Study And Development Of Dynamic Test-Bed For Digital Electro-Hydraulic Control Of Nuclear Steam Turbine

Fossil fuels such as coal, oil, natural gas is one of the main current global consumption energy, however, fossil fuels belongs to the non-renewable energy, with the development of human society, it will be exhausted one day. On the other hand, fossil fuels can not only emit enormous amounts of greenhouse gases but does so with environmental pollution by the flue gas during use, which poses a great threat to the ecological environment of the earth, and affects the quality of human life. Vigorously developing renewable energy is the most effective way to protect the environment and is also the world’s common goal. Wind and solar power are renewable energy, but their instability destined not to be a large number of alternative to fossil fuels, nuclear energy is the best choice to replace fossil fuels as a clean and efficient energy. As a means of the most widely use of nuclear energy, nuclear power has already been implemented actively. However, the initial construction investment of nuclear power costs much larger than thermal power, etc. At the same time, the security of using nuclear energy in the process of power generation is also in need of urgent attention. Therefore, how to reduce the investment of nuclear power development phase and to improve the safety of the operation of nuclear power has very important significance for the healthy development of China’s nuclear power.As the main equipment to control the safe operation of the nuclear steam turbine, the control logic and algorithm of accuracy of nuclear power steam turbine control system is particularly important. But at present, most of the nuclear steam turbine control systems are introduced from abroad, and the cost is higher, so it is particularly important to know how to make the localization of nuclear power steam turbine control system. In this paper, the development of the dynamic test platform through nuclear power steam turbine unit control system has two important significance:1. to save the cost of nuclear power steam turbine control system during the development phase; 2. to provide optimization idea and direction for the algorithm and the strategy of nuclear power steam turbine control system during the development phase.This paper studied the dynamic test platform via using 1000 MW nuclear power steam turbine as the research object, to debug the nuclear power steam turbine control system was set as the main target. On the hardware design, full consideration was given to the needs of control system such as signal types, signal value and signal quantity, and the reliability of the steam turbine simulation model platform was also considered. On the software design, the dynamic mathematical model contains the nuclear reactor, the steam generator, through-flow of the steam turbine and regenerative systems were established, the hardware in loop test-bed of the nuclear power steam turbine control system was developed, and an attractive and simple human-computer interface was also designed. Finally, various tests and simulation test were carried on the hardware and software of the developed dynamic test platform.Software and hardware testing results showed that the selected hardware devices, such as acquisition card, CPU, etc, was fully competent for the current requirements of developing the dynamic test platform, at the same time it can also meet the later expansion and update of dynamic test platform. Simulation test results showed that the developed dynamic simulation model’s static results were accurate and dynamic trend was reasonable, which proves that the accuracy and feasibility of the model in this paper, it is recommended to use the model to provide laboratory dynamic test platform for nuclear power steam turbine control system during the development phase, to save the development of economic costs and time, and to provide validation and optimization for the algorithm and the strategy of nuclear power steam turbine control system.