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In order to schedule the choice of maintaining or refurbishing MV equipment, an electrical utility may study ageing effects on different pieces of such equipment. In this paper, the analysis is based on record of outages (MV power cuts) during several years where causes of outages are noticed (and ages of pieces of equipment are also known). Failure rate versus age estimation results are given for...
Technology of control command system (or instrumentation and control I&C equipment) has evolved dramatically during last 30 years from electromechanical relay, analog relay to digital relay. Then utilities have to maintain different type of devices. Risks linked to this fact are ageing effect on protection relays and technical life time of piece of equipment. After 20 years of use, manufacturers...
In the opening of the market, asset management for electrical equipment is a great stake for the CDF Group. This paper presents some aspects of the use of probabilistic methods to improve the asset management of electrical equipment. Probabilistic methods are used to answer to questions that regards aging and asset management of electrical equipment. The example in this paper concerns investment strategy...
EDF has a constant concern for offering a quality of voltage supply suited to the customer's needs, while controlling the costs of equipment installed on the network. In the context of the energy market deregulation in Europe, EDF wants to use its knowhow to develop new services to its industrial customers. The aim of this paper is to present an example of a statistical and reliability study that...
The aim of this paper is to present aspects of the maintenance policies of substations and electrical equipment, and experience feedback method in the EDF's distribution network (MV and LV) and the RTE's network (VHV, HV). EDF has tested reliability-centered maintenance (RCM), with a view to improving EDF maintenance policies and adapting them to the company's new goals of improving supply safety...
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