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Application of Reliability Digital Analysis in Wind Turbine Control System Hui Dengying 2, Wu Bo 3 (1. Liaoning Petrochemical Vocational and Technical College, Jinzhou 121001, China; 2. Shenyang Industrial University, Shenyang 110023, China; 3. Shenyang Institute of Chemical Technology , Shenyang 110142) calculation formula and calculation method, combined with the actual wind turbine control system for reliability calculation analysis, and give the reliability design principle of the wind turbine control system.
2: The safety and reliability of the electric control system of the wind turbine has become a major issue for the wind power system to play a role, and even become a safe and reliable operation of the wind farm. In the actual application process, especially in the general wind power control and detection system, it is not difficult for the electronic control system to meet the functional requirements put forward by the user. It is often not the function of an electronic control system but its reliability directly affects the performance of the wind turbine. In order to ensure the reliable operation of the wind turbine and improve the reliability of the electronic control system, we must first understand the safety and reliability of the system, perform reliability analysis on each link, and then design the control system based on the analysis results, and propose the safety of the wind turbine electrical control system. The reliability design principle makes the control system more perfect and more suitable for the safe operation of the wind turbine.
1 System reliability basic definition 1.1 Safety and insecurity System security is reliability: refers to the ability of the designed system to complete the specified functions within the specified conditions and specified time. The system cannot perform the specified function called failure or failure. The safety and reliability of the system are generally expressed by probability. The lifetime T of the design system is a random variable. Its reliability 1.2 probability density function of the failure probability function f(t) is the derivative of unreliability, that is, its actual meaning is At any time t, the total number of components is N0, the probability of failure in the system unit time. The failure rate refers to the probability that the system has not failed in unit time at any time t, and its estimated value is recorded as Aft). Beijing: Beijing University of Aeronautics and Astronautics Press, 2001. Wang Shaoping. Engineering reliability. Beijing: Beijing University of Aeronautics and Astronautics Press, 2000. Jiang Renyan, Zuo Mingjian. Reliability model and application. Beijing: Mechanical Industry Press, 1999. Wu Jinpei, Xiao Jianhua. Intelligent fault diagnosis and expert system. Beijing: Science Press, 1997.