The Influence of Shan-Wu HVDC System on the Operation Characteristics of Hubei Power Grid

The ±800kV Shaanxi-Wuhan HVDC system (hereinafter referred to as Shan-Wu HVDC system) with will be put into full operation in 2022. To improve the strength of the receiving-end grid and strengthen the optimal distribution of electric energy, the 1000kV Central China double-looped AC network will be put into operation simultaneously. The short-circuit current, power flow distribution, transient stability and voltage stability characteristics of Hubei power grid will be greatly affected by Shan-Wu HVDC system and the double-looped AC networks. This paper analyzes and calculates the short circuit level, power flow distribution, transient stability and voltage stability characteristics of Hubei power grid after Shan-Wu HVDC system is put into operation, and the corresponding operation management measures and optimization suggestions of power grid structure are given.