吴雨,薛安成,付潇宇,王子哲
WU Yu,XUE Ancheng,FU Xiaoyu,WANG Zizhe

• 1:国网江苏省电力有限公司无锡供电公司
• 2:新能源电力系统国家重点实验室(华北电力大学)

摘要(Abstract)：

随着大量电力电子设备接入电力系统以及双馈风机的应用,发生在直流外送系统中的高频振荡问题受到广泛关注。为此,开展了高频扰动下双馈风机系统的频率响应及其振荡风险研究。一方面,通过仿真分析验证了高频扰动下双馈风机系统存在类似次同步扰动下的多频率响应,揭示了高频扰动下双馈风机并入系统的多频率特性;另一方面,采用扫频法和阻抗法分析了200~1 100 Hz频段内双馈风机系统的阻抗频率特性,验证了基于简化模型的阻抗法分析高频振荡风险的有效性,并初步评估了特定参数下的双馈风机系统高频振荡风险。
The high-frequency oscillation occurred in HVDC transmission system is widely focused with the grid access of power electronics and the application of doubly fed induction generator(DFIG). This paper studies the frequency response of DFIG system under and high-frequency disturbance and analyzes its oscillation risk. On the one hand, multi-frequency response of DFIG under high-frequency disturbance similar with subsynchronous disturbance is verified through simulation analysis, and the multi-frequency characteristic of the DFIG under high-frequency disturbance is revealed; on the other hand, the impedance frequency characteristics of DFIG system from 200 to 1 100 Hz are analyzed through frequency sweeping method impedance method, verifying the effectiveness of the proposed impedance method based on the simplified model and evaluating the risk of the high-frequency oscillation for the DFIG system under specified parameters.

关键词(KeyWords)： 高频振荡;双馈风机;多频率响应;转子侧换流器;网侧换流器
high-frequency oscillation;DFIG;multi-frequency response;rotator-converter;grid-side converter

Abstract:

Keywords:

基金项目(Foundation): 国家重点研究发展计划项目(2017YFB0902000);; 国家自然科学基金项目(G51477050)

作者(Author): 吴雨,薛安成,付潇宇,王子哲
WU Yu,XUE Ancheng,FU Xiaoyu,WANG Zizhe

DOI: 10.19585/j.zjdl.201811005

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