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The goal of this abstract is to explain the methods and procedures developed by CME — Construção e Manutenção Electromecânica, SA to execute overhead LLW Stringing — with an intelligent flight done by UAV's — Unmanned Aerial Vehicles leading to significant cost benefits and improved security, in contrast to conventional systems (helicopters, industrial climbers.).
According to IEC 60050 definition, live working is “an activity in which a worker makes contact with energized parts or encroaches inside the live working zone with either parts of his or her body or with tools, devices or equipment”. Live working is a worldwide used maintenance and repair methodology in electricity systems. In other words, it is possible to perform maintenance and repair works on...
Following the implementation of the antigalloping devices for the 400 kV o/h lines with 2 subconductors per phase, as explained in our paper presented by the occasion of the ICOLIM 2014 in Budapest, a new antigalloping device of the same torsional damper and detuner pendulum type was created and already implemented on some of the 400 kV with 3 subconductors per phase in Romania, in 2015. The device...
This document presents the experimentation of the use of drones for medium voltage (MV) live work (LW). The aim is to improve safety within works in which mechanical forces are exerted on the live line.
This document presents the organisation of the low voltage (LV) and medium voltage (MV) live work (LW) at Enedis, and the differentiated management of the professionalism of the operators between these two voltage levels.
UTE started performing LW maintenance in Transmission Overhead lines in 1989 and in Distribution in 1997 through an international call of bids. This paper refers to the Distribution experience and it includes information about LW training programs and training centers for the Distribution division.
This paper will describe the differences between the old and new edition of the IEC 60895 standard, analyzing the significant aspects towards the field attenuation and the introduction of new accessories. It will be described more in detail the concept of “classes” which determines different values of electrical field attenuation and matching with accessories. The paper will also present some practical...
Facial masks are suitable devices to limit the exposure to the electric field of a highly delicate part of the human body, particularly in Live Line Working. A mapping of the electric field in the face region is carried out by means of a dielectric optical sensing device. A couple of technologies used for the production of transparent shields have been analyzed and compared: metallic meshes and thin...
In the field of high voltage live line maintenance RTE can rely on many methods for ordinary operations like replacing insulators, line hardware, or repairing damaged conductors. Nevertheless heavier maintenance is sometimes needed such as tower replacement. Therefore RTE has developed a new piece of equipment able to temporarily support the line while the tower is removed. This tool consists of a...
The condition of insulators on transmission and distribution power systems is of prime importance for the successful operation of a power grid. Particularly since a damaged or electrically deficient insulator(s) can lead to costly system outages, serious injury, or loss of life.
In the paper are described general changes and chronology of their implementation related to requirements for electrical insulating footwear and overshoes. They are based on new edition of EN 50321-1, which still is under development within WG5 TC 81 CLC.
RTE carries out live helicopter maintenance operations from between 63kV to 400kV. These operations are led by specialists from baskets suspended from a helicopter.
This paper will describe the laboratory organization that Terna Rete Italia S.p.A. had to adopt in order to perform periodical tests of the equipment used for Llive Line Works. Italian legislation provides that periodical tests shall be performed in laboratories accredited according to ISO/IEC 17025 Standard, therefore Terna Rete Italia organized a “Multi-site laboratory” so as to perform the tests...
One of the most interesting spheres which allow steady improvement of the quality of electricity supply service in the European Union and worldwide, but also in Poland, are the techniques and procedures to ensure reliable maintenance and repairs of the power network, power lines and installations and power equipment without the need to resort to power cuts.
Beside of typical assembly tools, insulated or insulating, dielectric and mechanical test are subject to all safety equipment made of elastomer and insulating stick (hot sticks) made of epoxy-glass tube. Authors has summarized the requirements of IEC and EN standards for equipment, tools and personal protective equipment and listed standards development for equipment used in Live Working method on...
This paper highlights the development and preparation process of the implementation of live working in Turkey; whilst focusing on contributing factors, undertaken operations and goals for the future.
Live work training is provided by training organisations approved by the Live Work Committee, which lays down the training content and methods by imposing a programme in line with each voltage level. These organisations receive approval for a 4-year term. The UOF is an Enedis in-house organisation approved for LW and MV live work training for Enedis employees.
Modern manufacturing and usage of advanced materials opened a possibility to a new approach in designing Live Working IEC/CEI 60900 hand tools, such us: ring spanners, socket wrenches, screwdrivers, pliers. According to CEI/IEC 60900 standard, there are two types of tools: insulated, made of conductive material fully or partially covered by insulating material and insulating, made totally or essentially...
The purpose of this paper is to compare the quality management and safety aspects within the Live working (LW) framework. The study draws upon study carried out among the Slovenian electrical distribution and international study which was carried out among Slovenian and foreign LW experts. The results of the first study suggested that health and safety aspects of LW are vital for achieving efficiency...
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