大型风力发电机组控制系统CPU故障可能引发“叶轮飞车”事故的探讨

Discussion on the "Impeller Coaster" Accident Caused by the Failure of Control System CPU of Large Wind Driven Generator Unit

风力发电机组的控制系统包括主控系统、变桨控制系统和变流器三部分。控制系统与安全链系统实质为机组的神经指挥中枢与安全保障系统,正常的情况下风机启动与停止是通过控制系统实现;当遇紧急情况触发安全链动作进行紧急顺桨,上传信息至控制系统命令主轴刹车停机。风力发电系统中的控制技术和伺服传动技术是其中的关键技术。安全链的功能是在风力发电机组发生严重故障或存在潜在严重故障时将风力发电机组转换到安全状态,通常是将风力发电机组转换到刹车停机状态。

The control systems of wind turbines include three parts, that is the main control system, the variable oar control system and the converter. The control system and the safety chain system are essentially the neural command center and the security system of the unit. Under normal circumstances, the fan start and stop are realized through the control system, when the emergency chain triggers the safety chain action to carry out the emergency feathers, upload the information to the control system command the spindle brake to stop. Control technology and servo drive technology in wind power systems are key technologies. The function of the safety chain is to switch the wind turbine to a safe state in the event of a serious failure of the wind turbine or the presence of a potentially serious fault, which normally switches the wind turbine to the brake stop.