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THE IMPACT OF POWER GENERATION

AND BIOMETHANE ON ANALYSIS

By David Noakes, Network Support Engineer at Wales & West Utilities when the electricity demand is high.
On a typical day, that means switching
WALES & WEST UTILITIES’ (WWU) and biomethane analysis completed is on during the two peaks on a typical
ambition is “to deliver outstanding of a high standard and best replicates diurnal swing.
levels of gas safety, reliability and the site operating on our network. As the PG site switches on rapidly,
customer service, so that we are trusted Considering the rapid development of we witness a sudden drop in pressure.
and valued by millions of people we these sites over the last few years, it Likewise, when the site switches off,
serve every day”. This is delivered by was paramount that we stayed ahead we see a sudden increase in pressure.
ensuring our work abides by WWU’s of the analysis curve and this paper It is this occurrence that needs to be
priorities: will demonstrate the impact of these analysed carefully.
1. Demanding safety always sites and the changes required to cope
2. Driving outstanding service with the demand. Power generation analysis
3. Delivering value for money A change was needed in our analysis
4. Doing all we can to provide a Power generation process to analyse ramp rates. This
reliable gas supply and promote The rise and impact of power saw the introduction of fast transient
sustainability generation (FT) analysis.
5. Designing our future From 2014 onwards, the amount of FT analysis using Synergi allows us
All five priorities must be taken into PG requests we received grew rapidly, to examine the ramp rates of PG sites
account when conducting network reaching a peak in 2019 of almost 600 more closely. Using a 36-minute profile,
analysis, especially when considering requests. In the last four years, we have we can simulate the site switching
new and expanding load types such as gone from having 11 connected PG sites on using, for example, a two-minute
power generation (PG) and biomethane. to 41 with a further 28 accepted sites ramp rate and the site switching
In my current role, I am responsible looking to connect. off instantaneously, simulating an
for ensuring that the power generation Peaking generators generally operate emergency switch off.

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