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Communications, Data Hardening, and the Smart Grid

The SmartGrid continues to expand and gather new functions as needs expand. Automated metering, relay operation, RTU operation, electric management systems, remedial action schemes, SCADA, field reclosers, Synchrophasors, remote access, weather, and earthquake monitoring and future needs still yet...

FERC Complaint Targets Duke, PJM Transmission Planning

A coalition of large energy consumers and ratepayer advocates has filed a complaint with the Federal Energy Regulatory Commission (FERC), urging the agency to prohibit transmission owners from independently planning "local" transmission projects exceeding 100 kilovolts (kV). The coalition argues...

Zensol new instrument for OLTC testing

According to CIGRE A2.34, the dynamic resistance measurement or DRM (OFFLINE) is a test that offers diagnostics for several diverter or selector switch malfunctions such as: contact problems, broken springs, broken transition resistors, poor contact pressure, inadequate transition time, momentary...

Rugged Tablets for Utility Fleet Vehicles

In reports analyzing the response of power utilities to incidents such as Hurricane Sandy, or the more recent ice storms on the east coast, one item has been remarkably consistent—the conclusion that communication requires improvements. The concern is not hard to fathom. Knowing accurately when...

The Overlooked Benefits of High-Performance Powerline Conductors

Background:For over 100 years Transmission Engineers have relied on aluminum conductors strengthened by steel core wires, commonly referred to as ACSR conductors. These conductors offered reasonable performance and durability and were capable of operating at temperatures up to 93° C. Above this...

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Tangent Test Setup

Fiberglass Reinforced Polymer Crossarms 5th Percentile Design Strength Value Development

Introduction

In 2007, the National Electric Safety Code (NESC) standards committee adopted composite poles, crossarms, and braces into the code. This action was significant in mandating the composite electrical structures manufacturing industry to publish their design strength values to a 5% Lower Exclusion Limit (LEL). We published a white paper that creates transparency for the utility engineer, in that it describes the test methods, test setup, statistical calculations and relevant standards utilized to generate 5th...

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