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RSA Distribution Network Code Ver 6

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RSA Distribution Network Code Ver 6 South African Distribution Code Network Code Version 6.0 July 2014 This document is approved by the National Energy Regulator of South Africa (NERSA) Issued by: RSA Grid Code Secretariat Contact: Mr. Bernard Magoro Eskom Transmission Division P.O Box 103, Germiston 1400 Tell: +27 (0)11 871 2774 Fax: +27 (0)86 663 8418 Email: [email protected] 2 SA Distribution Code - Version 6 Network Code July 2014 TABLE OF CONTENTS 1. OBJECTIVES ............................................................................................................................................ 4 2. SCOPE OF APPLICATION ...................................................................................................................... 4 3. DISTRIBUTION SYSTEM CONNECTION PROCESS AND PROCEDURES.......................................... 4 3.1 CONNECTION ARRANGEMENTS ............................................................................................................... 4 3.2 APPLICATION FOR CONNECTION .............................................................................................................. 5 4. RESPONSIBILITIES OF THE DISTRIBUTORS ....................................................................................... 5 5. RESPONSIBILITIES OF CUSTOMERS AND /OR USERS ..................................................................... 6 6. DISTRIBUTION SYSTEM TECHNICAL REQUIREMENTS ..................................................................... 7 6.1 PROTECTION REQUIREMENTS ................................................................................................................. 7 6.2 QUALITY OF SUPPLY ............................................................................................................................... 7 6.3 LOAD POWER FACTOR ........................................................................................................................... 8 6.4 EARTHING REQUIREMENTS ..................................................................................................................... 8 6.5 DISTRIBUTION NETWORK INTERRUPTION PERFORMANCE INDICES ............................................................. 8 6.6 LOSSES IN THE DISTRIBUTION SYSTEM .................................................................................................... 9 6.7 EQUIPMENT REQUIREMENTS ................................................................................................................... 9 7. DISTRIBUTION SYSTEM PLANNING AND DEVELOPMENT ................................................................ 9 7.1 FRAMEWORK FOR DISTRIBUTION NETWORK PLANNING AND DEVELOPMENT .............................................. 9 7.2 NETWORK INVESTMENT CRITERIA .........................................................................................................10 7.3 EXCLUDED SERVICES ...........................................................................................................................13 8. EMBEDDED GENERATORS CONNECTION CONDITIONS ................................................................ 14 8.1 RESPONSIBILITIES OF EMBEDDED GENERATORS TO DISTRIBUTORS ........................................................14 8.2 RESPONSIBILITIES OF DISTRIBUTORS TO THE EMBEDDED GENERATORS .................................................14 8.3 PROVISION OF PLANNING INFORMATION ................................................................................................14 8.4 CONNECTION POINT TECHNICAL REQUIREMENTS ...................................................................................15 8.5 TELEMETRY .........................................................................................................................................17 9. POWER STATION SUPPLIES ............................................................................................................... 17 APPENDIX A: DISTRIBUTION SERVICE CUSTOMER APPLICATION FORM ........................................ 18 10. APPENDIX B: EMBEDDED GENERATOR CONNECTION APPLICATION FORM ............................. 22 3 SA Distribution Code - Version 6 Network Code July 2014 1. Objectives (1) To set the basic rules of connecting to the Distribution System . (2) To ensure that all users of the Distribution System are treated in a non-discriminatory manner. (3) To specify the technical requirements to ensure the safety and reliability of the Distribution System . 2. Scope of Application (1) The Distribution Network Code shall apply to all users of the Distribution System including : (a) Distributors (b) Embedded Generators (c) End-use customers (d) Retailers (e) Generators (f) Any other entities with equipment connected to the Distribution System 3. Distribution System Connection Process and Procedures 3.1 Connection Arrangements (1) Customers seeking a new connection to the Distribution System shall lodge an application to connect to the Distribution System with the relevant Distributor. A sample application form is attached in appendix A. Each Distributor shall develop its own application form. (2) Customers applying for MV and HV supplies should provide additional information on fluctuating loads, capacitor banks and reactors that could affect the performance of the Distribution System . (3) Upon receiving the application for connection the Distributors shall comply with all other requirements relevant to the connection process specified in this code. 4 SA Distribution Code - Version 6 Network Code July 2014 3.2 Application for Connection (1) Upon receipt of the application for connection to the Distribution System , the Distributor shall advise whether the applicant can be connected to the existing system and / or what technical improvements are required to enable the new connection. (2) The Distributor shall provide an offer to connect and if accepted by the customer, both parties shall enter into a connection agreement. (3) The connection agreement shall include information such as project planning data, inspection, testing and commissioning programs, electrical diagrams and any other information the Distributor may deem necessary to proceed with the processing of the application for connection. (4) If the application for connection has been declined, the Distributor shall advise the customer on the alternative options available for connection to make the connection successful. (5) If the customer and the Distributor cannot reach an agreement on the proposed connection, a dispute resolution process as outlined in the Governance Code will be followed by the parties . (6) Subject to clauses 3.2 (2) and 3.2 (3), the Distributor shall prepare an offer to connect to the customer within the period specified in NRS 047, unless otherwise agreed by the participants . (7) The offer to connect supplied by the Distributor shall be fair and reasonable and may contain alternative options available to the customer . (8) Any negotiations taking place between the parties shall be conducted in good faith and any information provided shall be treated in a confidential manner by both parties. 4. Responsibilities of the Distributors (1) The Distributor shall make capacity available on its networks and provide open and non-discriminatory access for the use of this capacity to all customers including Embedded Generators . In exchange for this service, the Distributor is entitled to a fair compensation through electricity tariffs as described the Tariff Code. (2) Each Distributor shall make available to the customers the Customer Connection Information Guide. This guide shall cover as a minimum: a) Process to follow when applying for supply at the specific Distributor b) Information requirements of the Distributor from the customer to effect an appropriate connection. c) Process and related timeframes which follow the application. (3) The Distributor shall respond to the customer’s request to connect within the period specified in NRS047 . (4) The Distributor shall enter into a connection agreement with the customer prior to the actual connection to the Distribution System . 5 SA Distribution Code - Version 6 Network Code July 2014 (5) The Distributor shall advise potential customer of the expected reliability of its network upon request. (6) The Distributor may participate in the final inspection and testing of customer equipment and facilities to be connected to its network. (7) The Distributor shall maintain its DS in accordance with good industry practice and NRS 082 . (8) The Distributor shall be responsible for the planning, design and engineering specifications of the work required for the distribution system connection or expansion. (9) The Distributor shall conduct Distribution System Impact Assessment studies to evaluate the impact of additional loads or embedded generator or major modification to the Distribution System. The assessment conducted shall include the following where relevant: (a) Voltage impact studies (b) Impact on network loading (c) Fault currents (d) Coordination of protection systems (e) Impact on the system’s quality of supply (f) Strengthening of the system (10) The Distributor shall refuse to connect any facility which the Distribution Impact Assessment studies indicate will have a deleterious effect, exceeding the parameters laid down in the NRS 048 and the NERSA Power Quality Directive , when connected to the network. (11) The Distributor may request the customer to submit design information, drawings or other relevant information to the Distributor if the Distributor believes any proposed installation
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