Application of Reliability Digital Analysis in Wind Turbine Control System Hui, Deng Ying 2, Wu Bo 3 (1. Liaoning Petrochemical Institute of Technology, Jinzhou, Liaoning 121001, China; 2. Shenyang University of Technology, Shenyang 110023, Liaoning, China; 3. Shenyang Institute of Chemical Technology , Shenyang 110142, China) Calculation formulas and calculation methods, combined with the actual wind turbine control system reliability analysis and analysis, given the reliability of the wind turbine control system design principles.
2: The safety and reliability of the electric control system of the A wind turbine has become a major issue for whether the wind power system can play a role and even become a reliable and long-term operation of the wind farm. In the practical application process, especially in the general wind power generation control and detection system, it is not difficult for the electronic control system to meet the functional requirements proposed by the user. Often it is not the function of the electronic control system but its reliability that 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 degree of safety and reliability of the system, carry out 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 principle of reliability design makes the control system more perfect and more suitable for the safe operation of wind turbines.
1 Basic definition of system reliability 1.1 Safety and unsafety System safety means reliability: the ability of a designed system to perform a specified function within specified conditions and within a specified period of time. The system cannot complete the specified function called failure or failure. The safety and reliability of the system are generally represented by probabilities. The design system's lifetime T is a random variable, and its reliability is 1.2. The probability density function of the fault is the derivative of the unreliability, ie its actual meaning is At any time t, the total number of elements is N0, and the probability of a failure in the system per unit time. The failure rate refers to the probability that the system has not yet failed at any time t. The estimated value is denoted 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.
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