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Utilities often address distribution circuit performance by categorizing circuits as "Worst Performing" and then implementing circuit rebuilds to overcome operational issues. New analysis technologies that use predictive maintenance or conditions-based analytics guide maintenance personnel to specific, pin-point actions minimizing maintenance costs and improving customer service. This paper...
Since the early 1950s electric utilities have installed millions of miles of low-voltage underground cables to improve the reliability and resilience of secondary power distribution. Early cable technology included butyl rubber insulated conductors and paper insulated lead coated cables. Over the decades, age and heat have degraded the insulation, leading to catastrophic failures and underground fires...
Predictive maintenance is a proven technique to lower operating costs and improve system performance. Capturing and assessing the condition of the transmission and distribution grid enables predictive maintenance, but can be expensive and challenging. New technologies applied to grid surveys using advanced RF emission and Ultrasonic Acoustical emission detection and discrimination provides rapid assessment...
The electric grid is protected from lightning damage by surge arresters. Surge arresters are sacrificial elements that must be replaced to maintain lighting protection once they are damaged. In a survey of the U.S., it has been found that the highest population of damaged surge arresters is in the region of highest lightning density. Samples of surge arresters that have been identified as damaged...
About 30 percent of all overhead power distribution outages are caused by failing electrical equipment. Arc and partial-arc sources predict an eventual outage. Replacing failing equipment reduces all reliability index figures. The novel sensing device discussed accurately determines the Global Positioning System (GPS) location of an arc source from moving vehicles. It can be called an outage-avoidance...
About 30 percent of all overhead power distribution outages are caused by failing electrical equipment. Arc and partial-arc sources predict an eventual outage. Replacing failing equipment reduces all reliability index figures. The novel sensing device discussed accurately determines the Global Positioning System (GPS) location of an arc source from moving vehicles. It can be called an outage-avoidance...
About 30 percent of all overhead power distribution outages are caused by failing electrical equipment, e.g., surge arresters, cutouts, insulators, wires, and grounding. Failing equipment can be located and scheduled for removal prior to an outage. Replacing failing equipment reduces all reliability index figures. Equipment that was identified by an Outage-Avoidance System as an electromagnetic (EM)...
About 30 percent of all overhead power distribution outages are caused by failing electrical equipment, e.g., surge arresters, cutouts, insulators, wires, grounding, etc. Failing equipment can be located and scheduled for removal prior to an outage. Replacing failing equipment reduces all reliability index figures.
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