Analysis Of Damper Winding Current And Loss In The Transient Process Of Generator/Motor

Generator/motor is one of the core equipments of pumped storage power station.Its safe and stable operation is directly related to the stable operation of pumped storage power station and even connected power system.Due to the need of power grid operation,the Generator/motor needs to be converted and operated at various conditions.The transition process directly affects the safety and stability of the generating unit.Damping winding is an important structural component to maintain operation safety of Generator/motor,and its running state plays an important role in the electric condition and generator condition of Generator/motor.To explore the current and loss rule of damping winding in the transition process of Generator/motor,it is of theoretical significance and practical value to comprehensively consider the constraints of various working conditions during the design and operation of Generator/motors.First of all,based on a great deal of Generator/motor related documents and analysis,clearing the background and significance of the research,analyzing and summarizing the development of pumped storage power station status,and related research on damper winding loss and current at home and abroad are analyzed and established on the topic.Secondly,the physical model of the Generator/motor is established and the calculation formula of the damping winding loss is derived.Reveals the transition of power generation and electric motor working process,analyzes the influence of excitation change and load change of Generator/motor,and the influence of the number of permeability,the different magnetic damping winding wedge and damping winding diameter on the Generator/motor current and the damping loss.Finally,the damping loss on the Generator/motor current and constant load change of excitation current and constant excitation current load changes in the process of transition is analyzed,and the effects of the different range of transition time.The main purpose of this paper is to provide a reference for the evaluation of the damping current and the loss of the electric motor and the optimization of the structure of the electric motor.