Optimal Operation of HVDC Interconnector: Irish Case

TL;DR

This paper presents a profit maximization model for Irish HVDC interconnectors that considers line losses and market price differences, aiming to optimize cross-border electricity trade.

Contribution

It introduces the first profit maximization model for Irish HVDC interconnectors considering line losses and market prices, as a step towards multi-objective operation strategies.

Findings

Model effectively identifies optimal import/export strategies.

Incorporates line losses and market price differences.

Lays groundwork for future multi-objective optimization.

Abstract

In September 2018 EirGrid launched the new electricity market. These new market arrangements integrate the all island electricity market with European electricity markets, making optimal use of cross border transmission assets. Ireland operates three operational HVDC interconnectors: Moyle, East-West, and Greenlink and one in development Celtic interconnector which connect Ireland to Scotland, Wales, and France respectively. Irish market operator, EirGrid, can maximize their operational profit by using the price difference in these electricity markets. We propose a profit maximization modelling which considers the line losses and price difference in these different electricity markets and identifies the optimal import/export of power using HVDC interconnectors. These models in future should incorporate the distribution losses, renewable energy curtailment, and Irish power network congestion levels. The proposed modeling is the first step towards implementing a multi-objective HVDC interconnector operating strategy.