计及GSC电流和控制策略的DFIG稳态故障电流计算模型

CHEN Peng

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计及GSC电流和控制策略的DFIG稳态故障电流计算模型

更新时间：2025-08-13

- 计及GSC电流和控制策略的DFIG稳态故障电流计算模型
- Automation of Electric Power Systems Vol. 40, Issue 16, Pages: 8-16(2016)
- 作者机构：
  
  强电磁工程与新技术国家重点实验室, 华中科技大学,湖北省,武汉市,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016
- 稿件说明：
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CHEN Peng. [J]. Automation of electric power systems, 2016, 40(16): 8-16.
DOI：

CHEN Peng. [J]. Automation of electric power systems, 2016, 40(16): 8-16. DOI：

摘要

电网故障情况下

双馈风电机组(DFIG)的故障电流特性非常复杂

特别是DFIG的撬棒保护未动作时

其馈入电网的故障电流与其所采用的低电压穿越控制策略以及网侧变流器(GSC)特性等因素有关。为满足含DFIG的电网故障分析和保护整定计算的需求

针对DFIG的几种典型低电压穿越控制策略

分别建立了计及GSC电流影响的DFIG统一稳态故障电流计算模型

并通过数字仿真验证了所提出的故障电流计算模型的正确性。

Abstract

The fault current of doubly-fed induction generator(DFIG)is highly complicated when a symmetrical or asymmetrical fault occurs in the grid. Especially

when DFIG's crowbar is not input under nonsevere fault conditions

the fault current of DFIG fed into the grid is rated to its control strategies

the grid's reactive power demand

converters' capacity

etc. In order to meet the demand of fault analysis and relaying protection setting for the grid with DFIGs

according to different control strategies of DFIG during the fault

this paper puts forward a novel steady fault current calculation model of DFIG considering grid side converter current and different control strategies. Then

the grid-side converter current influence on DFIG's fault current is analyzed. Finally

the correctness of the model proposed is verified by digital simulation. This work is supported by National Natural Science Foundation of China(No. 51177058).

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