South West England Network Analysis

Edmunds, Calum and Gill, Simon (2017) South West England Network Analysis. University of Strathclyde, Glasgow.

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Abstract

The report presents initial analysis of the electricity network in SW England including calculation of Locational Marginal Prices (LMPs) and the flow of power under three generation and demand cases and in two years: 2017 and 2020. The 400 kV and 132 kV networks in Cornwall and Devon are modelled along with a 33kV network from the Rame Bulk Supply Point. The report includes case studies of minimum/maximum demand and high/low distributed generation (DG) output representative of 2017 and a potential 2020 scenario. Analysis of constraints, line loading, voltage and LMPs is carried out for each case. Studies are conducted assuming an illustrative GB-wider wholesale price of electricity of £50/MWh. Key results show that where network constraints are not binding, LMPs can vary from £56.10/MWh in the cases of high import to £40.20/MWh in cases of high exports. Where constraints are binding and are caused by large availability of zero marginal cost renewable generation, the LMPs will drop to £0/MWh behind those constraints.

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