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Fault clearing method, device and equipment responding to voltage loss of station communication power supply

A technology for communication power supply and fault removal, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of inability to communicate with adjacent substations, failure to remove faults, and the impact of full-line quick-action protection.

Active Publication Date: 2019-09-20
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the substation’s communication power supply loses voltage, it cannot communicate with adjacent substations, and the full-line fast-moving protections based on double-ended quantity information, such as optical difference protection and longitudinal protection between this station and adjacent stations, may be affected, resulting in abnormal protection work, there is a risk that the fault cannot be removed for a long time

Method used

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  • Fault clearing method, device and equipment responding to voltage loss of station communication power supply
  • Fault clearing method, device and equipment responding to voltage loss of station communication power supply
  • Fault clearing method, device and equipment responding to voltage loss of station communication power supply

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Embodiment 1

[0049] see figure 1 , figure 1 It is an implementation flow chart of the fault removal method for dealing with the loss of voltage of the station communication power supply in the embodiment of the present invention, and the method may include the following steps:

[0050] S101: When it is detected that there is a fault in the power system and there is a substation with a voltage loss of the communication power supply for the station in the level line where the fault is located, determine the substation where the communication power supply for the station loses voltage as the target substation.

[0051] The fault detection device can be set in the power system in advance. When the fault detection device detects that there is a fault in the power system, and there is a substation where the station communication power supply loses voltage in the level line where the fault is located, the station communication power supply can be generated. The unvoltage substation is determined...

Embodiment 2

[0059] see figure 2 , figure 2 It is another implementation flow chart of the fault removal method for dealing with the loss of voltage of the station communication power supply in the embodiment of the present invention, and the method may include the following steps:

[0060] S201: When it is detected that there is a fault in the power system and there is a substation with a voltage loss of the communication power supply for the station in the level line where the fault is located, determine the substation where the communication power supply for the station loses voltage as the target substation.

[0061] S202: Obtain voltage data and current data at the end where the target substation is located.

[0062] After determining the target substation that produces the loss of voltage of the communication power supply for the station, the voltage data and current data of the end where the target substation is located can be acquired.

[0063] S203: According to the voltage da...

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Abstract

The invention discloses a fault clearing method, device and equipment responding to voltage loss of a station communication power supply. The method comprises the following steps: when a fault is detected in an electric power system and a substation with voltage loss of the station communication power supply exists in the level of circuit where the fault occurs, determining the substation generating the voltage loss of the station communication power supply as the target substation; protecting the target substation by using ground-layer protection configuration or substation-area-layer protection configuration; and protecting other substations, except the target substation, in the level of circuit where the target substation is located and in adjacent levels of circuit by using wide-area-layer protection configuration so as to clear the fault. With such a technical scheme provided by embodiments of the invention, the efficiency of fault clearing is greatly improved, and the reliability of fault clearing is enhanced. The invention also discloses the fault clearing device, the fault clearing equipment and a storage medium for coping with the voltage loss of the station communication power supply. The device, the equipment and the storage medium have corresponding technical effects.

Description

technical field [0001] The invention relates to the technical field of substation protection, in particular to a fault removal method, device, equipment and computer-readable storage medium for dealing with voltage loss of a communication power supply for a station. Background technique [0002] After the substation’s communication power supply loses voltage, it cannot communicate with adjacent substations, and the full-line fast-moving protections based on double-ended quantity information, such as optical difference protection and longitudinal protection between this station and adjacent stations, may be affected, resulting in abnormal protection work, there is a risk that the fault cannot be removed for a long time. [0003] To sum up, how to effectively solve the problems that when the substation communication power supply loses voltage, the protection cannot operate normally, and there is a risk that the fault cannot be removed for a long time is an urgent problem for t...

Claims

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Application Information

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IPC IPC(8): H02H7/22H02H7/26
CPCH02H7/22H02H7/262
Inventor 王增超刘玮黄明辉段新辉陈志光曾耿晖李一泉梁博王育学刘琨朱晓华
Owner GUANGDONG POWER GRID CO LTD
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