基于场路耦合的500 kV氧化锌避雷器受潮缺陷分析  被引量:15

Analysison Damp Defect of 500 kV Zinc Oxide Arrester Based on Field-Circuit Coupling

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作  者:刘尉 肖集雄 金硕 杨帅 高萌[1] 张园园 LIU Wei;XIAO Jixiong;JIN Shuo;YANG Shuai;GAO Meng;ZHANG Yuanyuan(Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System,Hubei University of Technology,Wuhan 430068,China;Technology Training Center,State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430079,China)

机构地区:[1]湖北工业大学太阳能高效利用及储能运行控制湖北省重点实验室,武汉430068 [2]国网湖北省电力有限公司技术培训中心,武汉430079

出  处:《电瓷避雷器》2022年第1期118-125,共8页Insulators and Surge Arresters

摘  要:氧化锌避雷器是电网中过电压防护的重要设备,其健康状况直接关系到电力系统的安全稳定运行。以500 kV氧化锌避雷器为研究对象,构建相应的阻容网络模型与有限元温度场计算模型,对避雷器在不同运行状态下的泄漏电流及温度分布进行仿真分析,以获取受潮等典型缺陷的缺陷特征及变化规律。根据分析结果,发生受潮时,避雷器受潮区域会呈现局部过热,流经避雷器的泄漏电流幅值随着受潮程度的加剧而增大,避雷器的相角则会随着受潮程度的加剧而减小。Zinc oxide arrester is an important equipment for overvoltage protection, and its working condition is directly related to the safe and stable operation of power system. Corresponding resistance capacitance network and finite element temperature field calculation model of 500 kV zinc oxide arrester are established to obtain the defect characteristics by studying the leakage current and temperature distribution of the arrester under different operating conditions. According to the analysis results, the area affected by moisture of the lightning arrester will present local overheating, the amplitude of leakage current flowing through the lightning arrester will increase with the aggravation of the degree of moisture, and the phase angle of the lightning arrester will decrease with the aggravation of moisture.

关 键 词:氧化锌避雷器 阻容网络 有限元法 温度分布 阻性泄漏电流 

分 类 号:TM862[电气工程—高电压与绝缘技术]

 

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