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Main transformer protection tripping matrix exit auxiliary tester

A technology of main transformer protection and tester, which is applied in circuit breaker testing, instrumentation, and electrical measurement. It can solve the problems of time-consuming and laborious manual hand-held multimeter detection of the outlet of the pressure plate, and the relay protection test bench is not suitable for measuring voltage-carrying plates. It achieves the effect of avoiding pressing and waiting time, intuitive inspection work, and reducing workload

Inactive Publication Date: 2013-10-16
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the conventional relay protection test bench is not suitable for measuring the output pulse of the voltage plate, and the time-consuming and laborious manual hand-held multimeter is still commonly used to detect the outlet of the pressure plate in normal work.

Method used

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  • Main transformer protection tripping matrix exit auxiliary tester
  • Main transformer protection tripping matrix exit auxiliary tester
  • Main transformer protection tripping matrix exit auxiliary tester

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Embodiment Construction

[0016] Depend on Figure 1-4 As can be seen from the illustrated embodiment, the present invention includes a DC power supply VCC, a power switch K1, a timing switch K2, a running indicator light, 10 detection and sound and light alarm circuits with the same structure and 10 time timing and display circuits with the same structure; The operation indicator light is connected to the DC power supply VCC through the power switch K1; the input ends of the detection and sound and light alarm circuit are respectively connected to the corresponding end of the lower port of the tripping pressure plate of the detected relay protection device; the power supply of the detection and sound and light alarm circuit The terminal is connected to the DC power supply VCC through the power switch K1; the input terminals of the time timing and display circuit are respectively connected to a pair of dry contacts of the relay protection test bench; The switch K1 is connected to the DC power supply VC...

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Abstract

The invention relates to a main transformer protection tripping matrix exit auxiliary tester comprising a direct-current power supply VCC, a power switch K1, a time switch K2, an operation indicating lamp, ten detection and sound-light alarm circuits which are same in structure and ten time recording and displaying circuits which are same in structure, wherein the operation indicating lamp is connected with the direct-current power supply VCC through the power switch K1; the input terminals of the detection and sound-light alarm circuits are respectively connected with the lower opening corresponding ends of a tripping plate of a relay protection device to be tested; the power terminals of the detection and sound-light alarm circuits are connected with the direct-current power supply VCC through the power switch K1; the input terminals of the time recording and displaying circuits are respectively connected with a pair of dry contacts of a relay protection test bed; and the power terminals of the time recording and displaying circuits pass through the time switch K2 and the power switch K1 in sequence and then is connected with the direct-current power supply VCC. The advantages of the auxiliary tester are that: accuracy and sensitivity of the detection are high; and operation is safe, rapid, easy and feasible.

Description

technical field [0001] The invention relates to an auxiliary tester for the outlet of a main transformer protection tripping matrix, which is suitable for acceptance and inspection of main transformer protection infrastructure specialized in relay protection. Background technique [0002] At present, the relay protection major is conducting the acceptance and all inspections of the main transformer protection infrastructure, especially for the 500kV ultra-high voltage substation, facing the four parts of the grounding distance, phase-to-phase impedance, zero-sequence direction, and zero-sequence Sequence overcurrent and other principle backup protection problems, the backup protection of each principle on each side is divided into three sections I, II, and III, and each section is divided into three time limits of 1, 2, and 3, which constitutes the main transformer protection trip matrix logic. Due to the dual configuration of relay protection, one main transformer has two ...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R31/327
Inventor 杨博涛刘海锋王永红杨丰马宜军
Owner STATE GRID CORP OF CHINA
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