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ZAMBIAN DISTRIBUTION GRID CODE - erb.org.zm

ZAMBIAN DISTRIBUTION grid . code . MAY 2016. ACKNOWLEDGEMENTS. This is the first issue of the ZAMBIAN DISTRIBUTION grid code . The development of the DISTRIBUTION grid code has been accomplished by the extensive efforts of the Energy Regulation Board (ERB) and was subjected to broad technical and legal reviews by stakeholders in the ZAMBIAN Electricity Supply Industry (ESI). This DISTRIBUTION grid code , although uniquely ZAMBIAN , has drawn on the following internationally available grid codes and documents: a).

i ACKNOWLEDGEMENTS This is the first issue of the Zambian Distribution Grid Code. The development of the Distribution Grid Code has been accomplished by the extensive efforts of the Energy

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Transcription of ZAMBIAN DISTRIBUTION GRID CODE - erb.org.zm

1 ZAMBIAN DISTRIBUTION grid . code . MAY 2016. ACKNOWLEDGEMENTS. This is the first issue of the ZAMBIAN DISTRIBUTION grid code . The development of the DISTRIBUTION grid code has been accomplished by the extensive efforts of the Energy Regulation Board (ERB) and was subjected to broad technical and legal reviews by stakeholders in the ZAMBIAN Electricity Supply Industry (ESI). This DISTRIBUTION grid code , although uniquely ZAMBIAN , has drawn on the following internationally available grid codes and documents: a).

2 The South African Renewable Energy code b). The South African DISTRIBUTION code c). The Zimbabwe DISTRIBUTION code d). The Namibian Net Metering Rules e). The Zimbabwean Solar PV Integration code f). Guidelines for embedded generator connection to Australia Gas Light Company (ActewAGL)'s low voltage (LV) network g). Relevant ZAMBIAN Standards h). Germany Technical Guideline for Generating Plants (BDEW June 2008). connected to the Medium- Voltage Network The detailed development of the DISTRIBUTION grid code was done by a Drafting Team, which comprised the following ERB members of staff: Eng.

3 Yohane Mukabe Eng. Joseph Malama Eng. Richard Banda Eng. Steven Mwiinga Eng. Felix Chama Eng. Boyd Chilembo Eng. Eric Musama For enquiries, contact: The Energy Regulation Board Plot 9330, off Alick Nkhata Road Box 37631. Lusaka Zambia i FOREWORD. It is with great pleasure that I present the first issue of the Zambia DISTRIBUTION grid code ( DISTRIBUTION code ). The DISTRIBUTION code is designed to provide clear procedures for both planning and operational purposes to ensure efficient development, operation and maintenance of a co-ordinated and economical DISTRIBUTION system and also to promote grid integration of renewable energy technologies.

4 The DISTRIBUTION code seeks to avoid undue discrimination between DISTRIBUTION Network Service Providers (DNSPs) and other categories of participants. It is gratifying to note that the development of the DISTRIBUTION code has been accomplished by the extensive efforts of the Energy Regulation Board (ERB) and was subjected to review by key stakeholders in the ZAMBIAN Electricity Supply Industry (ESI). This collaboration demonstrated amongst the stakeholders during the development of the code is commendable, and it gives me great comfort that this will translate into the smooth implementation of this code .

5 The code is coming at an opportune time to provide a framework for addressing some of the challenges being faced in the DISTRIBUTION network arising from various developments in the ESI. Some of these developments have included the deployment of distributed generators connecting directly into the DISTRIBUTION network, integration of renewable energy based generation into the DISTRIBUTION network and net metering to allow domestic customers with renewable energy based generation to supply part of their generation into the DISTRIBUTION network.

6 The code is a live document and may, from time to time, change to reflect stages of development of the ESI and to comply with legislation and good industry practice. I am confident that the implementation of the DISTRIBUTION code will further complement the Government's efforts to ensure the provision of reliable and quality energy services to end- use customers. Professor Francis Davison Yamba VICE- BOARD CHAIRMAN. ii TABLE OF CONTENTS. i FOREWORD .. ii ACRONYMS AND ABBREVIATIONS .. ix DEFINITIONS.

7 Xi 1. ZAMBIAN Electricity Supply Industry .. 2. Industry 2. The DISTRIBUTION System .. 2. Purpose of DISTRIBUTION grid code .. 3. Objectives of the DISTRIBUTION grid code .. 3. Content of the DISTRIBUTION grid code .. 4. DISTRIBUTION Network Chapter .. 4. DISTRIBUTION System Operation Chapter .. 4. DISTRIBUTION Metering Chapter .. 4. DISTRIBUTION Tariff Chapter .. 4. DISTRIBUTION Info Exchange Chapter .. 5. grid Integration of Renewable Energy Based Power Plants .. 5. DISTRIBUTION Governance 5. 2. NETWORK CHAPTER.

8 6. Objectives .. 6. Scope of Application .. 6. DISTRIBUTION System Connection Process and Procedure .. 6. Connection Agreement .. 6. Application for Connection or Modification .. 7. Processing of Application .. 7. Submittals Prior to the Commissioning .. 8. Commissioning of Equipment and Physical Connection to the DISTRIBUTION System .. 8. Connection Agreement for modification of existing connections . 9. iii Conditions for Disconnection of Supply .. 9. Conditions for Reconnection of Supply after disconnection.

9 9. DISTRIBUTION Load Flow Studies .. 10. Responsibilities of the DNSPs .. 10. Responsibilities of customers and /or users .. 12. DISTRIBUTION System Technical 12. Protection requirements .. 12. Earthing Requirements for Substations .. 14. Quality of Supply .. 15. Load Power Factor .. 15. DISTRIBUTION Network Interruption Performance Indices .. 15. Losses in the DISTRIBUTION System .. 15. Equipment Requirements .. 16. Embedded Generators Connection Conditions .. 16. Responsibilities of Embedded Generators to DNSPs.

10 16. Responsibilities of DNSPs to the Embedded Generators .. 17. Provision of Planning Information .. 18. Point Of Connection Technical Requirements .. 18. Protection Requirement for Embedded Generators .. 19. Quality of Supply requirements .. 20. Telemetry .. 21. DISTRIBUTION System Planning and Development .. 21. Framework for DISTRIBUTION System Planning and Development 21. Network Investment Criteria .. 22. 3. SYSTEM OPERATING CHAPTER .. 27. Objective .. 27. Scope of Application .. 27. Operational Responsibilities of DNSPs.


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