风柴蓄组合发电系统容量的优化配置方法

An Optimal Sizing Method for Wind-diesel-battery Hybrid Power System

针对风柴蓄组合发电系统,提出一种容量优化配置方法,考虑独立和并网两种模式,对风力发电、柴油机发电和蓄电池的容量进行最优配置。该方法充分利用风柴互补特性,在系统独立运行时,只需较小的蓄电池容量即可保证高供电可靠性,并可减少蓄电池的充放电次数和放电深度;在系统并网运行时,进一步提出采用分时段优化策略来配置所需蓄电池的容量,保证负荷供电需求和入网功率的波动特性满足要求。算例验证了所提改进优化方法的合理性和优越性。

Considering the system working in both stand-alone and gird-connected modes,an optimal sizing method for hybrid wind-diesel-battery power system is proposed,which takes full advantage of the complementary characteristics of wind and diesel and achieves a high power supply reliability while require less battery capacity in stand-alone mode.Moreover,the depth of discharge and charge/discharge cycles of the battery is reduced.And the sub-period optimization strategy is further utilized to calculate the optimal battery capacity,which could ensure both the load demand and fluctuation of power injected into the grid to meet the requirements in grid-connected mode.A case study is presented to verify the advantages of the optimal sizing method.