Passivity-Based Nonlinear Excitation Control of Power Systems with Structure Matrix Reassignment

Jianyong Li,Bing Chu,Chunwen Li,Yanhong Liu

doi:10.3390/info4030342

Abstract

Passivity-based control is widely used in electronic circuit systems because it can utilize their internal structures to facilitate the controller design. In this paper, we first propose a dissipative Hamiltonian realization of power systems and discuss the disadvantages of the traditional passivity-based excitation controller. Then, a novel excitation controller is put forward to reassign the interconnection and dissipative matrix, and the corresponding Hamiltonian function. Simulation results verify that the proposed controller can effectively improve the transient stability of the power system.

Highlights

The port-controlled Hamiltonian (PCH) system has gained increasing interest in the control and energy community [1]
We propose a novel Interconnection and damping assignment passivity-based control (IDA-PBC) excitation controller to enhance the transient stability of power systems by choosing a convenient interconnection matrix and find a solution for the matched partial derivative equation
The excitation control of a single machine infinite bus power system based on the IDA-PBC method is investigated

Summary

Introduction

The port-controlled Hamiltonian (PCH) system has gained increasing interest in the control and energy community [1]. By utilizing the energy concept and the internal structural property, several methods have been developed for the controller design of PCH systems [2,3,4,5]. Interconnection and damping assignment passivity-based control (IDA-PBC) is a widely used state-feedback technique which can stabilize the considered nonlinear systems by shaping the energy and re-constructing the structure matrices. The conventional IDA-PBC excitation controller cannot directly reassign the mechanical damping, though the damping in the swing equation is very important for transient stability improvement. We propose a novel IDA-PBC excitation controller to enhance the transient stability of power systems by choosing a convenient interconnection matrix and find a solution for the matched partial derivative equation.

IDA-PBC Methodology of Nonlinear Systems

IDA-PBC Excitation Control of Power Systems

Simulation

Findings

Conclusions