When DCS is applied on domestic coal-fired units, its coverage of monitoring functions is limited to four items: DAS, MCS, FSSS, and SCS. Even in the Q/DG1-K401-2004 “Distributed Control System (DCS) Technical Specifications for Thermal Power Plants” published in 2004, the main functional subsystems of DCS applications are still the above four items. “In fact, in recent years, the application of DCS has rapidly expanded. In addition to the full application of various control subsystems for a large number of high-parameter, large-capacity, and different-control coal-fired thermal power units (such as the Zhejiang Yuhuan Power Plant’s 1 million-kilowatt unit), New processes such as desulfurization systems, denitration systems, air cooling systems, and large circulating fluidized bed (CFB) boilers have been successfully applied. It can be said that as long as the process can be realized, DCS can achieve reliable control of it." The person in charge of the industry has said.
Some experts believe that with the development of automatic control technology, the degree of automation of thermal power generation systems is also getting higher and higher. Although DCS applications in thermal power systems are not early in the country, they are widely used. In the development of thermal power, with the ever-increasing demand for power resources in the society, relatively extensive power generation in the past has been impracticable, and more refined power generation is needed to achieve maximum utilization of resources. And this kind of control needs to rely on the automation technology to realize, the pure artificiality cannot achieve this kind of effect.
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