线路杆塔接地参数新模型及测试方法研究

通过现场调查与测试分析,发现了传统输电线路杆塔接地装置电气模型的问题,以及传统接地电阻测试方法的弊病。给出了新的电气参数模型,相应提出了新的测量方法——选择性补偿法。大量现场应用表明,该电气参数模型能真实反映输电线路的接地参数、选择性补偿法能有效鉴别接地效果不良的杆塔接地装置。该研究结果具有很大的现实意义,尤其在山区地带以及新建工程的竣工验收中可发挥更好的监督作用,值得推广应用。

Study for New Parameter Model and Measurement Technique of Grounding Resistance for Poles and Towers

In this paper, the problem about traditional electrical model for the grounding device of transmission line poles and towers is found by field investigation and analysis. And the shortcoming of the test technique about traditional grounding resistance is discussed. A new electrical model is given, and therefore a new test method is proposed. A large number of field application shows that the new electrical model can truly reflect the parameter of transmission line ground. The new measurement method can effe...