Intelligent Control Strategy and Proposed Motor Drive Operating Mechanism for High Voltage Disconnecting Switch
Aimin Liu1,2, Jinhua Zhang1,2, Zhiheng Wu1,2
COMPUTER MODELLING & NEW TECHNOLOGIES 2013 17(5D) 36-41
1 School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China;
2 Liaoning Province Key Lab of Power Grid Safe Operation and Monitoring, Shenyang 110870, China
A new type of operating system (motor drive) is introduced to remedy the following typical shortcomings shared by high-voltage Disconnecting Switch (“DS”) operating mechanisms in this paper: 1) poor controllability, 2) failure to meet requirements of opening and closing speeds, and 3) closing bounce. The current and speed dual-loop control method was used in the DS operating mechanism control system. Due to the motor operating mechanism control system’s nonlinearity, the control error is large when the conventional double-loop PID control system was used. The fuzzy control algorithm combined with the PID controller can adjust the control parameters online and enhance its control capability of nonlinear control system – thereby reducing control error. Experiment results show that combined with fuzzy control algorithm of motor operating mechanism, intelligent control system can make real-time adjust the speed of switch contact to ensure the motion of stability and meet opening and closing speed requirements.