| The most important in norm al and stable operation of the power grid enterprise social benefits, establish online security management system for power grid, power grid to achieve the online as sessment and early warning ability, help power grid operation and maintenance personnel can have more time, attention to the healthy development of power grid.In this system, the use of.NET development platform, combined with OPEN-3000, the back-end using highly efficient and stable Oracle database as a storage sys tem, the program uses the C# language developm ent, security and stability calculation of the controlled system using transient algorit hm, under the fram ework of.NET C# c an directly generate efficient original executable code, can greatly improve the transaction rate, and to combine the.NET framework provides autom atic scheduling and W eb interface.The system consists of data a cquisition subsystem, analysis and ear ly warning system and control decision m aking subsystem is composed of four parts, of fline. Real time status inform ation of data acquisition system of acquisition and processing of power system, provide the d ata source for stability analysis and control decision subsequent; analysis and early warning syst em based on real-tim e status of potential fault comprehensive assessment and early warning; when the system is unsafe or potentially unsafe circu mstances, start prev ention and control or em ergency control strategy search module, provide suggestions to adjust operation mode of dispatchers, or through the implementation of emergency control on-line pre decision stability control system. Analysis of each poin t of the pow er flow calculation, transient stab ility, dynamic stability and voltage stability of the effect of load model on calculation results of simulation, through practical operati on, the summ ary from the frequency characteristic of load and vo ltage characteristics of the influence of load m odel on dynamic stability of interconnected power grid, summarizes the factors of instability, the controlled the overall power grid failure rate slowed down. |
