Wildlife Protective Devices for Arresters

August 11, 2018 • Arresters, ARTICLE ARCHIVEComments Off on Wildlife Protective Devices for Arresters

The term wildlife protective device is relatively new to the power industry and refers to any device used on the network to reduce outages due to the impact of wildlife. Other terms sometimes used to describe these devices include animal guards, bird guards, bird deterrents, to name a few. This INMR article from 2010, contributed ...

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Protecting Power Plants Against Lightning

August 11, 2018 • Arresters, ARTICLE ARCHIVE

Lightning protection is usually associated mainly with distribution networks or transmission lines and substations. However, another area in the electricity supply paradigm where application of arresters needs to be considered are relatively small power...

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Mitigating Lead Stresses on Line Arresters

August 4, 2018 • Arresters, ARTICLE ARCHIVE

Transmission line surge arresters (TLSAs) are applied on overhead lines to improve outage performance and, particularly in the case of EHV, also to limit the magnitude of switching overvoltages. There are two basic types: externally gapped line arresters...

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Arrester − Transformer Separation Distance in Substations

July 28, 2018 • Arresters, ARTICLE ARCHIVE

How far from a transformer can arresters be located yet still ensure an adequate margin of protection? The answer is not so simple and requires some explanation. One rule of thumb is “locate the arrester as close to the transformer bushing as possible”....

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Benefits Justify Greater Use of Transmission Line Surge Arresters

July 21, 2018 • Arresters, ARTICLE ARCHIVE

Application of gapped (EGLAs) or non-gapped (NGLAs) transmission line arresters offers perhaps the best opportunity for power engineers to improve system reliability. However, the real value of using these TLSAs transcends this one objective. There are a good...

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Utility Reduced Lightning Outages with Line Arrester Investment Program

July 7, 2018 • Arresters, ARTICLE ARCHIVE

The urban area of Shenzhen is China’s first and perhaps still most visible economic success story after the country opened itself to the outside world during the early 1980s. Once little more than a sleepy fishing village across the strait from bustling...

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Identifying Quality Surge Arresters

June 16, 2018 • Arresters, ARTICLE ARCHIVE

Power system engineers all face a similar dilemma at one time or other when trying to identify which product offers the quality they require – especially in today’s global market with its many competing suppliers. Yet making the right decision can prove...

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Line Arresters Mitigate Ground Potential Rise on Towers & Improve Electricity Quality

June 9, 2018 • Arresters, ARTICLE ARCHIVE

The 1960s to 1970s saw rapid development of the French power system, with erection of many HV overhead lines and substations located mainly in the countryside. However, as towns expanded since the 1980s, many houses, factories, shopping malls and recreation...

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