Circuit breaker, and device and method for detecting contact resistance of wiring terminal of circuit breaker

A terminal block and contact resistance technology, which is applied in the field of circuit breaker detection, can solve problems such as inaccurate contact resistance, low safety, and inability to monitor lines in real time, so as to improve detection accuracy, realize real-time monitoring, and avoid electricity accidents Effect

Pending Publication Date: 2022-07-22
苏州清视博通物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The monitoring of the above traditional means is in the stage of fault deterioration, and it is impossible to monitor each section of the line in real time, and it cannot be implemented on a large scale, which makes the line unable to carry out dangerous warning and low safety problems.
And under normal circumstances, the contact resistance is very small, generally at the milliohm level, so the voltage drop on the circuit is also very small, and the common-mode voltage on the AC live wire branch is also very high, and the calculation of the contact resistance based on the measured voltage drop is not accurate enough.

Method used

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  • Circuit breaker, and device and method for detecting contact resistance of wiring terminal of circuit breaker
  • Circuit breaker, and device and method for detecting contact resistance of wiring terminal of circuit breaker
  • Circuit breaker, and device and method for detecting contact resistance of wiring terminal of circuit breaker

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Effect test

Embodiment 1

[0046] Figure 1A It is a schematic structural diagram of a circuit breaker wiring terminal contact resistance detection device provided in Embodiment 1 of the present invention; Figure 1B It is a schematic structural diagram of another device for detecting contact resistance of a circuit breaker wiring terminal provided in Embodiment 1 of the present invention.

[0047] like Figure 1A and Figure 1B As shown, a circuit breaker terminal contact resistance detection device 100 includes: a temperature detection module 110, a current detection module 120, a data acquisition module 130 and a data processing module 140;

[0048] The temperature detection module 110 is arranged on the surface of the terminal 210 of the circuit breaker, and is used to measure the temperature of the terminal 210 online;

[0049] The current detection module 120 is used to measure the current flowing after the power supply is applied to the terminal 210 online;

[0050] The data acquisition module ...

Embodiment 2

[0084] image 3 This is a schematic structural diagram of a circuit breaker according to Embodiment 2 of the present invention.

[0085] like image 3 As shown, a circuit breaker 200 includes: a terminal 210, a power source 220 and a contact resistance detection device 100 for the terminal of the circuit breaker;

[0086] The terminal 210 is connected to the power supply 220;

[0087] The circuit breaker terminal contact resistance detection device 100 includes a temperature detection module 110, a current detection module 120, a data acquisition module 130 and a data processing module 140; the temperature detection module 110 is arranged on the surface of the terminal 210 of the circuit breaker 200; the current detection module 120 is connected to The terminal 210 is electrically connected; the data acquisition module 130 is connected with the temperature detection module 110 and the current detection module 120 , and the data processing module 140 is connected with the dat...

Embodiment 3

[0090] Figure 4 This is a schematic flowchart of a method for detecting the contact resistance of a circuit breaker wiring terminal provided in the third embodiment of the present invention. This embodiment can be applied to the situation of online detection of the contact resistance of the circuit breaker wiring terminal, and the method can be connected by the circuit breaker. Terminal contact resistance detection device to perform.

[0091] like Figure 4 As shown, a method for detecting the contact resistance of a circuit breaker wiring terminal specifically includes the following steps:

[0092] Step 310: Acquire the first temperature of the temperature detection module disposed on the surface of the connection terminal of the circuit breaker.

[0093] The temperature detection module is arranged on the surface of the terminal of the circuit breaker. Exemplarily, the temperature detection module includes a temperature sensor. In this embodiment, a high-precision tempera...

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Abstract

The invention discloses a circuit breaker and a circuit breaker wiring terminal contact resistance detection device and method. The circuit breaker wiring terminal contact resistance detection device comprises a temperature detection module, a current detection module, a data acquisition module and a data processing module. The temperature detection module is arranged on the surface of a wiring terminal of the circuit breaker and is used for measuring the temperature of the wiring terminal on line; the current detection module is used for online measuring the current flowing through the wiring terminal after the power supply is applied to the wiring terminal; the data acquisition module is connected with the temperature detection module and the current detection module and is used for sampling the output of the temperature detection module to obtain temperature data and sampling the output of the current detection module to obtain current data; and the data processing module is connected with the data acquisition module and is used for calculating temperature rise data according to the temperature data and calculating the contact resistance of the wiring terminal according to the temperature rise data, the current data and the physical parameters of the wiring terminal. The effects of online detection of the contact resistance of the circuit breaker, real-time monitoring and timely early warning are achieved.

Description

technical field [0001] Embodiments of the present invention relate to circuit breaker detection technology, and in particular, to a circuit breaker, a circuit breaker wiring terminal contact resistance detection device and method. Background technique [0002] The circuit breaker plays the role of conducting and breaking the current in the power transmission and distribution system, and is the node carrier of the primary current. The contact resistance between the terminals of the circuit breaker is closely related to the life of the equipment, and the performance of the contact resistance becomes the influence. The key to the electrical reliability of circuit breakers. Once the contact resistance of the circuit breaker terminals increases, the temperature rise in the circuit breaker will rise sharply. If it is not dealt with as soon as possible, the situation will continue to deteriorate, which will affect the performance of the electrical connector, and may even cause harm...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01R27/02H01H71/04
CPCG01R31/327G01R27/02H01H71/04H01H2071/044
Inventor吴恒赵钦浩张杨
Owner苏州清视博通物联科技有限公司