CN206489246U - A kind of cable insulation situation on-line monitoring device - Google Patents

Abstract

The utility model provides an online monitoring device for cable insulation status. The cable detection device communicates with the monitoring host through the network. The cable detection device includes a temperature detector, a current detector and a signal transmitter, and the monitoring host includes a signal receiver and a data analyzer. , short message sender and mobile terminal, the data analyzer includes the display, after the aging of the cable somewhere in the urban power grid, the temperature, grounding current and other parameters of the cable at that place change. At this time, the current detector and temperature detector can quickly This parameter is detected, and the signal transmitter and signal receiver are used to transmit the parameter to the data analyzer, and the data analyzer analyzes the parameter to determine whether the cable needs to be repaired or replaced. When the cable needs to be replaced, the data analysis The device sends a short message to the mobile terminal through the short message sender, so as to quickly transmit the fault information to the technical personnel, and the technical personnel can obtain the information in time.

Description

An on-line monitoring device for cable insulation status

technical field

The utility model relates to the field of distribution networks, in particular to an on-line monitoring device for cable insulation conditions.

Background technique

The distribution network is mainly used to transmit electrical energy to deliver it to the place of use. Traditional power grids generally use overhead wires to transmit electric energy. When using overhead wires to transmit electric energy, a large space is required to set up the erection tower. Adding overhead wires is not suitable for electric energy transmission inside the city.

Due to the shortage of urban land resources, considering the impact of overhead lines on the safety of residents' houses and the appearance of the city, in recent years, most cities have replaced overhead lines by laying power cables, so as to take on the task of power transmission and distribution in urban power grids. . With the upgrading of the smart grid, the voltage level in the cable transmission and distribution network is gradually increasing, and the aging problem of cable insulation is gradually emerging. Among them, there are many factors that cause cable insulation aging or even failure.

For a long time, in order to prevent accidents, cables have been inspected and maintained by regular tests, which has played a good role in ensuring safe and reliable operation of cables and preventing accidents. However, with the development of the power industry and the improvement of power users' requirements for power supply reliability, periodic tests have been unable to better adapt to the safe and reliable operation of modern power systems due to the shortcomings of non-selective detection and the fact that the test itself is easy to accelerate cable insulation aging. Require.

Contents of the invention

The utility model provides an on-line monitoring device for cable insulation status, aiming at overcoming the problem of difficult inspection of cables in urban power grids in the prior art.

In order to solve the above technical problems, the utility model adopts the following technical scheme: an online monitoring device for cable insulation status, including a cable detection device and a monitoring host communicating with the cable detection device through a network, and the cable detection device includes a device for measuring the surface temperature of the cable. A temperature detector, a current detector and a signal transmitter for measuring the grounding current of the cable insulation layer, both the temperature detector and the current detector communicate with the signal transmitter, and the monitoring host includes a signal receiver communicating with the signal transmitter, A data analyzer communicating with the signal receiver, a short message sender communicating with the data analyzer and a mobile terminal receiving information sent by the short message sender, the short message sender communicates with the mobile terminal through a network, and the data analyzer A display is included for displaying parameters measured by the temperature detector and the current detector, the display is in communication with the data analyzer.

An optional solution, the temperature detector communicates with the signal transmitter through a first communication cable, the current detector communicates with the signal transmitter through a second communication cable, and the first communication Both the cable and the second communication cable are sheathed with a shielding layer. The setting of the shielding layer can effectively reduce the interference of the electric field to the signal, improve the stability of signal transmission between the temperature detector, the current detector and the signal transmitter, and optimize the performance of the online monitoring device.

An optional solution, the signal transmitter includes a housing and a retractable antenna fixed on the housing, the antenna is integrally provided with a stud, and the housing is provided with a screw that cooperates with the stud. holes, and anti-loosening washers are sleeved on the studs. The shell protects the signal transmitter and prolongs the service life of the signal transmitter. The retractable antenna makes the signal transmitter easy to carry and easy to operate when laying the power grid. The setting of the anti-loosening gasket can prevent the antenna from loosening and optimize the performance of the signal transmitter.

An optional solution, the mobile terminal includes a sound alarm, and the mobile terminal is provided with a controller that controls the sound of the sound alarm after the mobile terminal receives the short message sent by the short message sender. A control button for controlling the alarm to stop ringing is also provided, and the control button communicates with the controller. The setting of the sound alarm optimizes the performance of the mobile terminal. After the mobile terminal receives the information, it sounds the sound alarm quickly, which can play a role in reminding the technicians. performance of the online monitoring device.

An optional solution, the monitoring host also includes a light alarm, the data analyzer is integrated with a control module that controls the lighting of the light alarm according to the analysis results of the data analyzer, and the data analyzer is also equipped with There is a control button for controlling the extinguishment of the light alarm, and the control button communicates with the control module. The light alarm mainly serves as a reminder. When the parameters detected by the temperature detector or current detector exceed the allowable range, the light alarm lights up to remind the technicians working in the monitoring room, and the technicians can be informed in time. The fault information optimizes the performance of the online monitoring device.

Compared with the prior art, the utility model provides an online monitoring device for cable insulation status, which has the following advantages: the cable detection device communicates with the monitoring host through the network, and the cable detection device includes a temperature detector, a current detector and a signal transmitter , the monitoring host includes a signal receiver, a data analyzer, a short message sender and a mobile terminal, and the data analyzer includes a display. After the aging of a cable somewhere in the urban power grid, the parameters such as the temperature and grounding current of the cable at that place change. , the current detector and temperature detector can quickly detect the parameter, and use the signal transmitter and signal receiver to transmit the parameter to the data analyzer, and the data analyzer analyzes the parameter to determine whether the cable needs to Maintenance or replacement, when the cable needs to be replaced, the data analyzer sends a short message to the mobile terminal through the short message sender, so as to quickly transmit the fault information to the technicians, and the technicians can get the information in time to carry out maintenance or other operations on the power grid. When the power grid is running for a long time, there is no need for technicians to regularly visit the site for inspection.

Description of drawings

Accompanying drawing 1 is a structural block diagram of an on-line monitoring device for cable insulation status of the present invention.

detailed description

A cable insulation status online monitoring device of the present utility model will be further described below in conjunction with the accompanying drawings. The following examples are only used to help those skilled in the art understand the utility model, and are not intended to limit the utility model.

The cables laid in cities have the characteristics of large coverage area. When inspecting the cables, technicians need to go to the site to inspect them. Due to the large coverage area of the cables, it is very difficult to inspect the cables, which is not conducive to the normal operation of the power grid.

As shown in Figure 1, an on-line monitoring device for cable insulation conditions includes a cable detection device 1 and a monitoring host 2 communicating with the cable detection device 1 through a network;

As shown in Figure 1, the cable detection device 1 includes a temperature detector 3 for measuring the surface temperature of the cable, a current detector 4 for measuring the ground current of the cable insulation layer and a signal transmitter 5, and the temperature detector 3 and the current detector 4 all communicate with the signal transmitter 5, and the signal transmitter 5 is used to transmit the parameters detected by the temperature detector 3 and the current detector 4 to the monitoring host 2;

As shown in Figure 1, the temperature detector 3 communicates with the signal transmitter 5 through a first communication cable, and the current detector 4 communicates with the signal transmitter 5 through a second communication cable. Both the first communication cable and the second communication cable are provided with a shielding layer, and a signal conversion module for converting an analog signal into a digital signal may be integrated in the signal transmitter 5, so as to facilitate signal transmission and identification, and the temperature detector 3. The current detector 4 and the signal transmitter 5 are both arranged around the cable, and the shielding layer is mainly used to reduce the interference of the electric field on the signal, and optimize the performance of the online monitoring device;

As shown in Figure 1, the signal transmitter 5 includes a housing and a retractable antenna 11 fixed on the housing, the antenna 11 is integrally provided with studs, and the housing is provided with screw holes, the studs are covered with anti-loosening gaskets, the antenna 11 is reliably connected to the housing, which optimizes the performance of the signal transmitter 5, and the housing can also be made of shielding materials;

As shown in Figure 1, described monitoring host computer 2 comprises the signal receiver 6 that communicates with signal transmitter 5, the data analyzer 7 that communicates with signal receiver 6, the short message sender 8 that communicates with data analyzer 7 and receives short message The mobile terminal 9 of the information sent by the transmitter 8, the mobile terminal 9 can be a smart phone, a tablet computer, etc., and the data analyzer 7 can be a host computer, and software for analyzing data is stored in the host computer;

As shown in Figure 1, the monitoring host 2 also includes a light alarm 15, and the data analyzer 7 is integrated with a control module 16 that controls the lighting of the light alarm 15 according to the analysis results of the data analyzer 7. Analyzer 7 is also provided with the control key 17 that controls light alarm 15 to extinguish, and described control key 17 communicates with control module 16, and data analyzer 7 analyzes the parameter that current detector 4 and voltage detector detect, analyze When the result is not within a reasonable range, the light alarm 15 lights up to prompt technicians;

As shown in Figure 1, by network communication between described short message sender 8 and mobile terminal 9, described data analyzer 7 comprises the display 10 of the parameter that shows temperature detector 3, electric current detector 4 to measure, and described display 10 communicates with the data analyzer 7, and the display 10 is mainly used to display the parameters detected by the temperature detector 3 and the current detector 4 for technical personnel to check;

As shown in Figure 1, described mobile terminal 9 comprises sound alarm 12, and described mobile terminal 9 is provided with the controller 13 that controls sound alarm 12 to ring after mobile terminal 9 receives the note that short message sender 8 sends , the mobile terminal 9 is also provided with a control button 14 for controlling the alarm to stop ringing, the control button 14 communicates with the controller 13, and the mobile terminal 9 receives a short message and the sound alarm 12 sounds to prompt the technician It is ensured that technicians can obtain the information in time, and the performance of the online monitoring device is optimized.

The working principle of the above-mentioned technical scheme uses the temperature detector 3 and the current detector 4 to detect the temperature parameter and the grounding current parameter of the cable, and uses the signal transmitter 5 to transmit the parameter to the monitoring host 2, and the data analyzer 7 Analyze this parameter to judge whether the cable is aging. This scheme does not require technicians to inspect the cables on site, which is convenient for cable inspection and reduces the labor intensity of technicians. The urban power grid should contain multiple cable detection devices 1, and each cable detection device 1 should have a unique address or identification information, so that after the cable is aged, technicians can easily know the specific location of the fault and facilitate the maintenance of the power grid.

Some embodiments of the utility model have been introduced in detail above in conjunction with the accompanying drawings. After reading this specification, those skilled in the art can modify the above-mentioned embodiments based on the technical solution of the utility model, and these modifications still belong to the protection scope of the utility model.

Claims (5)

1. a kind of cable insulation situation on-line monitoring device, it is characterised in that：Including cable detecting device (1) and and cable detection Device (1) passes through the monitoring host computer (2) of network communication, temperature of the cable detecting device (1) including measuring cable surface temperature Spend detector (3), measure the current detector (4) and signal projector (5) of cable insulation earth current, the temperature detection Device (3) and current detector (4) are communicated with signal projector (5), and the monitoring host computer (2) includes and signal projector (5) What the signal receiver (6) of communication, the data-analyzing machine (7) communicated with signal receiver (6) and data-analyzing machine (7) were communicated Short message sender (8) and the mobile terminal (9) for receiving the information that short message sender (8) is sent, the short message sender (8) is with moving By network communication between dynamic terminal (9), the data-analyzing machine (7) includes displays temperature detector (3), current detector (4) display (10) of the parameter measured, the display (10) communicates with data-analyzing machine (7).

2. a kind of cable insulation situation on-line monitoring device according to claim 1, it is characterised in that：The temperature detection Communicated between device (3) and signal projector (5) by the first communication cable, the current detector (4) and signal projector (5) Between communicated by the second communication cable, be arranged with screen layer outside first communication cable and the second communication cable.

3. a kind of cable insulation situation on-line monitoring device according to claim 1, it is characterised in that：The signal transmitting Device (5) includes housing and is provided with stud with integral type on telescopic antenna on housing (11), the antenna (11) is fixed on, described Housing is provided with the screw coordinated with stud, the stud and is arranged with check washer.

4. a kind of cable insulation situation on-line monitoring device according to claim 1, it is characterised in that：The mobile terminal (9) include being provided with voice guard (12), the mobile terminal (9) and receive short message sender (8) hair in mobile terminal (9) Control to be additionally provided with control alarm on the controller (13) of voice guard (12) ring, the mobile terminal (9) after the short message gone out Device stops the control button (14) of ring, and the control button (14) communicates with controller (13).

5. a kind of cable insulation situation on-line monitoring device according to Claims 1-4 any one, it is characterised in that： The monitoring host computer (2) also includes being integrated with according to data-analyzing machine in light alarm apparatus (15), the data-analyzing machine (7) (7) control is additionally provided with the control module (16) that analysis result control light alarm apparatus (15) is lighted, the data-analyzing machine (7) The control button (17) that light alarm apparatus (15) processed is extinguished, the control button (17) communicates with control module (16).