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Voltage Stability Index Based on Multi-bus Reactive Power Loading | IEEE Conference Publication | IEEE Xplore

Voltage Stability Index Based on Multi-bus Reactive Power Loading


Abstract:

Voltage stability analysis provides an assessment of the weak, unstable or uncontrollable sections of the power system network that may pose a risk for future load growth...Show More

Abstract:

Voltage stability analysis provides an assessment of the weak, unstable or uncontrollable sections of the power system network that may pose a risk for future load growth due to unexpected voltage collapse. Different methods of determining susceptible buses have been demonstrated over the decades, with V-Q curves being used to determine the critical point and stable operating region of a particular load bus. However, the underlying mutual influences which result from how buses are interconnected, haven't been correlated directly to the voltage profile and stability of load buses. This paper aims to exploit the combined effect that interconnected load buses have on each other, under uniformly distributed multi-bus loading conditions and the conventional method of the sole bus loading analysis, to predict better the strength of a load bus by using a V-Q curve based index. This variable-state-based approach was compared with the inherent network structural-based method giving a broader scope of the system characteristics under various loading states.
Date of Conference: 23-27 August 2021
Date Added to IEEE Xplore: 28 September 2021
ISBN Information:
Conference Location: Nairobi, Kenya

I. Introduction

The lack of sufficient reactive power in a power system coupled with the continuous increase in load demand are the key factors, among many others, contributing to the occurrence of voltage collapse in modern power systems [1]–[3]. Assimilation of intermittent renewable energy units into the power networks and emerging industrial load centers, which heavily absorb reactive power, has led to a broader and uncertain range of grid operating conditions, including reduced stability margins, especially when optimum coordination is not done [4]. That being so, continuous monitoring and control of power systems through the use of accurate voltage stability indices is urgently needed [3] [5].

References

References is not available for this document.