EU DONOR FUNDED SMART GRID PROGRAMME 1
Historical Background Msunduzi Local Municipality is a local municipality in Umgungundlovu District Municipality, KwaZulu-Natal, South Africa. It encompasses the city of Pietermaritzburg, which is the capital of the KwaZulu-Natal province. Since 1989, the electricity demand in Msunduzi Municipality s network has grown from 205 MVA in 2005 to 380 MVA in 2014, with significant increases in technical and non-technical losses. Much of the technical infrastructure has aged and is now approaching end of life, while still carrying the full amount of load. Routine maintenance on the network has reduced over the years and during the period of administration. This is evident in volume of failed equipment and network assets recorded. In order to mitigate the anticipated growth in load over the next few years, decrease the technical and non-technical losses, mechanisms must be put in place that will enhance service delivery and improve revenue collection. The introduction of advanced Asset Management Project through the participation of Msunduzi Electricity in the EU Donor Funded Smart Grid 2Programme has the potential to aid the utility in addressing its existing unsustainable position.
WAY FORWARD It is therefore the intention of Msunduzi to show the strategic link between previous projects/ programmes as well as the current project being undertaken and future projects being planned. The Sanedi project of Advanced Asset Management Systems will therefore assist in deployment of Asset Management Systems, Customer Relationship interface systems and Network sensors to ensure that the infrastructure installed is operated and maintained optimally to realize the full value of the asset and also to ensure that it operated at optimism level for the full duration of its life. 3
WAY FORWARD Advanced Asset Management Project will determine Msunduzi Municipality s Managements Methodology with Smart Grid thinking and assigning and implementing an Advanced Asset Management solution. At present Msunduzi Municipality does not have Maintenance Management Systems which integrates asset condition assessment (determining predictive maintenance planning), repairs conducted on electrical assets and the normal operation of assets. 4
MAJOR NETWORK FAILURES Mkondeni Primary Woodburn Primary Retief Primary Northdale Primary Masons Primary Crossways - 132 /11kV faulted - 33/11kV transformer faulted - 33/11kV transformer faulted - 11kV Switchgear faulted - 11kV Switchgear faulted - Switchgear faulted As a results of these major faults a plan to rehabilitate the network was carried out. 5
6 PRIMARY 132kV NETWORK REHABILITATION PLAN FOR MSUNDUZI MUNICIPALITY
Proposed Primary 132kV Network Upgrade Current primary network 33kV: Riverside, Retief, Archbell, Pine Street, Woodburn, Hesketh and Crossways substations 88kV: Masons substation 132kV : Northdale, Prince Alfred, Harp, Hulett, Petronet and Mkondeni substations Diversified Maximum Demand 305MVA The ageing 33kV infrastructure has come to the end of its useful life Standard two 40 MVA 132/11kV transformer bay Substations 132 kv ring feed network with short line differential protection to provide discrimination under fault conditions. Garlington Substation and a new 32 metre wide double circuit transmission line servitude need to be negotiated 7
Project Cost Breakdown Northdale 132/11 kv 15,424,220 Riverside 132/11 kv 37,305,376 Retief 132/11 kv 33,685,344 Archbell 132/11 kv 43,240,000 Pine Street 132/11 kv 42,330,000 Prince Alfred 132/11 kv 37,340,000 Woodburn 132/11 kv 34,626,714 Hesketh 132/11 kv 32,430,000 Bishopstowe 132kV 18,925,090 Masons 132/11 kv 46,790,000 Crossways 132/11 kv 13,826,714 Eastwood 132/11kV 23,689,220 City Grid 132kV 41,320,000 Crossways Cable 132kV 65,760,000 Mkondeni 132/11 kv 1,580,844 Petronet 132/11 kv 1,580,844 Harp 132/11kV 1,580,844 132kV Overhead line 132kV 5,819,220 New SCADA Control Centre 132 & 11kV 50,000,000 New Smart Metering System 40,000,000 11kV Secondary Distribution 11kV 156,281,701 Contingency Sum 74,353,613 Professionals Fees 74,353,613 TOTAL 892,243,357 9
Annual expenditure forecast July 2014 to June 2015 R 70,740,414 July 2015 to June 2016 R 570,058,978 July 2016 to June 2017 R 251,443,966 10
11 PROPOSED 132kV NETWORK
Northdale Substation Installation of three 132/11kV 30MVA YNyn0 transformers. Replace 11kV switchboard. Install two incoming line Circuit Breakers Install line differential protection on two 132kV line circuits. Replace perimeter fencing. Install new 11kV cable feeder protection and supervisory control. Riverside Substation Replace incoming Mersey feeder bays The existing line traps will be removed as the communication channel to Mersey will be replaced with fibre optic communications. Two new line feeder bays need to be established at Riverside for Msunduzi and Retief to be cut into Riverside. Existing terminal tower to be relocated to a more suitable position. New 11kV switchroom to be built. Replace existing 11kV switchgear. Install new 11kV Feeder Protection Install two New 40MVA 132/11kV transformers 33kV to be phased out after Woodburn, Hesketh and Riverside 33/11kV transformation has been changed over to 132/11kV transformation. The existing capacitor banks will be checked to determine there effectiveness in the new network arrangement. 12
Retief Substation 33kV to be phased out after Pine Street, Archbell and Crossways 33/11kV transformation has been changed over to 132/11kV transformation. Two new 132/11kV 40MVA transformers to be installed on two of the existing 132/33kV transformer plinths. One of the remaining two transformer bays will be converted to a cable feeder bay for the city grid 132kV 240MVA cable circuit to Archbell Substation. new 11kV switchroom to be built adjacent to the existing building to accommodate a new 22 panel switchboard. The existing control room will be reused. Installation of new 11kV switchgear Installation of new feeder Protection and control schemes Archbell Substation 33kV to be phased out. Two new 132/11kV 40MVA transformers to be installed New 132kV GIS switchroom to be constructed. New five panel GIS switchboard to be installed. Installation of new 11kV switchgear. Installation of new feeder Protection and control schemes.. 13
14 PROPOSED CITY CABLE GRID
Pine Street Substation 33kV to be phased out. Two new 132/11kV 40MVA transformers to be installed New 132kV GIS switchroom to be constructed. New Seven panel GIS switchboard to be installed. Prince Alfred Street Substation New 132kV GIS switchroom to be constructed. Two new 132/11kV 40MVA transformers to be installed New Six panel GIS switchboard to be installed. Woodburn Substation 33kV to be phased out. Two new 132/11kV 40MVA transformers to be installed The132kV line circuit which connects Eskom s Msunduzi to Retief Substation to be turned into a new Woodburn substation. new 11kV switchroom and control room to be built to accommodate a new 22 panel switchboard. Installation of new 11kV switchgear Installation of new feeder Protection and control schemes 15
Hesketh Substation 33kV to be phased out. Two new 132/11kV 40MVA transformers to be installed The132kV line circuit which connects Eskom s Mkondeni to Riverside Substation to be turned into Hesketh substation. Installation of new 11kV switchgear Installation of new feeder Protection and control schemes Bishopstowe 132kV Switching Substation Construction of eight 132kV line bays, two Eskom s Mersey feeders, two Northdale feeders, two Riverside feeders and two spare. Construction of new Control room and perimeter fencing. Installation of new feeder Protection and control schemes. Turn in of existing lines. Masons Mill Substation New 132kV GIS switchroom to be constructed. Two new 132/11kV 40MVA transformers to be installed New Seven panel GIS switchboard to be installed. Installation of new 11kV switchgear Installation of new feeder Protection and control schemes Decommissioning of the 88kV substation 16
17 PROPOSED CROSSWAYS 132kV CIRCUITS
Crossways Substation 33kV to be phased out. Two existing 132/11kV 30MVA transformers from Prince Alfred SS to be installed. Two new 132kV cable feeder bays to be installed. Installation of new 11kV switchgear Installation of new feeder Protection and control schemes Eastwood Substation Site and servitude to be verified. Two new 132/11kV 40MVA transformers to be installed The132kV line circuit which connects Bishopstowe to Riverside Substation to be turned into Eastwood substation. New switchroom, control room and perimeter fencing to be built. Installation of new 11kV switchgear Installation of new feeder Protection and control schemes 18
19 EASTWOOD SUBSTATION CUT-INN
City Cable Grid 33kV to be phased out. A 240MVA 132kV cable network to be installed through the City centre. This cable will connect the existing Retief Substation to Prince Alfred and will strengthen the 132kV network. The connection will consist of three major sections, Retief to Archbell, Archbell to Pine Street and Pine Street to Prince Alfred Street. Crossways Cable Circuits 33kV to be phased out. Two100MVA 132kV cable circuits will be installed from Pine Street to Crossways Substation. Circuits will connect the Crossways Substation to Pine Street and will in future be extended to Garlington Substation and interconnect to Bishopstowe Switching Substation. 132kV Overhead line Eastwood Cut-Ins- A new section of double circuit twin Wolf line must be constructed from a suitable tee-off point from the existing Bishopstowe to Riverside double circuit twin wolf line. Msunduzi-Riverside Cut-Ins- The existing section of double circuit single Wolf line of the old circuit that use to run from Riverside to Retief substations must be upgraded from Riverside Substation to the existing angle structure near the Msunduzi-Retief Circuit, to 200MVA capacity. 20
21 PROPOSED 132kV LINE CUT-INNS
New SCADA control Centre New control software upgrade and configuration will be required for each of the Primary substations. to be done in conjunction with the commissioning of the new protection schemes and substation gateways. The optical fibre communication cores will be laid with the primary cable circuits and line protection upgrades. The secondary fibre circuits will be laid with the 11kV reticulation network to the distribution switching substations as part of the Secondary Network Development Plan. Provision will be made in the system to expand the SCADA to incorporate the expansion to the Secondary Distribution Network. Smart Metering and Billing Data System This will be the subject of a detailed report to cover the new tariff requirements and structure Secondary 11kV distribution network The details of this work will be covered in the Secondary Network Development Plan 22
23 PROPOSED GARLINGTON SUBSTATION CUT-INN
24 Network Diagram
Identification and introduction of pilot site Msunduzi does not have an established asset management methodology or practice aligned to Smart Grids thinking, hence we intend using this project to address that gap by establishing required management practice and process. The back office is seen as the heart of the utility business as it is the central processing unit where management and control of the various value chains are integrated for better control and optimization of their individual benefits. 25
Asset Management Policy & Asset Register Msunduzi Municipality has an Asset Management Policy for the entire Municipality and is managed by the Procurement Department. The Asset Register is divided into two parts, namely the asset register itemized/technical information and the asset register financial. Electricity Technical Department do not have access to the asset register to enable them to view the electrical assets to conduct maintenance planning using the information available in the register. 26
Asset Management & Practice We know that effective Asset Management holds the key to any sustainable Electricity Business which will ensure a reliable Electricity Service, customer satisfaction and create shareholder value. Asset management also enables an organization to examine the need for and performance of assets and asset systems at different levels. Additionally. 27
Contin.it enables the application of analytical approaches towards managing an asset over the different stages within its life cycle (which can start with the conception of the need for the asset, through disposal & includes the managing of any potential post disposal liabilities). 28
Msunduzi does not have an established asset management methodology or practice aligned to Smart Grids thinking, hence we intend using this project to address the gap by establishing required management practice and process. The back office is seen as the heart of the utility business as it is the central processing unit where management and control of the value chains are integrated for better control and optimization of there individual benefits. 29
At Msunduzi, we intend to close these 2 gaps, establishing an asset management methodology and establishing a back-office to drive that methodology going forward. In this we will be ensuring that, the investment already made of more than R250 million is not gone to waste but the assets deployed are maintained in a cost effective manner that will yield not only reliable supply but also enhance the customer experience. 30
The collaboration with SANEDI and the municipality through the implementation of this project will leave such a legacy that doing business going forward will be a paradigm shift that will determine the success and sustainability of the organization. 31
Conclusion The vision for the Electricity Department at Msunduzi is simply to capitalize on the existing grid infrastructure and to move to a more sustanable business model, through enhanced grid/network visibility and improved asset management through technology deployment 32
Below is the methodology to the Project at Msunduzi, the approach is intergrated into the methodology. STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 33
LOGICAL STEPS STEP1 STEP 2 STEP 2a 34 DELIVERABLES Define goals and create vision document Define key grid assets to be monitored and determine intervention Define Back-office and IT system AREAS OF FOCUS Business values Strategy Policy Objective Asset information Risk Management and decision making Status assessment Requirements to remotely monitor assets. Design the asset information system Designed to support the AN process. Based on AM information model Compatible with existing systems (GIS,ERM) Integrated with maintenance inspection and planning Standardized but flexible Ease of use for asset engineers and maintenance crews Training facilities (IT and technical)
LOGICAL STEPS STEP 3 DELIVERABLES Purchase system and commission AREAS OF FOCUS Determine cost of systems and components and purchase them STEP 4 Organise process Structure Authorities Responsibilities In/Outsourcing Staff numbers and competence STEP 5 Implement process AM project based plans Documentation\into management Tools and facilities Staff development 35
THANK YOU THE END 36