引用本文: | 陈琦,熊良根,刘述军,等.基于双dq变换软件锁相的动态电压恢复器研究[J].电力系统保护与控制,2015,43(4):87-93.[点击复制] |
CHEN Qi,XIONG Lianggen,LIU Shujun,et al.Research of dynamic voltage restorer based on double dq synchronoussoftware phase-locked loop[J].Power System Protection and Control,2015,43(4):87-93[点击复制] |
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摘要: |
动态电压恢复器是一种新型的电能质量调节装置,它能有效地抑制电网电压波动对敏感负载的影响。针对在电网畸变以及不对称跌落的情况下,动态电压恢复器需要准确地捕获基波电压正序相位。采用了一种双dq变换软件锁相环(DDSRF-PLL),不仅能够快速有效地检测电网电压在对称、不对称、不对称且畸变情况下正序基波电压的相位,为动态电压恢复器提供准确的锁相角,同时也具备较好的动态性能,使动态电压恢复器获得较好的补偿结果。在Matlab/Simulink中建立了带超级电容的动态电压恢复器的仿真模型,仿真结果验证了双dq变换软 |
关键词: 动态电压恢复器 DDSRF-PLL 电压不平衡 软件锁相环 电网同步 |
DOI:10.7667/j.issn.1674-3415.2015.04.014 |
投稿时间:2014-05-19 |
基金项目: |
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Research of dynamic voltage restorer based on double dq synchronoussoftware phase-locked loop |
CHEN Qi,XIONG Lianggen,LIU Shujun,YAO Liang |
(Guodian Nanjing Automation Co., Ltd., Nanjing 211100, China;East China Electric Power Design Institute of China Power
Engineering Consulting Group, Shanghai 200063, China;Jiangsu Electric Power Design Institute, Nanjing 211102, China) |
Abstract: |
Dynamic Voltage Restorer (DVR) is a new type of power quality regulating device by which the influence of voltage fluctuation on sensitive loads can be effectively suppressed, under voltage distortion of power network it is necessary to capture the phase of positive sequence fundamental component of voltage accurately. A new decoupled double synchronous reference frame PLL (DDSRF-PLL) is used by which the phase of positive sequence fundamental component of voltage can not only be accurately detected under the condition that in the power system three phases balance sag, unbalance sag, unbalance sag and distorted, but also obtain good dynamic performance, that provide accurate lock phase angle for DVR. Thus a better compensation effect can be achieved by DVR, the simulation model of DVR with super capacitor is built in Matlab/Simulink. The correctness and effectiveness of the proposed method is verified by the simulation results. |
Key words: DVR DDSRF-PLL voltage unbalance soft phase locked loop power synchronization |