High voltage electrical network with DC ice-melting device and current return through ground
First Claim
1. A high-voltage electrical network comprising:
- a plurality of lines of said high-voltage electrical network, each line having several circuits, one of said plurality of lines having a heated circuit whereon the icing is melted;
neutral conductors of said high-voltage electrical network, at least two of said neutral conductors being grounded;
at least two ground circuits, at least one of said ground circuits being connected to one of said neutral conductors and serving as a first operational grounding means and another ground circuit serving as a second operational grounding means;
a device for melting the icing on one of said lines by the use of a direct current, connected to said heated circuit of one of said lines and to one of said ground circuits,said heated circuit of one of said lines, said two ground circuits serving as said first and second operational grounding means, said device for melting the icing on one of said lines and the ground serving as a return conductor being connected in series to one another and forming a circuit for melting the icing on one of said lines; and
a device connected to one of said neutral conductors and also connected to an associated ground circuit for preventing the direct current from flowing to said neutral conductors.
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Accused Products
Abstract
A high-voltage electrical network comprises neutral conductors, at least two of them being grounded, and at least two ground circuits, at least one of them being connected to a neutral conductor and functioning as a first operational grounding means which is a part of a circuit for melting the icing by direct current on one of the lines of the high-voltage electrical network. The ice melting circuit is also provided with at least one more series-connected operational grounding means, a heated circuit of a high-voltage electrical network, a device for melting the icing by direct current on one of the lines of the high-voltage electrical network and a ground used as a return conductor. The high-voltage electrical network, additionally comprises at least one device, for preventing the direct current from flowing to the neutral conductors of the high-voltage electrical network, connected to one of the neutral conductors, coupled to one of the ground circuits used as an operational grounding means and forming a part of a circuit for melting the icing on one of the lines of the high-voltage electrical network by direct current, and to the same ground circuit.
27 Citations
20 Claims
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1. A high-voltage electrical network comprising:
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a plurality of lines of said high-voltage electrical network, each line having several circuits, one of said plurality of lines having a heated circuit whereon the icing is melted; neutral conductors of said high-voltage electrical network, at least two of said neutral conductors being grounded; at least two ground circuits, at least one of said ground circuits being connected to one of said neutral conductors and serving as a first operational grounding means and another ground circuit serving as a second operational grounding means; a device for melting the icing on one of said lines by the use of a direct current, connected to said heated circuit of one of said lines and to one of said ground circuits, said heated circuit of one of said lines, said two ground circuits serving as said first and second operational grounding means, said device for melting the icing on one of said lines and the ground serving as a return conductor being connected in series to one another and forming a circuit for melting the icing on one of said lines; and a device connected to one of said neutral conductors and also connected to an associated ground circuit for preventing the direct current from flowing to said neutral conductors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification