| 引用本文: | 郭春林,刘裕昆,肖湘宁,孙 哲.三单相型DVR的分析方法和补偿策略[J].电力自动化设备,2011,31(12): |
| GUO Chunlin,LIU Yukun,XIAO Xiangning,SUN Zhe.Analysis method and control strategy of triple single-phase DVR[J].Electric Power Automation Equipment,2011,31(12): |
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| 摘要: |
| 采用基于暂降前负荷电压的相量图法研究了三单相型动态电压恢复器（DVR）的补偿策略。详细分析了补偿电压和能量回馈限制下的补偿范围，给出了完全补偿策略和最小能量补偿策略的实现方法，所述方法易于实现不平衡电压暂降且负荷不平衡时的补偿。对2种补偿策略进行了对比，其中最小能量补偿可以延长补偿时间，完全补偿控制适用于敏感负荷。通过仿真实现和比较这2种补偿策略，结果验证了理论分析的正确性。 |
| 关键词: 三单相DVR 不平衡电压暂降 不平衡负荷 补偿策略 最小能量控制 |
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| 基金项目:国家科技支撑计划重大项目（2011BAA01B02）；电力系统国家重点实验室开放基金重点项目（SKLD09KZ09） |
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| Analysis method and control strategy of triple single-phase DVR |
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GUO Chunlin, LIU Yukun, XIAO Xiangning, SUN Zhe
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State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources，
North China Electric Power University，Beijing 102206，China
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| Abstract: |
| The phasor diagram based on pre-sag load voltage is applied to study the compensation strategy of triple single-phase DVR. The compensation range under the limitation of compensation voltage and energy feedback is analyzed in detail and the realization of its complete compensation strategy and minimum energy compensation strategy is given，which is suitable for the compensation of unbalanced voltage sag with unbalanced load. The comparison between two strategies shows the minimum energy compensation sustains the compensation longer while the complete compensation is suitable for sensitive load. The validity of theoretical analysis is verified by simulation. |
| Key words: triple single-phase DVR unbalanced voltage sag unbalanced load compensation strategy minimum energy control |
