高压微网孤岛运行时频率稳定控制策略研究  

Control Strategies of Frequency Stability for Islanding High-voltage Microgrids

作　　者：张明锐[1] 杜志超[1] 黎娜[1] 陈洁[1] 

机构地区：[1]同济大学电子与信息工程学院,上海市嘉定区201804

出　　处：《中国电机工程学报》2012年第25期20-26,6,共7页Proceedings of the CSEE

基　　金：教育部留学回国人员科研启动基金资助项目(080024-10012);中央高校基本科研业务费专项资金资助项目(0800219169)~~

摘　　要：当采用大量电力电子设备的微网孤岛运行时,使用P/f下垂控制存在负荷快速分配与频率稳定控制之间的矛盾,为此,提出改进的P/和Q/V下垂控制策略,将电压和相角偏差作为前馈量加入功率控制环节,实现电压和相角的二次调整,提高潮流变化时系统的动态适应性。仿真分析表明,所提出的控制策略不仅可实现负荷快速分配,而且相比P/f下垂控制具有更小的频率偏差,为高压微网孤岛运行时频率稳定控制提供了一种新方法。For the microgrid with power electronic devices operating in islanding mode, the P/f droop control strategy would result in the contradiction between fast load sharing and frequency stability control. This paper put forward an improved P/,δ and Q/V droop control strategy in which the voltage and angle deviation was added to power control block as a feed forward quantity to achieve secondary regulation of the voltage and angle. This method can improve the dynamic performance of the system when load changes. The simulation and analysis demonstrate that the proposed control strategy provides fast proper load sharing and achieves smaller frequency deviation compared with P/f droop control strategy. This paper provides a new strategy to steady frequency for the islanding high-voltage microgrid.

关 键 词：微网 未来可再生电能传输和管理 P/控制 P/f控制 孤岛模式 负荷分配 频率稳定 

分 类 号：TM71[电气工程—电力系统及自动化]