The effect of reactive power to the economic operation of the power grid is analyzed starling from analysis on the operation status of Shihezi power network and its changing law of the line loss.

• 从石河子电网(文中简称石网)无功电压的运行现状及线损率的变化规律出发,分析了无功电压对电网经济运行的影响,并从技术、经济、管理三方面提出如何加强无功电压管理、降低电网线路损耗的建议。