Circuit alternating current (AC) ice melting method and circuit AC ice melting device

An ice-melting method and ice-melting technology, which are used in overhead installation, cable installation, electrical components, etc., can solve the problems of inability to take into account at the same time, inflexible impedance matching, and complicated operation.

Active Publication Date: 2013-07-10
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In short, in the existing line AC ice melting method, the long line and the short line cannot be used as the ice melting line at the same time, the impedance matching is not flexible, the operation is cumbersome, and the efficiency is low

Method used

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  • Circuit alternating current (AC) ice melting method and circuit AC ice melting device
  • Circuit alternating current (AC) ice melting method and circuit AC ice melting device
  • Circuit alternating current (AC) ice melting method and circuit AC ice melting device

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0030] In view of the existing line AC ice melting method, the long line and the short line cannot be considered at the same time as the ice melting line, such as image 3 As shown, an embodiment of the present invention provides a schematic diagram of an ice melting method for a line AC ice melting device. The line AC ice melting device 100 is connected to one end of an ice melting line 200, and the other end of the ice melting line 200 i...

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PUM

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Abstract

This invention provides a circuit alternating current (AC) ice melting method and a circuit AC ice melting device, the circuit AC ice melting device is connected at one end of an ice melting circuit, the other end of the ice melting circuit is connected with an ice melting power source, the circuit AC ice melting device comprises a control part and an impedance compensation part, the impedance compensation part comprises an inductive impedance compensation sub-circuit and a capacitive impedance compensation sub-circuit which are connected at one end of the ice melting circuit, signal input of the control part comes from the ice melting circuit, and a signal output end of the control part is connected to the impedance compensation part. According to parameter situations of the ice melting power supply and the ice melting circuit, the control part per-estimates ice a melting current of the ice melting circuit, a long circuit and a short circuit are preliminarily judged according to a comparative result of the pre-estimated ice melting current and an ice melting current target value, then the inductive impedance compensation sub-circuit and/or the capacitive impedance compensation sub-circuit are/is controlled to fall in, through adjustment of an impedance value of the inductive impedance compensation sub-circuit, and the ice melting current in the ice melting circuit is enabled to reach a pre-set range of the ice melting current target value until ice melting is completed.

Description

Technical field [0001] The invention relates to the field of reactive power compensation technology and line ice melting technology, and more specifically, to a line AC ice melting method and device. Background technique [0002] Freezing rain raindrops condense on the wires, forming icing on the wires. Ice coating increases the load on the wires. For high-voltage wires that transmit electricity over long distances, ice coating increases the load on the tower. Severe icing made the tower unable to support these wires and collapsed, causing a large-scale power interruption, causing significant economic losses and social impact. Therefore, deicing is the only way to ensure the smooth flow of the grid. [0003] The conventional line AC ice melting method is: under the normal operation of other equipment, stop the ice melting line, short-circuit one end of the ice melting line, and select the appropriate system power supply as the ice melting power supply at the other end, and contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16H02J3/18
CPCY02E40/30
Inventor 金涌涛毛颖兔余绍峰张建平胡叶舟毛航银赵启承
Owner STATE GRID CORP OF CHINA
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