A reconfigurable AC excitation control system for impulse hydroelectric generating unit based on fault-tolerance

Aiming at the AC excitation control of high-head impulse hydroelectric generating unit, and in order to improve system reliability, a reconfigurable AC excitation control system for impulse hydroelectric generating unit based on fault-tolerance control is introduced. The reconfigurable scheme and structure of hardware system for AC excitation system is proposed. On the basis of the analysis of main system faults, an intelligent control strategy is proposed, with the construction of reconfigurable software modules, including basic structure of software platform, reconfiguration of detecting algorithm, and reconfiguration of control algorithm for digital valves. The experimental results show that the reconfigurable AC excitation control system can realize intelligent diagnosis of system fault, reconfiguration of system structure, and active fault-tolerance control, with the improvement of system reliability.