Editorial Department of Power Generation Technology
Doi
Abstract
ObjectivesWith the access of high-penetration distributed photovoltaic to the distribution network, the problems of power back-feeding and voltage overrun become more and more serious. Therefore, an optimization scheme of electrical energy router based on improved black hole algorithm is proposed.MethodsA unified model of the high-penetration photovoltaic distribution network with multi-port electrical energy router is established by port steady state modeling of electrical energy router. The optimization objectives of voltage deviation and network loss minimization are proposed for the model. Under the simplified model of the distribution network in a certain area of Gansu province, the improved black hole optimization algorithm is used to optimize the solution, and the data of the distribution network system before and after the addition of the electrical energy router are compared and analyzed.ResultsWhen the photovoltaic output power are 0%, 50% and 100%, the voltage min/max values are improved/reduced by 10.86%, 3.16% and 9.64%, respectively. The voltage amplitude at each node is controlled within the range of 0.93-1.07 pu. The average line loss is decreased by 57.94%-81.56%.ConclusionsThe tidal optimization of the distributed photovoltaic distribution network is achieved by incorporating electrical energy router and performing the corresponding optimization strategy. The research results are of great significance to improve the penetration of distributed photovoltaic in the distribution grid
