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特高压串补装置瞬态地电位升和电磁骚扰的测量方法和系统

DOI: 10.13336/j.1003-6520.hve.2015.01.044, PP. 313-319

Keywords: 特高压交流,串补装置,高电位测量,瞬态地电位升,电磁兼容,电磁骚扰,隔离开关,旁路间隙

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Abstract:

为了对特高压(UHV)串补装置高电位平台上的一次设备绝缘和二次系统电磁兼容(EMC)进行优化设计,需要对隔离开关操作或旁路间隙击穿引起的瞬态地电位升(PPR)和电磁骚扰进行测量。为此,提出了高电位、强电磁环境下的瞬态地电位升和电磁骚扰测量方法。采用电磁屏蔽、直流供电、光纤通信等技术措施,研制了主要由高电位平台上的测量仪器、地面上的监控系统和通信系统组成的瞬态测量系统,该系统包含3个屏蔽区域。进行了特高压串补装置真型试验平台的隔离开关操作试验,获得了瞬态测量信号的幅域、时域和频域等特征。对瞬态测量系统的功能性测试表明其屏蔽效能>40dB,电磁兼容抗扰度满足国标规定的3级及以上且试验评价结果均为A级,工频耐压和冲击耐压分别为4、10kV,主要性能指标满足特高压串补装置瞬态地电位升和电磁骚扰的测量要求。

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