Draft EG-0 power system earthing guide part 1: management principles, July 2009

This guide addresses the high level aspects of policy associated with power system
earthing. It provides a framework for managing earthing related risk associated with
electrical power systems to meet societally acceptable levels. This framework
provides principles for the design, installation, testing and maintenance of the
earthing systems associated with power system assets on a.c. systems with nominal
voltages up to EHV. A central part of this framework is a probabilistic derivation of
allowable voltage criteria and exposure under fault conditions. It is intended for use
by electrical utilities and HV asset owners, operators and customers, specifically
regarding:

• major substations
• distribution networks
• transmission lines
• power stations, and
• large industrial systems.

DRAFT EG-0 Power System Earthing Guide Part 1: Management Principles, July 2009

MCE discussion paper: harmonisation of energy supply industry technical and safety regulation

Energy supply networks are characterised by extensive assets throughout the public domain such as pipelines, powerlines, substations, gate and compressor stations, and underground cables. As a consequence, the expectation is that the community safety risks as well as employee safety risks in an energy supply network need to be identified and managed.

Energy network operators and their employees are best placed to design, implement and manage an appropriate and effective safety system.

• ENA submision— MCE Discussion Paper: Harmonisation of Energy Supply Industry Technical and Safety Regulation
• Attachment 1—ENA submission on ESI Safety Regulation—Policy for a national energy safety framework in Australia
• Attachment 2—ENA submission on ESI Safety Regulation—ENA proposed national framework for electricity safety
• Attachment 3—ENA Submission to MCE—Energy safety legislation—December 2008
• Attachment 4—NSW Electricity Supply (Safety and Network Management) Regulation 2008

Electricity Technical Regulatory Committee

The ETRC provides policy advice to ENA on electricity network safety/technical industry guidelines and standards.

The priority objective is to promote network safety and economic efficiency through a nationally consistent approach to the development and promotion of industry guidelines and Australian Standards.