The document summarizes a presentation given at TransGrid's 2014 Demand Management Innovation Forum. It discusses various technology trials being conducted related to demand management, including residential batteries, grid-scale batteries, optimizing existing load control technology, and integrating demand response capabilities into appliances. It also provides preliminary results from Ausgrid's trials with distributed storage and automated demand response for non-residential customers. Over 60 people attended the forum to discuss demand management activities across Australia's National Electricity Market.

1. TransGrid’s 2014 Demand
Management Innovation Forum
Technology Trialling
Rob Simpson, Ausgrid
24 September 2014
1 | The role of networks in a changing market dynamic September 2014

2. Introduction
TransGrid’s 2014 Demand Management Innovation
Forum was held on 24 September in Sydney.
This is an annual event that TransGrid hold to discuss
demand management activities both in our network
and across the NEM.
More than 60 people joined the conversation, ranging
from large energy users, consumer advocates,
researchers, technology providers and other
networks.
2 | TransGrid’s 2014 Demand Management Innovation Forum 24 September 2014

3. Technology trials as part of DM innovation projects – Overview
3
New technology - batteries
 Residential customer batteries (Smart Grid, Smart City)
 Newington grid battery (DMIA project)
 TransGrid’s iDemand project (DMIA project)
Technology integration
 Ausgrid CoolSaver trial using AS4755 interface on air conditioners (DMIA project)
Technology development and new solutions
 Optimising existing “ripple” technology for HW load control (DMIA project)
 Developing new demand response control devices (DMIA project)
Future DM technology projects
 Automatic demand response (ADR) for non-residential customers (DMIA project)
 Energy efficiency technologies (DMIA project)
Energy-use feedback technologies
 Results from feedback technology and tariff trials (Smart Grid, Smart City)

4. New technology - Ausgrid distributed storage experiences
Customer Battery Storage
Smart Grid, Smart City
 Generates 5kW output up to 2 hours
 Weighs close to 500kg
 Size of a narrow household fridge
 Connected at the meter board
 Zinc Bromide flow battery
Grid Battery Storage
Demand Management Innovation
 Storage size 60kW for 2 hours
 120kWh Lithium Ion batteries
 Size of a 20 ft container
 Directly connected to the local network
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5. Central control of customer batteries– summer peak day
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Average Active Power (kW)
Battery Performance (40 batteries) - 18 January 2013
Actual performance
Ideal performance

6. Summer peak reduction
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Average Active Power (kW)
Peak reduction effect of batteries on Jesmond feeder load: 18 January 2013
Estimated feeder Load (no batteries)
Actual feeder load (with actual battery operation)
Estimated feeder load (ideal battery operation)
Actual: 0.4% (24kW)
Ideal: 1.7% (91kW)
Theoretical Max. : 3.7%
(200kW)
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3.5-4 hrs

7. Newington grid battery preliminary results
• Lithium ion battery system (60kW/ 120kWh) connected to low voltage network with a
single customer with a 64kWp photovoltaic systems and pumping load.
• Automated battery management functions being trialled including “Load Management”
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Average Watts in a one minute time period
Low voltage transformer load with/without battery
Load without battery
Load with battery in Load Management

8. TransGrid’s iDemand
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The project aims to halve the peak
demand of TransGrid’s Wallgrove site:
• 53.5 kW crystalline and 45.3
kW thin-film (CD-Te) solar
panels
• Energy efficient LED lighting
• 400 kWh of lithium polymer
battery storage
• Due for completion end of
September 2014
TransGrid are eager to form
research agreements with
industry and academics

9. Technology integration: residential appliances, generation/ storage
• AS4755 suite of standards for Demand
Response Modes and interfaces built into
major residential appliances:
1. Air conditioners
2. Pool pump controllers
3. Electric water heaters
4. Electric vehicle chargers
• AS 4777 draft for Inverter Energy
Systems (e.g. solar inverters and battery
storage systems), now includes standard
similar Demand Response Modes
9

10. Ausgrid CoolSaver – integration of technology
Key results so far
• More than 16,000 customers in selected suburbs in two areas received letter and calls
• Over 1,200 registrations of interest online, but only 130 with AS4755 A/C models
• A total 108 customers now participating, trials to run over 2012/13 & 2013/14 summers
• Both “Ripple” and “SMS” signal receivers being trialled (independent of smart meter)
10

11. Ausgrid CoolSaver – integration of technology
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Air conditioner electrical power (KiloWatts)
Participant 1 - Air conditioner power on summer peak dispatch day 4
AC power on summer dispatch day 4

12. DM technology optimisation
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Load control using existing “ripple” technology with power line signals
• 520,000 customers on controlled load tariffs (360,000 OP1, 160,000 OP2)
• DM innovation trial over summer 2013/14 showed that optimisation of OP2 summer
control schedules can reduce load during summer afternoons
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Cardiff Zone (Weekday of Yearly)
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Year 2013/14
Reduction of
load between
2:30-5:00pm

13. DM technology development and alternative solutions
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Load control options utilising existing infrastructure (e.g. mobile phone networks)
• A SMS signal receiver has been developed for the Ausgrid CoolSaver trial
• This solution offers direct to the appliance control and two way communications,
independent of the smart meter

14. DM technology development and solutions
Comparison of the two technology solutions
14
1. ‘Ripple’ solution
a) Only one way direction of signal
b) Broadcast signal makes it difficult to
individually address devices
c) Not all areas have ripple control
equipment
d) The equipment is already owned and
being used for traditional load control,
but needs to be maintained
2. Mobile-phone network and the SMS
a) Two way communications allowing
status updates from devices, and
verification of load and signals
b) Ability to individually address devices
c) Mobile phone network arguably has
better coverage
d) Network is maintained by others, but
there is a cost to use

15. Future plans for Ausgrid DM innovation projects
15
Ausgrid DMIA focus for 2009-2014 regulatory period was
• Residential appliance load control projects
• Non-residential projects and programs
For the 2014-2019 regulatory period, development of new innovation projects is underway
1. Automatic demand response for non-residential customers
• Provides end-to-end automatic load reduction without manual intervention
• Technology is integrated into a customer’s building/energy management
system.
• Open standards may make this technology more cost-effective
2. Energy efficiency technologies
• Lighting (e.g. LED)
• HVAC
• Refrigeration
• Automated control and management systems
• Pool pumps (residential)

16. Energy-use feedback technology: customer experiences
Under the Smart Grid, Smart City project, Ausgrid led a consortium of partners and a range
of energy-use feedback technologies and innovative tariffs were trialled including:
– In home displays
– Online portals
– Home area networks
– Dynamic peak rebates and tariffs
16

17. The Smart Grid, Smart City project
• Australian Government Initiative www.smartgridsmartcity.com.au
• Consortium led by Ausgrid with partners including IBM, GE Australia, CSIRO,
Transgrid, Gridnet, City of Newcastle, City of Lake Macquarie, Hunter Water, Sydney
Water, University of Newcastle, University of Sydney
• Late 2010 to September 2013
• Project streams included: Customer Applications, Smart Meter Infrastructure, Electric
Vehicles, Grid Applications and Distributed Generation and Storage
• Information Clearing House, repository for the data, information and reports
containing over 5 Terrabytes of data and over 6 billion network measurements
17
https://ich.smartgridsmartcity.com.au/

18. Table discussions
18 | TransGrid’s 2014 Demand Management Innovation Forum 24 September 2014