基于UPQC的三相電流平衡補(bǔ)償控制
李勇，程漢湘，方偉明，鐘榜
（廣東工業(yè)大學(xué) 自動化學(xué)院，廣東 廣州 510006）
摘 要：統(tǒng)一電能質(zhì)量控制器(UPQC) 控制單元中既要控制靜止同步無功補(bǔ)償器(STATCOM) 又要控制靜止同步串聯(lián)補(bǔ)償器(SSC)，靈活性和速動性降低且成本較高。對UPQC 補(bǔ)償裝置進(jìn)行具體的修改，UPQC 的補(bǔ)償原理主要是通過SSC 交流側(cè)輸出一串聯(lián)的電壓以改變負(fù)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(jìn)行了仿真，結(jié)果表明，該補(bǔ)償裝置提高了控制的靈活性和速動性，且降低了成本。
關(guān)鍵詞：統(tǒng)一電能質(zhì)量控制器；靜止同步無功補(bǔ)償器；靜止同步串聯(lián)補(bǔ)償器；平衡補(bǔ)償；Matlab 仿真
中圖分類號：TM714.3 文獻(xiàn)標(biāo)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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