RELIABLE ELECTRICITY METERING SYSTEMS REVENUE MANAGEMENT. Nathi & Ntsiki Nkwanyana & Mpiyakhe Mashinini

Transcription

1 RELIABLE ELECTRICITY METERING SYSTEMS REVENUE MANAGEMENT Nathi & Ntsiki Nkwanyana & Mpiyakhe Mashinini

2 CONTENTS Introduction Meter Engineering Vs Revenue Protection Procurements of Meters Revenue Protection Projects Disconnections & Reconnections Sweep (Meter Inspections) Residential & Business Customers (CT Driven Meters Installation of Split Prepayment Meters Removal of Illegal Services Forensic Investigation Electrification of Informal Settlements Protective Structures Conclusion

3 OUR PROFILE INTRODUCTION The main parameters which define the Electricity Unit (EU) are: Area of Supply: km² Number of Customers: (95% of formalised dwellings) Number of Employees: Est Peak Demand & Sales: MW & GWh Annual Turnover: R 9,4 billion (2012/2013) Asset Value: R 18,3 billion Voltage Levels: *275 kv, 132 kv, 33 kv, 11 kv (*Only municipality with this voltage level.) Electricity is extremely dangerous, life-threatening and cannot be seen. It is an essential service required 24 hours a day, 365,days a year. It has huge social and economic impacts if not managed properly. Highly technical business requiring highly competent engineering personnel to make effective decisions to ensure safety compliance in terms of the OHS Act and ensure electrical network availability.

4 INTRODUCTION Distribution of Revenue From Sales

5 TOTAL % ENERGY LOSSES ETHEKWINI ELECTRICITY /91 93/94 96/97 99/00.02/03.05/06.08/09.11/12 TOTAL % ENERGY LOSSES

6 Electricity losses: TOTAL % ENERGY LOSSES OTHER MUNICIPALITY E ARTICLE % Losses City of Tshwane 11 City Power (Johannesburg) 22 Ekurhuleni 11 ethekwnini (Durban) 6 City of Cape Town 9 Buffalo City (East London) 11 Nelson Mandela Bay (Port Elizabeth) 10 Mangaung-Centlec 11

7 TOTAL % ENERGY LOSSES OTHER MUNICIPALITY WORST PERFORMERS % Losses Nquthu (KZN) 63 Nxuba (Adelaide) 47 Ngwathe (Parys) 45 Gariep (Burgersdorp) 42 Ulundi 41 Ditsobotla (Lichtenburg) 40 Msukaligwa (Ermelo) 39 Madibeng (Brits) 38 Thembelihle (Hopetown) 37 Govan Mbeki (Secunda) 36

8 METER ENGINEERING VS REVENUE PROTECTION METER ENGINEERING The Meter Engineering Branch is responsible for :- Planning, designing, construction, inspection and maintenance of all commercial and industrial metering equipment used for billing purposes. The acquisition, specification and commissioning of new metering technologies. REVENUE PROTECTION DEFINATION The steps and actions taken by the utility to Prevent, Eliminate, Minimise and recover any loss of revenue due to theft or non-payment for services supplied to consumers. The principles and practices used for the protection of the environment and consumers to ensure their safety from any harm, injury and electrocution due to the unauthorized use of electricity.

9 UNCERTAINTY OF MESUREMENTS Testing Calibration Tolerance A MARGIN OF DOUBT

10 REDUCING UNCERTAINTY Meter Engineering Branch Revenue Protection Branch Customer Services Branch

11 METER ENGINEERING BRANCH Technical Specifications all types of meters. The measurement processes and established rules All CT/VT driven meters (installation and maintenance) Test and calibration Good practice traceable Calibration and record keeping

12 REVENUE PROTECTION BRANCH None Technical Management Controlling and managing the uncertainty in the measurement (readings, tampering, meter management ) Revenue Protection Controlling and managing the uncertainty in the revenue collection (Disconnections) Network Controlling and minimize the uncertainty in the network (illegal connections)

13 REVENUE PROTECTION PROJECTS Disconnections & reconnections Meter inspections Residential & CT Driven Meter Inspection. The Removal of Illegal connections Forensic Investigation. Protective Structures Strategic Projects :- Installation of Split Prepayment Meters & Electrification of Informal Settlements.

14 DISCONNECTIONS & RECONNECTIONS TYPES OF DISCONNECTIONS There are five basic types of disconnections, the reconnections being the reversal of the disconnection process: Normal Disconnections Doctored Disconnection. Hard Disconnections. Remove all Gear (R.A.G.) Service Cable Removal Disconnection

15 DISCONNECTIONS PROCESS Billing & Customer Mgt Systems Manual Data Capture Pending disconnect ion Pool Telephone Feedback from the field Overnight Printing Field work Execution

16 DISCONNECTIONS & RECONNECTIONS Financial Year Total No. of Disconnections Total No. of Reconnection s Monthly Average DO`s Recon:Disc on ratio 2005/ / / / /

17 DISCONNECTION CHALLENGES Challenges Resolutions T-Joints Cutting in of CDUs Consumer refuses access Use of GIS to locate supply Vacant properties Ascertain owner contact details Level 1 Disconnector unable to climb poles Request supervisors to do the disconnection

18 INSTALLATION OF SPLIT PREPAYMENT METERS

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20 CT DRIVEN METER INSPECTIONS

21 THE REMOVAL OF ILLEGAL CONNECTION

22 THE PROTECTIVE STRUCTURES Revenue Protection started pilot project in 2006 to protect meter kiosks. Asset protection to ensure minimal energy losses (non-technical). Protective enclosures over meter kiosks to prevent unauthorised access and damage. Enclosure has high security features. It can be monitored and controlled remotely

23 THE PROTECTIVE STRUCTURES Meter Room doors were vandalised Tenants were tampering with units Loss of revenue

24 THE PROTECTIVE STRUCTURES Revenue Protection started pilot project in 2006 to protect meter kiosks. Asset protection to ensure minimal energy losses (non-technical). Protective enclosures over meter kiosks to prevent unauthorised access and damage. Enclosure has high security features. It can be monitored and controlled remotely

25 THE PROTECTIVE STRUCTURES VARIATIONS 3 Variations 9 Way/CDU 16 Way 2x 16 Way

26 THE PROTECTIVE STRUCTURES LV door access - front HV door access - rear

27 THE PROTECTIVE STRUCTURES OUTCOME Revenue generation - Consumers pay for electricity Assets protected No tampering/ vandalism Improved monitoring Increased safety

28 THE ELECTRIFICATION OF INFORMAL SETTLEMENTS The provision of electricity leads to job creation, and a subsequent rise in disposable income in a community. A standard has been developed by Electricity Department to safely electrify informal settlements. Most of communities living in the informal settlements have been without electricity for over 15 years. Most of these communities are indigent as per Council policy and should qualify for free basic electricity after the connections have been made.

29 THE ELECTRIFICATION OF INFORMAL SETTLEMENTS The provision of electricity leads to job creation, and a subsequent rise in disposable income in a community A standard has been developed by Electricity Department to safely electrify informal settlements. Most of communities living in the informal settlements have been without electricity for over 15 years. Most of these communities are indigent as per Council policy and should qualify for free basic electricity after the connections have been made.

30 THE ELECTRIFICATION OF INFORMAL SETTLEMENTS The Council resolution was taken to not supply electricity where there are following issues: Houses built where there is soil erosion Houses built on and around the swamp / flood prone areas Houses built underneath High Voltage line and around that servitude Houses built on road / Spoornet or Rail servitudes Houses built where there are environmental issues Houses built on Private land Houses built where there are any other Health and Safety hazards

31 Service pole next to an informal dwelling

32 Mounting bracket supported on a service pole

33 Ready board inside an informal dwelling

34 Example of the project that did not meet the criteria

35 Example of the project that did not meet the criteria Cont

36 Example of the Transit Camp project

37 Example of the Transit Camp project Cont

38 Example of the Transit Camp project Cont

39 CONCLUSION Real measurements are never made under perfect conditions. Flaws in the measurement may be visible or invisible.