Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230544
Byungkwon Park, K. Sun, A. Dimitrovski, Yang Liu, Md Arifin Arif, S. Allu, S. Simunovic
In recent years, a novel Parareal-based approach has been developed for fast transient simulations of large power system interconnections. Parareal belongs to the class of Parallel-in-time algorithms for solution of systems of differential-algebraic equations in parallel over an interval of time. The selection of a reasonably fast and accurate coarse solution is crucial to improve the performance of Parareal algorithm. Semi-analytical solution methods are one promising approach to achieve this goal. They have been investigated, and some preliminary results are presented here. In addition, Parareal-based simulator has been expanded to enable co-simulation with OpenDSS, a widely used open-source distribution system simulator. Preserving the parallel nature of the Parareal approach and taking advantage of the parallel capabilities of the latest versions of OpenDSS, each distribution system can be solved in their entirety on different processors in parallel within the main Parareal simulator. This paper also presents the structure of the transmission and distribution co-simulation and some results with different dynamic models of inverter-based resources in the distribution systems.
{"title":"Performance and Feature Improvements in Parareal-based Power System Dynamic Simulation","authors":"Byungkwon Park, K. Sun, A. Dimitrovski, Yang Liu, Md Arifin Arif, S. Allu, S. Simunovic","doi":"10.1109/POWERCON48463.2020.9230544","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230544","url":null,"abstract":"In recent years, a novel Parareal-based approach has been developed for fast transient simulations of large power system interconnections. Parareal belongs to the class of Parallel-in-time algorithms for solution of systems of differential-algebraic equations in parallel over an interval of time. The selection of a reasonably fast and accurate coarse solution is crucial to improve the performance of Parareal algorithm. Semi-analytical solution methods are one promising approach to achieve this goal. They have been investigated, and some preliminary results are presented here. In addition, Parareal-based simulator has been expanded to enable co-simulation with OpenDSS, a widely used open-source distribution system simulator. Preserving the parallel nature of the Parareal approach and taking advantage of the parallel capabilities of the latest versions of OpenDSS, each distribution system can be solved in their entirety on different processors in parallel within the main Parareal simulator. This paper also presents the structure of the transmission and distribution co-simulation and some results with different dynamic models of inverter-based resources in the distribution systems.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115453902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230547
Kapil Upamanyu, G. Narayanan
Existing methods of synchronous generator emulation utilize simplified synchronous machine models which neglect the effects of stator transients for calculating the terminal voltage. These models are suitable when the load current consists of only a fundamental frequency positive sequence component. Unbalanced and non-linear loads draw currents having negative sequence and other low-order harmonic contents as well. This paper details a method which takes into account the stator transients for emulating a synchronous machine. The performances of the emulated synchronous machines using the proposed and conventional methods are compared with that of an actual generator through simulations. The voltage and current waveforms of the actual generator are found to be much closer to those of the proposed emulator as compared to those of the conventional emulator. The experimental waveforms of the two emulators are observed to be similar to the simulated ones.
{"title":"Power Electronic Based Emulation of Synchronous Generator with Improved Accuracy","authors":"Kapil Upamanyu, G. Narayanan","doi":"10.1109/POWERCON48463.2020.9230547","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230547","url":null,"abstract":"Existing methods of synchronous generator emulation utilize simplified synchronous machine models which neglect the effects of stator transients for calculating the terminal voltage. These models are suitable when the load current consists of only a fundamental frequency positive sequence component. Unbalanced and non-linear loads draw currents having negative sequence and other low-order harmonic contents as well. This paper details a method which takes into account the stator transients for emulating a synchronous machine. The performances of the emulated synchronous machines using the proposed and conventional methods are compared with that of an actual generator through simulations. The voltage and current waveforms of the actual generator are found to be much closer to those of the proposed emulator as compared to those of the conventional emulator. The experimental waveforms of the two emulators are observed to be similar to the simulated ones.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125432999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230564
N. Murali, S. Ushakumari, V. Mini, Alen Toji Varghesee
In the current world of modernisation, the quantity of fossil fuels and petroleum products are tremendously decreasing. Here comes the relevance of Electric Vehicle (EV) due to the available renewable electrical energy sources, effective regenerative braking, improved road handling, and torque top-up capability. Nowadays BLDC motor is commonly used in EV, but due to its vibrations, noise, and high torque ripples PMSM is a better replacement for BLDC in EV applications. Among the EVs, auto-rickshaws and E-rickshaws are the normal vehicles for common people. For E-rickshaws, PMSM can be selected since it exhibits high efficiency, high output torque, and small in size due to its high power density. The construction of PMSM for an E-rickshaw involves a lot of design specifications and calculations. Before the physical construction of PMSM, it is necessary to realize that the designed machine exhibit better performance for EV application. In order to verify these, a virtual development and performance analysis of PMSM is necessary. This paper proposes sizing with vehicle dynamics, analytical design, virtual development, and performance analysis of a three-phase PMSM using Finite Element Analysis (FEA) in Ansys Maxwell platform. The electrical and magneto-static analysis are also included in this paper.
{"title":"Sizing and Performance Analysis of an Electric Motor in an E-rickshaw","authors":"N. Murali, S. Ushakumari, V. Mini, Alen Toji Varghesee","doi":"10.1109/POWERCON48463.2020.9230564","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230564","url":null,"abstract":"In the current world of modernisation, the quantity of fossil fuels and petroleum products are tremendously decreasing. Here comes the relevance of Electric Vehicle (EV) due to the available renewable electrical energy sources, effective regenerative braking, improved road handling, and torque top-up capability. Nowadays BLDC motor is commonly used in EV, but due to its vibrations, noise, and high torque ripples PMSM is a better replacement for BLDC in EV applications. Among the EVs, auto-rickshaws and E-rickshaws are the normal vehicles for common people. For E-rickshaws, PMSM can be selected since it exhibits high efficiency, high output torque, and small in size due to its high power density. The construction of PMSM for an E-rickshaw involves a lot of design specifications and calculations. Before the physical construction of PMSM, it is necessary to realize that the designed machine exhibit better performance for EV application. In order to verify these, a virtual development and performance analysis of PMSM is necessary. This paper proposes sizing with vehicle dynamics, analytical design, virtual development, and performance analysis of a three-phase PMSM using Finite Element Analysis (FEA) in Ansys Maxwell platform. The electrical and magneto-static analysis are also included in this paper.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132073588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230542
T. Vishnu, P. Gopakumar, R. Sunitha
Renewable energy sources have high penetration in today's power grid. Efficient transfer of DC power using existing AC transmission infrastructure is an economically viable means to use renewable energy sources. On the other hand, in AC power transmission, complete utilisation of the transmission line capacity is seldom possible as sufficient margins have to be maintained for transient stability. Composite transmission system facilitates combining AC and DC transmission using zigzag transformers to load the existing transmission line very close to their thermal stability limit. It thereby allows a higher transfer of power through the existing transmission infrastructure. However composite transmission system is vulnerable to transformer saturation under some operating conditions which hamper the power transmission. Hence real time monitoring of the magnetic health of the transformer is necessary to ensure reliable operation of the composite transmission system. This paper proposes a monitoring system wherein the measurements at the transformer terminal are used to assess its magnetic health. A support vector machine classifier is trained to classify the measurements into various operating conditions.
{"title":"Condition Monitoring of Zigzag Transformers in Composite Transmission Lines for Enhanced Transfer of Combined AC and DC Power","authors":"T. Vishnu, P. Gopakumar, R. Sunitha","doi":"10.1109/POWERCON48463.2020.9230542","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230542","url":null,"abstract":"Renewable energy sources have high penetration in today's power grid. Efficient transfer of DC power using existing AC transmission infrastructure is an economically viable means to use renewable energy sources. On the other hand, in AC power transmission, complete utilisation of the transmission line capacity is seldom possible as sufficient margins have to be maintained for transient stability. Composite transmission system facilitates combining AC and DC transmission using zigzag transformers to load the existing transmission line very close to their thermal stability limit. It thereby allows a higher transfer of power through the existing transmission infrastructure. However composite transmission system is vulnerable to transformer saturation under some operating conditions which hamper the power transmission. Hence real time monitoring of the magnetic health of the transformer is necessary to ensure reliable operation of the composite transmission system. This paper proposes a monitoring system wherein the measurements at the transformer terminal are used to assess its magnetic health. A support vector machine classifier is trained to classify the measurements into various operating conditions.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131795254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230578
Xin Liu, N. Nair
This paper reviews phasor measurement units (PMUs) based applications at a distribution level. Distribution-level PMU (DPMU) based applications are summarized and compared from different perspectives. The inter-relations between the existing publication topic areas from D-PMU perspective are drawn. Finally, the current situation and the future direction of scientific research related to D-PMU are discussed.
{"title":"Review on D-PMU based applications for active electricity distribution system","authors":"Xin Liu, N. Nair","doi":"10.1109/POWERCON48463.2020.9230578","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230578","url":null,"abstract":"This paper reviews phasor measurement units (PMUs) based applications at a distribution level. Distribution-level PMU (DPMU) based applications are summarized and compared from different perspectives. The inter-relations between the existing publication topic areas from D-PMU perspective are drawn. Finally, the current situation and the future direction of scientific research related to D-PMU are discussed.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132055296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230577
Sakthivelnathan Nallainathan, A. Arefi, C. Lund, A. Mehrizi‐Sani, David Stephens
This paper proposes a new reliability evaluation method for renewable energy (RE) rich microgrid (MG) systems using a holistic approach by modelling the availability of renewable resources such as solar irradiation and wind along with the equipment availability during each hour. Where an electric network relies heavily on renewable resources the availability of such resources will significantly affect the reliability of the whole system. In addition, energy storage systems (ESSs) impact the reliability of a microgrid. In this paper, the mean time to failure (MTTF) of a RE rich MG system is evaluated based on the MTTF of equipment for different levels of renewable energy generation and energy storage. The loss of load frequency (LOLF) in each hour due to equipment failure, due to resource unavailbalitly, and the system failure due to combined effects were counted in a simulation study of 25 years.
{"title":"Reliability Evaluation of Renewable-Rich Microgrids Using Monte Carlo Simulation Considering Resource and Equipment Availability","authors":"Sakthivelnathan Nallainathan, A. Arefi, C. Lund, A. Mehrizi‐Sani, David Stephens","doi":"10.1109/POWERCON48463.2020.9230577","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230577","url":null,"abstract":"This paper proposes a new reliability evaluation method for renewable energy (RE) rich microgrid (MG) systems using a holistic approach by modelling the availability of renewable resources such as solar irradiation and wind along with the equipment availability during each hour. Where an electric network relies heavily on renewable resources the availability of such resources will significantly affect the reliability of the whole system. In addition, energy storage systems (ESSs) impact the reliability of a microgrid. In this paper, the mean time to failure (MTTF) of a RE rich MG system is evaluated based on the MTTF of equipment for different levels of renewable energy generation and energy storage. The loss of load frequency (LOLF) in each hour due to equipment failure, due to resource unavailbalitly, and the system failure due to combined effects were counted in a simulation study of 25 years.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128855717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230550
E. Gümrükcü, F. Ponci, A. Monti, G. Guidi, S. D'arco, J. Suul
Utilization of the modular multilevel converter (MMC) topology can enable transformer-less interfacing between electric vehicle (EV) charging infrastructure and the power distribution grid. Such configurations are claimed to significantly reduce the system costs, space requirements and complexity for high-power charging facilities. On the other hand, ensuring the correct operation of such system is challenging under unevenly distributed loads in the MMC arms. Proper selection of the charging points to allocate the EVs can limit the loading unbalances between the arms and phases of the MMC system. This paper presents two load allocation strategies. The first strategy takes only the present loading into account, while the second one optimizes the decision according to the individual energy demands of the EVs over time. Simulations demonstrated that the optimized strategy minimizes loading unbalances between the MMC phases and arms during the charging operations. Furthermore, it can contribute to larger demand fulfillment.
{"title":"Optimized Allocation of Loads in MMC-based Electric Vehicle Charging Infrastructure","authors":"E. Gümrükcü, F. Ponci, A. Monti, G. Guidi, S. D'arco, J. Suul","doi":"10.1109/POWERCON48463.2020.9230550","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230550","url":null,"abstract":"Utilization of the modular multilevel converter (MMC) topology can enable transformer-less interfacing between electric vehicle (EV) charging infrastructure and the power distribution grid. Such configurations are claimed to significantly reduce the system costs, space requirements and complexity for high-power charging facilities. On the other hand, ensuring the correct operation of such system is challenging under unevenly distributed loads in the MMC arms. Proper selection of the charging points to allocate the EVs can limit the loading unbalances between the arms and phases of the MMC system. This paper presents two load allocation strategies. The first strategy takes only the present loading into account, while the second one optimizes the decision according to the individual energy demands of the EVs over time. Simulations demonstrated that the optimized strategy minimizes loading unbalances between the MMC phases and arms during the charging operations. Furthermore, it can contribute to larger demand fulfillment.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125459011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230530
Utsav V Patel, A. Maulik, D. Das
An islanded DC Microgrid comprises dispatchable and renewable generation units, battery energy storage systems, and loads. An islanded DC microgrid presents several operational challenges due to load and renewable generation fluctuations. Therefore, a dynamic performance analysis is required to ensure that a DC Microgrid operates satisfactorily. In this study, we have analyzed the dynamic performance of an islanded DC microgrid in detail. Based on the dynamic analysis, we have proposed a primary control method for improving the system dynamic response. We have derived a small-signal model of the entire DC Microgrid and carried out an eigenvalue and participation factor analysis. Based on the participation factor analysis, suitable system states are identified, and a controller is designed for a better transient performance of the system. Time-domain simulations in EMTDC/PSCAD are carried out to verify and establish that the method proposed in this paper yields a satisfactory system performance.
{"title":"Control and Operation of a Small Autonomous DC Microgrid with Improved Dynamic Performance","authors":"Utsav V Patel, A. Maulik, D. Das","doi":"10.1109/POWERCON48463.2020.9230530","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230530","url":null,"abstract":"An islanded DC Microgrid comprises dispatchable and renewable generation units, battery energy storage systems, and loads. An islanded DC microgrid presents several operational challenges due to load and renewable generation fluctuations. Therefore, a dynamic performance analysis is required to ensure that a DC Microgrid operates satisfactorily. In this study, we have analyzed the dynamic performance of an islanded DC microgrid in detail. Based on the dynamic analysis, we have proposed a primary control method for improving the system dynamic response. We have derived a small-signal model of the entire DC Microgrid and carried out an eigenvalue and participation factor analysis. Based on the participation factor analysis, suitable system states are identified, and a controller is designed for a better transient performance of the system. Time-domain simulations in EMTDC/PSCAD are carried out to verify and establish that the method proposed in this paper yields a satisfactory system performance.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126332544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230549
Soumya Kanta, Snigdha Tale, B. ManojKumar
Circuit breaker is an important switching device predominantly used in the utilities. Most recently, it is also being used to perform controlled switching of various passive loads. The concept of controlled energizing is very much dependent on the circuit breaker characteristics like Rate of Decay of Dielectric strength (RDDS) and its scatter. Performing a nearly accurate evaluation of the switching instant is very much required to avoid unintended switching. This paper presents a Binary search algorithm which uses the values of the RDDS and scatter of the breaker to evaluate the optimal zone of energizing. This algorithm can be implemented in numerical relays and in turn can be used to control the energizing of the breakers. The method has been tested in MATLAB and supporting results have been published.
{"title":"Evaluation of Controlled Energization Zone of a Circuit Breaker using Binary Search Algorithm","authors":"Soumya Kanta, Snigdha Tale, B. ManojKumar","doi":"10.1109/POWERCON48463.2020.9230549","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230549","url":null,"abstract":"Circuit breaker is an important switching device predominantly used in the utilities. Most recently, it is also being used to perform controlled switching of various passive loads. The concept of controlled energizing is very much dependent on the circuit breaker characteristics like Rate of Decay of Dielectric strength (RDDS) and its scatter. Performing a nearly accurate evaluation of the switching instant is very much required to avoid unintended switching. This paper presents a Binary search algorithm which uses the values of the RDDS and scatter of the breaker to evaluate the optimal zone of energizing. This algorithm can be implemented in numerical relays and in turn can be used to control the energizing of the breakers. The method has been tested in MATLAB and supporting results have been published.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121794270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-14DOI: 10.1109/POWERCON48463.2020.9230614
Md Zakaria Habib, M. T. Hoq, Sanja Duvnjak Žarković, N. Taylor
Reliability indices of a distribution system can be improved by reducing failure rate and restoration time. A resonant-earthed distribution system has a low failure rate because numerous transient faults become self-extinguishing. However, in such networks, it can be difficult and time-consuming to locate nontransient faults resulting in aggravating the restoration time. This paper analyzes how different fault location methods affect the restoration time and SAIDI. Two major fault location methods are modeled for the calculation of the reliability indices and then applied to a radial feeder of a medium-voltage distribution system. The results show that SAIDI varies depending on the applied fault location method and its accuracy. The influence of fault location methods on labour costs is also discussed.
{"title":"Impact of the fault location methods on SAIDI of a resonant-earthed distribution system","authors":"Md Zakaria Habib, M. T. Hoq, Sanja Duvnjak Žarković, N. Taylor","doi":"10.1109/POWERCON48463.2020.9230614","DOIUrl":"https://doi.org/10.1109/POWERCON48463.2020.9230614","url":null,"abstract":"Reliability indices of a distribution system can be improved by reducing failure rate and restoration time. A resonant-earthed distribution system has a low failure rate because numerous transient faults become self-extinguishing. However, in such networks, it can be difficult and time-consuming to locate nontransient faults resulting in aggravating the restoration time. This paper analyzes how different fault location methods affect the restoration time and SAIDI. Two major fault location methods are modeled for the calculation of the reliability indices and then applied to a radial feeder of a medium-voltage distribution system. The results show that SAIDI varies depending on the applied fault location method and its accuracy. The influence of fault location methods on labour costs is also discussed.","PeriodicalId":306418,"journal":{"name":"2020 IEEE International Conference on Power Systems Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130328964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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