TOPIC

• Aubrey Mochela

• GM:ICT and Project Manager Load Limiting

• City Power (CoJ MoE)

• South Africa

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Smart Meter Key Benefits

• Customer Billing Analysis

• Trending of usage

• Works with ToU

• Enforce Domestic Load Reduction

• Reduce Load Shedding

• Works with ToU

• Customer Cost Saving Benefit

• Peak Load Reduction

• 100000 Smart Meters Rolled Out to date

• Protective Structures

1. Auto Billing

2.

Time of Use (ToU)

4.

Web Portal

3.

Load Limiting

Revenue by Customer Category

Customer category Numbers % of Clients Revenue % Revenue

Agriculture 33 0.01% 900 051.00 0.01%

LPU 4 407.00 1.06% 6 436 192 075.00 52.59%

Business 10 936.00 2.64% 1 125 511 701.00 9.20%

Domestic (Post Paid) 148 881.00 35.93% 3 674 384 070.00 30.02%

Prepaid Clients 250 085.00 60.36% 1 001 120 584.00 8.18%

Typical Utility Leakages

METERING LOSSES

SALES LOSSES BILLING LOSSES ACCOUNTING

LOSSES DISTRIBUTION

LOSSES

• Technical Line & Transformation Losses

• Outage and Overloading

• Load Balancing • Voltage Regulation

Philosophy • Energy

Reconciliation • Profit Margins • Inventory Integrity • Network Monitoring

& Visibility

• Meter manipulation

• Meter by-pass • Energy Tapping • Biased

Estimations • Reading Errors • Lost Readings • Stuck & Faulty

Metering • Multiplication

Factor Errors

• Estimation Errors • Tariff

misalignments • Credit Integrity • Misplaced

Orders • Adjustments

Integrity • Contracts

Integrity • Misconfiguration

on billing system

• Unbilled Customers

• Missing Customers

• Prolonged Estimations

• Illegal Conversions to lower tariff classes

• Misconfiguration • Overcharges • Undercharges

• Missing Payments

• Late Payments • Non-Payments • Bad-debt

Integrity • General Ledger

Errors • Faulty Reports • Profit Margins

TECHNICAL LOSSES

OPERATIONAL LOSSES FINANCIAL LOSSES

City Power Smart Meter Performance Current Challenge Proposed Solution

• Inaccessible Meters Change these meters to smart meters

• Faulty Meters

Replace all faulty meters with either prepaid or

conventional smart meters depending on meter

accessibility.

• System Meter Updates Locate and/or recreate job cards

• Incorrect Address Meter audit to verify the stands supplied with

electricity and meter number

• Illegal connections Investigate and remove

Load Management Activities

System Activity Action Time Start End

Set load to heavy (Stove) Freedom 14:05

Use ARAC to set the Load Freedom 14:05

Bulk SMS Send SMS to customer (Inform) Makwena 14:07

SATURNE Set the Load Limiting Strategy Makwena 13:50 14:10 14:30

Scenario 1 Ignore Instruction Freedom 14:10

Smart Meter Load Limiting trips Automated 14:11 14:11:30 14:12:00

Scenario 2 Use ARAC to reduce the Load Freedom 14:12

Smart Meter Load Limiting meets threshold Automated 14:12

Scenario 3 City Power sets a schedule to override control Makwena 14:15 14:30

Load Limiting With

Automated Remote Appliance Control

Load Limiting Sequencing

Ripple Control & ARAC

Start 17:30

End 20:00

Load Limiting

Start 17:00

End 19:30

Load Shedding Period

Start 17:00 End 22:00

Manage Time of Use and Reduce Your Cost

Load Limiting Look and Feel Time When Load Limiting was

dispatched to field

Duration of Load

Limit Event

Load limit Event

Information:

- Area

- Total Meters

- Set Limit

- Expected Load

Reduction

- Actual Load

Reduction

Progress of Load

Limit Event

Key Load Profile

Info:

- Average Area

Load Profile

(based on historic

data)

- Actual Real time

load reduction

curve

- Load Limit

- Load Limit Period

Satellite View of

Meters within Load

Limit Area

Load Limiting Facts and Figures

Load Limiting Results

The summary below provides the executive management with the overall statement of performance of the Load Limiting Project. The first phase of the project is understood to be successful even though some minor issues were experienced and rectified. The table below provides the project key areas and performance thereof:

Key Area of Focus

Meter Population MW Planned MW Realized Overall

Achievement

Launch at Aspen Hills 82 meters 92kW 131kW

Week 1 of Mass Rollout 2952 meters 18MW 14,26MW

Week 2 of Mass Rollout 11130 meters 90MW 53,76MW

Week 3 of Mass Rollout 31679 meters 67MW 50MW

What If I am not at home – Home Automation

What if I am not at home ?

• Technology is available to switch appliances remotely

• City Power has done a business case for installing the technology at the

client’s premises.

• The client can opt to install the web based technology, which allows one to

control from a smartphone/Web.

• The technology uses GPRS technology.

Demonstration will now commence.

Automated Remote Appliance Control (ARAC) Smart Home Automation

Automated Remote Appliance Control (ARAC)

ARAC Value Add The platform provides the following features:

Ability to data warehouse all the data obtained from the controllers.

Provide redundancy and fail-over.

Have the ability to monitor the following on each contactor connected to each

controller:

The contactor status – is it switched on or off and which schedule (municipal

or end customer) or override is regulating the control.

If the contactor is on (allowing current to flow), how much current is flowing

through the circuit?

Have the ability to switch each contactor individually into one of the following

operation modes:

Override off

Override on

Set to schedule

Have the ability to create operation schedules for individual and groups of

controllers.

Connectivity from the home to the Internet

Smart Appliance Control using mobile platform

Cooperation Between Municipalities on Smart Metering Solution (Smart City)

Uraia is one of the International forums stimulating cooperation Platform that brings together local government, service and technology

providers

Support use of SMART technologies addressing

Municipal Finance

Management of Public Services & Infrastructure

Transparency and Accountability

SALGA and City of Johannesburg are active participants

Questions &

Answers