一种基于多导体静电耦合原理的非接触式过电压测量方法

发布时间：2018-12-28 15:45

【摘要】：为了能够安全和方便地测量电网过电压,本文提出一种基于多导体静电耦合原理的非接触式电网过电压测量新方法。介绍了非接触测量电压的理论基础,建立了并联小电容后非接触过电压测量传感方法器的新数学模型。通过测量感应线非接触传感器的感应的电压信号,再根据数学模型中转移矩阵计算推算出母线实际的电压值。采用ATP软件对三相非接触电压传感器进行稳态和暂态过程的仿真,在国家电网公司电力科学研究院电力工业电气设备质量检验测试中心搭建了工频过电压试验平台和雷电过电压试验平台,并进行了第三方试验。仿真和第三方试验结果均表明通过采用该非接触式电网过电压测量方法可以有效地测量出电网过电压。该方法还具有成本低廉、结构简单、安全性高、方便移动和无电磁饱和问题影响等优点。
[Abstract]:In order to measure the overvoltage safely and conveniently, a new method of non-contact overvoltage measurement based on the principle of multi-conductor electrostatic coupling is proposed in this paper. This paper introduces the theoretical basis of non-contact voltage measurement, and establishes a new mathematical model of non-contact overvoltage sensor after shunt small capacitance. By measuring the inductive voltage signal of the induction line non-contact sensor, the actual voltage value of the bus is calculated according to the transfer matrix in the mathematical model. The steady-state and transient processes of three-phase contactless voltage sensor are simulated by ATP software. The power frequency overvoltage test platform and lightning overvoltage test platform have been set up in the Power Industry Electrical equipment quality Test Center of the State Grid Research Institute of the State Grid Corporation and a third party test has been carried out. Both the simulation and the third party test results show that the method can effectively measure the overvoltage of the power network by using the method of non-contact network overvoltage measurement. This method also has the advantages of low cost, simple structure, high safety, convenient movement and no electromagnetic saturation problem.
【作者单位】：武汉大学电气工程学院;湖北省电力勘测设计院;国网湖北省电力公司电力科学研究院;
【基金】：国家自然科学基金(50807041) 中国亚太经合组织合作基金武汉市科技攻关计划(2013060501010164) 武汉市青年科技晨光计划(2013070104010010) 中央高校基本科研业务费专项资金(2042014kf0233)资助项目
【分类号】：TM933.2

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