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US 2015/0083483 A1Published application
High-capacity/efficiency transmission line design
AssigneeAEP Transmission Holding Company, LLC
InventorsMeihuan Zhu Fulk, Richard Gutman
Life of this patent
Estimating the term…
Abstract
A transmission tower structure for suspending from an arched crossarm a three phased circuit arranged in a compact delta configuration that improves the surge impedance loading (SIL) of a transmission line, reduces its series impedance, lowers both resistive and corona losses, and moderates electromagnetic fields and audible noise effects at the ground level—all achieved in a cost effective manner. The structure further has a low overall height and aesthetic appearance enhancing the public acceptance of the embodiments.
Claims25
A transmission tower structure for suspending an overhead power line, comprising:
- a tower structure including a vertical pylon and a cantilevered arm having a distal end relative to the vertical pylon;
- first, second, and third phase conductor bundles for transmitting electrical power in an electrical power transmission system, each conductor bundle comprised of multiple spaced-apart conductors, and each conductor bundle for transmitting electrical power at a different electrical phase angle;
- first, second, and third v-string insulator units for suspending the first, second, and third conductor bundles, respectively, such that each conductor bundle hangs below the respective v-string insulator unit from which it is suspended,
- wherein the first v-string insulator unit includes a first leg attached to the vertical pylon and a second leg attached to the cantilevered arm,
- the second v-string insulator unit includes a first leg attached to the first v-string insulator unit and a second leg attached to the cantilevered arm, and
- the third v-string insulator unit includes a first leg attached to the vertical pylon and a second leg attached to the second v-string insulator unit;
- and
- wherein the suspended first, second and third conductor bundles form a delta configuration with the distal end of the cantilevered arm closer to the second conductor bundle than the first and third conductor bundles.
5 more elements
A transmission tower structure for suspending an overhead power line, comprising:
- a tower structure including a vertical pylon and a cantilevered arm having a distal end relative to the vertical pylon;
- first, second, and third phase conductor bundles for transmitting electrical power in an electrical power transmission system, each conductor bundle comprised of multiple spaced conductors, and each conductor bundle for transmitting electrical power;
- first, second, and third v-string insulator units connected to the first, second, and third conductor bundles, respectively,
- wherein the first v-string insulator unit has a first leg attached to the vertical pylon and a second leg attached to the arm, and supports through tension in both of its first and second legs the weight of the first conductor bundle and a portion of the weight of the second and third conductor bundles,
- the second v-string insulator unit has a first leg attached to the first v-string insulator unit and a second leg attached to the arm, and supports through tension in both of its first and second legs the weight of the second conductor bundle and a portion of the weight of the third conductor bundle, and
- the third v-string insulator unit has a first leg attached to the vertical pylon and a second leg attached to the second v-string insulator unit, and supports through tension in both of its first and second legs the weight of the third conductor bundle;
- and
- wherein the suspended conductor bundles form a compact delta configuration with a phase-to-phase spacing of about 10 to 20 feet between the centers of any two conductor bundles.
5 more elements
A transmission tower structure, comprising:
- the tower structure including
- a vertical pylon, and
- a cantilevered arm having a distal end relative to the vertical pylon;
- first, second, and third conductor bundles, each conductor bundle including a conductor;
- first, second, and third insulator units configured to suspend the first, second, and third conductor bundles, respectively, whereby
- each of the conductor bundles hangs below the respective insulator unit from which it is suspended, and
- the distal end of the arm is closer to the second conductor bundle than to the first and third conductor bundles;
- the first insulator unit including a first leg attached to the vertical pylon and a second leg attached to the arm;
- the second insulator unit including a first leg attached to the first insulator unit and a second leg attached to the arm;
- and
- the third insulator unit including a first leg attached to the vertical pylon and a second leg attached to the second insulator unit.
8 more elements
Dependencies are inferred from the claim text.