Coordination control method for combined operation of regional and county automatic voltage control (AVC) systems

Abstract

The invention discloses a coordination control method for the combined operation of regional and county automatic voltage control (AVC) systems. The method comprises the steps of respectively establishing real-time databases and communication channels by an AVC master station and sub-stations; automatically modeling and processing in real time by the master station; displaying dynamic partitions; establishing an abnormal event pre-plan library; synchronizing the information of the AVC master station and the sub-stations; judging the separation control between the AVC master station and the sub-stations; processing a failure, handing over the AVC supervision right and handling the failure recovery; establishing real-time databases and communication equipment in the regional AVC master station and the sub-stations so as to realize the information synchronization of the regional and county AVC systems and the timeliness of the AVC adjustment; ensuring the accuracy of an AVC control model and the intuitive convenience of the control effect through the automatic modeling technology and the dynamic partition display technology.

Description

technical field [0001] The invention relates to a coordinated control method for AVC joint operation of prefectures and counties, and belongs to the technical field of electric power system scheduling automation. Background technique [0002] Automatic voltage control (AVC) is a closed-loop integrated optimal control system for voltage and reactive power, mainly to ensure the voltage quality of the power grid and realize the safe, stable and high-quality operation of the power grid. In recent years, with the improvement of power system dispatching automation level, AVC system has been gradually applied to dispatching systems at provincial, prefectural and county levels. However, for the prefecture-county joint operation system where prefectures and counties share one set of AVC system, the center workstation of the ground survey layer and the sub-workstation of the county survey layer (centralized control station) operate relatively independently, lacking effective coordinat...

AI Technical Summary

Problems solved by technology

However, for the prefecture-county joint operation system where prefectures and counties share one set of AVC system, the center workstation of the ground survey layer and the sub-workstation of the county survey layer (centralized control station) operate relatively independently, lacking effective coordination and control means, and the AVC main station and sub-stations Real-time information cannot be shared, and control instructions are relatively lagging, which affects the accuracy and timeliness of control

[0003] In addition, in the existing technology, an AVC subsystem is established in the county survey. Through integrated technology, the AVC unified dispatching of the local survey is realized. When the communication with the county AVC sub-system fails or the local AVC main station fails, the failure cannot be accurately judged, and there is no effective transfer mechanism for AVC system monitoring rights. AVC may lose its ability to regulate the entire regional power grid, seriously threatening the regional power grid The safe operating level of the voltage

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