Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement Technology
This study develops an analytical method for assessing the voltage stability margins of a decentralized load shedding scheme; it then examines the challenges related to the existing load shedding scheme. It also presents a practical application for implementing the proposed method, based on the sync...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-10-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/7/11/277 |
| _version_ | 1798024495604170752 |
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| author | Yunhwan Lee Hwachang Song |
| author_facet | Yunhwan Lee Hwachang Song |
| author_sort | Yunhwan Lee |
| collection | DOAJ |
| description | This study develops an analytical method for assessing the voltage stability margins of a decentralized load shedding scheme; it then examines the challenges related to the existing load shedding scheme. It also presents a practical application for implementing the proposed method, based on the synchrophasor measurement technology in modern power grid operations. By applying the concept of a continuously-computed voltage stability margin index to the configuration of the Thévenin equivalent system, the maximum transfer power could be used as an index to monitor the voltage instability phenomenon and thus determine the required load shedding amount. Thus, the calculated voltage stability margin might be a useful index for system operators in the critical decision-making process of load shedding. Dynamic simulations are performed on real Korean power systems as case studies. Simulation results, when comparing the existing and proposed methods, showed that there was a considerable reduction in the amount of load shedding in the voltage instability scenario. This indicates that the synchrophasor measurement technology has a considerable effect on the proposed load shedding method. The simulation results have validated the performance of the proposed method. |
| first_indexed | 2024-04-11T18:03:21Z |
| format | Article |
| id | doaj.art-aefea17c177b45cbacd258f423ae5957 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-11T18:03:21Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-aefea17c177b45cbacd258f423ae59572022-12-22T04:10:25ZengMDPI AGElectronics2079-92922018-10-0171127710.3390/electronics7110277electronics7110277Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement TechnologyYunhwan Lee0Hwachang Song1Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, KoreaDepartment of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, KoreaThis study develops an analytical method for assessing the voltage stability margins of a decentralized load shedding scheme; it then examines the challenges related to the existing load shedding scheme. It also presents a practical application for implementing the proposed method, based on the synchrophasor measurement technology in modern power grid operations. By applying the concept of a continuously-computed voltage stability margin index to the configuration of the Thévenin equivalent system, the maximum transfer power could be used as an index to monitor the voltage instability phenomenon and thus determine the required load shedding amount. Thus, the calculated voltage stability margin might be a useful index for system operators in the critical decision-making process of load shedding. Dynamic simulations are performed on real Korean power systems as case studies. Simulation results, when comparing the existing and proposed methods, showed that there was a considerable reduction in the amount of load shedding in the voltage instability scenario. This indicates that the synchrophasor measurement technology has a considerable effect on the proposed load shedding method. The simulation results have validated the performance of the proposed method.https://www.mdpi.com/2079-9292/7/11/277synchrophasor measurement technologydecentralized load shedding schemevoltage stabilityphasor measurement unitwide area monitoring and controlcountermeasure method |
| spellingShingle | Yunhwan Lee Hwachang Song Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement Technology Electronics synchrophasor measurement technology decentralized load shedding scheme voltage stability phasor measurement unit wide area monitoring and control countermeasure method |
| title | Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement Technology |
| title_full | Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement Technology |
| title_fullStr | Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement Technology |
| title_full_unstemmed | Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement Technology |
| title_short | Decentralized Load Shedding Method Based on Voltage Stability Margin Index Using Synchrophasor Measurement Technology |
| title_sort | decentralized load shedding method based on voltage stability margin index using synchrophasor measurement technology |
| topic | synchrophasor measurement technology decentralized load shedding scheme voltage stability phasor measurement unit wide area monitoring and control countermeasure method |
| url | https://www.mdpi.com/2079-9292/7/11/277 |
| work_keys_str_mv | AT yunhwanlee decentralizedloadsheddingmethodbasedonvoltagestabilitymarginindexusingsynchrophasormeasurementtechnology AT hwachangsong decentralizedloadsheddingmethodbasedonvoltagestabilitymarginindexusingsynchrophasormeasurementtechnology |