Optimising Optimising the Gas the Gas Netw Networ ork Helen - - PowerPoint PPT Presentation

Optimising Optimising the Gas the Gas Netw Networ

• rk

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/H2-ready network Our network is resilient to severe weather and climate change projections

Ba Background

Green Gas Key Stats 19 Connected sites: 184 MWh 9 Potential sites: 74 MWh Power Generation Key Stats 35 Connected sites: 1762 MW output >60 Potential sites: >600 MW output Doing All We Can 20 pressure adjustments to WWU sites Re-negotiated CSEP pressures Combined & re-configured low and medium pressure systems

Not Enough!…Something else is needed to facilitate green gas and changing exit demands

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
• perating 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

Lead Gas Distribution Network Supporting Gas Distribution Network Project management, control development Data analysis Compressor design

SWINDON HONITON

IP/MP DG Honiton to Swindon MP Discreet MP Networks HP/MP PRI Connected Bio Site Not Connected Bio Site

SCADA

Supervisory Control & Data Acquisition

Controllable Site 2 Controllable Site 1

\

Green Gas Site

Key

WWU Pressure Reduction Site

Sma marter Pressu ssure Co Control Trial

Equipment

• Loggers & control kit installed at 2 sites
• Logger installed at extremity
• 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

inject, extremity ok = controllable site pressure reduces

Extremity Site

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

• Loggers installed on regulators at

Training Centre ready to test, see pic

• 99% connection stability of internal

communications unit Immediate Challenges

• Ensure correct configuration
• Prove control actions
• Establish power requirements to size solar

panels/batteries required at off grid sites

Co Comp mpresso ssor Trial

Equipment

• Compressor & ancillary equipment at

Controllable Site 1

• Compression from Medium Pressure to High

Pressure Monitoring & Control

• Automatic control

Control Example

• Controllable sites 1&2 not flowing, network

pressures still increasing = compressor switches on so green gas can inject

SWINDON HONITON

IP/MP DG HP/MP PRI

Extremity Site

Controllable Site 2 Controllable Site 1

\

Green Gas Site SCADA

Supervisory Control & Data Acquisition

Progress ss & Next Steps

Immediate Next Steps

• Front End Engineering Design (FEED)

Study required to confirm suitability of chosen location

• Selection & purchase of Compressor

Progress

• Analysis and location feasibility study

complete to select best site for the compressor…has to be in the right place for the green gas

• 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 Testing & Installation at Sites August 2019 to July 2020 Network Trial Jan 2021 to April 2021 Interim & Final Reports

Project Time melines

• Co

Comp mpresso ssor

Now to September 2019 FEED Study & Design August 2019 to April 2020 Purchase, Install & Commission April 2020 to March 2021 Network Trial Jan 2021 to April 2021 Interim & Final Reports

Key y Facts

2 Years and 6 Months ‘Flagship’ Project for WWU Control of distribution networks 132 km geographical area ‘as the crow flies’ NIA Approved Project £2.4 M 4 sites connected and 2 potential Over 679 km MP Network Enabler for green gas targets