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Power transmission line monitoring system

  • US 5,235,861 A
  • Filed: 05/03/1991
  • Issued: 08/17/1993
  • Est. Priority Date: 05/03/1991
  • Status: Expired due to Term
First Claim
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1. A system for measuring the sag of an overhead power transmission power line comprising:

  • a power transmission line section having two terminal ends;

    two section terminal transmission towers;

    strain insulator means to secure each terminal end of the power line section to a respective section transmission tower;

    intermediate transmission towers spaced in a line between the terminal towers;

    suspension insulator means to secure intermediate points of the power transmission line section to respective intermediate transmission towers;

    said suspension insulator means to permit longitudinal movement of the power line;

    tension measuring means interposed between each strain insulator means and the respective terminal transmission tower to produce an electrical signal representative of the power line tension;

    signal processing means located at and connected to the tension measuring means;

    said signal processing means including programmed computer means to produce second electrical signals which are a function of the sag of the power line; and

    transceiver means connected to the computer means to transmit the second electrical signals to a distant location whereby current in the power line is adjusted in accordance with the received second electrical signals.

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