Dynamic Characteristics of Primary Frequency Control for Pumped Storage Power Plant with Fixed and Variable Speed Units
The safe,stable and efficient combined operation of pumped storage power plant(PSPP)with fixed speed unit(FSU)and variable speed unit(VSU)is the key for the full play of technical advantages of VSU.Based on numerical simulation,the dynamic characteristics of primary frequency control(PFC)for PSPP with FSU and VSU are studied.Firstly,the simulation model of the PFC for PSPP with FSU and VSU is established.Then,the dynamic characteristics of PFC for the isolated operation of FSU or VSU are analyzed.Finally,the dynamic characteristics of PFC for the com-bined operation of FSU and VSU are analyzed.The results indicate that under the same parameters of governor and fre-quency converter of VSU,the response time becomes longer and response speed becomes faster with the increase of the amplitude of step decrease condition of frequency,while the response time becomes shorter and response speed becomes faster with the increase of the amplitude of step increase condition of frequency.Under the combined operation of FSU and VSU,the dynamic response speeds of the output and active power of FSU become faster,and the dynamic response speed of the output of VSU also becomes faster,while the dynamic response speed of the active power of VSU only has small change.
pumped storage power stationfixed speed unitvariable speed unitprimary frequency controldynamic characteristics
万方数据
维普
