基于UPQC的三相電流平衡補償控制
李勇，程漢湘，方偉明，鐘榜
（廣東工業大學 自動化學院，廣東 廣州 510006）
摘 要：統一電能質量控制器(UPQC) 控制單元中既要控制靜止同步無功補償器(STATCOM) 又要控制靜止同步串聯補償器(SSC)，靈活性和速動性降低且成本較高。對UPQC 補償裝置進行具體的修改，UPQC 的補償原理主要是通過SSC 交流側輸出一串聯的電壓以改變負載的實際工作電壓，對STATCOM 部分不要實施控制，故將UPQC中STATCOM部分的全控型電力電子器件換成二極管，從而得到了UPQC裝置。以廣東某一變電站為例，計算并用Matlab 進行了仿真，結果表明，該補償裝置提高了控制的靈活性和速動性，且降低了成本。
關鍵詞：統一電能質量控制器；靜止同步無功補償器；靜止同步串聯補償器；平衡補償；Matlab 仿真
中圖分類號：TM714.3 文獻標識碼：A 文章編號：1007-3175(2016)11-0005-06
Three-Phase Current Balance Compensation Control Based on
Unified Power Quality Conditioner
LI Yong, CHENG Han-xiang, FANG Wei-ming, ZHONG Bang
（Faculty of Automation, Guangdong University of Technology, Guangzhou 510006, China）
Abstract: The control unit of unified power quality conditioner (UPQC) controls both the static synchronous reactive compensator (STATCOM) and the static synchronous series compensator (SSC), which can reduce the flexibility and speed of the device, with relatively high cost. The compensation device of UPQC was carried out concrete modification. The compensation principle of UPQC got through the SSC alternating current side and output a series of voltage to change the actual load voltage, without control to the STATCOM, so that the full controlled power electronic devices of STATCOM part in the UPQC could be replaced by the diodes to obtain the UPQC device. Matlab simulation shows that this compensation device improved the flexibility and speed of control and reduces the costs.
Key words: unified power quality conditioner; static synchronous reactive compensator; static synchronous series compensator; balance
compensation; Matlab simulation
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