Elaboration on the standardized measuring process of instruments used in live-line work

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Dr. Németh Bálint
Department of Electric Power Engineering


Live line work (LLW) is a modern technological solution to provide high quality electricity supply service without interuption to millions of customers. Applying this practice decreases the number and/or duration of intermissions of current, should the intermission be due to a planned or unplanned (accidance) intervention.

Due to the metal connectors being charged while the technician is performing repairing work, there are strict insructions and regulations concerning preparative, operational and postoperational processes.

First I review the instructions of the LLW safety regulations emphasising how it touches up on every minor detail of the work process.

Then I discuss three techniques of LLW, the conditions of each technique, the roles and tasks of technicians involved in the work process, the insulating tools in use and regualtions concerning the condition of the equipment utilized. After discussing techniques I demonstrate financial benefits of LLW based on a specific technology.

Finally, to compare its properties to safety regulations, I chose and examined a insulation tool. I selected two types of insulating ropes that I tested in laboratory environment, thus I could compare the results of the measurements performed on the two different materials as well. After general description of the tool, I introduce safety regulations and expected measurement values concerning insulating ropes. As a result we developed measuring processes and arrangements satisfying safety regulations. Then I compared the results to safety regulations and evaluated the outcome.

It would be practical to simplify some phases of the method developed. Upon closing the thesis I seek to pose some proposals concerning this process.


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