CN202886458U - Real-time detection and alarm device for bypass flexible cable running current - Google Patents

Abstract

A bypass flexible cable operating current real-time detection and alarm device, related to the technical field of current detection in power systems, including a data processing alarm device and a current transformer, the data processing alarm device includes a central processing module and an alarm connected to the central processing module, Display screen, coaxial cable connector and operation button, alarm, display screen, operation button are arranged on the panel of described data processing alarm device, there are three coaxial cable connectors, and three coaxial cable connectors are arranged in a vertical direction On the side of the data processing alarm device, there are three current transformers, and the signal output ends of the three current transformers are connected to the three coaxial cable connectors of the data processing alarm device through coaxial cables in one-to-one correspondence. The device can detect the three-phase flexible cable in real time, and give an early alarm when the operating current is close to the rated current, which solves the problem that the potential safety hazard of overcurrent during the operation of the bypass cable system cannot be found in time.

Description

A real-time detection and alarm device for bypass flexible cable operating current

technical field

The utility model relates to the technical field of current detection in electric power systems, in particular to a real-time detection and alarm device for the operating current of a bypass flexible cable.

Background technique

The non-stop operation of the cable line is to realize the non-stop or short-term power failure of the user, and the maintenance of the cable line equipment is carried out by means of live or short-term power failure, including live disconnection of no-load cable leads and bypass operations. project. During the bypass operation, the operating current of the bypass system must be less than the minimum rated current of the bypass equipment. Therefore, after the bypass system is put into operation, the detection of the operating load current of the bypass flexible cable is an important step in the operation and maintenance of the bypass system. step. At present, the on-site detection is mainly manual, that is, the three-phase flexible cable is detected phase by phase by using a clamp ammeter every half an hour. In the actual operation of the site, it was found that this detection method is laborious, and there is a half-hour detection blind spot, which cannot detect the bypass flexible cable in real time, and cannot give an early warning when the operating current is close to the rated current, resulting in the on-site failure. Knowing the current state of the bypass flexible cable during operation, there is a potential safety hazard of bypass system overcurrent on site.

Utility model content

In order to overcome the shortcomings of the above-mentioned prior art, the purpose of this utility model is to provide a real-time detection and alarm device for the operating current of the bypass flexible cable, which can detect the three-phase flexible cable in real time, and when the operating current is close to the rated Early warning is carried out, which solves the problem that the potential safety hazard of overcurrent in the operation of the bypass cable system cannot be discovered in time.

In order to solve the above problems, the utility model adopts the following technical solutions: a real-time detection and alarm device for bypass flexible cable running current, including a data processing alarm device and a current transformer, and the data processing alarm device includes a central processing module and a central processing module. The alarm, display screen, coaxial cable connector and operation button connected to the processing module, the alarm, display screen and operation button are arranged on the panel of the data processing alarm device, and there are three coaxial cable connectors, three The coaxial cable joints are arranged vertically on the side of the data processing alarm device. There are three current transformers, all of which are open-type current transformers. The signal output terminals of the three current transformers are connected to the data processing alarm device. The three coaxial cable connectors of the device are respectively connected through coaxial cables in one-to-one correspondence.

The beneficial effect of the utility model is: the device can detect the three-phase flexible cable in real time, and give an early alarm when the operating current is close to the rated current, which solves the problem that the potential safety hazard of overcurrent during the operation of the bypass cable system cannot be found in time .

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Fig. 1 is a structural representation of the utility model;

In the figure: 1. Data processing alarm device, 2. Display screen, 3. Operation button, 4. Alarm device, 5. Current transformer, 6. Coaxial cable, 7. Coaxial cable connector.

Detailed ways

As shown in accompanying drawing 1, a kind of bypass flexible cable operating current real-time detection alarm device includes data processing alarm device 1 and current transformer 5, and described data processing alarm device 1 includes a central processing module and is connected with the central processing module Alarm 4, display screen 2, coaxial cable connector 7 and operation button 3, alarm 4, display screen 2, operation button 3 are arranged on the panel of described data processing alarm device 1, and described coaxial cable connector There are three coaxial cable connectors 7 arranged vertically on the side of the data processing alarm device 1. There are three current transformers 5, all of which are open-type current transformers. The three current transformers The signal output terminals of the device 5 and the three coaxial cable connectors 7 of the data processing alarm device 1 are connected through the coaxial cables 6 in one-to-one correspondence.

When in use, first operate each current transformer 5 to hug one of the three-phase cables respectively, and then set the upper limit value of the alarm by operating the button 3 . The data processing alarm device 1 will receive and process the real-time detection data of the induction signal from the current transformer 5 through the coaxial cable 6, and the real-time data will be displayed on the display screen 2, and when the detected current data is close to the upper limit value of the alarm Report to the police by alarm 4.

Claims (1)

1. bypass flexible cable running current real-time detection alarming device, it is characterized in that, comprise data processing warning device summation current transformer, described data are processed warning device and are comprised central processing module and the alarm that is connected with central processing module, display screen, coaxial fitting and action button, alarm, display screen, action button is arranged on described data and processes on the panel of warning device, described coaxial fitting has three, three coaxial fittings vertically spread configuration are processed on the side of warning device in data, described current transformer has three, and be open type current transformer, the signal output part of three current transformers and data are processed and correspondingly one by one between three coaxial fittings of warning device are connected by concentric cable respectively.