At 9:25 on May 25, 2021, China's first self-controllable heavy-duty gas turbine control system (TCS) was successfully connected to the grid and put into operation at Huadian Zhejiang Longyou Power Plant, marking China Huadian's first complete mastery of the heavy-duty gas turbine control system in China The key technologies of the whole process including the independent design, production, debugging and transformation of the company have promoted the development of the localization of gas turbines in China.

Heavy-duty gas turbines are known as the "jewel in the crown" of the equipment manufacturing industry, reflecting the industrial level of a country, and the TCS system, as the core control system, determines the performance and safety of gas turbines. For a long time, related core work such as the design, configuration, and debugging of the TCS system has been provided by the original foreign gas turbine manufacturers, and the phenomenon of "stuck necks" in the field of gas power generation is prominent. China Huadian uses the power of the entire company to organize Guodian Nanzi and Huadian Electric Power Research Institute to carry out independent and controllable TCS research on the protection principles, control strategies, functional algorithms, control system software and hardware design, and network-related safe operation of heavy-duty gas generators. Conducted in-depth research and successfully broke through the key technologies of E-class heavy-duty gas turbine body control principle research and logic design, combustion pressure pulsation monitoring and combustion adjustment, grid-related precision control, simulation modeling and other key technologies, and successfully developed an independent controllable TCS system. The debugging and operation adjustment of the gas turbine body were carried out, and a number of technologies filled the domestic gaps.

Independent research and development

This set of TCS system inherits the "Huadian Ruilan" DCS independent controllable and intrinsically safe characteristics in terms of software and hardware platforms. The controller performance, valve control card operation speed, SOE accuracy, speed control deviation and other important indicators are better than similar foreign products , And according to the operating characteristics and key features of gas turbine units, the servo control and wet contact input SOE cards suitable for gas turbine fuel valve, speed ratio valve, IGV and other key equipment are designed to form a complete set of gas turbine control and protection technology. As a whole, it has reached and partially exceeded the technical level of similar foreign products, and has the ability to implement full-function and comprehensive localization of the control system of heavy-duty gas-fired units.

Keywords: construction machinery, construction, emerging technology

As a super large state-owned backbone enterprise directly under the State-owned Assets Supervision and Administration Commission of the State Council, China Huadian consciously becomes the main force and vanguard of technological innovation, strives to create original technology sources, strives to be the chain length of modern industry chain, and is the first to build domestic coverage of thermal power, hydropower, wind power, and power grids. The "Rui" series of electric power independent controllable industrial control product series promoted the mature application of China Electric Power Industrial Control System to achieve independent controllability. The successful commissioning of the self-controllable TCS system of Huadian Zhejiang Longyou Power Plant this time has opened a new window for a series of independent innovations such as diagnosis, operation and maintenance, testing and testing, and replacement of thermal components for China's heavy-duty gas turbines. The process of localization has provided favorable conditions and will give full play to the flexible power generation characteristics of gas-fired units to help China achieve its "dual carbon" goal as soon as possible. Editor/XuNing