Nuclear Power Plant Emergency Diesel Generator Electricity Operation Key Problems Research

With the rapid development of China's nuclear power industry, one of the most critical problems in nuclear power plant - emergency diesel generator power quality has become increasingly important and urgent.This article supplies the main measures from emergency diesel generator electrical operation key problems aspects of analysis and reasoning to improve the power quality of emergency diesel generator. At first, this paper briefly describes the emergency diesel generator the basic requirements of power quality ; then give some instances to the general relay protection settings of the nuclear power plant emergency diesel generator, and summarize, and analysis the relay trip settings in emergency conditions, priority would be low-voltage protection; then more detailed introduce the diesel generator excitation system, and suggest select microprocessor-based excitation regulator, and the use of more mature of the three machines with permanent magnet brushless machine system later; Finally, Combinations of all the load requirements of the acceptable voltage drop ,its proposed measures can be taken 6kV motor starting time stagger, appropriate adjustments to start the order, a reasonable choice of the capacity of diesel engine and generator and so on.With the improvement of these measures, it can provide nuclear power plant emergency diesel generator in emergency condition for Step-up loading higher power quality, but also provide technical specifications for reference to following imports of the emergency diesel generators.