Optimal voltage control using singular value decomposition of fast decoupled load flow jacobian

TL;DR

This paper presents an optimal voltage control method using singular value decomposition of the fast decoupled load flow Jacobian to improve voltage regulation in power systems.

Contribution

It introduces a novel approach to determine voltage set-points by maximizing input-output effects via SVD of the FDLF Jacobian, enhancing voltage control.

Findings

Effective voltage regulation demonstrated on IEEE test systems.

Improved voltage set-point determination for PV buses.

Method shows potential for practical power system applications.

Abstract

The problem of regulating voltages within the required limits is complicated by the fact that power system supplies power to a vast number of loads and is fed from many generating units. As loads vary, reactive power requirements of the transmission system vary. Moreover, voltage magnitude is relatively less sensitive to active power compared to reactive power due to high X/R ratio of transmission lines. Therefore, separating voltage control from active power is not only justified but also the common and practical way in power transmission systems. Considering these facts, the fast decoupled power flow jacobian can be used to control voltage magnitudes by reactive power compensation. In this paper, an optimal voltage control is presented to obtain new voltage set-points for PV buses by maximizing the effect of input change on output change using the Fast Decoupled Load Flow (FDLF) jacobian matrix. The proposed algorithm was tested on three IEEE systems: 9 bus, 14 bus and 30 bus systems.