# Improving Voltage Profile of the Nigerian Power Grid

## TL;DR

This paper presents a framework for adjusting generator voltage setpoints to improve the Nigerian power grid's voltage profile, reducing collapse risk and enhancing resilience through real-world case studies.

## Contribution

It introduces a circuit-theoretic optimization method for re-dispatching voltage setpoints, specifically tailored for improving grid stability in Nigeria.

## Key findings

- Improved voltage profiles in Nigerian grid test cases.
- Enhanced grid resilience and security after re-dispatch.
- Demonstrated effectiveness through contingency analysis.

## Abstract

Extreme voltages at the system nodes are one of the primary causes for total and partial collapse of the Nigerian grid. In this paper, we develop a framework to re-dispatch the voltage set-points of committed generators in the grid to improve the voltage profile of the system nodes thus lowering the likelihood of a grid collapse. This framework is an extension of circuit-theoretic formulation that can robustly solve general-purpose grid optimization problems. In the results section, we re-dispatch the voltage setpoints for committed generators in real-life Nigerian grid operation and planning test cases to improve the overall voltage profile of the grid. We further demonstrate that the re-dispatched grid is more resilient and secure than the base case through running contingency analyses.

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Source: https://tomesphere.com/paper/1905.13090