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

A coordinated control and county-level technology, applied in the direction of AC network voltage adjustment, electrical components, information technology support systems, etc., can solve the problems of control command lag, inaccurate fault judgment, lack of coordinated control means, etc., to prevent imbalance, The effect of ensuring accuracy and ensuring safety and reliability

Active Publication Date: 2016-04-20
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +2
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  • Abstract
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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...

Method used

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

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Experimental program
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Embodiment Construction

[0028] Such as figure 1 As shown, the coordinated control method of AVC joint operation in the districts and counties includes the following steps:

[0029] S1. Start: start the coordinated control method for the AVC joint operation of the prefectures and counties.

[0030] S2, AVC main station and sub-station establish real-time database and communication equipment

[0031] Real-time databases that can store a large amount of structured and unstructured data are established in the AVC main station and sub-stations in the prefectures and counties. Structured data includes telemetry and remote signaling, protection information, AVC real-time control strategy (action sequence), control model data, AVC blocking items, communication status, etc. obtained from the SCADA system; unstructured data includes connection methods and adjustments of plant equipment. Tasks, external factors that affect AVC regulation, etc.

[0032] The AVC substation real-time database uploads the follow...

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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...

Claims

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Application Information

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IPC IPC(8): H02J3/16H02J13/00
CPCH02J13/0006H02J3/16Y02E40/30Y02E60/00Y04S10/16
Inventor 张锋明李孝蕾张心心杨才明沈祥金乃正章立宗沈雅琴吴凌燕谢栋孙滢涛叶淑英任明辉李康毅金红华
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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