中文摘要：

在有功调度方式给定的前提下用最少变量组建立无功优化模型,用非线性原-对偶内点法求解该模型.根据求解规律和无功优化的特点,在由K-K-T条件构成的非线性方程组的求解过程中,构建由电力系统状态变量和等式约束对应的乘子组成的线性结构,该结构类似牛顿法极坐标形式的潮流计算格式,间接地将不等式约束转化到等式约束中,对求解问题的规模及实时性有良好的适应能力.算例结果证明了该方法的有效性.

英文摘要：

Under a certain given active power dispatching mode, an optimization model of reactive power is built by least variables and solved by nonlinear primal-dual interior point method. According to the solution principles and the features of reactive power optimization, during the solution of nonlinear equations constituted by Karush-Kuhn-Tucker （K-K-T） condition a linear structure composed of multipliers only corresponding to both power system state variables and equality constraints is constructed. This structure is similar to calculation pattern of power flow by Newton method in polar coordinates, in which the inequality constraints are indirectly transformed into equality constraints, so this structure possesses good adaptive capacity for the scale of the question to be solved and real-time performance. Case study results show that this method is effective.