基于分布式发电的微电网并网运行控制策略

微电网虽然在运行控制方式上具有明显优势,但在多种电源的接入下,寻找正确的方式实现微电网的安全运行是目前急需解决的问题之一.本文分析风力发电、光伏发电、燃料电池的运行特性,通过对逆变器控制方式的灵活切换,实现分布式电源接入的有效控制;在Matlab/Simulink的仿真环境下搭建微电网以及逆变器控制模型,仿真结果验证了所提出的微电网控制策略的合理性,能够保证在不同工况下负荷的频率和电压在允许范围.

Microgrid operational control strategy under grid-connected mode

The secure and steady operation of microgrid is the key problem with the high penetration of distribution generation,although microgrid has obvious advantages in the connectional control of distribution generations.The paper analyzes the operation characteristics of different distribution generation,such as wind generation,PV and SOFC.Distribution generation connected into microgrid through the inverter with a flexible control strategy between the PQ or VF control mode.A microgrid and inverter control mode are build in the matlab/simulink,the results show that the proposed control strategy is efficient and microgrid can operate under different load level.