特高压交流电网的无功电压控制

特高压交流电网是长距离大范围平衡能源供需、建设坚强智能电网和全球能源互联网的关键。特高压交流电网正在稳步发展中,无功电压控制是保证特高压交流电网安全可靠经济运行的重要手段。文中总结了特高压交流线路的无功、电压特性,指出了特高压交流电网在无功电压控制方面存在的困难;从独立控制、与近区电网协调控制、大电网全局优化三个方面综述了特高压交流电网的无功电压控制方法。最后,结合特高压电网的无功电压控制现状分析和发展趋势,指出了特高压交流电网在无功电压控制研究中的几个发展方向。

Reactive Power and Voltage Control in UHVAC Power Grid

Ultra-high voltage alternating current(UHVAC)network is the key to balance the supply and demand of energy, as well as building strong smart grid and Energy Internet. UHVAC networks are under developing with a steady pace. Reactive power and voltage control is an important measure to ensure the security, reliability and economy of UHVAC networks. The reactive power and voltage characteristics of UHVAC transmission lines are summarized, and the problems of reactive power and voltage control in UHVAC networks are indicated. The reactive power and voltage control methods are reviewed including independent control, coordinated control with neighboring grids and global reactive power optimization of large power grids. At last, some future directions in the field of reactive power and voltage control in UHVAC networks are pointed out, according to the analysis of the current research status and the development trend of ultra-high voltage networks.