微电网不可再生分布式发电备用的优化配置

Optimal Configuration of Non-Renewable Distributed Generation Reserve in Microgrid

为提高微电网不可再生分布式发电备用(non-renewable distributed generation reserve,简称NDGR)配置的经济性,将大电网事故支持备用、NDGR、储能以及低电价与高赔偿2种可中断负荷视为微电网备用,充分利用微电网各类备用之间的经济互补特性,从协调优化与风险管理角度建立优化NDGR配置的数学模型,在基于数值灵敏度技术的寻优算法对模型进行求解的基础上,针对单一容量事故场景与容量事故集对NDGR配置进行优化。仿真结果表明,NDGR配置过高或过低都不合适,而应存在最优值。

The reserve capacities in microgrid can range from reserve capacity of power grid collapse support, non-renewable distributed generation reserve （NDGR）, energy storage devices, to two sorts of interruptible loads, i. e. , the low price load and high indemnity load. Math model for optimizing NDGR configuration is proposed by using their mutual properties in economy in order to improve the economy of NDGR configuration in microgrid. Optimization algorithm is approved based on sensitivity technology in order to quicken the velocity of optimization. NDGR configuration is optimized for the individual capacity fault and various capacity faults. Simulation results are presented to validate that an optimal value for NDGR configuration should exist.