Computational Analysis of Passive Interference Protection Distance from Multi-Circuit Power Transmission Lines to Direction-Finding Stations

doi:10.11930/j.issn.1004-9649.201711078

Abstract

Abstract: Calculation of the passive interference protection distance from transmission lines to small-bore short-wave radio direction-finding stations is critical for engineering design. Based on the operating frequency of the short-wave direction-finding stations, this paper analyzes the effects of the passive interference of single-base tower's height on the short-wave direction-finding stations when the resonant frequencies are λ/4 and 3λ/4 respectively. Then it further concludes a computing method for calculating the passive interference protection distance from multi-circuit transmission lines to the short-wave direction-finding stations on the condition that the total error of direction-finding equipment is less than 1 degree. This approach not only offers more rational, complete and precise protective measures for the electromagnetic compatible problems between transmission lines and short-wave direction-finding stations, but also provides a reference for future engineering design of transmission lines and a basis for preparation of the new industrial standard-Code for Protective Design of Radio Stations against Effect from DC Overhead Transmissiion Line.

Key words: transmission lines, direction-finding stations, passive interference, direction-finding error limit, protective distance

CLC Number:

TM726

CHI Xinghe, WEI Dejun, ZHANG Kun, TIAN Lianbo, LI Shipeng, ZHANG Yong. Computational Analysis of Passive Interference Protection Distance from Multi-Circuit Power Transmission Lines to Direction-Finding Stations[J]. Electric Power, 2018, 51(7): 49-53,107.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201711078

https://www.electricpower.com.cn/EN/Y2018/V51/I7/49

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