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High-voltage circuit breakers play a vital role in power system protection, with their breaking capability closely linked to grid stability. Transient Recovery Voltage (TRV) is a key indicator affecting equipment insulation and lifespan. Conventional synthetic circuit methods for TRV testing face limitations such as structural complexity and high costs. This paper introduces a direct test-based design and simulation approach for TRV testing of high-voltage circuit breakers. An equivalent RLC series resonance model is developed, and the quantitative relationships between circuit parameters and TRV characteristics are derived. Core component values for 12 kV to 72.5 kV voltage levels are optimized. The breaking process and TRV waveforms are simulated using MATLAB/Simulink, with parametric influences analyzed. Results demonstrate that the optimized direct test circuit meets GB 1984–2024 standards, accurately replicates TRV features, and offers improved simplicity, cost-effectiveness, and reliability.

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Parameter Design and Simulation Research of High Voltage Circuit Breaker Direct Test Circuit System

  • 会议论文

  • 发表日期：

    2026年

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  • Wang Jinhui,
  • Wang Feiming,
  • Jin Yousheng,
  • Liu Jundi,
  • Wu Hanxu,
  • Li Xingyu,
  • Xu Jianyuan

摘要

High-voltage circuit breakers play a vital role in power system protection, with their breaking capability closely linked to grid stability. Transient Recovery Voltage (TRV) is a key indicator affecting equipment insulation and lifespan. Conventional synthetic circuit methods for TRV testing face limitations such as structural complexity and high costs. This paper introduces a direct test-based design and simulation approach for TRV testing of high-voltage circuit breakers. An equivalent RLC series resonance model is developed, and the quantitative relationships between circuit parameters and TRV characteristics are derived. Core component values for 12 kV to 72.5 kV voltage levels are optimized. The breaking process and TRV waveforms are simulated using MATLAB/Simulink, with parametric influences analyzed. Results demonstrate that the optimized direct test circuit meets GB 1984–2024 standards, accurately replicates TRV features, and offers improved simplicity, cost-effectiveness, and reliability.