![Failures on 400 kV Lines in Venezuela Highlighted Importance of Corona Rings on Composite Insulators - Failures on 400 kV Lines in Venezuela Highlighted Importance of Corona Rings on Composite Insulators -](https://www.inmr.com/wp-content/uploads/2016/11/Screen-Shot-2016-11-18-at-13.06.10.png)
Failures on 400 kV Lines in Venezuela Highlighted Importance of Corona Rings on Composite Insulators -
![Figure 1 from Electric field calculation and grading ring optimization for 1000 kV AC post porcelain insulator | Semantic Scholar Figure 1 from Electric field calculation and grading ring optimization for 1000 kV AC post porcelain insulator | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/18ef6080d57c6249a5a1a871abe23d28aeb22524/1-Figure1-1.png)
Figure 1 from Electric field calculation and grading ring optimization for 1000 kV AC post porcelain insulator | Semantic Scholar
![Figure 23 from Potential calculation and grading ring design for ceramic insulators in 1000 kV UHV substations | Semantic Scholar Figure 23 from Potential calculation and grading ring design for ceramic insulators in 1000 kV UHV substations | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/ef8cadac3aab60e3f99ddc7d5d61e7d2ebbcb821/9-Figure23-1.png)
Figure 23 from Potential calculation and grading ring design for ceramic insulators in 1000 kV UHV substations | Semantic Scholar
![PDF] Optimum Corona Ring Design for High Voltage Compact Transmission Lines Using Gaussian Process Model | Semantic Scholar PDF] Optimum Corona Ring Design for High Voltage Compact Transmission Lines Using Gaussian Process Model | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/828f2c28de0e7da9b83b761a708c6a4f17f29fe1/45-Figure4-1-1.png)