Research on Optimal Power Flow of Distribution Network System Based on Multiple Energy Routers
AC/DC hybrid grid is the trend of future power grid development,and energy router can play the key role of power flow control in the distribution network,realize the regulation of electric energy and improve power quality.At present,there have been many studies on the structure and control strategy of energy routers,but there are few studies on the power flow distribution and power flow optimization of AC/DC hybrid distribution networks with energy routers.In order to better play the role of energy router regulation and system operation optimization,it is necessary to study the multi-objective optimal power flow problem of AC/DC hybrid distribution network with energy router.Therefore,a multi-objective optimal power flow model of AC/DC hybrid system with energy routers is established.Taking network loss and voltage deviation as objectives,a multi-objective evolutionary algorithm is used to construct a multi-objective optimization model and solve the Pareto solution set.Then,the fuzzy membership method is used to make compromise decision on the Pareto solution set to obtain the optimal compromise solution.Through the simulation and analysis of the IEEE-69 nodes test system,the effectiveness of the constructed model is verified,and the optimal compromise solution is compared with the PSO algorithm to solve the SOPF problem of the same system.It is proved that the optimization model established can improve the overall performance of the system and optimize the operation state of the system.
Energy routerAC/DC systemmulti-objective optimal power flowmulti-objective evolutionary algorithmfuzzy membership method
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