摘要
在微网系统中,大功率电力负荷的投切会导致电网电压幅值和频率产生波动。将储能装置应用于微网系统中,可以通过逆变控制单元,实时监控电网电压波动,即时调节配电网输送的有功、无功功率大小,从而达到平抑电网电压波动的效果。采用了电压频率环控制和有功、无功补偿控制相结合的控制算法,可以即时检测电网电压波动并进行快速补偿,具有较强的有功、无功调节能力。通过构建微网模拟环境,对比试验了不加储能装置和接入储能装置后微电网投入不同电力负荷时的电压波动情况,验证了控制策略的有效性和正确性。
In microgrid,the switching of high power electric load would lead to power grid voltage and frequently fluctuation.Energy storage devices was applied in microgrid system, the voltage fluctuation was monitored in real-time through the inverter controller unit, the active and reactive power of distri- bution network could be regulated instantly ,which could stabilize the voltage fluctuation .the control al- gorithm of voltage frequency loop and active and reactive power could detect the fluctuation in real-time and compensate instantly,which has a good avtive and reactive power regulation.Through the construc- tion of microgrid simulated environment,the voltage fluctuation in microgrid connected with varying power load of have and no energy storage device was compared ,which demonstrated the effectiveness and correctness of the proposed control strategy.
出处
《可再生能源》
CAS
北大核心
2012年第2期23-27,共5页
Renewable Energy Resources
基金
国家"863"计划项目(2011AA05A111)
关键词
微网
电力负荷
储能装置
电压频率双环控制
有功无功补偿控制
micro grid
electric load
energy storage systems
voltage dual-loop control
activeand reactive power control
