电力系统暂态电压稳定检测方法和装置

• Format: Patent
• Language: Chinese
• Published: 10.12.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

本发明涉及电力系统暂态电压稳定检测方法及装置，所述方法包括：读取综合负荷模型的离线负荷参数，其中，所述离线负荷参数包括等效电动机的转子阻抗、定子阻抗和磁励电抗以及等效静态负荷的阻抗；实时读取负荷母线处的电压以及负荷母线处的有功功率；根据所述离线负荷参数、所述负荷母线处的有功功率和所述负荷母线处的电压计算下一时刻的等效电动机转速；根据所述离线负荷参数、当前时刻的等效电动机转速和下一时刻的等效电动机转速计算等效电动机转速恢复时间；根据所述等效电动机转速恢复时间确定暂态电压稳定性参量。本发明为电力系统暂态电压稳定性分析提出量化评估指标，具有简单快速、高效等诸多优点。 The invention relates to a method and a device for detecting stability of transient voltage of an electric power system. The method comprises the following steps of reading offline load parameters of a synthetic load model, wherein the offline load parameters include rotor impedance, stator impedance and excitation reactance of an equivalent motor and impedance of an equivalent static load; reading voltage at a load bus and active power at the load bus in real time; computing rotating speed of the equivalent motor at the next moment according to the offline load parameters, the active power at the load bus and the voltage at the load bus; computing recovery time of the rotating speed of the equivalent motor according to the offlin