Research on Multi-objective Optimal Dispatching and Low Voltage of Distributed Generation in Rural Distribution Network

摘要

Energy is the cornerstone and power of the development of human society, and the use of distributed generation has been continuously concerned by the whole society. In order to solve many problems, such as wind abandonment, light abandonment, voltage quality decline, etc., when distributed generation is heavily connected to Ding xi rural power grid in Gansu Province, this paper puts forward methods to promote coordinated consumption and optimal dispatch of distributed energy, and to evaluate and control rural power grid. Firstly, based on the actual situation of Ding xi rural power grid in Gansu Province, a distribution network model considering distributed generation consumption is proposed. In addition, a multi-objective optimal scheduling model of active distribution network is established with the objective function of minimum operating cost, minimum power reduction of distributed generation and minimum network loss. The model considers DG active and reactive power control, charging and discharging of energy storage equipment and call of interruptible load, and uses MOHS algorithm to achieve efficient solution. On this basis, the method of voltage quality evaluation and treatment based on normalized load moment is put forward. Finally, the feasibility, economy and application value of the above method are verified by Ding xi distribution network system in Gansu Province.