基于同步相量测量的电力系统等值及电压稳定评估

提出了一种基于同步相量测量的电力系统等值方法。该方法只需利用同步相量测量，即被监测负荷节点同步电压相量和电流相量，将系统等值成两节点系统。在此基础上以负荷阻抗模与系统等值阻抗模的差值和负荷阻抗模相比，作为判断电压稳定与否的指标，并且推导了在负荷模型为阻抗模型和功率模型时，该指标的正确性。采用EPRI-36节点系统进行仿真，验证了方法的正确性及合理性。

Power System Equivalent and Voltage Stability Evaluation Based on Synchronized Phasor Measurement

This paper puts forward a kind of power system equivalent method based on synchronized phasor measurement.The method makes the system become equivalent to two node systems only through synchronized phasor measurement,the monitored synchronized voltage phasor and current phasor of load node.Then it compares the difference of load impedance module and system equivalence impedance module to load impedance module as the standard whether voltage stabilize.This text deduces the accuracy of the standard while load models are impedance model and power model.Simulation with EPRI-36 node system verifies the accuracy and rationality.