段青;盛万兴;郭祺;沙广林;孙勇;张丽;

• 1:配电变压器节能技术北京市重点实验室(中国电力科学研究院有限公司)
• 2:国家电能变换与控制工程技术研究中心(湖南大学)

摘要(Abstract)：

针对不同电网电压跌落程度下,级联H桥型动态电压恢复器(cascadedH-bridgedynamicvoltagerestorer,CHB-DVR)无法保证输出最大电平的问题,基于级联H桥型变流器输出最大电平下直流侧电压参考值表达式,利用储能侧快速协调,动态调节直流侧电压,以保证CHB-DVR输出最大电平,提高直流侧电压利用率。此外,分析负载电压和电网电压的相位关系及系统有功功率的流动情况,提出CHB-DVR能量自恢复控制策略,可保证CHB-DVR在电网正常时进行能量自恢复,从而省去额外的充电装置,且自恢复初期和末期的柔性切换策略保证整个自恢复过程负载电压幅值不受影响、相角跳变得到很好的抑制。通过仿真验证所提控制策略的正确性和有效性。

关键词(KeyWords)： 动态电压恢复器;最大电平输出;直流储能模块;能量自恢复;柔性切换

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目:交直流无缝混合灵活配电系统基础理论与虚拟现实仿真方法(PD71-17-024)~~

作者(Author): 段青;盛万兴;郭祺;沙广林;孙勇;张丽;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.2653

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