An Enhanced Reactive Power Sharing and Voltage Recovering Strategy for Inverter-based Distributed Generations Connected to a Microgrid
In an islanding microgrid, it is important to share the load demand among the distributed generations (DG) properly.However, due to the mismatched feeder impedances, the traditional droop control strategy that works well in the power system will cause reactive power sharing errors.To solve this problem, an enhanced reactive power sharing and voltage recovering strategy for inverter based DG connected to the microgrid is proposed.This strategy requires the microgrid central controller to calculate the desired reactive power shared by each DG and send them with the compensation signal to the DG local controllers to trigger the compensation process.Under the proposed strategy, the reactive power can be shared in proportion to the capacity of the DGs and the distortion of the voltage is alleviated.Simulation results are obtained to verify the feasibility of the strategy.
Distributed generation Droop control Microgrid Reactive power sharing Stability Voltage regulation
Y.R.Wang J.H.Zhang D.H.Zheng D.N.Zhang
School of Electrical and Electronic Engineering, North China Electric Power University, Changping Di Goldwind and Etechwin Electric Co., Ltd, Beijing Economic-Technology Development Area, Beijing North China Power Engineering Co., Ltd of China Power Engineering Consulting Group, Xicheng District
国际会议
南京
英文
622-629
2015-09-21（万方平台首次上网日期，不代表论文的发表时间）