中文摘要：

由于微网系统潮流分布具有不确定性和不对称性的特点,传统的潮流计算模型已不再适用。针对微网运行中各种随机性因素的影响,建立基于蒙特卡罗模拟的热电联供型微网三相潮流计算模型,以一个包含风、光、储、微型燃气轮机、燃料电池以及热电负荷的Benchmark微网为例,运用前推回代法求解模型,并对比分析外网和微源分别承担微网波动时各自的出力波动及系统的电压质量。算例表明,微源相比于外网承担微网的波动时,不仅提高了电压质量,同时微网实现了对内部随机性的消纳,验证了所提模型和算法的有效性。

英文摘要：

The traditional power flow calculation model is suitable for microgrid, because the power flow in a microgrid has the characteristics of uncertainty and asymmetry. In order to deal with various stochastic factors in the operation of CHP microgrid, the three-phase power flow calculation model based on Monte Carlo simulation was established. The Benchmark microgrid consisting of a wind turbine, photovoltaic cells, a storage battery, a micro turbine, a fuel cell, heating and electric loads was selected as the research object. The back/forward sweep method was chosen to solve the model. The power fluctuation and voltage quality of microgrid were comparatively analyzed for external network and microsource supporting internal fluctuation of the system respectively. Simulation results show that microgrid can not only improve voltage quality, but also eliminate internal fluctuation in the mode that microsource supports the fluctuation of the system. So the validity of the proposed model and algorithm is proved.