Abstract:

Based on twogenerator parallelrunning redundant uninterrupted power supply (UPS)structure applied in large thermal power plant is more, higher reliability. Due to the feature of its output in parallel, when the fault after the machine maintenance and recovery, adopt different ways of operation on the quality of the UPS power bus. In a power plant in weaver UPS bus power fluctuations in the process of operation caused by the air preheater, tripping events through PMDR200 portable failure data recorder for a variety of weaver has the effect of different analysis, comparison, find out the optimum operation scheme, improved the level of operational personnel.