Automatic voltage control substation system of distributed power station based on devices

Abstract

The invention discloses an automatic voltage control substation system of a distributed power station based on devices, which is suitable for automatic voltage control of a power system in the power station. The substation system comprises an automatic voltage control (AVC) workstation, a coordination control device and a plurality of execution control devices. For the convenience of on-site monitoring, a tablet computer is configured as an on-site operating panel. The invention fully meets the requirement of automatic voltage control of a high voltage bus bar in the power station, and has the characteristics of high universality, high reliability and high control accuracy. The invention realizes a high voltage bus bar voltage control function of the AVC substation in the power station, is suitable for the fields of thermal power, hydroelectric power, nuclear power and wind power, and supports a communication mode and a direct acquisition mode for acquiring real-time data required. In terms of hardware, the invention adopts industrial embedded devices and the design of power supply redundancy, controller redundancy and dual network redundancy, and in terms of software control algorithms, the invention considers various security constraint conditions and improves the reliability and anti-interference function of the system.

Description

technical field [0001] The invention belongs to the technical field of industrial control, and in particular relates to a realization scheme of an automatic voltage control (AVC) substation of a power plant. Background technique [0002] With the continuous development of the scale of the power system, the power grid has higher and higher requirements for power quality, and the dispatch center has become more and more strict in the assessment of the grid voltage qualification rate, and the role of the power plant automatic voltage control (AVC) system in the power plant is becoming more and more important. As the size increases, the requirements for its adjustment accuracy, adjustment time, stability, and reliability are also getting higher and higher. [0003] The upper computer of the existing AVC substation products in the market is realized by the industrial computer, compared with the industrial embedded device based on the real-time embedded operating system to realize...

AI Technical Summary

Problems solved by technology

[0004] The existing AVC substation products in the market do not take into account the redundancy of the lower computer, and do not adopt dual redundancy configurations for important links, such as power supply redundancy, controller redundancy, and dual network redundancy design. The problem of low reliability;

[0005] The existing AVC substation products in the market generally use serial port communication between the upper computer and the lower computer, which is difficult to guarantee the real-time and reliability of data transmission;

[0006] Existing AVC substation products lack good simulation debugging methods, and there is a problem that offline closed-loop testing of AVC devices cannot be performed;

[0007] The existing AVC substation products have limited HMI functions, limited functions in real-time curves, historical curves, event records, operation logs, alarm queries, automatic report generation, data statistics, and holographic storage of historical data, and lack convenient data analysis methods

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