NDLI: Simplification and cost reduction of visual corona tests

Content Provider	IET Digital Library
Author	Riba, Jordi Roger Abomailek, Carlos Torrens, Pau Casals Capelli, Francesca
Abstract	Visual corona tests are useful to identify the critical corona points of different high-voltage components. Radio interference voltage and partial discharge measurements also allow detecting corona activity. However, these techniques require expensive screened laboratories, sophisticated instrumentation and usually do not provide the exact location of the discharges. Corona tests are often performed in external laboratories, where customers habitually have to face long waiting times. The tests in such laboratories must be totally planned beforehand, as they are habitually done by external engineers, so little information about the behaviour and possible modifications of the product is acquired by the customer. This study proposes a feasible solution to perform routine corona tests, while greatly reducing the voltage applied, laboratory size and requirements, testing times, and thus test costs. This study also detects the visual corona onset by means of a commercial digital camera, which allows locating the critical corona points, thus greatly decreasing the costs of the corona instrumentation, while maintaining the accuracy and sensitivity of the detection method. The methodology proposed in this study can be applied to many other high-voltage devices such as conductors, vibration dumpers, corona protections and different types of hardware and fittings for power lines and substations.
Starting Page	834
Ending Page	841
Page Count	8
ISSN	17518687
Volume Number	12
e-ISSN	17518695
Issue Number	Issue 4, Feb (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/12/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2017.0688
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-10-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Commercial Digital Camera Connector Corona Corona Activity Detection Corona Detection Instrumentation Cost Reduction Critical Corona Point Identification Dielectric Breakdown And Discharges Electric Connectors Gas Discharges High-voltage Component High-voltage Device Industrial Facilities Insulator Partial Discharge Measurement Power Line Supports Product Optimisation Production Facilities Production Facilities And Engineering Radio Frequency Interference Radio Interference Voltage Substation Connectors Substations Test Facilities Visual Corona Onset Detection Visual Corona Tests
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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Contribution of surface charges on high-voltage DC silicon rubber insulators to DC flashover performance

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