| 考虑补偿策略的动态电压恢复器补偿量检测方法 |
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| 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,2006,26(1):8-12. |
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| 作者姓名： | 张永平 李鹏 李和明 |
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| 作者单位： | 华北电力大学,电力系统保护与动态安全监控教育部重点实验室,河北,保定,071003 |
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| 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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| 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。
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| 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 |
| 文章编号： | 1006-6047（2006）01-0008-05 |
| 收稿时间： | 2005-06-23 |
| 修稿时间： | 2005-06-232005-09-26 |
Compensation detection of dynamic voltage restorer considering compensation strategies |
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| ZHANG Yong-ping,LI Peng,LI He-ming.Compensation detection of dynamic voltage restorer considering compensation strategies[J].Electric Power Automation Equipment,2006,26(1):8-12. |
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| Authors: | ZHANG Yong-ping LI Peng LI He-ming |
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| Affiliation: | North China Electric Power University,Baoding 071003,China |
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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. |
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| Keywords: | dynamic voltage restorer improved d-q transform method compensation strategy voltage compensation object voltage function |
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