Abstract
Standardization of the process of power line connector installation and proper die selection technique for compression connectors is essential for power system reliability improvements. This paper presents an attempt to identify good workman practices required for making proper power distribution line connections. This will be a guide in the assembly and preventive maintenance of efficient electrical connections for power distribution circuits. Data and experience gained through usage of power line connectors by Ceylon Electricity Board is the basis of this study. Properties of conductor metals and metal oxides illustrate the requirements of standardized methods of making connections. Requirements for the proper selection of connectors; the proper preparation of conductors; and the proper application of fusion, compression, and bolted connectors are identified. Standards available on power line connectors are given. Photographs of bad workman practices are included with explanations. Mathematical formulas are developed for calculating the correct die size for compression connectors. Performance identification of any type of connector installed in a power line is carried out by thermal imaging. Thermal images taken from a few installed connectors are included and a procedure for assessing connector performance is suggested.
Highlights
Power generated in remote stations is brought to load centers via the transmission network
The study has shown that pressure connections are the most suitable type for power line connections compared with the fusion connections due to their convenience, reliability and economy in the field of making electrical connections
The study has further shown that copper contacts are better compared with aluminium contacts
Summary
Power generated in remote stations is brought to load centers via the transmission network. The voltage is stepped down at the grid substations for distribution to the local area. Each grid substation supplies its local area through several distribution feeders. The intended purpose of this paper is to provide the user with the information necessary to make a decision on the selection of the correct connection method and procedure of making a connection in the power distribution system. This paper introduces various electrical connection points in the power distribution network where different types of connectors can be applied and their related conditions to consider when selecting and working with connectors. This research mainly focuses on providing a technical background for facilitating sound judgment when applying an appropriate way of connection suitable for a particular point in the power distribution network
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