混合遗传算法在接地电阻测量中的应用.pdf

第30卷第9期
电子测量与仪器学报
Yol. 30 No 9
2016年9月
OURNAL OF ELECIRONIC MEASUREMENT, AND INSTRUMENTATION
1389
I)0?:10.13382/j. lem.2016.09.013
混合遗传算法在接地电阻测量中的应用
行鸿度何贵先2徐伟?张璇
(1.南京信息工程大学气象灾害垧报換警与评估协同创新中心南京210044;
南京信息工程大学中国气象局气浴胶与云降水重点开发实验室南京210044)
摘要:针对双钳法测量接地电阻时,接地极数量和接地极腐蚀对测量结果造成较大误差的题,提出了一种基于混合遗
传算法(HCA)的接地电阻测量方法。在接地电阻等效模型基础上构建接地方程组,利用遗传算法和梯度下降法优化目标
函数,根据测数据R。求解接地电阻等效模型,实现对接地电阻的测量。仿貞结果表明:所提方法得到的接地电阻最大误
差为1.76%,在接地极腐蚀,接地回路不可的情况下能够提高接地极电阻的测量精度,基本解决双钳法测量接地电阻受
接地柲数量影响的问题
关鍵词:接地电阻;双钳法;接地方程维;不靠?路;混合遗算法
中图分类号:"TM743:TN929.52文献标识码
国家标准学科分类代码
pplication of hybrid genetic algorithm in ground resistance measurement
Xing Hongyan"He
e lixian
Xu Wei"Zhang Xuan
(1. Nanjing University of Information Science Technology, Collaborative Innovation Center on
Forecast and Evaluation of Meteorological Disasters, Nanjing 210044, China; 2. Nanjin
University of Information Science Technology, Key Laboratory for Aerosol-cloud-
Precipitation of China Meteorological Administration, Nanjing 210044, China)
Abstract: Aiming at the faults of the existing measurements that large errors in the measurement results will be
caused by the number and the corrosion of the ground electrodes when the resistance is measured with double clam
method, a ground resistance measuring method based on hybrid genetic algorithm(HGA) is proposed in this
paper. The basic principle is establishing the ground equations based on the equivalent model of ground resistance
According to the actual measuring ground resistance data R, the technology uses the HGA to solve the assessed
parameters of the real values of the ground resistance. The simulation results show that the maximum ground
resistance error measured by HGA is 1. 76%, and it can improve
ne accurac
ey of each electrodes resistance
effectively and ensure the accuracy of on-line monitoring when the loop condition is not reliable or the corrosion of
the ground electrodes, and at the same time overcome the affect of the number of electrodes in traditional method
Keywords: ground resistance; double clam method; ground equations; unreliable loop; hybrid genetic algorithm
设备和运行人员安全中起倒重要的作用?。接地
电阻的测量是衡量接地系统是否达到规程的重要
接地在维护电力系统安全可靠运行、保障电气因素,也是现行防雷安全检测的重要内容。现行的
收稿‖期:2016-06 Received ale:2016-06
基金项日:同家自然科学基金(61671248)、江苏省产学研联合创新资金计划(BY2013007-02)、江苏省高校自然科学研究重大
项目(15KJ)办手90?居、江苏省“信总息与通信工程”优势学科资项目