Technique for Reactive Loss Reduction and Loading Margin Enhancement Using the Curves of Losses versus Voltage Magnitude

Abstract

This paper presents an alternative methodology to obtain the precise amount of shunt reactive power compensation in order to simultaneously reduce the total reactive power losses, improve the voltage profile and increase the loading margin of power systems. The amount of shunt reactive power compensation to be allocated is determined based on the curve of the total reactive power losses versus the voltage magnitude of a chosen bus. The best places for shunt reactive compensation are defined by the load bus participation factors of the critical mode provided by the static modal analysis. Simulation results employing shunt capacitors obtained with the new approach for the IEEE test systems (14, 57 and 300 buses) show that the procedure leads to a reduction in total reactive and active power losses and simultaneously improves the voltage profile and loading margin.

Estimation of Total Real and Reactive Power Losses in Electrical Power Systems via Artificial Neural Network

“…The volume of losses in transmission and distribution systems is significant, typically ranging between 3% and 13%, highlighting their relevance to the efficiency of the system as a whole [1]. The analysis of electrical power systems often uses load flow calculation, a fundamental and widely used approach [2][3][4]. Many applications, from expansion planning to network reconfiguration and storage capacity, depend on these calculations [5][6][7].…”

Post-Contingency Loading Margin through Plane Change in the Continuation Power Flow

“…Energies 2023, 16, 7583 2 of 13 to determine the loading margin, is the main tool in contingency studies. The continuation power flow (CPF) with parameterization techniques [5][6][7][8][9] is the method used to obtain these curves, as they can generate the entire P-V curve by using the appropriate parameter.…”

“…Ref [8] addresses precision issues in the holomorphic embedding method and suggests a multi-stage scheme to refine the P-V curve. Lastly, [9] presents an alternative methodology for shunt reactive power compensation allocation, aiming to reduce total reactive power losses, improve voltage profiles, and increase the loading margin. In the literature, several studies have been conducted on contingency analysis [10][11][12][13].…”