Mechanism Analysis of Sub-synchronous Oscillation of Low Voltage Distribution Line Based on Inter-harmonics

LUAN Le; CUI Yiping; XU Zhong; ZHU Mingxing; GAO Min

doi:10.14044/j.1674-1757.pcrpc.2017.05.022

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Mechanism Analysis of Sub-synchronous Oscillation of Low Voltage Distribution Line Based on Inter-harmonics

更新时间：2024-09-14

- Mechanism Analysis of Sub-synchronous Oscillation of Low Voltage Distribution Line Based on Inter-harmonics
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 38, Issue 5, Pages: 114-119(2017)
- 作者机构：
  
  1. 广州供电局有限公司电力试验研究院
  2. 安徽大学教育部电能质量工程研究中心
  3. 安徽武怡电气科技有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2017.05.022
  CLC： TM75;TM712
- Published：2017，
- 稿件说明：
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[1]栾乐,崔屹平,许中,朱明星,高敏.基于间谐波的低压配电线路次同步振荡机理分析[J].电力电容器与无功补偿,2017,38(05):114-119.

LUAN LE, CUI YIPING, XU ZHONG, et al. Mechanism Analysis of Sub-synchronous Oscillation of Low Voltage Distribution Line Based on Inter-harmonics. [J]. Power capacitor & reactive power compensation, 2017, 38(5): 114-119.
[1]栾乐,崔屹平,许中,朱明星,高敏.基于间谐波的低压配电线路次同步振荡机理分析[J].电力电容器与无功补偿,2017,38(05):114-119. DOI： 10.14044/j.1674-1757.pcrpc.2017.05.022.

LUAN LE, CUI YIPING, XU ZHONG, et al. Mechanism Analysis of Sub-synchronous Oscillation of Low Voltage Distribution Line Based on Inter-harmonics. [J]. Power capacitor & reactive power compensation, 2017, 38(5): 114-119. DOI： 10.14044/j.1674-1757.pcrpc.2017.05.022.

摘要

本文基于间谐波理论

针对由串补装置引起的低压配电网次同步振荡问题

从实测数据和机理仿真2个维度

分析了低压系统次同步振荡产生的机理及传递过程

并验证了该低压配电网次同步振荡是由于串补装置等效容抗与低压配电网回路和电动机定子绕组的等效感抗在37.5 Hz附近发生串联谐振

放大了空压机定子回路产生的间谐波电压而造成的。

Abstract

In this paper

in view of the issue of sub-synchronous oscillation of low voltage distribution gridcaused by the serial compensation device based on the inter-harmonic theory

the generation mechanismand transfer process of the sub-synchronous oscillation（SSO in short）of the low voltage system isanalyzed from both dimension of actually measured data and mechanism simulation

and it is verified thatthe SSO is caused by the series resonance of the equivalent capacitance of series compensation device andthe equivalent impedance

concluding the low voltage distribution grid and motor stator winding around at37.5 Hz to enlarge the inter-harmonics of air compressor.

关键词

低压配电线路次同步振荡间谐波串联谐振空压机

Keywords

low voltage distribution linesub-synchronous oscillationinter-harmonicsseries resonanceair compressor

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