模块化多电平换流阀运行试验回路电流闭环控制方法研究

发布时间：2018-03-05 04:14

本文选题：模块化多电平换流器　切入点：运行试验　出处：《电网技术》2017年12期 　论文类型：期刊论文

【摘要】：模块化多电平换流器在投运前必须通过运行试验来考核其设计是否满足工程要求。根据IEC标准,运行试验需定性和定量地产生实际工况下的电流应力。传统方法主要采用开环控制方式对试验回路电流进行控制,其控制精度和等效性均有待提高。为此,针对H型运行试验拓扑,提出了一种回路中直流电流、基频电流、二倍频电流的闭环控制方法。采用该方法可使上述各电流分量精准快速地跟踪其参考值,从而使运行试验产生的电流应力与实际工况下的电流应力等效。最后,通过仿真与试验验证了所提控制方法的正确性和有效性。
[Abstract]:The modular multilevel converter must be tested by running test before it is put into operation. According to the IEC standard, the design of the modularized multilevel converter meets the engineering requirements. The running test needs to produce the current stress qualitatively and quantitatively under the actual working conditions. The traditional method mainly adopts open-loop control method to control the current of the test loop, and its control precision and equivalence need to be improved. A closed loop control method of DC current, base current and double frequency current in the loop is proposed for H type operation test topology. The method can make each current component accurately and quickly track its reference value. Thus, the current stress produced by the operation test is equivalent to the current stress under the actual working condition. Finally, the correctness and effectiveness of the proposed control method are verified by simulation and test.
【作者单位】：全球能源互联网研究院;先进输电技术国家重点实验室;大功率电力电子北京市重点实验室;
【基金】：国家重点研发计划项目(2016YFB09009)~~
【分类号】：TM46;TM721.1

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