The Research on Voltage Regulation Methods in Central China Power Grid to Suit Large-Power Transmitted through UHV Project

Voltage and reactive power regulation capability of Central China Power Grid is researched in this paper when large-power is transmitted through UHV project which will be built in near future. At first, the basic condition of UHV and situation of voltage and reactive power when large-power is transmitted through UHV project are introduced. Then, several traditional and advanced voltage regulation methods are analyzed to solve low voltage problem of Nanyang UHV station which caused by large-power transmission. Nanyang transformer in plan is also analyzed to verify its necessity. Finally, several advices are brought forward to guarantee stability and reliability of system when UHV project is put into operation.