Voltage Governance Optimization of Rural Distribution Network Considering Distributed Photovoltaic

New rural areas are faced with the rapid growth of power load and the massive access of distributed photovoltaic (PV), which makes the voltage quality problem of rural distribution network prominent. In the paper, a voltage governance optimization method is proposed to improve the voltage quality, which takes governance effectiveness, comprehensive cost, and power outage time as optimization objectives. Reducing solution scope is applied to reduce calculation time and computing resources for the optimal governance scheme. Firstly, a multi-objective optimization model is built, and the constraints on node voltage, power balance and devices are given. Then, the optimization model is solved by using the steps of cause analysis, screening measures, further limiting measures and gear ranges, and power flow calculation nested genetic algorithm. Finally, the proposed method is analyzed and compared in a application scenario of medium voltage distribution lines including small hydro-power and distributed PV. Results show that the proposed voltage governance optimization method is superior to the traditional scheme.