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Blocking logic of phase selection closing device based on frequency deviation and trail deviation |
YANG Yuanhang1, XIE Liang1, CHEN Peng2, QIAN Bing2, YIN Huaitong2 |
1. Yunnan Power Dispatching Control Center, Kunming 650011; 2. Wenshan Power Supply Bureau of Yunnan Power Grid Co., Ltd, Wenshan, Yunnan 663000 |
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Abstract The action command error of the phase selection closing device may cause damage to the equipment and endanger the operation of the system. Aim at the lack of effective identification and countermeasures against the action risk of phase selection closing, a method of action risk identification based on frequency deviation and trial deviation is proposed. Considering the different needs of safety and success rate for transformer and AC filter, the blocking logic is designed separately. The blocking logic improves the ability of identifying the operation risk of the phase selection closing device, and takes account of the different switching requirements of the transformer and the AC filter. It can effectively reduce the risk of equipment damage and system impact.
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Received: 15 June 2021
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Cite this article: |
YANG Yuanhang,XIE Liang,CHEN Peng等. Blocking logic of phase selection closing device based on frequency deviation and trail deviation[J]. Electrical Engineering, 2021, 22(11): 98-103.
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URL: |
http://dqjs.cesmedia.cn/EN/Y2021/V22/I11/98
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