TECHNICAL RULES - Western Power

1 TECHNICAL RULES 1 December 2016. Revision 3. IMPORTANT NOTE: This document is subject to amendment (amendments must be made in accordance with the Electricity Networks Access Code 2004). The latest approved version of the TECHNICAL RULES (and details of any proposed amendments) are available from the Economic Regulation Authority: RULES PREFACE. The Electricity Networks Corporation, trading as Western Power , was established on 1 April 2006 by the Electricity Corporations Act (2005) (WA). Western Power is required to provide access to capacity in its electricity transmission and distribution systems in accordance with the Electricity Networks Access Code 2004 (WA) (Access Code).

2 Chapter 12 of the Access Code fully describes the context, approval, development and application of TECHNICAL RULES for covered and non-covered networks. As such, the Economic Regulation Authority (Authority) is required to approve and publish TECHNICAL RULES ( RULES ) for covered and non-covered networks in coordination with Network Service Providers (NSPs). These RULES detail the TECHNICAL requirements to be met by: 1) Western Power and 2) by Users who connect facilities to the transmission and distribution transmission and distribution systems which make up the Western Power Network (WPN).

3 Prospective Users or existing Users who wish to connect facilities (or modify existing connections) to the transmission and distribution systems must first submit an access application to Western Power in accordance with the Access Code. Amendments to this document, and variations or exemptions to RULES requirements granted to Users and or NSPs, can only be made in accordance with the Access Code. 1 DECEMBER 2016, Revision 3. This revision of the TECHNICAL RULES contains amendments approved by the Authority decision of 9. November 2016. That decision relates to amendments proposed by Western Power in March and April 2016, and the approved amendments apply from 1 December 2016.

4 The decision, approved changes, and further details about the decision made are available from the Authority website. Revision 3 date 17 January, 2017 (see amendments and revisions table p. 169). EDM 40546182 i TECHNICAL RULES FOR THE SOUTH WEST INTERCONNECTED NETWORK. TABLE OF CONTENTS. 1. GENERAL .. 1. INTRODUCTION .. 1. AUTHORISATION .. 1. APPLICATION .. 2. COMMENCEMENT .. 2. 3. THE NETWORK SERVICE PROVIDER AND USERS TO ACT REASONABLY .. 3. DISPUTE RESOLUTION .. 3. OBLIGATIONS .. 3. VARIATIONS AND EXEMPTIONS FROM THE RULES .. 4. 2. TRANSMISSION AND DISTRIBUTION SYSTEM PERFORMANCE AND PLANNING CRITERIA.

5 6. INTRODUCTION .. 6. Power SYSTEM PERFORMANCE STANDARDS .. 6. OBLIGATIONS OF NETWORK SERVICE PROVIDER IN RELATION TO Power SYSTEM PERFORMANCE.. 13. LOAD SHEDDING FACILITIES .. 20. TRANSMISSION AND DISTRIBUTION SYSTEM PLANNING CRITERIA .. 20. DISTRIBUTION DESIGN CRITERIA .. 28. TRANSMISSION AND DISTRIBUTION SYSTEM DESIGN AND CONSTRUCTION 28. DISTRIBUTION CONDUCTOR OR CABLE SELECTION .. 29. TRANSMISSION AND DISTRIBUTION SYSTEM PROTECTION .. 29. 3. TECHNICAL REQUIREMENTS OF USER FACILITIES .. 35. INTRODUCTION .. 35. REQUIREMENTS FOR ALL USERS .. 35. REQUIREMENTS FOR CONNECTION OF GENERATING UNITS.

6 38. REQUIREMENTS FOR CONNECTION OF 58. USER'S PROTECTION REQUIREMENTS .. 63. REQUIREMENTS FOR CONNECTION OF SMALL GENERATING UNITS TO THE DISTRIBUTION NETWORK.. 66. REQUIREMENTS FOR CONNECTION OF ENERGY SYSTEMS TO THE LOW VOLTAGE DISTRIBUTION. SYSTEM VIA INVERTERS .. 75. 4. INSPECTION, TESTING, COMMISSIONING, DISCONNECTION AND RECONNECTION .. 81. INSPECTION AND TESTING .. 81. COMMISSIONING OF USER'S EQUIPMENT .. 91. DISCONNECTION AND RECONNECTION .. 95. 5. TRANSMISSION AND DISTRIBUTION SYSTEM OPERATION AND COORDINATION .. 99. APPLICATION .. 99. INTRODUCTION .. 99. Power SYSTEM OPERATION CO-ORDINATION RESPONSIBILITIES AND OBLIGATIONS.

7 99. CONTROL OF TRANSMISSION SYSTEM VOLTAGES .. 101. PROTECTION OF Power SYSTEM EQUIPMENT .. 102. Power SYSTEM STABILITY CO-ORDINATION .. 103. Power SYSTEM SECURITY OPERATION AND CO-ORDINATION .. 104. OPERATIONS AND MAINTENANCE PLANNING .. 105. Power SYSTEM OPERATING PROCEDURES .. 106. Power SYSTEM OPERATION SUPPORT .. 107. NOMENCLATURE STANDARDS .. 108. EDM 40546182 ii TECHNICAL RULES FOR THE SOUTH WEST INTERCONNECTED NETWORK. TABLE OF CONTENTS. ATTACHMENT 1 GLOSSARY .. 109. ATTACHMENT 2 125. ATTACHMENT 3 SCHEDULES OF TECHNICAL DETAILS IN SUPPORT OF CONNECTION APPLICATIONS.

8 126. ATTACHMENT 4 LARGE GENERATING UNIT DESIGN DATA .. 128. ATTACHMENT 5 SUBMISSION REQUIREMENTS FOR ELECTRICAL PLANT PROTECTION .. 139. ATTACHMENT 6 LARGE GENERATING UNIT SETTING 141. ATTACHMENT 7 TRANSMISSION SYSTEM AND EQUIPMENT TECHNICAL DATA OF EQUIPMENT AT OR NEAR. CONNECTION POINT .. 142. ATTACHMENT 8 TRANSMISSION SYSTEM EQUIPMENT AND APPARATUS SETTING 145. ATTACHMENT 9 LOAD CHARACTERISTICS AT CONNECTION POINT .. 147. ATTACHMENT 10 DISTRIBUTION SYSTEM CONNECTED GENERATORS UP TO 10 MW (EXCEPT INVERTOR-CONNECTED. GENERATORS UP TO 30 KVA) .. 148. ATTACHMENT 11 TEST SCHEDULE FOR SPECIFIC PERFORMANCE VERIFICATION AND MODEL VALIDATION.

9 155. ATTACHMENT 12 TESTING AND COMMISSIONING OF SMALL Power STATIONS CONNECTED TO THE DISTRIBUTION. SYSTEM .. 165. RECORD OF AMENDMENTS .. 169. EDM 40546182 iii TECHNICAL RULES FOR THE SOUTH WEST INTERCONNECTED NETWORK. SECTION 1 - GENERAL. 1. GENERAL. INTRODUCTION. (a) This section 1 defines the scope of the RULES both as to their content and their application. It provides RULES of interpretation and refers to the dispute resolution process. It establishes the obligations of all parties and defines the methodology for variations, exemptions and amendments to these RULES .

10 (b) The objectives of these RULES are that they: are reasonable;. do not impose inappropriate barriers to entry to a market;. are consistent with good electricity industry practice; and are consistent with relevant written laws and statutory instruments. AUTHORISATION. These RULES are made under chapter 12 of the Access Code. They set out: (a) the required performance standards for service quality in relation to the Power system;. (b) the TECHNICAL requirements for the design or operation of equipment connected to the transmission and distribution systems;. (c) the requirements for the operation of the transmission and distribution systems (including the operation of the transmission and distribution systems in emergency situations or where there is a possibility of a person suffering injury but excluding the operation of those parts of the transmission system under the control of System Management acting in accordance with the Market RULES ).