三峡电站允许地电位升高试验研究(Ⅱ)——继电保护设备的工频耐压特性研究  

TEST RESEARCH ON TOLERABLE GROUND POTENTIAL RISE OF THREE GORGES HYDROELECTRIC POWER STATION PART TWO: POWER FREQUENCY VOLTAGE WITHSTANDING CHARACTERISTICS OF PROTECTIVE RELAYS

作　　者：蓝磊[1] 文习山[1] 许军[2] 覃利明[2] 张元芳[1] 舒廉甫[2] 陈慈萱[1] 

机构地区：[1]武汉大学电气工程学院,湖北省武汉市430072 [2]长江水利委员会设计院,湖北省武汉市430010

出　　处：《电网技术》2003年第3期5-7,22,共4页Power System Technology

基　　金："九五"国家重点攻关项目(97-312-02-11)。

摘　　要：为了确定提高地网允许电位升高值是否可行,作者在研究了控制电缆的工频耐压特性之后在本文中又研究了继电保护设备的工频耐压特性对该值的影响,并进行了试验。结果表明,继电器绝缘的工频耐压特性是影响这一数值的关键因素。To determine whether it is possible or not to increase the value of the tolerable ground potential rise, after the research of power frequency voltage withstanding characteristics of control cables in part one of this paper, the influence of power frequency voltage withstanding characteristics of protective relays on tolerable ground potential rise was studied and corresponding tests were carried out. The test results show that the power frequency voltage withstanding characteristics of the insulation of protective relays are the key factor influencing tolerable ground potential rise.

关 键 词：三峡电站 地电位升高 试验 继电保护设备 工频耐压特性 

分 类 号：TV632.63[水利工程—水利水电工程] TM774[电气工程—电力系统及自动化]