Research on Optimization Model of Voltage Quality Improvement Project in Medium and Low Voltage Distribution Network

Voltage is an important indicator of power quality. Voltage quality can not only effectively ensure the production sustainability and product quality of users, but also have an important impact on the safety and durability of electrical equipment. The construction project of distribution network adopts the way of determining the fund first and then the project. Therefore, there is an urgent need for a set of applicable models to evaluate the feasibility of investment and the rationality of investment income. By analyzing the causes of low voltage quality, combined with the progress of power grid construction and power grid planning projects, this paper puts forward the strategies to improve voltage quality by applying new technologies such as safety, maturity, economy, applicability and green environmental protection. In order to improve the voltage quality of medium and low voltage distribution network, the optimization model of voltage quality improvement projects of medium and low voltage distribution network is studied and formed. The model is used to rank the planning projects in a certain area, and the ranking results meet the proposed planning objectives. Then, the rationality and accuracy of the model are verified according to a number of implemented projects.