微电网储能系统下垂协调控制与母线电压控制策略

摘要

In view of the operation characteristics of the wind power system and photovoltaic power generation system at the Wind/PV complementary microgrid, this paper put forward a corresponding control strategy for the microgrid bus voltage on the basis of the droop coordination control strategy of combining the Battery Energy Storage System ( BESS) and the Super Capacitor Energy Storage System ( SCESS) , and optimized the reactive power control so that the load power stability of the microgrid could be further improved.The paper described the mode-switching process of the microgrid, analyzed the control strategy in theory, and verified the effectiveness and feasibility of the proposed control strategy through the PSCAD/EMTDC simulation software.%针对风光互补微电网内风力发电系统和光伏发电系统运行特性，提出采用蓄电池储能系统（ Battery Ener-gy Storage System， BESS）与超级电容储能系统（ Super Capacitor Energy Storage System， SCESS）下垂协调控制策略基础上对微电网母线电压采用对应的控制策略，进而优化无功功率控制，以此进一步提高对微电网内负荷供电的稳定性。文中对微电网模式切换过程，加以控制策略理论分析，再通过PSCAD／EMTDC仿真软件，验证文中所提出控制策略的有效性及可行性。