山东电力技术2023，Vol.50Issue(12)：76-83,8.DOI:10.20097/j.cnki.issn1007-9904.2023.12.010
基于广义谐振理论的输电线路无源干扰谐振频率求解
A Resonance Frequency Solution to Passive Interference for Power Transmission Lines Using Generalized Resonance
漆照 1刘传彬 2李丹丹 3沈浩 2马国庆2
作者信息
- 1. 山东中实易通集团有限公司,山东 济南,250003
- 2. 国网山东省电力公司电力科学研究院,山东 济南,250003
- 3. 国网山东省电力公司,山东 济南,250000
- 折叠
摘要
Abstract
In order to solve the problem that the passive interference resonance for power transmission lines at medium band frequency can not be fully predicted by using IEEE standard and the existing methods require large calculation quantity,this paper proposes a method for the resonance frequency of passive interference for power transmission lines considering generalized resonance theory.Firstly,based on Poynting theorem,the closed surface including power transmission lines and radio stations is equivalent to a generalized closed system from the perspective of electromagnetic energy balance.Then,according to the complex frequency theory,the relationship expression between the resonant frequency and the Q value of the electromagnetic system consisting of power transmission lines and radio stations is derived.Finally,the scattering field strength samples at observation points are taken,and the system function reflecting the mapping relationship between scattering field strength and frequency is solved by model parameter estimation method.Taking the model for calculating the passive interference of transmission lines as an example on IEEE systems,both rationality and effectiveness of the proposed method are validated by simulation results.The proposed approach can extend the prediction resonance frequency range of passive interference up to 3 MHz.In addition,compared with the moment method,when the sampling points are properly selected,the maximum resonance frequency deviation is within 3%.关键词
输电线路/无源干扰/谐振频率/广义谐振理论/Q值Key words
power transmission lines/passive interference/resonance frequency/generalized resonance theory/Q value分类
动力与电气工程引用本文复制引用
漆照,刘传彬,李丹丹,沈浩,马国庆..基于广义谐振理论的输电线路无源干扰谐振频率求解[J].山东电力技术,2023,50(12):76-83,8.
