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MSZ CLC/TR 50555:2011
Kimaradási mutatók
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Interruption indexes
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This Technical Report provides guidance on how to calculate continuity of supply indices. These recommended indices are more particularly given for European benchmarking of distribution network performance. For transmission network performance, more representative indices ^2)ˇ may be used. It presents – an overview of practices in Europe on long and short interruptions, – definition of physical interruptions in a harmonized way, – philosophy and criteria for recommending indices, – a suggested common approach to continuity indices. The fact that the networks in different parts of any particular country will be subject to different conditions (e.g. weather and customer density) mean that it is not viable to apply common performance standards to all networks within any one country or any group of countries without making these targets so weak that there is a good prospect of them being achieved in all areas. The present situation where national regulators set performance targets within their own countries is widely regarded as being the most effective mechanism for achieving optimal socio-economic performance. For these reasons this Technical Report does not provide common targets for the number and duration of interruptions that should not be exceeded. This Technical Report is designed to be a first step towards benchmarking the interruption performance of European countries. Rules on the aggregation of interruptions, in particular short interruptions, have not been considered in this Technical Report, however it is recognised that it might be necessary to describe aggregation rules in a second version of the Technical Report. 1.3 Continuity indices – Needs and applications Performance indices in general are important tools in decision making for transmission and distribution system asset management. Such indices can be used to translate issues, which might be rather vaguely expressed, into formalized parameters to be used in decision-making. As the reliability of the power system is a key element in power system management, continuity indices are useful to translate objectives such as • to maximize power system reliability and • to provide our customers with a supply that has the minimum number of interruptions. into more formalized objectives and targets aimed to support asset management and stakeholder communication. In power system asset management, decisions must be taken at different organizational levels within companies. Figure 1 illustrates the main decision levels as well as the most important stakeholders that may influence decisions at different levels. Ábra The stakeholders set the general requirements, for the business, that are further translated into internal business values and criteria. For example, compliance with the rules and regulations concerning continuity of supply are strategic criteria important for the utilities, authorities and regulators. Obtaining a sufficient profit or return on the assets is an important criterion for company owners while low cost and high reliability of supply are requirements of the customers. In order to be able to take into consideration all continuity aspects from different stakeholder perspectives, continuity indices are needed. Continuity indices have several applications: a) they might be used to measure overall developments and trends; b) they might be used in benchmarking to identify best practices and learn from others; c) they might be included in planning objectives and/or planning restrictions; d) they might be used in contractual arrangements; e) they might be used by regulatory authorities; f) they might be used in stakeholder communication. The list above is rather general and covers company levels, national issues and international issues. As this Technical Report focuses on the international level (European issues), the main applications and criteria for recommending indices are given in Clause 5.
29.240.01 Energiaátviteli és -elosztó hálózatok általában
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idt CLC/TR 50555:2010; idt CLC/TR 50555:2010/AC:2011
2020/08: Helyesbítés
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