Impact of Synchronous Condensers on Power System Static Voltage Stability Considering Line Contingencies in the Presence of Renewable Generation

TL;DR

This paper investigates how synchronous condensers influence static voltage stability in power systems with renewable energy, considering line contingencies, using the IEEE 14-bus system and continuation power flow analysis.

Contribution

It introduces a method to assess the impact of synchronous condensers on voltage stability under line contingencies with renewable generation.

Findings

Synchronous condensers improve voltage stability margins.

Critical buses are identified under different contingency scenarios.

Renewable generation affects the stability analysis outcomes.

Abstract

Ever-growing electrical loads are having a huge impact on the operation and stability of the power system. Moreover, the integration of renewable generation poses various challenges to the future power system, especially, regarding stability. Thus, this paper presents the impact of synchronous condensers (SCs) on static voltage stability analysis for a test transmission network, considering line contingencies, in the presence of renewable generation. The main purpose of this study was to identify critical buses in the power system when line contingencies occur. Both (N-1) and (N-2) contingencies were considered in this study. The impact of renewable generation is also assessed. To analyze the static voltage stability, the conventional power-voltage (P-V) curve method, using continuation power flow (CPF), is applied on the IEEE 14-bus test system. DIgSILENT PowerFactory software simulations are used to obtain the results. The P-V analysis accurately quantifies the critical buses for both cases, considering (N-1) and (N-2) line contingencies.