Implementation method of operation interface of automatic plant start-up &and shut-down system

Abstract

The invention discloses an implementation method of an operation interface of an automatic plant start-up &and shut-down system in a thermal power plant. Due to the common logic, control breakpoint and step sequence logic of the automatic plant start-up &and shut-down system provided by the method as well as the operation interface of the automatic plant start-up &and shut-down system and a modulating control system, the man-machine interactive design of the automatic plant start-up &and shut-down system is simplified, and the applicability of the automatic plant start-up &and shut-down system is improved. In addition, optimal control of a control outputting setting value of the modulating control system can be realized by adopting multiple goal constraint.

Description

technical field [0001] The invention relates to a design method of a thermal control system, in particular to a method for realizing an operation interface of a thermal power plant unit unit automatic start-stop control system. Background technique [0002] The Automatic Plant Start-up&Shut-down System (APS for short) of thermal power plant units is the highest level of control function in the unit automatic control system. In the 1980s and 1990s, some thermal power generating sets imported from Japan were designed with APS function. Due to the differences and constraints of many factors such as the domestic power plant infrastructure commissioning cycle, unit operation management mode, main and auxiliary machine controllability and reliability, and the overall automation level of the unit, this function has not yet been able to be used in large-scale thermal power generation in China. It has been popularized and applied in the unit. [0003] With the continuous improvemen...

AI Technical Summary

Problems solved by technology

On the one hand, some APS systems that have been put into operation in China mostly choose to use special algorithm modules in the DCS system in terms of configuration and implementation methods [3] To build, the APS function design must adapt to the existing functions of these algorithms, and the logic applicability is poor

On the other hand, the design of a certain foreign manufacturer is mechanically copied, and the design of the APS operation interface is also unreasonable. There are as many as 100 new operation buttons in the APS of a domestic 1000MW ultra-supercritical unit, and the settings are complicated.

Power plant operators are often at a loss for such a redundant APS operation interface, which is one of the reasons why the APS function design intention and actual operation effect are quite different

During the actual start-up and shutdown of the unit, it is still difficult to meet the automatic conditions for many analog control loops. Therefore, in the APS design of the domestic complete set of imported units in the 1980s, the method of allowing the automatic conditions to ignore "BYPASS" was adopted. In this way, in the actual operation In operation, the frequency of operator intervention is greatly increased; reference [7] provides an improved method of bootstrap automatic switching on the basis of this method; reference [3] designs an automatic backup method to To reduce operator intervention

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