Application Of PCS-9400 Excitation Control System In TKJ91-35 Exciter

Important part of the control and regulation of synchronous generator excitation control system is the system. Largely run state regulation characteristics of the generator excitation controller related. Whether the unit is running at steady-state or transient,excellent performance of the excitation regulator control system can not only ensure the stability and reliability of the generator is running, but also can improve the technical and economic generator and its associated power system connected indexThe opening section of this article describes a variety of three-phase AC exciter excitation mode, self-shunt excitation control principles, advantages and disadvantages,rotating diodes and encourage more of the following forms of self brushless excitation mode, rotating rectifier diode fault detection. Elaborated for the power plant in Inner Mongolia Dalat # 2 turbine control system runs the original Alstom excitation Problems necessity and equipment modification, introduces the basic requirements of excitation system, discusses the main device used in this transformation basic case logic implementation design principles, rotating several of the diode fault detection methods.Mainly for the rotating diode fault detection made a detailed theoretical explanation.Equipment renovation work in addition to the use of retention of excitation transformer, off magnetoresistance outside the cabinet, to rectification control cabinet, excitation regulator controller, three-phase AC line power supply cabinet and other equipment and control circuit are performed equipment modification.After technological transformation of equipment, excitation control system # 2generating units to fully digital microprocessor control IC type of alternative control system, solve the aging of components, spare parts can not be bought, and poor regulation performance, while increasing before PSS imperfect function, communication function, the protection function. For the power plant unit and the safe and stable operation of the grid to provide a strong guarantee.