One of the phenomena associated with all energized electrical devices, including high-voltage transmission lines, is corona. The localized electric field near a conductor can be sufficiently concentrated to ionize air close to the conductors. This can result in a partial discharge of electrical energy called a corona discharge.
![Corona Ti thermal Imaging](http://www.thermalimaging.co.uk/wp-content/uploads/Corona-Ti-thermal-Imaging.png)
What is Corona?
– It is a phenomenon associated with all transmission lines. Under certain conditions, the localized electric field near energized components and conductors can produce a tiny electric discharge or corona that causes the surrounding air molecules to ionize, or undergo a slight localized change of electric charge.
– Corona occurs on all types of transmission lines, but it becomes more noticeable at higher voltages (345 kV and higher).
What’s The Fuss?
– Corona from conductors and hardware may cause audible noise and radio noise
– Audible noise from conductors may violate noise standards
– Radio noise from conductors may interfere with communications or navigation
– Loss may be significant when compared with resistive loss of conductors
– Can cause possible damage to polymeric insulators
![Corona](http://www.thermalimaging.co.uk/wp-content/uploads/Corona.png)
Use our WEBCOR online campaign management system to instantly view and manage your Partial Discharge problems along with other condition monitoring problems in one ‘easy to navigate’ dashboard.
![Corona Ti thermal imaging inspection](http://www.thermalimaging.co.uk/wp-content/uploads/Corona-Ti-thermal-imaging-inspection.png)
(function (n) {
var u = window.location.href;
var p = u.split("/")[0];
var t = n.createElement("script"), i;
t.type = "text/javascript";
t.async = !0;
t.src = p + "//dashboard.whoisvisiting.com/who.js";
i = n.getElementsByTagName("script")[0];
i.parentNode.insertBefore(t, i)
})(document);
var whoparam = whoparam || [];
whoparam.push(["AcNo", "07901074bde94bdda98b51a0455193a0"]);
whoparam.push(["SendHit", ""]
);