Control method and logical structure of intelligent grid AVC substation system interface

Abstract

The invention relates to a control method and a logical structure of an intelligent grid AVC substation system interface. The method is characterizing by comprises a step of connecting an intelligentgrid AVC substation system through a networked control system NCS of a power plant to deliver an analog quantity control signal, and achieving the communication between the intelligent grid AVC substation system and a main station through a power plant remote monitoring terminal RTU so as to fully use original equipment of the power plant, a step of inputting a magnetization or demagnetization command of a gas-steam combined unit into the intelligent grid AVC substation system through a distributed control system DCS and delivering the command to an excitation regulator of the gas-steam combined unit, a step of achieving a remote switch-on and switch-off control and magnetization or demagnetization logic locking in the distributed control system DCS, and a step of sending operating parameters and an alarm signal to the distributed control system DCS and setting a monitoring screen on a display CRT of the distributed control system DCS. The invention has outstanding substantive featuresand remarkable technological progress such as simple structure, low cost, good compatibility, and high safety and stability.

Description

technical field [0001] The invention relates to a control method and a logic structure of a smart grid AVC substation system interface, and is particularly suitable for controlling the system interface of a 9F gas-steam combined unit smart grid AVC substation. It belongs to the technical field of power generation industry and auxiliary equipment. Background technique [0002] AVC is commonly known as smart grid. At present, there are many ways to realize the AVC substation of the power plant smart grid in China. One is to use an independent smart grid AVC control system to realize it, the other is to realize it in the remote monitoring terminal RTU of the power plant, and the third is to implement it in the distributed control system DCS of the power plant. Or realized in the networked control system NCS, etc. Although these realization methods have their own characteristics, they have been applied in engineering and also play an important role in power plant voltage regula...

AI Technical Summary

Problems solved by technology

[0003] One of the purposes of the present invention is to provide a smart grid AVC substation control system in the prior art to solve the problems of high cost, complex wiring, large or difficult circuit changes, easy influence on the original control program or poor compatibility, etc. A control method for a smart grid AVC substation system interface, which has outstanding substantive features such as simple structure, low cost, good compatibility, safety and stability, and significant technical progress

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