电缆化配电系统高频谐振频移方法

doi:10.11930/j.issn.1004-9649.202006235

中国电力 ›› 2021, Vol. 54 ›› Issue (8): 19-26.DOI: 10.11930/j.issn.1004-9649.202006235

• 电能质量及其治理技术专栏 • 上一篇下一篇

电缆化配电系统高频谐振频移方法

朱明星¹, 孔彬彬¹, 张华赢²

1. 安徽大学电气工程与自动化学院，安徽合肥 230601;
2. 深圳供电局有限公司，广东深圳 518000

收稿日期:2020-06-28 修回日期:2020-12-18 出版日期:2021-08-05 发布日期:2021-08-05
作者简介:朱明星(1968-),男,硕士,副教授,从事电力系统电能质量分析与控制研究,E-mail:xysah@163.com;孔彬彬(1994-),男,通信作者,硕士研究生,从事电力系统电能质量分析与控制研究,E-mail:ahukongbb@163.com;张华赢(1981-),男,硕士,高级工程师,从事电能质量监测、治理及管理工作,E-mail:zhyszpower@163.com
基金资助:
深圳供电局有限公司科技项目(090000KK52180063)

High Frequency Resonance Frequency Shift Method for Cable Distribution System

ZHU Mingxing¹, KONG Binbin¹, ZHANG Huaying²

1. School of Electrical Engineering and Automation, Anhui University, Hefei 230601, China;
2. Shenzhen Power Supply Co., Ltd., Shenzhen 518000, China

Received:2020-06-28 Revised:2020-12-18 Online:2021-08-05 Published:2021-08-05
Supported by:
This work is supported by Science and Technology of Shenzhen Power Supply Co., Ltd. (No.090000KK52180063)

摘要/Abstract

摘要： 为解决电缆化配电网高频谐振问题，提出了一种基于配电网阻抗重构的高频谐振频移方法。首先，分析了电缆化配电网高次谐波源与高频谐振的产生机理。其次，给出了电缆化配电网阻抗重构的高频谐振频移方法，并比较不同无源阻抗重构后的频移及谐振峰抑制效果。然后，结合实际工程案例，利用系统函数绘出伯德图与根轨迹评价该方法对高频谐振治理效果以及系统稳定性的影响，验证了基于电缆化配电网阻抗重构的高频谐振频移方法的有效性，最后研究了无源阻抗参数变化对配电网高频谐振的影响。

关键词: 电缆化, 高频谐振频移, 阻抗重构, 伯德图, 根轨迹

Abstract: In order to solve the problem of high frequency resonance in cable distribution network, a high frequency resonance frequency shift method based on impedance reconstruction of distribution network is proposed. Firstly, an analysis is made of the mechanism of high frequency harmonic source and high frequency resonance in cable distribution network. Secondly, a high frequency resonance frequency shift method is proposed for impedance reconstruction of cable distribution network, and the frequency shift and resonance peak suppression effects are compared after reconstruction of different passive impedances. And then, based on actual project cases, the high frequency resonance suppression effects of the proposed method and its impact on the system stability are evaluated using the Bode diagram and root locus plotted with the system function, and the effectiveness of the proposed method is verified. Finally, the influence of passive impedance parameters on high frequency resonance of distribution network is studied.

Key words: cabling, high frequency resonance frequency shift, impedance reconstruction, Bode diagram, root locus

朱明星, 孔彬彬, 张华赢. 电缆化配电系统高频谐振频移方法[J]. 中国电力, 2021, 54(8): 19-26.

ZHU Mingxing, KONG Binbin, ZHANG Huaying. High Frequency Resonance Frequency Shift Method for Cable Distribution System[J]. Electric Power, 2021, 54(8): 19-26.

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https://www.electricpower.com.cn/CN/Y2021/V54/I8/19

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电缆化配电系统高频谐振频移方法

High Frequency Resonance Frequency Shift Method for Cable Distribution System

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