Research on Calculation and Measurement of Power Frequency Electric Field for Transmission Line

doi:10.11985/2016.05.005

Abstract

Abstract:

Accurate calculation of electric field intensity around the high voltage transmission line is of great significance to industrial production and people's life. Transmission line has a very weak electromagnetic wave transmission characteristics and the surrounding field strength with the increase of the distance, which is difficult to receive and measure the electric field. Modelling near field of the electric field around the transmission line, a measurement method of electric field intensity is presented. By analyzing the induced current on the conductor in the electric field, the power frequency electric field intensity measuring devices is designed and tested. The experimental results verify the efficiency of this method, and provide a simple and practical method to measure electric field intensity in practice.

Key words: Power frequency electric field, electric field measurement element, electric field intensity, electrostatic balance

CLC Number:

TM15

Chen Hao,Zhu Chao,Li Yifeng,Xu Dongli. Research on Calculation and Measurement of Power Frequency Electric Field for Transmission Line[J]. Journal of Electrical Engineering, 2016, 11(5): 40-45.

Figures/Tables 7

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外加电压/kV	电场强度/(kV/m)		相对误差（%）
外加电压/kV	计算值	测量值	相对误差（%）
5	4.167	4.031	-3.264
7	5.833	5.513	-5.486
8	6.667	6.742	1.125
10	8.333	8.695	4.344
11	9.167	9.856	7.516
13	10.833	10.542	-2.686

测量点	电场强度/(kV/m)		相对误差（%）
测量点	本装置	PMM8053A	相对误差（%）
1	2.428	2.342	3.672
2	4.337	4.405	-1.544
3	3.869	3.891	-0.565
4	5.661	5.253	7.767
5	5.598	5.676	-1.374
6	7.573	7.544	0.384
7	4.779	4.872	-1.909
8	3.482	3.549	-1.888
9	6.348	6.728	-5.648
10	5.403	5.427	-0.442
11	5.001	4.873	2.627
12	3.986	4.013	-0.673