区域电网相量测量单元的配置方案及变电站动态电压稳定性的模拟评估

运用电力系统分析软件Power World对某区域电网的潮流进行了仿真计算，找出了该区域电网中电压稳定性较弱的节点与区域，给出了相量测量单元(phasor measurement unit，PMU)的优化配置方案。采用最小二乘辩识等值阻抗法对该区域电网的电压稳定性进行了动态模拟评估，验证了该PMU优化配置方案的正确性和可靠性，指出可以用阻抗模比指标判定节点电压的稳定情况。

PMU Configuration Scheme of Regional Power System and Simulation based Dynamic Voltage Stability Evaluation of Substations

By use of power system analysis software Power World the power flow of a certain regional power network is simulated; from this the nodes and zones with weak voltage stability are found out, and an optimal configuration scheme of phasor measurement units (PMUs) in this regional power network is proposed. By means of identifying equivalent impedances with recursive least square method, the voltage stability of this regional power network is evaluated by dynamic simulation, so the correctness and effectiveness of the proposed optimal configuration scheme of PMUs is validated. It is also pointed out that whether the nodal voltage is stable or not can be judged by the index of impedance modulus ratio.