Overall structure of thermal automation system of thermal power plant

Abstract

The invention discloses an overall structure of a thermal automation system of a thermal power plant, composed of four parts as follows: measurement communication, protection, process control and supervision optimization, wherein the measurement communication consists of a field sensor, a transmitter, an actuator, and a communication network; the communication network includes protection, control,supervision, and a common bus; the protection includes equipment protection and protection management; the process control includes a two-level mode consisting of a function coordination level and adrive execution level; the function coordination level includes performing start-stop and non-start-stop control, accepting an optimized instruction set, an external instruction set, a direct feed-forward instruction set, a real-time measurement data set, and an internal state instruction set as input signals, and establishing a parallel control system that simultaneously faces the entire power generation production process; and the supervision optimization realizes the online monitoring for the integrated data platform and thermal process optimization and equipment in the operational controlzone. The overall structure of a thermal automation system of a thermal power plant respectively provides an implementation manner of a capital construction and a production plant, which provides a reference for the construction of a smart power plant.

Description

technical field [0001] The invention relates to an overall structure of a thermal automation system of a thermal power plant, which belongs to the system structure of a process control system in the field of industrial control. Background technique [0002] In recent years, with the continuous development of technologies and concepts such as "Made in China 2025", "Internet +", and "Industry 4.0", thermal power plants have gradually carried out the construction of intelligent power generation and smart power plants. The foundation supporting the entire intelligent power generation construction has attracted more and more people's attention, such as the Chinese patent application number 201210007231.6. At present, the main work of thermal automation system in thermal power plants includes: integrated DCS construction integrating DEH, ECS, auxiliary control, etc., research and development and application of integrated intelligent control platform integrating various external op...

AI Technical Summary

Problems solved by technology

However, in reality, APS is restricted by the existing architecture, uses a separate controller, mainly relies on multi-level sequence control, and ensures the smooth start and stop of the unit as the only requirement, and does not have the flexible configuration of start / stop paths and intelligent adjustment capabilities

[0006] 3) SIS expects to be able to guide the control system, but currently there are few functional applications between optimization guidance and real-time control, and at the same time, the massive operating data of the unit has not been effectively mined and utilized

[0007] 4) New detection technologies that have not yet reached the control level, such as pulverized coal concentration and velocity measurement, online measurement of fly ash carbon content, flue gas composition measurement, CO measurement, etc., are difficult to be effectively applied within the existing thermal automation framework

[0008] In recent years, intelligent power generation has proposed a thermal power intelligent power plant architecture, including four layers of intelligent equipment layer, intelligent control layer, intelligent production supervision layer and intelligent management layer, but in terms of equipment layer and control layer, only more advanced Sensing technology, more digital instruments, no design and research on the overall architecture of the thermal automation system of thermal power plants

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