Calculation and Simulation Analysis of Bus Voltage Drop when Large Capacity Motor Starts at Launch Site
In this paper,the fault problem of an automatic transfer switching equipment(ATSE)de-vice controlling the floor cabinet in the course of a mission at the space launch site is studied.Com-bining the field phenomenon and the monitoring data,the fault cause is located in the large-capacity motor start-up caused by the upper end of the bus voltage reduction.Based on the principle of im-pedance voltage division,the bus voltage drop when the fault occurs is analyzed and calculated theo-retically,and the calculated results are in agreement with the ATSE operating threshold.The ETAP software is used to simulate the bus voltage drop when the motor starts,and the analysis results are basically consistent with the theoretical calculation results.Finally,by adjusting the starting se-quence of the equipment,the ATSE action threshold is reset,so that the lower limit of the ATSE ac-tion threshold could exceed the lower limit of the bus voltage when the large-capacity motor starts,the motor can start normally,and the impact on other loads is reduced.
low voltage networkmotor startingbus voltageimpedance partial voltage
万方数据
维普
