Thermal power unit analog manual station and method

Abstract

A thermal power unit analog manual station and a method are provided. The analog manual station includes an engineer station, an operator station, a switch, a controller, an analog input module, an input terminal board, an analog output module and an output terminal board. The engineer station and the operator station are connected with the switch via Ethernet lines. The controller and the switchare connected via an Ethernet line. The analog input module and the controller are connected via a standard CAN bus. The analog output module and the controller are connected via a standard CAN bus. The input terminal board and the analog input module E are connected via a standard DB37 line. The analog output module and the output terminal board are connected via a standard DB37 line. The invention further discloses a working method of the analog manual station. The connection relations of the analog manual station are simple. The analog manual station has tracking, manual and automatic working modes, and can be flexibly switched between the working modes. The analog output AO is limited by the output change rate. The analog manual station has the function of position retention after restart, and is safe and stable.

Description

technical field [0001] The invention relates to the technical field of power plant control, in particular to a simulation manual station and method for a thermal power unit. Background technique [0002] The thermal power generation process includes a large number of analog control and regulation, such as various pressure values, temperature values, primary air volume, water flow, power generation load, etc. These analog values ​​need to be switched between manual and automatic, and support various setting interfaces in manual mode. The accuracy of analog control directly determines whether the unit can operate with high efficiency and save coal. The accuracy and real-time performance of the automatic mode are crucial to the operation control of the unit. If the operation and setting of the analog value is unreasonable, it will often lead to the shutdown of the generator set, and seriously cause equipment damage, casualties and other major safety accidents. The operation ...

AI Technical Summary

Problems solved by technology

If the operation and setting of the analog value is unreasonable, it will often lead to the shutdown of the generator set, and seriously cause equipment damage, casualties and other major safety accidents

The operation method and selection of analog value are very important. At present, many analog operation and manual automatic selection methods are not reliable, and the supported operation interface cannot meet the needs of actual unit operation, and the operation interface is complex, complicated operation steps and processes. Increases the probability of misoperation, has potential limitations, and cannot meet the needs of analog operation of thermal power units

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