Regional Power Grid Voltage And Reactive Power Optimization Of The Operation Control System Applied Research

At present, our country majority area electrical network uses the disperser adjustment the way implementation reactive voltage control, namely installs voltage idle work automatic control device (VQC) in the transformer substation, uses the idle work resources which in the transformer substation itself has to the transformer substation idle work to carry on the control. This control mode is take the transformer substation as a center, according to the transformer substation current running status the position which on locates in 'nine area charts' ,decided the corresponding control plan, has through the adjustment carries the regulating transformer the tapping position and throws cuts the capacitor, thus guarantees certain voltage qualified rate and the power factor. Along with the electric power dispatch automaticity unceasing enhancement, the channel reliable enhancement as well as the transformer substation equipment remote control function maturely consummated unceasingly, establishes (monitoring and data acquisition) the system overall situation reactive voltage optimizes the common control system based on dispatch automation SCADA already to become possibly.This article in analyzes and contrasts the domestic and foreign idle work optimization research situation in the foundation, the union dispatch automation SCADA system development, proposed establishment 'local electrical network voltage idle work optimization operating control system (AVC)' overall concept, with the aid of SCADA system 'four remote' function, using the computer technology and the network communication, to entire net various data and so on nodes telemetering, remote letter carries on real-time gathering and the online analysis computation, in guarantees the electrical network and under the equipment safe operation premise, take various node voltage qualified, the province net important pass power factor as the constraint condition, carries on the online voltage idle work optimization control from the entire net angle, thus realizes to the electrical network in various transformer substations has carries the modulator and the idle work canceller centralism surveillance, the common control and the centralized management, the realization idle work canceller invests reasonable and the idle work lamination balanced and the regulated voltage, realizes the host variation attachment switch adjustment number of times to be least and the capacitor throws cuts most reasonable, the voltage qualified rate is highest and the power transmission network damages rate the smallest synthesis optimization goal, finally achieves the entire net voltage idle work optimization operating control the goal. In the article unifies the tidal current computation and the sector analysis, realizes the entire net voltage idle work optimization movement and the regulating equipment movement number of times optimal fit, thus enhances the system voltage stability, reduces the net to damage with the reliable reduced equipment movement number of times. The field application indicated that, the AVC system can cause the dispatcher automated system to serve well for the electrical power system, reduces the labor intensity which the attendant dispatches artificially, was the modern electrical network security, the stable movement and the optimized control has provided the advanced technical method, had the remarkable economic efficiency and the broad market prospect.