Power-quality: utilities begin to set up monitoring networks

Article Abstract:

Electric utilities such as Colorado Springs Utilities and Arizona Public Service have installed networks in anticipation of power quality problems. The networks are used to carry out transient and harmonic analyses as well as measure operating parameters such as demand and power factor.

Cover Story, Arizona Public Service Co., Colorado Springs Utilities

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Gate-turn-off thyristors provide new level of power-flow control

Article Abstract:

The Tennessee Valley Authority's Sullivan station is the site of the first prototype installation of Westinghouse Science and Technology Center's Statcom static compensator. The device employs gate-turn-off thyristors instead of capacitor or reactor banks to control electric power flow.

Usage, United States. Tennessee Valley Authority, Thyristors

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Map board built with replaceable mosaic tiles

Article Abstract:

New England Power Exchange has installed a map board for its control center in Holyoke, MA. The mosaic map board system can be easily adjusted to meet transmission system standards.

New England Power Co.

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