Optimising Optimising the Gas the Gas Netw Networ ork Helen Fitzgerald – Wales & West Utilities
Contents • A bit about Wales & West Utilities • Project Background • What are we doing? • Why are we doing it? • Project Partners • Smarter Pressure Control Trial • Compressor Trial • Key Facts
A A bit about WWU WWU We are the Gas DSO & Designer for Wales & south west England We supply c.2,000 micro generation sites (CHPs) We have 37 power stations connected with 1.76 GW total capacity We have 1.7 TWh green gas connected to our network (19 AD sites) We flexibly deploy 58 GWh of storage each day (UK 210 TWh seasonally) We’re investing in our future low cost and green gas/H 2 -ready network Our network is resilient to severe weather and climate change projections
Background Ba Green Gas Key Stats 19 Connected sites: 184 MWh 9 Potential sites: 74 MWh Power Generation Key Stats 35 Connected sites: 1762 MW output Not Enough!…Something else >60 Potential sites: >600 MW output is needed to facilitate green gas and changing exit Doing All We Can demands 20 pressure adjustments to WWU sites Re-negotiated CSEP pressures Combined & re-configured low and medium pressure systems
What are we doing? Looking at proving new applications of existing technology through field trials to primarily facilitate additional green gas into the network: 1 . Smarter Pressure Control to maximise existing demand in distribution networks whilst maintaining security of supply 2. Compression into higher pressure tiers to create additional demand on the distribution network 3. Storage review to asses how it can help and the types available?
Why y are we doing it? • Investigating innovative ways of operating and controlling the gas network to solve real green gas entry issues. • To achieve increased capacity in constrained/ saturated distribution networks. • UK wide not just WWU
The Project Partners Project management, Supporting Gas Lead Gas Distribution control development Distribution Network Network Compressor design Data analysis
Sma marter Pressu ssure Co Control Trial SWINDON Controllable Site 1 SCADA Equipment • Loggers & control kit installed at 2 sites Supervisory Control • Logger installed at extremity & Data Acquisition • Existing telemetry at Green Gas Site Monitoring & Control • Automated Control via SCADA logic • Manual overrides Control Example \ • High pressure at Green Gas Site, unable to HP/MP PRI Green Gas inject, extremity ok = controllable site Site pressure reduces Controllable Site 2 Key IP/MP DG Honiton to Swindon MP Discreet MP Networks Extremity Site Connected Bio Site Not Connected Bio Site WWU Pressure Reduction Site HONITON
Progress ss & Key y Ch Challenges Progress • Successfully connected loggers to SCADA • Successfully tested loggers at site • Control philosophy document written • Initial logic to cover identified use cases written Immediate Challenges • Loggers installed on regulators at • Ensure correct configuration Training Centre ready to test, see pic • Prove control actions • 99% connection stability of internal • Establish power requirements to size solar communications unit panels/batteries required at off grid sites
Co Comp mpresso ssor Trial SWINDON Equipment Controllable SCADA • Compressor & ancillary equipment at Site 1 Supervisory Control Controllable Site 1 & Data Acquisition • Compression from Medium Pressure to High Pressure Monitoring & Control • Automatic control Control Example \ • Controllable sites 1&2 not flowing, network HP/MP PRI Green Gas pressures still increasing = compressor Site switches on so green gas can inject IP/MP DG Controllable Site 2 Extremity Site HONITON
Progress ss & Next Steps Progress Immediate Next Steps • Analysis and location feasibility study • Front End Engineering Design (FEED) complete to select best site for the Study required to confirm suitability of compressor…has to be in the right place chosen location for the green gas • Selection & purchase of Compressor • No blockers for additional land required & power supply upgrade at selected sites • Logic development has started
Project Time melines s - Sma marter Pressu ssure Now to August 2019 Jan 2021 to April 2021 Testing & Installation at Sites Interim & Final Reports August 2019 to July 2020 Network Trial
Project Time melines - Co Comp mpresso ssor Now to September 2019 April 2020 to March 2021 FEED Study & Design Network Trial August 2019 to April 2020 Jan 2021 to April 2021 Purchase, Install & Commission Interim & Final Reports
Key y Facts NIA Approved 2 Years and 6 ‘Flagship’ Project Over 679 km MP Project £2.4 M Months for WWU Network 132 km Control of geographical area distribution 4 sites connected Enabler for green ‘as the crow flies’ networks and 2 potential gas targets
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