摘要
微网系统大功率电力负荷的投切会导致电网电压和频率波动。针对此问题,分析了微网系统的电网特性,提出一种微网中储能系统功率控制策略。该策略利用微网频率和电压的下垂特性,通过有功无功输出功率调节得以实现。利用动模实验室模拟微网环境进行了微网系统运行实验,验证了所提出功率控制策略在平抑电网电压和频率波动方面有良好的效果。
For a microgrid,its voltage and frequency may be fluctuating due to switching of a heavy power load.Aiming at the problem,and analyzing the characteristics of the microgrid,this paper proposes a power control strategy of the energy storage system in the microgrid,which is based on the droop characteristic of voltage and frequency,and is realized through the regulation of active and reactive powers.An operation test of microgrid is done under the condition of simulating the microgrid in a dynamic simulation laboratory,showing that the power control strategy works well as to stablize the voltage and frequency of the microgrid.
出处
《南方电网技术》
2012年第3期57-61,共5页
Southern Power System Technology
基金
南方电网"智能电网关键技术研究"重大科技专项(K201029.9)~~
关键词
微网
下垂特性
储能系统
有功功率
无功功率
功率控制
电力负荷
microgrid
droop characteristic
energy storage system
active power
reactive power
power control
electric load
