A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding Time
Transient stability after islanding is of crucial importance because a controlled islanding strategy is not feasible if transient stability cannot be maintained in the islands created. A new indicator of transient stability for controlled islanding strategies, defined as the critical islanding time...
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doaj-62f9cb4c460749f09fee40b75f9dfd692020-11-24T22:57:07ZengMDPI AGEnergies1996-10732018-11-011111297510.3390/en11112975en11112975A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding TimeZhenzhi Lin0Yuxuan Zhao1Shengyuan Liu2Fushuan Wen3Yi Ding4Li Yang5Chang Han6Hao Zhou7Hongwei Wu8School of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaState Grid Zhejiang Ningbo Power Supply Company, Ningbo 315000, ChinaTransient stability after islanding is of crucial importance because a controlled islanding strategy is not feasible if transient stability cannot be maintained in the islands created. A new indicator of transient stability for controlled islanding strategies, defined as the critical islanding time (CIT), is presented for slow coherency-based controlled islanding strategies to determine whether all the islands created are transiently stable. Then, the stable islanding interval (SII) is also defined to determine the appropriate time frame for stable islanding. Simulations were conducted on the New England test system⁻New York interconnected system to demonstrate the characteristics of the critical islanding time and stable islanding interval. Simulation results showed that the answer for when to island could be easily reflected by the proposed CIT and SII indicators. These two indicators are beneficial to power dispatchers to keep the power systems transiently stable and prevent widespread blackouts.https://www.mdpi.com/1996-1073/11/11/2975controlled islandingpower system stabilitytransient stabilitycritical islanding timecritical clearing timestable islanding interval |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhenzhi Lin Yuxuan Zhao Shengyuan Liu Fushuan Wen Yi Ding Li Yang Chang Han Hao Zhou Hongwei Wu |
spellingShingle |
Zhenzhi Lin Yuxuan Zhao Shengyuan Liu Fushuan Wen Yi Ding Li Yang Chang Han Hao Zhou Hongwei Wu A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding Time Energies controlled islanding power system stability transient stability critical islanding time critical clearing time stable islanding interval |
author_facet |
Zhenzhi Lin Yuxuan Zhao Shengyuan Liu Fushuan Wen Yi Ding Li Yang Chang Han Hao Zhou Hongwei Wu |
author_sort |
Zhenzhi Lin |
title |
A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding Time |
title_short |
A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding Time |
title_full |
A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding Time |
title_fullStr |
A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding Time |
title_full_unstemmed |
A New Indicator of Transient Stability for Controlled Islanding of Power Systems: Critical Islanding Time |
title_sort |
new indicator of transient stability for controlled islanding of power systems: critical islanding time |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2018-11-01 |
description |
Transient stability after islanding is of crucial importance because a controlled islanding strategy is not feasible if transient stability cannot be maintained in the islands created. A new indicator of transient stability for controlled islanding strategies, defined as the critical islanding time (CIT), is presented for slow coherency-based controlled islanding strategies to determine whether all the islands created are transiently stable. Then, the stable islanding interval (SII) is also defined to determine the appropriate time frame for stable islanding. Simulations were conducted on the New England test system⁻New York interconnected system to demonstrate the characteristics of the critical islanding time and stable islanding interval. Simulation results showed that the answer for when to island could be easily reflected by the proposed CIT and SII indicators. These two indicators are beneficial to power dispatchers to keep the power systems transiently stable and prevent widespread blackouts. |
topic |
controlled islanding power system stability transient stability critical islanding time critical clearing time stable islanding interval |
url |
https://www.mdpi.com/1996-1073/11/11/2975 |
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