| 引用本文: | 党存禄,严 鋆,张晓英.基于软件锁相环的动态电压恢复器补偿策略[J].电力自动化设备,2010,(11): |
| DANG Cunlu,YAN Jun,ZHANG Xiaoying.Compensation strategies based on SPLL for dynamic voltage restorer[J].Electric Power Automation Equipment,2010,(11): |
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| 摘要: |
| 根据负荷对电压幅值、相位跳变的敏感程度，可连续运行动态电压恢复器（UDVR）采用不同的电压补偿策略，常见的有跌落前电压补偿法和同相电压补偿法。利用相量图简述了上述2种方法，并提出一种改进的综合电压补偿法。通过调整软件锁相环（SPLL）的输入整定值和PI调节器参数，分别实现了跌落前电压补偿法、同相电压补偿法及改进的综合电压补偿法，并在Matlab／Simulink仿真软件下进行了单相电压跌落补偿实验。仿真结果表明，改进的综合电压补偿法比传统的同相电压补偿法更能有效缓解由电压跌落带来的相位跳变；与传统的跌落前电压补偿法相比，该方法也能有效减小UDVR的注入电压幅值。 |
| 关键词: 电能质量 电压跌落 可连续运行动态电压恢复器 补偿策略 软件锁相环 |
| DOI： |
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| 基金项目:兰州理工大学优秀青年教师培养资助项目（Q200814） |
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| Compensation strategies based on SPLL for dynamic voltage restorer |
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DANG Cunlu, YAN Jun, ZHANG Xiaoying
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School of Electrical and Information Engineering，Lanzhou University of Technology，Lanzhou 730050，China
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| Abstract: |
| According to the sensitivity of load to voltage amplitude or phase jump，UDVR（Uninterrupted Dynamic Voltage Restorer） adopts different compensation strategies，such as pre-sag compensation strategy and in-phase compensation strategy，which are introduced with phasor diagram. An improved integrated compensation strategy is proposed. Three strategies mentioned above are respectively implemented by adjusting the settings of SPLL（Soft Phase Locked Loop） and the parameters of PI controller. Matlab／Simulink based experiments for single-phase voltage sag compensation verify that，compared with the in-phase compensation strategy，the improved integrated strategy mitigates the phase jump，and compared with the pre-sag compensation strategy，it decreases the injecting voltage amplitude of UDVR. |
| Key words: power quality voltage sag UDVR compensation strategy soft phase locked loop |
