A Method for Improving Voltage Quality and Reducing Substation Construction Costs in Transmission Networks Through Transmission Line Renovation

With the widespread expansion of the China's electrical power system, electricity supply and usage are becoming increasingly prevalent in remote mountainous and rural areas. However, the transmission costs in these remote regions are prohibitively high. Constructing substations in such areas would result in a substantial increase in construction and maintenance costs, as well as a significant rise in electrical energy losses. Consequently, there is an urgent need for a solution that can ensure remote electricity transmission while also saving on substation construction costs. In North America distribution networks, power voltage regulators are frequently employed to effectively regulate the distribution of reactive power, thereby enhancing the electricity transmission conditions. In this paper, a similarity model is utilized to experiment with this approach in transmission networks. A comparative analysis is conducted between this method and the traditional substation regulation approach to assess its cost-effectiveness relative to conventional substation network construction.