利用终端电路和PMU测量值进行电力系统潮流计算
Simplify Power Flow Calculation Using Terminal Circuit and PMU Measurements
摘要：
电力系统潮流计算方法在过去的几十年中得到了发展，主要有功率注入法和牛顿-拉夫逊法。潮流对母线电压的非线性特性要求在每次迭代中对雅可比矩阵进行重构和重构。电力网络由电阻、电抗器和电容器组成，当研究节点电压和节点电流注入时，电力网络是一个线性电路。为了充分利用线性度的优点，本文提出了利用端部电路模型和PMU电压相角测量值来简化潮流计算。当在潮流方程的右侧更新电流注入并且使用代表PV母线电压相位角的PMU电压相位角测量时，雅可比矩阵在迭代期间是恒定的。这种简化减少了计算量，提高了计算效率。在IEEE 14节点和IEEE 118节点标准系统上对所提出的方法进行了测试。结果与传统潮流计算结果进行了比较，验证了该方法的有效性.
英文摘要：
Power flow calculation methods have been developed in decades using power injections and Newton-Raphson method. The nonlinear characteristics of the power flow to the bus voltage require Jacobian matrix reformation and refactorization in each iteration. Power network is composed by resistors, reactors, and capacitors which is a linear circuit when investigating the node voltages with the node current injections. To take the advantage of the linearity, this paper proposed to use terminal circuit model and PMU voltage phase angle measurements to simplify power flow calculation. When updating current injections at the righthand side of power flow equations and using PMU voltage phase angle measurements representing PV buses voltage phase angle, the Jacobian matrix is constant during the iteration. The simplification reduces the computational efforts and improves the computation efficiency. The proposed method is tested on the IEEE 14-bus and IEEE 118-bus standard systems. The results are validated by traditional power flow solution and the computation efficiency is demonstrated.
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