Specific applications of DCS in power plants
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I would like to ask what components are included in the DCS system of a newly built power plant? Specifically, does something like a turbine monitoring system count as a DCS? Does the boiler safety system, FSSS, count as a DCS system? Is DCS just a general term? What is usually installed in a DCS? And how to debug it? Are there dedicated personnel for debugging? How long does debugging take approximately? There are quite a few questions, but they’re all similar. Please answer as many as you can; thank you!
The power plant control systems here use Siemens PCS7. As for the other issues mentioned by LZ, they can be found easily with a search; once the DCS brand and specific model are known, the rest are more or less similar.
DCS stands for Distributed Control System, and it can be used to monitor and control parameters such as temperature, pressure, liquid level, and valve operations on site; it certainly includes the steam turbines and boilers you mentioned as well
Systems for testing steam turbines such as TSI and FSSS, as well as systems for testing boilers, including ETS, ECS, and DEH, can all be integrated into the same DCS system. This unified approach facilitates program configuration, as well as screen display and control, all of which can be carried out from a single HMI operation station； It also facilitates daily system maintenance ； Furthermore, there are also fewer spare parts available for cards in the same system, which reduces spare parts inventory.
It includes functions such as the data acquisition system (DAS) for boilers and turbines, the analog control system (MCS), the sequential control system (SCS), the furnace safety monitoring system (FSSS) for boilers, the turbine bypass control system (BPC), and the electrical control system (ECS). It also communicates and exchanges data with a large number of other systems in the power plant, such as the turbine digital electro-hydraulic control system (DEH), the feedwater pump and turbine digital electro-hydraulic control system (MEH), the boiler soot-blowing control system, the furnace tube leakage detection system, the boiler IDAS, the turbine IDAS, the flue gas monitoring system, the 380V electrical monitoring system, and the 6KV electrical monitoring system. These subsystems are used to enable monitoring of the entire plant’s operations through the DCS system.