| Summary: | It is mainly for security level problems of important protection items of modern thermal power plant in this article, the main protection including boiler protection and turbine protection and so on, make the standard of SIL used in the control system of thermal power plant, using SIL3 safety level to improve the safety level of the thermal power plant main protection, to ensure safe and stable operation of the whole thermal power plant, at the same time use Laos HONGSA power plant 626MW sub-critical unit as an example, explain further the application of SIL3 used in DCS system and control analysis, through actual parameters of the running unit prove the safety and reliability of the method.
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