定子撬棒和直流侧卸荷电路协调的故障穿越技术

doi:10.11930/j.issn.1004-9649.2013.12.90.4

中国电力 ›› 2013, Vol. 46 ›› Issue (12): 90-94.DOI: 10.11930/j.issn.1004-9649.2013.12.90.4

定子撬棒和直流侧卸荷电路协调的故障穿越技术

凌禹^{1, 2}, 蔡旭^{1, 3}, 汪宁渤⁴

1. 上海交通大学风力发电研究中心,上海 200240; 2. 山西大同大学电气工程系,山西大同 037003; 3. 上海交通大学海洋工程国家重点实验室,上海 200240; 4. 甘肃电力公司风力发电研究中心,甘肃兰州 730000

收稿日期:2013-09-20 出版日期:2013-12-23 发布日期:2015-12-10
作者简介:凌禹（1975—）,男,山西阳高人,博士研究生,讲师,从事电力电子及其在电力系统中的应用、电机控制以及风力发电等方面的研究。
基金资助:
国家高技术研究发展计划（863计划）资助项目（2012AA050203）

Combination of Stator Crowbar and DC-Link Discharge Resistor for Fault Ride-Through (FRT) of DFIG

LING Yu^{1, 2}, CAI Xu^{1, 3}, WANG Ning-bo⁴

1. Wind Power Research Center, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Department of Electrical Engineering,Shanxi Datong University, Datong, 037003, China; 3. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University,Shanghai 200240, China; 4. Wind Power Research Center, Lanzhou Electric Power Company, Lanzhou 730000, China

Received:2013-09-20 Online:2013-12-23 Published:2015-12-10

摘要/Abstract

摘要： 目前,撬棒（crowbar）保护技术是双馈风电机组实现故障穿越的有效手段之一,但其最大的问题是,保护投入期间,双馈风电机组（doubly fed induction generator,DFIG）处于失控状态,不利于系统稳定。因此,利用定子撬棒方案代替传统撬棒保护已得到广泛关注。然而,仅仅采用定子撬棒的方法,并不能保证直流母线电压在限值之内,为此,提出定子撬棒和直流侧卸荷电路协调的故障穿越方案来解决该问题。首先分析定子串电阻对转子电流故障影响的理论基础,之后,确定和优化所串电阻的大小,分析说明该故障穿越方案的基本工作原理,并利用PSCAD/EMTDC专业仿真软件,验证所提方案的有效性和可行性。

关键词: 风力发电, 双馈感应电机, 故障穿越, 定子串撬棒保护

Abstract: Nowadays, crowbar protection is one of the effective fault ride-through(FRT) methods for a doubly fed induction generator (DFIG). However, the controllability of a DFIG may be lost temporarily. To avoid this problem stator crowbar(SC) protection as an alternative has attracted wide attention. But SC cannot provide the DFIG with desired dc-link voltage. So, a combination of SC and discharge resistor is proposed to improve the capability of FRT of the DFIG. Firstly, the theoretical basis of the SC protection is analyzed in the paper. And then the effect of different SC resistances on the system is investigated, based on which the best SC resistance is determined. Finally, the combination method is detailed and simulation is conducted by using PSCAD/EMTDC to verify the effectiveness of the proposed method.

Key words: wind power generation, doubly fed induction generator (DFIG), fault ride through (FRT), stator series crowbar protection

中图分类号:

TM614

凌禹, 蔡旭, 汪宁渤. 定子撬棒和直流侧卸荷电路协调的故障穿越技术[J]. 中国电力, 2013, 46(12): 90-94.

LING Yu, CAI Xu, WANG Ning-bo. Combination of Stator Crowbar and DC-Link Discharge Resistor for Fault Ride-Through (FRT) of DFIG[J]. Electric Power, 2013, 46(12): 90-94.

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定子撬棒和直流侧卸荷电路协调的故障穿越技术

Combination of Stator Crowbar and DC-Link Discharge Resistor for Fault Ride-Through (FRT) of DFIG

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定子撬棒和直流侧卸荷电路协调的故障穿越技术

Combination of Stator Crowbar and DC-Link Discharge Resistor for Fault Ride-Through (FRT) of DFIG

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