Electrical engineering

Physics

Control engineering

Nonlinear system

Passivity

Agronomy

Biology

Gene

Voltage regulator

Engineering

Voltage

Control system

Artificial intelligence

Power (physics)

Controller (irrigation)

Control (management)

Chemistry

Exciter

Computer science

Quantum mechanics

Electric power system

Robust control

Voltage droop

Control theory (sociology)

Biochemistry

Power control

Lyapunov function

Robustness (evolution)

IEEE Transactions on Power Systems

This paper proposes an interconnection and damping assignment passivity-based control (IDA-PBC) for multimachine power systems including hydro-turbine governing systems (HTGS) with surge tank. The main objective is to stabilize the rotor speed and regulate the terminal voltage of each synchronous machine in a power system. The proposed control is decentralized, thus avoiding challenges of communication between generators. Passivity theory is used since the open-loop of the HTGS presents a port-Hamiltonian structure. IDA-PBC allows a control law that maintains the passive structure in closed-loop, guaranteeing its asymptotic stability using Lyapunov's theory. The dynamics of each HTGS are described by an eleventh-order model, which can be reduced to a tenth-order. The proposed control is tested in a 12-bus test system and compared to a standard control, which considers a voltage regulator and exciter based on the IEEE type ST1A excitation system model and power system stabilizer IEEE-PSS1A. The governing system based on a PID control with static and transient droop is also employed. Additionally, the proposed controller is compared to a sliding mode controller. Time-domain simulations demonstrate the robustness and appropriate performance of the proposed decentralized control under different large disturbances.

Passivity-Based Control of Power Systems Considering Hydro-Turbine With Surge Tank