Research On Operation Characteristics Of Pumped Storage Generator Unit

Pumped storage unit has a peak filling valley,the phase and frequency modulation and black start function,no pollution to the environment,without water restriction is indispensable for power grid security and stability of economic operation,in the modern power grid position can not be replaced.Synchronous motor operating characteristics curve including load characteristic and external characteristic,regulation characteristics,are reflected in the relationship between the excitation current and voltage,armature current and voltage,armature current and exciting current,is one of an important running curve of synchronous motor.In this paper,pumped storage power motor group as an example,firstly introduces the basic structure and classification of synchronous motor,double reaction principle of salient pole synchronous motor pumped storage conversion process,can the basic working principle of generator,electric power and the two conditions-electric mode,make the space under two conditions.Vector map,and the analytical calculation and verify the correctness of the model according to the relationship of the phasor diagram,followed by the analysis of pumped storage power generation mode and load characteristics of motor electric conditions,characteristics and adjustment characteristics,combined with salient pole synchronous generator and synchronous motor phasor diagram and the angle of the relation between the phase diagram,changes in the relationship between the load voltage and excitation current is derived,the relationship between voltage and current characteristics,adjust the characteristics of current and excitation current relationship.Combined with Zhuji pumping a grid energy storage power station actual operation parameters,using MATLAB simulation,for three kinds of operation characteristics were made under various electric condition and power characteristic curve,finally according to the pumped storage power substation operation characteristics.Analysis of power grid single-phase to ground fault occurs in the pumped storage power generator transient operating characteristics.