Numerical Simulation of Radio Interference Caused by DC Corona Being Adjacent to AC Transmission Lines

WANG Zhenguo; LU Tiebing; LIU Yang

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Numerical Simulation of Radio Interference Caused by DC Corona Being Adjacent to AC Transmission Lines

更新时间：2025-12-08

- Numerical Simulation of Radio Interference Caused by DC Corona Being Adjacent to AC Transmission Lines
- Vol. 43, Issue 3, Pages: 1000-1005(2017)
- 作者机构：
  
  华北电力大学新能源电力系统国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：10 March 2017，
  
  Published：2017
- 稿件说明：
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WANG Zhenguo, LU Tiebing, LIU Yang. Numerical Simulation of Radio Interference Caused by DC Corona Being Adjacent to AC Transmission Lines[J]. 2017, 43(3): 1000-1005.
DOI：

WANG Zhenguo, LU Tiebing, LIU Yang. Numerical Simulation of Radio Interference Caused by DC Corona Being Adjacent to AC Transmission Lines[J]. 2017, 43(3): 1000-1005. DOI：

摘要

交直流并行架设是一种提高输电走廊容量的有效方式

而邻近的交流线路会使直流线路表面电场叠加上交流分量。由于电晕放电的特性直接取决于电场的大小

因此邻近的交流线路会直接影响直流输电线路上的电晕电流脉冲特性

进而对直流线路引起的无线电干扰产生影响。为此

采用电磁干扰（electron-magnetic interference

EMI）接收机的准峰值响应结果来表征无线电干扰的大小

利用数值方法对接收机准峰值响应的动态过程进行了模拟

并将计算结果与CISPR标准及实验结果对比

验证了数值方法的有效性。针对邻近交流线路时直流电晕电流脉冲呈簇状分布的情形

利用数值模型分析了脉冲分布模式以脉冲特性对接收机准峰值检波器动态输出特性的影响。计算结果表明:邻近交流线路时直流导线电晕放电产生的无线电干扰问题主要取决于电晕电流脉冲的平均重复频率以及脉冲的幅值

脉冲分布模式的改变对它的影响可以忽略;准峰值检波器输出值正比于脉冲幅值

同时随脉冲重复频率的增加而升高

但是随脉冲重复率进一步增加

它升高的趋势变缓。该结果可以为交直流并行架设时的无线电干扰问题提供有益参考。

Abstract

Hybrid HVAC-HVDC transmission line is an efficient way to enhance the transport of bulk electric power from the corridor.However

due to the existence of adjacent AC transmission line

the DC line surface electric field will be superimposed with AC component.Since the characteristics of corona discharge is directly determined by the intensity of electric field

the superimposed AC component will inevitably change the characteristics of corona current pulses from the DC transmission line.Hence

the radio interference caused by the DC transmission line will be distorted.The quasi-peak response of electron-magnetic interference（EMI） receivers is generally used to characterize the radio interference.In this paper

a numerical method was presented to simulate the quasi-peak response in time domain.The validity of the method was verified by comparing with CISPR specifications as well as with the measured results of an EMI receiver.The quasi-peak response of EMI receiver to positive corona current pulses that were adjacent to AC transmission lines was analyzed.The result shows that the radio interference from DC conductors that are adjacent to AC conductors mainly depends on the mean repetition frequency and the amplitude of the corona current pulses

the effect of distribution pattern of corona current pulses can be ignored.The quasi-peak response is proportional to the amplitude of the corona pulses

and increases with the repetition frequency in gradually slow manner.The results can provide useful references for the radio interference problem from hybrid AC-DC transmission lines.

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