RTE and live substation work at powerlink queensland

Abstract

This presentation shows how RTE introduced Live Work (LW) within Powerlink substations in 2001. One measure of performance of a transmission network resides with the reliability of both substation and line assets. LW on line assets is a mature practice that network owners have invested in to minimise interruptions to critical circuits. RTE's LW practices on substation plant provide a holistic approach to reliability and availability across the entire transmission network of Powerlink. RTE's approach for LW in Substations met Powerlink's requirements with regard to risk analysis as it uses a specific analysis for each task and environment. Performing Live Work tasks in a safe manner is dependent on using suitable means and tools and applying both, meeting general safety regulations and specific Live Working Conditions (LWC). LW Hotstick and Barehand methods have been used safely in France for 50 years. The LWC were drawn up by RTE (SERECT; Service dedicated since 1962) which develops and markets specific tools according to the warranted characteristics presented in their technical sheets. In France, the annual activity in HV LW represents, on average, 160,000 hours of work, or more specifically 85,000 hours in substations, and 75,000 hours on overhead lines. There are: (1)21 LW Overhead Lines teams and 165 linesmen, including 72 for Helicopter LW, (2)19 LW Substations teams and 142 operators. The consistent framework of areas for LW interventions defines the criteria for carrying out on-site work (strategic facilities, busbars... ). RTE has perfected a methodology which is unique and can be adapted to all countries. This method begins with an in-depth analysis of the client's needs and ends with operational monitoring of the new team(s). The aspects examined are: the management, activities carried out in "dead work" conditions, operational rules and the protection system. The LWC and the training are then adapted to the country's regulations. The tools sold, are developed and warranted by SERECT in accordance with the relevant lEe. All of these tools are then subjected to qualification tests in SERECT's LW laboratory. In addition to this, agreements can also be established to provide assistance to the teams which have been trained. This paper is split in three parts respectively presented by RTE SERECT for the story of LW in France, RTE International for the transfer of knowledge and methodology and Powerlink for the feedback and results assessment.