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针对500 kV变电站66 kV侧投切电容器组的暂态过程，通过仿真模拟正常投切、非同期合闸、单相重燃和两相重燃工况下的五种抑制措施，包括串联电阻、相控断路器、L-R过电压保护装置、RC阻容保护装置和金属氧化物避雷器，并对这五种措施抑制效果进行评估。结果显示，这五种方法对过电压有不同程度的抑制作用，在选择时需综合考虑其优缺点。最后，推荐使用串联电阻或相控断路器进行抑制，并选择适当的避雷器接线方式作为保护措施。
Abstract：This paper aims to analyze the transient process of the 66 kV side switched capacitor bank in the 500 kV substation and compare various suppression methods by simulating five restriction measures under normal switching, asynchronous closing, single-phase reignition and two-phase reignition conditions, including series resistance, phase-controlled circuit breaker, L-R overvoltage protection device, RC resistance-capacitance protection device and metal oxide arrester. The suppression effect of these five measures is evaluated. The results show that these methods have varying degrees of suppression effects on overvoltage, and the advantages and disadvantages need to be considered comprehensively when selecting. Finally, it is recommended to use series resistance or phase-controlled circuit breaker for suppression, and select appropriate arrester wiring methods as protective measures.
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基本信息:
DOI：10.19929/j.cnki.nmgdljs.2024.0082
中图分类号:
引用信息:
[1]白云1,王雪松1,吕鑫1,等.SF6断路器投切66 kV并联电容器组仿真分析[J],2024,42(06):72-81.DOI:10.19929/j.cnki.nmgdljs.2024.0082.
基金信息:
内蒙古电力（集团）有限责任公司内蒙古超高压供电分公司科技项目“并联电容器绝缘老化评估技术及状态诊断方法研究”（LX99222990）