摘要
利用直流配电网中电压源变流器主动控制传输功率的能力,可以实现多个配电分区之间的潮流交换。提出一种基于下垂控制的互联配电分区负载率均衡控制方法,根据配电分区主变容量设定下垂斜率系数,运行中动态调整各电压源变流器下垂功率参考值,实时保证互联的各个配电分区运行在相同的负载率水平。在PSCAD中搭建交直流配电系统电磁暂态仿真模型进行仿真分析,验证了所提方法的有效性。
Active power exchange between different AC zones can be controlled precisely by VSC power controlling. A droop control strategy was proposed which could achieve balanced load ratio between connected AC distribution zones. Firstly droop gradient was calculated according to transformer capacity of different AC zones. And then power reference of droop control was dynamically adjusted during operation of each voltage source converter. Load ration of different AC zones could be balanced in real time by this method. The electromagnetic transient simulation method of AC/DC distributon system was built in PSCAD for simulation analysis, which verify the effectiveness of the proposed methed.
作者
曾杰
张弛
袁志昌
曾嵘
余占清
姚大伟
赵伟
钟国彬
胡伊凡
ZENG Jie;ZHANG Chi;YUAN Zhichang;ZENG Rong;YU Zhanqing;YAO Dawei;ZHAO Wei;ZHONG Guobin;HU Yifan(Electric Power Research Institute of Guangdong Power Grid Co.,Ltd.,Guangzhou 510080,Guangdong,China;Energy Internet Research Institute,Tsinghua University,Beijing 100084,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China)
出处
《电气传动》
北大核心
2019年第9期46-51,共6页
Electric Drive
基金
广东电网有限责任公司科技项目资助(GDKJXM00000038)
关键词
直流配电网
电压源变流器
交流配电分区
下垂控制
负载率均衡
DC distribution grid
voltage source converter(VSC)
AC distribution zone
droop control
balanced load ratio
