Flow Batteries Operational experience at the edge of the grid - - PowerPoint PPT Presentation

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Jun 23, 2023 535 likes •654 views

Flow Batteries Operational experience at the edge of the grid Chris Winter RedFlow Limited Smart Grid, Smart Cities Project - Australia Aim: to gather information about the benefits and costs of different smart grid technologies

SLIDE 1

Flow Batteries

Operational experience at the edge of the grid

Chris Winter RedFlow Limited

SLIDE 2

Smart Grid, Smart Cities Project - Australia

Aim: to gather information

about the benefits and costs of different smart grid technologies (including energy storage) in different Australian urban settings

2 sizes of Energy Storage
Distributed – kW class

residential

Network – 200kW

container

40 ESS 20 ESS 1 ESS

SLIDE 3

7 Aims of Energy Storage Trial in SGSC is to quantify…

1. Reduction in peak demand – energy storage as a cost-effective and reliable alternative to network capacity expansion 2. Improvement in network reliability/voltage/power factor/power quality – cost-effectiveness and value of energy storage 3. Energy supply during peak price events – net benefit to retail sector 4. Minimisation of customers’ energy bills – with innovative tariffs e.g. time of use together with energy storage. 5. Combined benefit between consumer, retail and network sectors 6. Investigation of large capacity (~1MVA) storage – extra cost and

ther benefits compared to smaller capacity storage

7. Intermittent generation support – optimisation of renewable energy sources value

SLIDE 4

RedFlow Energy Storage Deployments

61 x 5kW/10kWh ZBM ESS

installed in Newcastle, Scone and Sydney

Sydney: Newington Smart

Home operational 20 months

Newcastle: ESS operational

since February 2012 (staggered daily cycling)

Scone ESS: Will test island
peration of network

Newcastle Installations

SLIDE 5

Results – System Availability

10 20 30 40 50 29-Feb 4-Mar 8-Mar 12-Mar 16-Mar 20-Mar 24-Mar 28-Mar 1-Apr 5-Apr 9-Apr 13-Apr Number of Units

ZBM and ESS Availability - Newcastle and Scone

Newcastle ZBM Available Newcastle ESS Available Scone ZBM Available Scone ESS Available

10 20 30 40 50 60 29-Feb 4-Mar 8-Mar 12-Mar 16-Mar 20-Mar 24-Mar 28-Mar 1-Apr 5-Apr 9-Apr 13-Apr Number of Units

ZBM and ESS Availability - Newcastle and Scone

Newcastle ZBM Available Newcastle ESS Available

SLIDE 6

Results – 15% Evening Peak Reduction

10 20 30 40 50 60 70 80 90 3:40 PM 4:10 PM 4:40 PM 5:10 PM 5:40 PM 6:10 PM 6:40 PM 7:10 PM 7:40 PM 8:10 PM 8:40 PM 9:10 PM 9:40 PM 10:10 PM

Grid-Feed Period – Monday 9 April 2012

Real Power (kW) with Storage Real Power (kW) without Storage Peak Reduction: 15.19% 4 ESS grid-feed 3kW / ESS (12kW total) 9kW: 4pm – 7:20pm 3kW: 7pm – 10:20pm Monday-Friday 4 ESS Charge 2kW / ESS (8kW total) 2am–8am Mon-Fri 65 Residential customers

SLIDE 7

Results – Interesting Observation

Monday 9 April Tuesday 10 April Wed 11 April

20 40 60 80 100 120 140 12:00 AM 6:00 AM 12:00 PM 6:00 PM 12:00 AM 6:00 AM 12:00 PM 6:00 PM 12:00 AM

Automatic Off-Peak Hot Water Systems

Real Power (kW) with Storage Real Power (kW) without Storage Off-Peak Hot Water Systems

4 ESS grid-feeding 3kW / ESS (12kW total) 9kW: 4pm – 7:20pm 3kW: 7pm – 10:20pm Monday-Friday Peak Reduction in Previous Slide

43.29% increase

f 6pm peak

SLIDE 8

Results – Effect of Energy Storage

20 40 60 80 100 120 12:00 AM 3:30 AM 7:00 AM 10:30 AM 2:00 PM 5:30 PM 9:00 PM 12:30 AM 4:00 AM 7:30 AM 11:00 AM 2:30 PM 6:00 PM 9:30 PM 1:00 AM 4:30 AM 8:00 AM 11:30 AM 3:00 PM 6:30 PM 10:00 PM 1:30 AM 5:00 AM 8:30 AM 12:00 PM 3:30 PM 7:00 PM 10:30 PM 2:00 AM 5:30 AM 9:00 AM 12:30 PM 4:00 PM 7:30 PM 11:00 PM 2:30 AM 6:00 AM 9:30 AM 1:00 PM 4:30 PM 8:00 PM 11:30 PM 3:00 AM 6:30 AM 10:00 AM 1:30 PM 5:00 PM 8:30 PM 12:00 AM 3:30 AM 7:00 AM

Effect of Storage on Grid Real Power

Real Power (W) with Storage Real Power (W) without Storage

Friday 6 April Saturday 7 April Sunday 8 April Monday 9 April Tuesday 10 April Wed 11 April Thursday 12 April Fri 13 Apr

Off-Peak Hot Water Systems

11kW Solar

Embedded Generation 11kW Solar

4 ESS grid-feeding 3kW / ESS (12kW total) 9kW: 4pm – 7:20pm 3kW: 7pm – 10:20pm Monday-Friday

SLIDE 9

Learnings – overall a successful deployment

Employ specialist installers
This has been highly beneficial in the roll-out of systems
Battery system supplier should have real-time access to project data
Open transfer of project data should be established prior to project

commencement

Most ESS faults due to power electronics and system issues, not ZBM
Work with utility-qualified System Integrators
Ensure alert system also responds to minor faults
Alert system exists for major faults but minor operational faults have been

time-consuming to find

Importance of load study prior to project commencement
Although this is only a demonstration project, peaks on this feeder actually
ccur during off-peak times

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