Study on Selective Phase Breaking Technology of High Voltage Circuit Breaker

2021 3rd International Conference on Electrical Engineering and Control Technologies (CEECT) Pub Date : 2021-12-01 DOI:10.1109/CEECT53198.2021.9672657

Liao Zhixin, Yuan Ting, Liu Shusen, Yao Xinxin, Wang Jue

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Abstract

As the grid load increases and the short-circuit current of the regional grid affects the breaking capacity of circuit breakers, this paper studies the real-time evaluation of the short-circuit breaking capacity of high-voltage AC circuit breakers and the method of phase-selection breaking control, and proposes a selection based on grid parameters Control strategy for phase breaking. The basic principle of phase-selective breaking is described, various parameters of circuit breaker breaking performance are analyzed, the electric grid breaking arc model is established, and the arc resurgence probability is analyzed. The 61-node real power grid topology and related parameters are selected, the short-circuit point is set, and the overvoltage and arc reignition probability of three-phase breaking and phase-selective breaking are compared and analyzed by simulation software. The simulation results prove the phase-selective breaking proposed in this paper. The effectiveness and superiority of the strategy.

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高压断路器选择性断相技术研究

随着电网负荷的增加和区域电网的短路电流对断路器分断能力的影响，本文研究了高压交流断路器短路分断能力的实时评估和选相分断控制方法，提出了一种基于电网参数选择的分相控制策略。阐述了相选择分断的基本原理，分析了断路器分断性能的各项参数，建立了电网分断电弧模型，分析了电弧回燃概率。选择61节点真实电网拓扑结构及相关参数，设置短路点，通过仿真软件对三相分断和择相分断的过电压和燃弧概率进行对比分析。仿真结果证明了本文提出的相位选择破缺方法的有效性。战略的有效性和优越性。

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2021 3rd International Conference on Electrical Engineering and Control Technologies (CEECT)

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