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Utility Practice & Experience

PPC Insulators

Selective Application of EGLAs on Transmission Lines in Malaysia

Malaysia’s power system operates in a region of intense lightning activity that adversely impacts performance of certain lines operated by the country’s grid operator, Tenaga Nasional Berhad (TNB). Among the lines most seriously affected by lightning are... Read More

Research Provided Insight into Unexplained Line Outages

Pollution flashovers of insulator strings have historically been one of the main causes of line outages under normal operating conditions. Indeed, years ago this was a relatively common occurrence across many countries suffering from heavy industrial... Read More

Standards & Progress in Insulator Technology

Standards have great impact on any industry since quality of standards determines quality and stability of products and ultimately customer confidence in these products. As such, it is fair to state: “no standard – no business”. IEC TC 36, the Standards... Read More

Impact of Climate Change on Power Systems & Electrical Insulation: Experience in Italy

Heavy snow over the Italian Dolomites in December 2013 left tourists enduring an extended blackout in one of Europe’s most exclusive winter resorts. Then, in March 2015, central Italy was hit by a major storm with over a meter of snow combined with strong... Read More

Experience with Design & Erection of Insulated Cross-Arms

The Belgian transmission system is an integral part of the European Network of Transmission System Operators (ENSTO-E). It is therefore vital that the country’s TSO, Elia, makes provisions for increasing energy imports and exports. Another key driver is... Read More

Application of Composite Interphase Spacers to Prevent Conductor Galloping

Application of composite insulators on transmission lines has increased steadily due to their performance advantages as well as lower acquisition and life cycle costs. At the same time, these insulators have also offered solutions in other areas where ceramic... Read More

Materials Toward Development of Insulators of the Future

Among the goals of power systems these days is that a growing share of energy be supplied from renewable sources. At the same time, power systems have to become more controllable to optimize power flow and reduce losses. The classical power system must... Read More