feeders is proposed. In this method, it is supposed that the loads’ tie could be connected to all phases through a three-phase switch. The aim of the proposed method is to make the feeder conditions as balanced as possible. The amount and the location of single-phase loads are considered in the proposed phase balancing method. Since the proposed method needs no communication interface or no remote controller, it is inexpensive, simple, practical, and robust. Applying this method provides a distributed and dynamic phase balancing control. In addition, the feasibility of reducing the used switches is investigated. The ability of the proposed method in the phase balancing of the LV feeders is approved by carrying out some simulations.
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Djagolado, Martinus W., Amirullah Amirullah, and Saidah Saidah. "Pengembangan Nominal Aturan Fuzzy pada Metode Fuzzy Mamdani untuk Menyeimbangkan Beban Tiga Phasa pada Saluran Distribusi Tegangan Menengah." Rekayasa 14, no. 3 (December 30, 2021): 431–42. http://dx.doi.org/10.21107/rekayasa.v14i3.10655.

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The use of electrical equipment on the customer side with low voltage absorbs unbalanced power. The load unbalances in each phase will result in an unbalanced current, resulting in a phase voltage shift in the secondary coil of the 20 kV/380 V medium voltage transformer. Shifting the voltage in the distribution transformer phase, then causes the flow of current in the transformer neutral wire causing losses. This paper proposes a fuzzy logic method with the Mamdani fuzzy inference system (FIS) to balance three-phase load currents at seven feeders of 20 kV medium voltage distribution at PLN Rayon Taman Jawa-Timur. The feeders are Ngelom, Tawang Sari, Geluran, Bringin, Masangan Kulon, Palm Residence, and Pasar Sepanjang. There are three input variables used, namely the load current in phase R, phase S, and phase T respectively. There are three output variables in one FIS block, namely changes in load current in phase R, phase S, and phase T respectively. With the number of fuzzy rules as many as 509 rules, the proposed method is able to produce the lowest load current unbalance value of 1.6% at Palm Residence Feeders. The development of a nominal (number) of fuzzy rules in the Fuzzy Logic Method with FIS Mamdani is able to reduce the value of unbalance load current at the 20 kV medium voltage distribution feeder better than the method proposed by previous researchers.
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Chen, Chao-Shun, Te-Tien Ku, and Chia-Hung Lin. "Design of Phase Identification System to Support Three-Phase Loading Balance of Distribution Feeders." IEEE Transactions on Industry Applications 48, no. 1 (January 2012): 191–98. http://dx.doi.org/10.1109/tia.2011.2175352.

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Yandulskyy, Oleksandr, Hanna Trunina, Dmytro Nastenko, and Artem Nesterko. "LOAD BALANCING IN DISTRIBUTION NETWORKS WITH MICRO-SYNCHROPHASORS." Transactions of Kremenchuk Mykhailo Ostrohradskyi National University, no. 3(128) (June 11, 2021): 99–104. http://dx.doi.org/10.30929/1995-0519.2021.3.99-104.

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Purpose. The article discusses new strategies for controlling distribution networks with different, active components using synchronized measurements of voltage and current phase values (magnitude and phase angle) based on the use of high precision micro-synchrophasors (uPMUs), which are adapted to work in distribution networks. Particular attention in the article is focused on the problem of mislabeling of phases and load balancing of distribution network feeders. Methodology. Elements of the optimization theory and matrix calculation were used to develop optimization criteria for initial load balancing problem and minimum switching load balancing problem. Results. The article considers approaches to solving problems arising in distribution power grids under conditions of growth of distributed generation levels. The factors leading to increased uncertainty in forecasting distribution network modes that complicate the tasks of power equipment diagnostics, network topology identification, state assessment and fault location are established. Problems of incorrect phase marking and load symmetry of distribution network feeders are analyzed in detail. Authors proposed an approach to phase identification and feeder load symmetry using micro-synchrophasor data (uPMU) based on the analysis of voltage measurements. The proposed approach is based on comparing the measurements made at the beginning of the feeder with the measurements made in other locations of the feeder considering the constant phase angle shifts of voltage multiples of 30 degrees, which are caused by the phase shift of transformers. The peculiarity of the proposed approach is the ability to solve the problem of phase marking and phase identification using the measuring bodies of uPMUs with accuracy within 1 degree. As a result, based on the information about the actual phase markings, the authors proposed an approach to feeder load symmetry, which is based on solving the optimization problem. The optimization criterion is the minimum by the sum of the norms of the vector of the feeder phase loads for a certain period of time. This article investigates an approach to phase identification in three-phase distribution networks based on the analysis of micro-synchrophasor measurements (uPMU). The proposed approach is based on direct voltage measurements at different feeder locations, taking into account the fact that in an unbalanced three-phase system the time series voltage values at the two ends of one phase should have a much stronger correlation than at the two ends of different phases. This feature makes it possible to solve the problem of marking and identification of phases when using uPMU measuring bodies with accuracy within 1 degree. The proposed approach takes into account, in multiples of 30 degrees, the phase shift due to the presence of D-Y transformers. The proposed approaches will be investigated when creating a monitoring system for electric distribution networks using uPMUs at the pilot site of the Igor Sikorsky KPI campus and elsewhere in cooperation with network operators. Originality. In contrast to the known methods and approaches to the phase identification, proposed method using direct measurements of three phase voltages and thus obtained results do not contain uncertainty. Practical value. Solving the phase marking problem also reduces the number of errors in power equipment diagnostics, network topology identification, condition assessment and fault location. References 11, figures 4.
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Zeng, Yu, Guibin Zou, Xiuyan Wei, Chenjun Sun, and Lingtong Jiang. "A Novel Protection and Location Scheme for Pole-to-Pole Fault in MMC-MVDC Distribution Grid." Energies 11, no. 8 (August 9, 2018): 2076. http://dx.doi.org/10.3390/en11082076.

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Nowadays, the efficient and reliable protection and location schemes for MMC-MVDC (Modular Multilevel Converter-Medium Voltage Direct Current) grid are few. This paper is the first to propose a scheme to not only protect the feeders and the busbar, but locate the segments in MMC-MVDC grid. To improve the reliability, this paper analyzes the transient characteristics of the pole-to-pole fault and then obtains the characteristic frequency band. Based on S-transform, STCFB (S-transform characteristic frequency band) Phase of fault component is utilized to construct the identification criterion for faulty feeder and faulty segment. The whole scheme can be divided into three steps, namely, protection starting criterion, faulty feeder and busbar protection criterion, and faulty segment location criterion. Firstly, the current gradient method is utilized to quickly detect the fault and start the protection device. Secondly, the non-unit protection criterion on busbar and feeders is proposed according to STCFB Phase of the voltage and current fault component. Thirdly, according to the STCFB Phase on both sides of the feeder segment, the faulty segment can be located. A radial MMC-MVDC distribution network model was built in PSCAD/EMTDC software to evaluate the performance of the protection and location method. Simulation results for different cases demonstrate that the proposed scheme has high accuracy, good adaptability and reliability.
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Zhu, Ke, and Rundong Lv. "A Three-Phase Adaptive Reclosure Technology for Distribution Feeders Based on Parameter Identification." IEEE Transactions on Power Delivery 34, no. 6 (December 2019): 2173–81. http://dx.doi.org/10.1109/tpwrd.2019.2911847.

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Pilehvar, Mohsen Shid. "Forming Interphase Microgrids in Distribution Systems Using Cooperative Inverters." CPSS Transactions on Power Electronics and Applications 7, no. 2 (June 30, 2022): 186–95. http://dx.doi.org/10.24295/cpsstpea.2022.00017.

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Interphase-microgrids formed by three islanded single-phase feeders in distribution systems are proposed in this paper. Loss of utility caused by natural and human-made disasters may isolate each residential subdivision from the utility. In this case, the household loads are supplied by distributed generation (DG) units which may not be enough to meet the load demand. This can lead to deviations in voltage and frequency, and the deviations may vary for each phase. The proposed solution is to form an interphase-microgrid by seamlessly interconnecting the islanded single-phase feeders. This interphase-microgrid can effectively balance the load demands and DG generation in distribution systems after losing the utility supply. This paper presents different case studies to demonstrate the viability of forming interphase-microgrids for residential distribution systems.
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Dissertations / Theses on the topic "Three-phase distribution feeders"

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Li, Yun. "Voltage balancing on three-phase low voltage feeder." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/voltage-balancing-on-threephase-low-voltage-feeder(4320ec9a-f287-4e83-86fd-c8e29e8d49f4).html.

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Voltage imbalance in low voltage (LV) networks is expected to deteriorate as low carbon technologies, e.g. electric vehicles (EVs) and heat pumps (HPs) are increasingly deployed. The new electrical demand attributable to EVs and HPs would increase the voltage magnitude variation, increasing the possibility of voltages moving outside the statutory LV magnitude limits. Moreover, the single-phase nature of EVs and HPs, which will be connected via a single-phase 'line & neutral' cable to a 3-phase four-wire LV mains cable buried beneath the street, further entangles this voltage management problem; the non-balanced voltage variations in the three phases boost the levels of voltage imbalance. Excessive voltage imbalance and magnitude variation need to be mitigated to limit their adverse effects on the electric network and connected plant. The voltage imbalance in LV networks is conventionally reduced by reinforcing the network, generally at a high cost. Some modern methods for voltage imbalance mitigation have been introduced in recent years. The power electronic converter based methods are inadequate due to the generation of harmonics, significant power losses and short lifetime. Besides, automatic supply phase selection and smart EV charging rely on an advanced smart communication system, which currently is not available. This project aims to develop alternative solutions that mitigate the voltage imbalance seen in LV networks. A voltage balancing method based on Scott transformer (ST) is proposed. This method does not generate harmonics and is independent of the smart communication system. Computer simulations demonstrated the proposed method is able to convert a non-balanced 3-phase voltage into a balanced 3-phase voltage at either a point on the LV feeder or a 3-phase load supply point with the predefined voltage magnitude. Besides, a physical voltage balancing system was created based on the proposed method and it was tested in an LV network in the laboratory. The test results show the balancing system is capable of maintaining a low level of voltage imbalance on the LV feeder by rapidly compensating for the voltage rises and sags caused by single-phase load variations. This voltage balancing method is a potential solution for the network utilities to accommodate the significant penetration of low carbon technologies without breaching the network voltage limits. The impact of EVs and HPs on the LV network voltages is investigated based on a Monte Carlo (MC) simulation platform, which comprises a statistical model of EV charging demand, profiles generators of residential and HP electrical demand, and a distribution network model. The MC simulation indicates the impact of EVs and HPs is related to their distribution; when more than 21EVs and 13HPs are non-evenly distributed on a 96-customer LV feeder, the voltage limits are likely to be violated. Moreover, the effectiveness of the ST based voltage balancing method and the demand response based TOU tariff, implemented either alone or together, in mitigating the impact of EVs and HPs is investigated based on the established MC simulation platform. The results indicate the ST based balancing method alone is able to completely mitigate the voltage limit violations regardless of the penetration levels of EVs and HPs. Moreover, using both of the two investigated methods further enhances the balancing effectiveness of the ST based voltage balancing method.
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Al-Sabounchi, Ammar M. Munir. "Optimal sizing and location of photovoltaic generators on three phase radial distribution feeder." Thesis, De Montfort University, 2011. http://hdl.handle.net/2086/5225.

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The aim of this work is to research the issue of optimal sizing and location of photovoltaic distributed generation (PVDG) units on radial distribution feeders, and develop new procedures by which the optimal location may be determined. The procedures consider the concept that the PVDG production varies independently from changes in feeder load demand. Based on that, the developed procedures deal with two performance curves; the feeder daily load curve driven by the consumer load demand, and the PVDG daily production curve driven by the solar irradiance. Due to the mismatch in the profile of these two curves the PVDG unit might end up producing only part of its capacity at the time the feeder meets its peak load demand. An actual example of that is the summer peak load demand in Abu Dhabi city that occurs at 5:30 pm, which is 5 hours after the time the PV array yields its peak. Consequently, solving the optimization problem for maximum line power loss reduction (∆PPL) is deemed inappropriate for the connection of PVDG units. Accordingly, the procedures have been designed to solve for maximum line energy loss reduction (∆EL). A suitable concept has been developed to rate the ∆EL at one time interval over the day, namely feasible optimization interval (FOI). The concept has been put into effect by rating the ∆EL in terms of line power loss reduction at the FOI (ΔPLFOI). This application is deemed very helpful in running the calculations with no need to repeat the energy-based calculations on hourly basis intervals or even shorter. The procedures developed as part of this work have been applied on actual feeders at the 11kV level of Abu Dhabi distribution network. Two main scenarios have been considered relating to the avoidance and allowance of reverse power flow (RPF). In this course, several applications employing both single and multiple PVDG units have been solved and validated. The optimization procedures are solved iteratively. Hence, effective sub-procedures to help determine the appropriate number of feasible iterative steps have been developed and incorporated successfully. Additionally, the optimization procedures have been designed to deal with a 3-phase feeder under an unbalanced load condition. The line impedances along the feeder are modeled in terms of a phase impedance matrix. At the same time, the modeling of feeder load curves along with the power flow calculations and the resulting losses in the lines are carried out by phase. The resulting benefits from each application have been evaluated and compared in terms of line power loss reduction at the FOI (∆PLFOI) along with voltage and current flow profile.
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Chiu, Tsung-Hsien, and 邱宗賢. "Three Phase Balancing of Distribution Feeders Using Immune Algorithm." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/63653100889686024269.

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碩士
國立高雄應用科技大學
電機工程系碩士班
95
In this paper, the immune algorithm (IA) is proposed to derive the rephasing strategy of laterals and distribution transformers to enhance three phase balancing of distribution systems. The multi-objective function is formulated by considering the unbalance of phasing currents, the customer service interruption cost and labor cost to perform the optimal rephasing strategy. With the monthly energy consumption of customers served by each transformer, which has been retrieved from the Customer Information System (CIS), the hourly loading of each distribution transformer can be derived. By performing the three phase load flow analysis, the three phase currents and neutral current of each primary trunk line section and each lateral can be calculated. The Immune Algorithm is employed to derive the phase adjustment strategy for laterals and distribution transformers of distribution feeder. To demonstrate the effectiveness of the proposed methodology to enhance three-phase balancing of distribution systems, four practical distribution feeders in Taipower at selected for computer simulation. By minimizing the objective function subjected to the operation constraints, the rephasing strategy has been obtained by selecting the laterals and distribution transformers for phasing adjustment. The phase currents and neutral current of test feeders before and after the execution of proposed rephasing strategy have been collected by the SCADA system in Taipower. After rephasing of laterals and distribution transformers,the three phase balancing of test feeders has been enhanced significantly with the neutral currents to be reduced to be less then the operation limit.
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Guo, Wu-Yi, and 郭武義. "Transformer Load Regulation Strategy For Distribution Feeders Three Phase Unbalance." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/03059815618748867523.

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碩士
國立高雄應用科技大學
電機工程系碩士班
95
With the development of economic, the distribution system becomes more complex followed by the rapid load growth. Therefore the demand on high power quality and reliability have been concerned by customers. Providing stable power supply and better customer service are the main goal of Taipower company. Hence, the distribution engineer evolves a new methodology and technique to efficiently solve the problems related to power quality and operation performance. This paper proposes an artificial immune algorithm (AIA) based distribution transformer optimum phase connecting scheme to relief the feeder three-phase unbalance such that the more robust power supply can be achieved. In this thesis, an entire feeder load balance is defined as antibody as well as the objective function and the optimum distribution transformer phasing connection is defined as an antigen. In the AIA procedure, the affinity relationship among antigen group is applied to increase the diversity among antibody and the intimacy between antibody and antigen is used to avoid the local optimum solution such that the quick convergent speed and the global optimum solution can be achieved. Besides, in this thesis, the outage operation mapping system (OMS) and customer information system (CIS) are applied to evaluate hourly distribution transformers’ phase P/Q loading for three-phase load flow by considering the customer daily load patterns. Finally, a feeder located at kaohsiung district with the mixture of residential and commercial load customers is selected as a testing case for computer simulations. Results show that the proposed AIA can efficiently solve the feeder three-phase unbalance by deriving an optimum solution and the effectiveness and the practicality of the proposed method can be justified.
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Chuang, Che-Jung, and 莊哲榮. "Design and Evaluation of Dynamic Voltage Restorer for the Single-Phase Three-Wires Distribution Feeders." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/beyhzh.

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碩士
國立臺南大學
電機工程學系碩博士班
103
Due to the broader applications of distributed generation and high-capacity charger for EVs in the smart grid, the degree of voltage sag and other transients found in the power distribution system is increasingly serious. In order to maintain a certain high level of electric power quality, developing a voltage stabilizer is emerged as a potential alternative, which can be widely applied near at the customer side in order to mitigate the unexpected voltage disturbances. In this thesis, based on the paradigm of the dynamic voltage-restoring techniques, a design approach for the single-phase three-wired power distribution is proposed. In the method, a system composed of dc power source, an inverter, and coupling capacitor is suggested and connected between the distribution power line and its residential load. When voltage sag takes place, the inverter will be activated to inject a compensation voltage into the series capacitor such that the voltage profile of the power distribution line can be better preserved. In order to confirm the effectiveness of this proposed design, the approach is tested through the theoretical analysis and computer validation. Test results have supported the practicality of the method for considered applications.
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Yu, Y. M., and 余耀明. "Analysis and Improvement of Feeders Three-Phase unbalance in a Distribution System Using Artificial Immune Algorithm." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/99769501350033978293.

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Abstract:
碩士
國立高雄應用科技大學
電機工程系碩士班
95
With the development of economic, the distribution system becomes more complex followed by the rapid load growth. Therefore the demand on high power quality and reliability have been concerned by customers. Providing stable power supply and better customer service are the main goal of Taipower company. Hence, the distribution engineer evolves a new methodology and technique to efficiently solve the problems related to power quality and operation performance. This paper proposes an artificial immune algorithm (AIA) based distribution transformer optimum phase connecting scheme to relief the feeder three-phase unbalance such that the more robust power supply can be achieved. In this thesis, an entire feeder load balance is defined as antibody as well as the objective function and the optimum distribution transformer phasing connection is defined as an antigen. In the AIA procedure, the affinity relationship among antigen group is applied to increase the diversity among antibody and the intimacy between antibody and antigen is used to avoid the local optimum solution such that the quick convergent speed and the global optimum solution can be achieved. Besides, in this thesis, the outage operation mapping system (OMS) and customer information system (CIS) are applied to evaluate hourly distribution transformers’ phase P/Q loading for three-phase load flow by considering the customer daily load patterns. Finally, a feeder with the mixture of residential and commercial load customers is selected as a testing case for computer simulations. Results show that the proposed AIA can efficiently solve the feeder three-phase unbalance by derived an optimum solution and the effectiveness and the practicality of the proposed method can be justified.
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7

Chiu, M. J., and 邱貿瑞. "Analysis and Simulation of Excessive Neutral Current in Three-Phase Four-Wire Multi-Grounded Distribution Feeders." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/93502223566611211692.

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碩士
國立中正大學
電機工程研究所
91
The problem of excessive neutral current has bothered the operation of distribution system for a long time. The high neutral line current will increase losses in the power system, and, even worse, may cause abnormal operations of protection equipment that results in an accidental power failure. The purposes of this thesis are to study the causes of excessive neutral current in distribution feeders. In general, factors affect high neutral current include load characteristics, system components, load transfer and the others. In the study, two actual distribution feeders models are built for ATP simulation to compare with field measurements. In addition, the ground and line-to-line faults occurred in distribution feeders that result ground potential rise of voltage rise of the low-voltage lines are investigated. Studies show that the major factors of high neutral current are load characteristics and the types transformer connections. A well designed load management and distribution automation will improve the distribution power quality and reduce the excessive neutral line current.
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Lee, K. S., and 李坤賢. "Analysis and Mitigation of High Neutral Current in Three-Phase Four-Wire Multi-Grounded Distribution Feeders." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/84861635796330900258.

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碩士
國立中正大學
電機工程研究所
91
The problems associated with high neutral currents in three-phase four-wire systems have deteriorated the quality of distribution systems. The high neutral line current will increase losses in the power system, and, even worse, may cause abnormal operations of protection equipment that results in an accidental power failure. The purposes of this thesis are to investigate the causes of excessive neutral current in distribution feeders and to propose mitigating solutions. In general, factors affect high neutral current include load characteristics, system components, load transfer and the others. Studies show that major factors causing high neutral current are load characteristics and the transformer connections types. To mitigate the problem of high neutral line current, it is suggested that embedding the Management Information system function into Taipower’s distribution automation project could be an effective solution. A well-designed load management and distribution automation program will improve the distribution power quality and reduce the excessive neutral line current.
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(9895361), JE Mayer. "Investigation of voltage quality and distribution capacity issues on long rural distribution feeders and SWER systems." Thesis, 2009. https://figshare.com/articles/thesis/Investigation_of_voltage_quality_and_distribution_capacity_issues_on_long_rural_distribution_feeders_and_SWER_systems/13457702.

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Single Wire Earth Return (SWER) electric distribution feeders are used extensively in remote parts of Queensland and other states, as an economic means to deliver electrical energy to small customer loads, scattered sparsely over vast areas. These SWER systems are normally supplied from very long three-phase distribution feeders. Due to recent strong load growth, voltage quality issues have arisen in these systems. The main SWER feeder problem is poor voltage regulation caused by increasing loads. Three-phase feeder problems include voltage unbalance and phase angle unbalance caused by increasing loads and uneven load distribution. High system network losses are also experienced, as a result of increasing loads. There are several available methods to combat these issues, however, most have not been applied to rural distribution previously. Developing simple, economic solutions to these problems is likely to dramatically improve customer power quality, resulting in reduced customer complaints, whilst improving distribution capacity and reducing losses. The emphasis of this research project is the power system modelling required to develop detailed equipment models that can be used to assess potential solutions identified in the literature. Ergon Energy Corporation in Central Queensland is supporting the project with field data and other information. This thesis has developed detailed models to study voltage regulation of SWER feeders and capacity enhancement of three-phase feeders.
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Huang, Rui, and 黃睿. "FEEDER PARAMETER ESTIMATION AND STATE ESTIMATION FOR THREE-PHASE UNBALANCED DISTRIBUTION SYSTEMS." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/tu9ks4.

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碩士
元智大學
電機工程學系甲組
107
The similarities and differences between state estimation and feeder parameter estimation of distribution systems are analyzed. The algorithms of state estimation and feeder parameter estimation are proposed based on the improved mathematical models and radial basis function neural network (RBFNN). Firstly, the mathematical model of feeder parameter estimation is derived based on the equivalent model of three-phase unbalanced distribution feeders. Four methods including traditional Quasi-Newton method, the improved multi-run optimization (MRO) method based on Quasi-Newton method, the parameter estimation method based on RBFNN and the improved RBFNN method are applied in the derived model. Simultaneously, an improved mathematical model of feeder parameter estimation is built without the unknown phasors of voltage. Therefore, excellent solutions can be obtained by using the two proposed methods based on RBFNN with the improved model. In this thesis, the RBFNN is used to fit the non-linear relationship between the feeder parameters and measured data at two terminals of the feeder. The random errors of measurement devices can be eliminated to obtain the accurate solutions by the improved RBFNN methods. Secondly, a state estimation method is proposed to overcome the deficiency of pseudo-measurement technology. The RBFNN is used for fitting the non-linear relationship between the real-time measured data and the system operating states. Simultaneously, the proposed method can obtain useful data by the mathematical component models of distribution systems and the weighted least squares method. System operating states can be calculated by the proposed method based on the limited actual measured conditions of distribution systems, even without pseudo-measurement technology. Finally, the feasibility of the proposed models and methods have been validated by four IEEE test systems. The requirements of feeder parameter estimation and state estimation are satisfied by the proposed methods in this thesis.
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Book chapters on the topic "Three-phase distribution feeders"

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Rugthaicharoencheep, Nattachote, and Somporn Sirisumranukul. "Optimal Feeder Reconfiguration with Distributed Generation in Three-Phase Distribution System by Fuzzy Multiobjective and Tabu Search." In Energy Technology and Management. InTech, 2011. http://dx.doi.org/10.5772/14233.

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Conference papers on the topic "Three-phase distribution feeders"

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Pilehvar, Mohsen S., and Behrooz Mirafzal. "Interconnection of Three Single-Phase Feeders in North America Distribution Systems." In 2020 International Conference on Smart Grids and Energy Systems (SGES). IEEE, 2020. http://dx.doi.org/10.1109/sges51519.2020.00121.

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2

Berman, Alex, and Nokhum Markushevich. "Analysis of three-phase parallel distribution feeders fed from different substations." In IEEE PES T&D 2010. IEEE, 2010. http://dx.doi.org/10.1109/tdc.2010.5484260.

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Jangra, Jatin, and Shelly Vadhera. "Load flow analysis for three phase unbalanced distribution feeders using Matlab." In 2017 2nd International Conference for Convergence in Technology (I2CT). IEEE, 2017. http://dx.doi.org/10.1109/i2ct.2017.8226252.

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Ramos Bacalhau, João Marcus, and Jussara F. Fardin. "Data Analysis and Preprocessing Method of Medium Voltage Distribution Network Feeders." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.968.

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Abstract:
The investment in the energy sector aims to ensure a continuous, reliable, and quality supply of electrical energy imposed by the electricity regulatory agency with maximum economic-financial balance. This paper discusses the challenges of processing data from medium voltage distribution feeders to use on the distribution network planning. The analysis of missing data and outliers is made on the three-phase voltage, current, and power factor of 459 time series of real feeders. Furthermore, it is proposed a method of preprocessing, and missing data imputation using the unbalanced characteristic between phases, interpolation, and the normalized scaled standard weekday curve. The results show that most missing data are three-phase, however, with a significant amount of single and dual-phase loss that can be filled by the proportion between phases. Hence, the challenge is to fill multiple weeks of missing three-phase data, and for that, it is proposed the use of the standard curve for each day of the week. The method proposed is a promising alternative for data imputation in medium-voltage feeders. The technique is tested using real feeder data degraded by its missing data probability function, and compared with the Naïve approach.
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Chen, C. S., T. T. Ku, and C. H. Lin. "Design of phase identification system to support three-phase loading balance of distribution feeders." In CPS). IEEE, 2011. http://dx.doi.org/10.1109/icps.2011.5890874.

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Lin, C. H., C. S. Chen, T. T. Ku, and C. Y. Ho. "Mitigation of three-phase unbalancing for distribution feeders by rephasing of laterals and distribution transformers." In IEEE PES T&D 2010. IEEE, 2010. http://dx.doi.org/10.1109/tdc.2010.5484542.

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7

Tanaka, Toshihiko, Hirokazu Fukui, and Eiji Hiraki. "A New Current Balancer for Single-Phase Three-Wire Secondary Distribution Feeders Using the Correlation Coefficients." In 2007 Power Conversion Conference - Nagoya. IEEE, 2007. http://dx.doi.org/10.1109/pccon.2007.372953.

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Tanaka, Toshihiko, Tsukasa Sekiya, Hidenori Tanaka, Eiji Hiraki, and Masayuki Okamoto. "Smart charger for electric vehicles with power quality compensator on single-phase three-wire distribution feeders." In 2012 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2012. http://dx.doi.org/10.1109/ecce.2012.6342512.

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Sabi, Yuka, Yuya Kihara, Hiroaki Yamada, Toshihiko Tanaka, Fuka Ikeda, Masayuki Okamoto, and Seong Ryong Lee. "Individual-Phase Displacement Power Factor Control Strategy of an Active Power-Line Conditioner in Three-Phase Four-Wire Distribution Feeders." In 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia). IEEE, 2022. http://dx.doi.org/10.23919/ipec-himeji2022-ecce53331.2022.9807259.

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Tanaka, Hidenori, Toshihiko Tanaka, Takaaki Wakimoto, Eiji Hiraki, and Masayuki Okamoto. "Reduced-capacity smart charger for electric vehicles on single-phase three-wire distribution feeders with reactive power control." In 2013 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2013. http://dx.doi.org/10.1109/ecce.2013.6647398.

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