Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing

A technology for automatic reclosing and transmission lines, which is applied to circuit devices, emergency protection circuit devices, emergency protection devices for automatic disconnection, etc., and can solve problems such as misjudgment and beating frequency

Inactive Publication Date: 2013-01-09
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

The principle of this method is simple, but due to the influence of the shunt reactor, there will be a ...

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  • Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing
  • Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing
  • Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing

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Embodiment Construction

[0042] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0043] The single-phase automatic reclosing control device for UHV transmission lines in this embodiment, such as figure 1 As shown, including main control module, voltage acquisition module, input circuit, output circuit, display module, keys, printer interface and network interface;

[0044]The output end of the voltage acquisition module is connected to the input end of the main control module, the output end of the input circuit is connected to the input end of the main control module, the output end of the main control module is connected to the input end of the output circuit, and the input end of the display module is connected to The output end of the main control module and the output end of the button are connected to the input end of the main control module, and the output end of the main control module is respectively connecte...

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Abstract

The invention discloses a method and a device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing. The device comprises a master control module, a voltage acquisition module, a switching-in circuit, a switching-out circuit, a display module, a key, a printer interface and a network interface. An output end of the voltage acquisition module and an output end of the switching-in circuit are connected with an input end of the master control module, an output end of the master control module is connected with an input end of the switching-out circuit, an input end of the display is connected with the output end of the master control module, an output end of the key is connected with the input end of the master control module, and the output end of the master control module is respectively connected with the printer interface and the network interface. The method and the device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing effectively solve the problem of single-phase adaptive reclosing fault recognition and the problem of misjudgment caused by beat frequency resonance when fault types are judged by the ultrahigh-voltage transmission line with parallel reactors according to voltage. In addition, the control device is simple, reliability and accuracy of judgment results are improved, and reclosing operations are precisely controlled.

Description

technical field [0001] The invention relates to the technical field of automatic reclosing control of power system transmission lines, in particular to a single-phase automatic reclosing control device and method for UHV transmission lines. Background technique [0002] With the development of the economy, the requirements for the transmission capacity of the power grid continue to increase. EHV / UHV transmission will become the main method of long-distance and large-capacity transmission in the future. From the results of operation statistics and records of EHV transmission lines at home and abroad, single-phase ground faults The failure rate is as high as 90%, among which transient faults account for about 80%. In order to improve the reliability and stability of system operation, single-phase automatic reclosing is widely used. However, the single-phase adaptive reclosing action has a certain blindness. When it recloses on a permanent fault, the power system will suffer f...

Claims

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Application Information

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IPC IPC(8): H02H3/06H02H7/26
Inventor 林莘谢寅志徐建源
Owner SHENYANG POLYTECHNIC UNIV
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