Abstract
72.5 kV environment-friendly circuit breaker is a new type of clean, low-carbon, safe, reliable, technologically advanced and environment-friendly high-voltage electrical equipment to replace the traditional SF6 circuit breaker, it can realize the control, measurement, protection and switching of transmission lines. In this paper, the structural characteristics and performance parameters of 72.5 kV environmental protection circuit breaker are introduced, the arc extinguishing chamber and external insulation electric field of 72.5 kV environmental protection circuit breaker are simulated by simulation analysis software, and the magnetic field of the contact of the arc extinguishing chamber is simulated, it is determined that the contact structure of the arc extinguishing chamber is horseshoe type longitudinal magnetic contact. The calculation results show that the 72.5 kV environmental protection circuit breaker is safe and reliable, and the successful passing of various type tests verifies the rationality of its design and the correctness of the calculation results.
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Acknowledgment
This work is supported by the science and technology project of PingGao Group Co., Ltd. (PGKJ2021-014).
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Yao, C. et al. (2022). Research and Design of 72.5 kV Environmental Protection Circuit Breaker. In: Yang, Q., Liang, X., Li, Y., He, J. (eds) The proceedings of the 16th Annual Conference of China Electrotechnical Society. Lecture Notes in Electrical Engineering, vol 889. Springer, Singapore. https://doi.org/10.1007/978-981-19-1528-4_135
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DOI: https://doi.org/10.1007/978-981-19-1528-4_135
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