Gas-Steam Combined cycle Unit is a hot spot in recent years, the control system of the combined cycle power plant has some inherent feature. This article proposed the control system optimization scheme for Gas-Steam Combined cycle Unit. Based on the control system configuration of one Gas-Steam Combined cycle power plant in Guangdong, this article analyzed and introduced the control system design and execution of the combined cycle power plant. It provides experience for other similar power plant. In addition, this article also analyzed the problem that maybe appear during execution, and proposed relevant solution.% 本文提出了燃气蒸汽联合循环机组全厂控制系统的优化方案，并结合广东省某燃气蒸汽联合循环机组全厂控制系统的构成情况，对燃气蒸汽联合循环机组全厂控制系统的设计和应用进行了分析和介绍，为燃气蒸汽联合循环机组全厂控制系统的优化设计及实现提供了可借鉴的经验，并对实施过程中可能遇到的问题进行了分析，提出了相应的解决办法。
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