10kV line fault detection system based on carrier signal fading characteristics

A carrier signal, line fault technology, applied in short-circuit testing, fault location, fault detection according to conductor type, etc., can solve the problem that 10kV power lines are not easy to locate fault location and fault type, and achieve the effect of solving difficult to determine

Inactive Publication Date: 2021-06-25
QINGDAO TOPSCOMM COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the defects or deficiencies in the above-mentioned prior art and the problem that the existing 10kV power line is not easy to locate the fault location and fault type, the purpose of the present invention is to provide a 10kV line fault detection system based on the carrier signal fading characteristics. The 10kV line is used as the carrier, and by comparing the signal fading value of the carrier signal when it is transmitted on the 10kV line, the fault type and fault location can be accurately and quickly confirmed

Method used

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  • 10kV line fault detection system based on carrier signal fading characteristics

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Embodiment 1

[0015] Such as figure 1 As shown, this embodiment proposes a 10kV line fault detection system based on carrier signal fading characteristics, specifically as follows:

[0016] The 10kV single-phase / three-phase line carrier signal fading detection equipment learns for a period of time, stores the 10kV line carrier signal fading value of 50dBV, and the average value is stable at 50dBV. When a phase failure occurs on the 10kV line, the 10kV line carrier signal fades Change to 10dBV, after the 10kV line carrier signal fading detection equipment collects 10dBV data, compare it with the previous 50dBV, judge that the line is in fault, judge that the fault type is a ground fault, and immediately report the faulty carrier signal fading information to the medium voltage carrier communication Slave, medium-voltage carrier communication The slave obtains the amplitude characteristics and spectrum characteristics of the fading signal of the faulty carrier signal that can be transmitted th...

Embodiment 2

[0018] The difference from Embodiment 1 is that the system can monitor the type and location of 10kV single-phase, two-phase or three-phase power line faults in real time, and install a corresponding number of medium-voltage carrier communication hosts and medium-voltage carrier communication slaves according to the actual needs of the site , Integrated capacitive coupler, 10kV line carrier signal fading detection equipment.

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Abstract

The invention discloses a 10kV line fault detection system based on carrier signal fading, and belongs to the field of medium-voltage power distribution. The system comprises 10kV line carrier signal fading detection equipment, a medium-voltage carrier communication slave, a slave integrated capacitive coupler, a host integrated capacitive coupler, a medium-voltage carrier communication host and a master station. When a 10kV line breaks down, the 10kV line carrier signal fading detection equipment collects signal fading information, the signal fading information sequentially passes through the medium-voltage carrier communication slave, the slave integrated capacitive coupler, the host integrated capacitive coupler and the medium-voltage carrier communication host, and finally the fault fading detection information is reported to a master station. The system is used for solving the problem that the fault type and position of the 10kV line are not easy to determine, and has the advantages that the signal fading value of the 10kV line is calculated in real time, the fault information of the line is reported to the master station system in time in the fault state, and the fault type and position of the 10kV line are quickly positioned.

Description

technical field [0001] The invention relates to the field of medium-voltage power distribution, in particular to a 10kV line fault detection system based on carrier signal fading characteristics. Background technique [0002] The environment of 10kV power lines in my country is complex, there are many types of load equipment, long power supply paths, and frequent line faults. After a line fault occurs, it is not easy to locate the fault location and fault type, which seriously affects the quality of residents' electricity consumption, and at the same time brings potential safety hazards. The maintenance cost of the power company reduces the maintenance efficiency of the power company. Therefore, realizing real-time monitoring and positioning of 10kV medium-voltage line faults is of great significance for improving the quality of electricity consumption by residents, improving the work efficiency of power companies, and maintaining power safety. At present, when a 10kV line fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R31/52G01R31/54G01R31/58
CPCG01R31/085G01R31/52G01R31/54G01R31/58
Inventor 徐剑英郭小燕李亮孙朝杰矫振飞曾令斌高庆欢郭相泉李显涛
Owner QINGDAO TOPSCOMM COMM
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