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AC-DC general relay calibrator

A common AC and DC relay technology, used in circuit breaker testing, instruments, measuring electricity, etc., can solve the problems of inability to verify the performance of relay components accurately, comprehensively and safely, to ensure safe and stable operation and prevent circuit breaker failures. Effect

Inactive Publication Date: 2020-05-15
STATE GRID HEBEI ELECTRIC POWER CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the two verification methods in actual work have disadvantages for the performance verification of relay components, and cannot make accurate, comprehensive and safe verification of the performance of relay components.

Method used

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  • AC-DC general relay calibrator
  • AC-DC general relay calibrator
  • AC-DC general relay calibrator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as Figure 1 to 3 As shown, this embodiment is an AC / DC universal relay calibrator, which has a grounded housing 10, and the housing 10 is provided with an interface circuit board for an AC power interface 11, a battery 12, a rectifier 13, and an inverter 14. , The housing 10 is provided with an AC power input terminal 20, a DC relay terminal 15 and an AC contactor terminal 16, the terminal 25 of the DC relay terminal 15 and the input terminal of the DC relay 18 under test The wiring terminals are connected by a wiring harness, the wiring terminal 26 of the DC relay access station 15 and the input terminal of the DC relay 18 under test are connected through a wiring harness, the connection terminal 27 of the AC relay access station 16 and the input terminal of the AC relay 19 under test The wiring terminals are connected through a wiring harness, and the wiring terminals 28 of the AC relay access station 16 and the input terminal wiring terminals of the AC relay 19 ...

Embodiment 2

[0042] This embodiment is an AC / DC universal relay calibrator. The difference from the first embodiment is that each of the detection branches includes a short-circuit switch connected in parallel with a pair of output contacts of the relay under test for forced maintenance. The detection lights of this detection branch are always on, and a unified brightness reference can be obtained by comparing the brightness of all detection lights.

Embodiment 3

[0044] This embodiment is an AC / DC universal relay calibrator. The relay access station includes a light sensor arranged on one side of each detection lamp and a control unit connected to the light sensor. The control unit is used to receive each detection The luminous intensity of the lamp and the output comparison result are used as the evaluation result of each output contact of the tested relay. Each detection branch includes a short-circuit switch connected in parallel with a pair of output contacts of the tested relay, and the control unit controls the closing and opening of the short-circuit switch.

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PUM

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Abstract

The invention discloses an alternating-current and direct-current universal relay calibrator, and belongs to the technical field of the power detection instrument. The calibrator comprises a relay access bench and a wiring harness connected between a wiring terminal of the relay access bench and a wiring terminal of a to-be-detected relay. The relay access bench comprises a first loop connected with the power supply terminal and the input end of the relay, and a second loop connected with the dry battery and the output end of the relay. A power switch K and an adjustable resistor R are connected in series in the first loop. The second loop comprises a power supply branch circuit where a dry battery is located and a plurality of detection branch circuits which are connected in parallel andthen connected in series with the power supply branch circuit, and an output contact of a detected relay and a detection lamp are connected in series in each detection branch circuit. According to theinvention, diagnosis during a power failure routine test and performance diagnosis during fault elimination work can be carried out on the relay element action performance in the circuit breaker equipment loop in the transformer substation.

Description

Technical field [0001] The invention belongs to the technical field of power detection instruments, and in particular relates to a calibrator applied to the working performance of a secondary component AC and DC relay in a circuit breaker device with a voltage level of 35kV and above. Background technique [0002] Breaker and other switching equipment failures account for a large proportion of power grid faults. Breaker equipment failures are mainly electrical and mechanical failures. Among them, electrical faults are mostly caused by the damage of secondary components. Relays are widely used and large in number of secondary components in the secondary circuit of circuit breaker equipment. The good performance of the relay is directly related to the safe and stable operation of the switchgear. [0003] Nowadays, common circuit breaker equipment uses a large number of AC and DC relays in the secondary circuit, and realizes the control of breaking of the circuit breaker equipment by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/3278
Inventor 陈翼飞齐少猛马晓阳樊怀远王贺英马威李劭尊高学峰刘佳林贺立志尹贝贝曹星火冯明楠黄超
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD