差异化级联式可控用电品质扰动发生装置注入电路参数选择问题分析

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摘要对差异化级联式可控用电品质扰动发生装置注入电路参数选择时的相关问题进行了理论及仿真分析。差异化级联式拓扑包括三个模块：基频模块, 高频模块和整流模块。理论分析结果表明：在采用差异化级联式拓扑设计时, 基频连接电感的大小将会影响到基频模块的输出调节精度、高频模块的承压及电流跟踪性能, 并且会影响高频模块的内部谐波环流量从而影响谐波电流输出量；高频连接电感的选择会影响高频模块的谐波输出。此外, 为了降低高频模块的承压, 可在高频模块注入电路中采取电容和电感串联调谐的方式。但是该方法在一定程度上将会影响基频模块的基波电流输出量。仿真分析结果证明了理论分析的正确性, 并且为装置注入电路参数的选取及下一步装置控制方法的设计提供了参考依据。

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	刘颖英
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关键词 ：电能质量, 扰动发生装置, 级联, 差异化设计, 电路参数

Abstract：Theoretical and simulated analysis on the injection circuit parameters of the controllable custom power quality disturbance-generator which is designed as differentiation cascade type has been done. The topology has three modules: fundamental-frequency module, high-frequency module and rectifier module. The theoretical analysis results show that the regulation precision of fundamental-frequency module’s output, the voltage level of the high-frequency module, the current tracking performance and the harmonic current circumfluence in the high frequency module will be influenced by the fundamental-frequency module’s connected inductor. The harmonic current output of the high-frequency module will be influenced by the high-frequency module’s connected inductor. Furthermore, taking capacitors in series with the inductors in the injection circuit of the high-frequency module is an effective method to reduce the voltage level of the high-frequency module. However this method will influence the output of the fundamental frequency current from the fundamental-frequency module. The simulation results show the correctness of the theoretical analysis and provide a reference for parameter selection of the injection circuit and design of the device’s control methods.

Key words： Power quality disturbance generator cascade differentiation design circuit parameters

收稿日期: 2008-11-14 出版日期: 2014-03-04

PACS:

TM76

基金资助:国家科技支撑计划重点资助项目 (电力电子关键器件及重大装备研制) (2007BAA12B03)

作者简介: 刘颖英女, 1981年生, 博士研究生, 现从事电能质量分析评估与控制方面的研究。孙哲男, 1985年生, 硕士研究生, 现从事电能质量补偿装置控制方面的研究。

引用本文:

刘颖英, 孙哲, 徐永海, 肖湘宁. 差异化级联式可控用电品质扰动发生装置注入电路参数选择问题分析[J]. 电工技术学报, 2010, 25(3): 144-149. Liu Yingying , Sun Zhe , Xu Yonghai, Xiao Xiangning. Analysis of Parameter Selection of Injection Circuit of Differentiation Cascade Type Controllable Custom Power Quality Disturbance-Generator. Transactions of China Electrotechnical Society, 2010, 25(3): 144-149.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2010/V25/I3/144

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