Multi-Objective Feedback Nonlinear Sliding Mode Control Strategy Based Integrated Regulator for Hydropower Set With Sloping Ceiling Tailrace Tunnel

In this paper, a multi-objective feedback nonlinear sliding mode control strategy is designed to reduce the impact of disturbance on hydro-generator set in tailrace tunnel with sloping ceiling, aiming at ensuring safe and stable operation under severe electrical hydraulic conditions. Firstly, according actual structure hydropower station comprehensive model excitation guide vane opening established. Secondly, design method multiple objective law principle control, paper establishes standard matrix Brunovsky foundation for accurate linearization by selecting targets turbine flow, opening, active power, speed, terminal voltage, designs system, finally obtains general through transformation. Simulation results show that, compared PID Multiple-index Nonlinear Control (MINC), Multi-objective Feedback Sliding Mode (MOFNSMC) has faster recovery capability good disturbance-resistant small oscillation amplitude potential case disturbance. disturbance, it can effectively overshoot number oscillations waterhead flow water hammer pressure structure, improve set.