Measures for Continuous Commutation Failures of Multi-Infeed HVDC System in Zhejiang Power Grid

doi:10.3969/j.issn.1000-7229.2017.08.014

Abstract

Abstract: ABSTRACT： Aiming at the multi-infeed HVDC continuous commutation failure problem caused by AC system fault in Zhejiang power grid, based on the essence of commutation failures, this paper establishes a typical systematic model to verify the effects of large capacity static var generator （SVG） and synchronous condenser on suppressing the commutation failure. At the same time, this paper adopts voltage-time area method to optimize DC control and protect system, in order to reduce the probability of DC continuous commutation failure. This method can control extinction angle to reduce the continuous commutation failure of multi-infeed HVDC during the grounding fault in AC system. At last, this paper verifies the improvement of voltage-time area method through system test.

Key words: multi-HVDC infeed, commutation failure, synchronous condenser, static var generator （SVG）, extinction angle

CLC Number:

TM 721

FU Junbo，LING Weijia，DENG Hui，WANG Xinbao，HUA Wen，YU Qiuyang. Measures for Continuous Commutation Failures of Multi-Infeed HVDC System in Zhejiang Power Grid

[J]. Electric Power Construction, 2017, 38(8): 102-.

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