| With China’s electric power system development and the increasingly expanding,power system stability problem has become the most important problem, is becomingmore and more serious. To solve the real time power system security analysis and thesecurity and stability control technology research and application, has become thepower production, operation, scientific research and manufacturing department’simportant task. Power system transient stability analysis of power system securityanalysis as the important content, the term applied to the calculation and analysis, tomake operation limit, analysis system in extreme conditions and control measuresplayed an irreplaceable role. At present, EMS energy management system in the field ofapplication of mature, and in recent years the GPS based on phasor measurement unit(PMU) of the wide-area measurement system (WAMS) development, for power systemreal time data collection has laid a strong foundation, but also for the transient stabilityanalysis of online provides reliable data source. In order to improve the timeliness,presented online participation in the whole network transient stability calculation, andusing a mathematical algorithm, decision power system stability, and then through thesystem to send out alarm and control information to remind the actual production work.In this paper, the design of power system transient stability analysis on linesystem with current power network automation system matching, the system to theexisting iES600Pro power grid dispatching automation system (hereinafter referred toas iES600Pro system) as the basis, to obtain the real-time power flow data, the electricalequipment operating parameters, and the isolation device is obtained after the transientstability analysis of the data source. The flow calculation of transient stability afterjudgment, decision power system stability, and through the system to send out alarmand control strategy of the reverse isolation device after the return of the actual system,to remind the production practical work so as to realize the transient stability analysis ofpower system on-line mode. Transient stability analysis of power system on-line designis completely according to the grid operation condition and fault information of theactual system, can be more effective to guide the practical operation of power grids, and can forecast accident in power grid fault condition to create the best accident processingstage, improve power supply reliability. |
