Energy power generation is a major form of modern electric power production, and the running system of thermal power plant and complex, the systems not only coordinate the operation but also have a strong ability to adapt to the change of load between the system. Therefore, the effective control of the thermal power plant operation is very necessary. At present, DCS[3] is widely used in fire motor used in thermal power plant, because DCS system can bring great effect to the safety production and economic benefit of power plant, the development trend of thermal automation system is high speed, intelligent, integration and transparency. This thesis makes a discussion about these.%活力发电是现代电力生产中的最主要的一种形式，且火力发电厂运行系统多而且复杂，各系统之间既要协调运行又要对负荷变化具有很强的适应能力。因此，有效对火力发电厂运行进行控制是非常有必要的。目前，火力发电厂所使用的火电机普遍采用的是DCS[3]，因为DCS系统能够给电厂的安全生产与经济效益方面带来很大的作用，热工自动化系统的发展趋势是高速化、智能化、一体化和透明化。本文对此展开一个论述。
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