| 引用本文: | 张永平,李鹏,李和明.考虑补偿策略的动态电压恢复器补偿量检测方法[J].电力自动化设备,2006,(1):8-12 |
| .Compensation detection of dynamic voltage restorer considering compensation strategies[J].Electric Power Automation Equipment,2006,(1):8-12 |
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| 摘要: |
| 电压补偿量的检测是影响动态电压恢复器(DVR)实时性和补偿精度的关键环节。为了进一步提高DVR的补偿性能,针对用户对补偿策略选取的不同,通过引入目标电压函数,提出改进d-q变换法对电压补偿量进行检测。该方法考虑到电压相位跳变、衰减直流分量、谐波和三相不对称等复杂情况的存在,可以对系统电压跌落的起止时刻、跌落幅值和相位跳变角实时检测,并结合补偿策略直接检测出需要的电压补偿量。通过仿真分析对所提方法的正确性及应用于DVR中的有效性进行了验证。 |
| 关键词: 动态电压恢复器,改进d-q变换法,补偿策略,电压补偿量,目标电压函数 |
| DOI： |
| 分类号:TM761 TM930 |
| 基金项目:国家电力公司重点科研项目(SP11-2002-01-09)，华北电力大学博士学位教师科研基金项目(20041201)~~ |
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| Compensation detection of dynamic voltage restorer considering compensation strategies |
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ZHANG Yong-ping LI Peng LI He-ming
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| Abstract: |
| The detection of voltage compensation is the key factor influencing its real-time performance and compensation accuracy of DVR(Dynamic Voltage Restorer).An improved d-q transform method is presented to further improve its compensation performance according to different compensation strategies of DVR by introducing the object voltage function.It real-timely detects the voltage sag duration,falling magnitude and phase-angle jump,considering decaying DC component,harmonics,unbalanced three-phase voltage and so on.Combined with compensation strategies,it detects the voltage compensation directly.Its validity and effectiveness in DVR are testified successfully by simulation analysis. |
| Key words: dynamic voltage restorer,improved d-q transform method,compensation strategy,voltage compensation,object voltage function |
