NDLI: Feasibility analysis of reduced-scale visual corona tests in high-voltage laboratories

Content Provider	IET Digital Library
Author	Abomailek, Carlos Riba, Jordi Roger Torrens, Pau Casals
Abstract	Corona is a critical effect that must be considered during the design and optimisation stages of high-voltage hardware such as substation connectors, since due to the harmful effects, corona threats power systems reliability. Visual corona tests allow detecting and identifying the critical corona points on the surface of substation connectors, so corrective actions can be applied for product optimisation. This article focuses on reduced-scale (RS) visual corona tests intended to verify and optimise the behaviour of such high-voltage hardware. RS visual corona tests allow reducing the voltage to be applied, laboratory size, instrumentation requirements, assembly, and test times, and finally the overall costs of the tests compared to standard corona tests carried out in large-size high-voltage laboratories. A hybrid approach combining experimental tests and finite element method (FEM) simulations is presented, which allows obtaining the equivalent visual corona onset voltage between RS and full-scale tests. Although the article focuses on the analysis of aluminium substation connectors, the proposed approach can be applied to many other hardware intended for high-voltage applications.
Starting Page	2543
Ending Page	2549
Page Count	7
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 12, Jun (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5756
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-05-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Aluminium Substation Connectors Connector Corona Critical Corona Points Design Stage Electric Connectors Equivalent Visual Corona Onset Voltage Experimental Tests Feasibility Analysis FEM Simulations Finite Element Analysis Finite Element Method Simulations Full-scale Tests Gaseous Insulation, Breakdown And Discharges Harmful Effect High-voltage Application High-voltage Hardware Instrumentation Requirements Insulator Laboratory Size Large-size High-voltage Laboratories Optimisation Optimisation Stage Optimisation Technique Power Line Supports Power System Reliability Product Optimisation Reduced-scale Visual Corona Tests Reliability RS Visual Corona Tests Standard Corona Tests Substations Test Times
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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