电力系统自动化2016，Vol.40Issue(10)：90-96,7.DOI:10.7500/AEPS20150605002
微电网中的有功功率和无功功率均分控制
Sharing Control of Active Power and Reactive Power in Microgrid
摘要
Abstract
An active power and reactive power sharing control method between distributed generators (DGs) in the unit output-power control (UPC) and feeder flow control (FFC) modes is analyzed.In the UPC mode,the output power of a DG is constantly regulated,which can follow the given value to achieve active power sharing between DGs.In the FFC mode,the active power flow on the feeder is regulated constantly,which also can follow the given value to achieve constantly exchanged power flow between the microgrid and the grid.However,affected by the line impedance and the local load,the output voltages of DGs are different,and hence the generation of the reactive power circulation.To solve this problem,this paper proposes a control strategy for suppressing the reactive power circulation.In this strategy,a voltage compensation element is injected into the droop control of reactive power and voltage,to achieve the purpose of suppressing the reactive power circulation.This method effectively eliminates the reactive circulation between inverters.Finally,the influences of different line impedance and local load on the reactive power circulation of a microgrid are analyzed,and simulations are carried out to verify the effectiveness and feasibility of the control strategy.关键词
微电网(微网)/无功环流/功率均分/馈线潮流控制/单元输出功率控制Key words
microgrid/reactive power circulation/power sharing/feeder flow control (FFC)/unit output-power control (UPC)引用本文复制引用
董杰,李领南,张纯江,郭忠南..微电网中的有功功率和无功功率均分控制[J].电力系统自动化,2016,40(10):90-96,7.基金项目
国家自然科学基金资助项目(514771487) （514771487）
河北省自然科学基金资助项目(E2013203380)。 （E2013203380）
