Practice and Evaluation of Optimal Dynamic Characteristic Response Design Scheme in Nuclear Power Excitation System

The basic structure of excitation system in nuclear power plant and the channel configuration of excitation regulator are introduced. The basic structure of excitation control in nuclear power plant is described. This paper analyzes in detail the problem of system jump caused by the failure of the power supply circuit of the transmitter in the 6800-excitation regulating device of a nuclear power plant. Dynamic and transient stability of the power network, through the test results and practical use of the unit before and after modification, it shows that the optimization of power supply circuit is reasonable and feasible. It can make each path in the excitation regulator independent of each other. In the excitation system, when a power supply line fails, it can automatically supply power to the backup line. Therefore, the reliability of generator excitation system can be further improved to ensure the safety and stability of nuclear power plant.