CN207456618U - A kind of ring-main unit temperature of cable junction monitoring device - Google Patents

Abstract

The utility model provides a temperature monitoring device for a cable joint of a ring network unit, which includes a cable joint temperature measurement unit, a monitoring unit and a background service unit. The cable joint temperature measurement unit includes a main control module, a temperature sensor, a transmission module, and a wireless communication transmission module. , the monitoring unit includes a controller, a display module, a wireless communication receiving module, and a remote communication module. The background service unit includes a communication adapter, a server, and a unified alarm module. The temperature sensor measures the temperature of the cable joint in real time and transmits it to the main Control module, according to the control of the main control module, the temperature data is transmitted to the controller through the wireless communication transmitting and receiving module, and displayed visually through the display module, and at the same time transmitted to the server through the remote communication module and communication adapter. When an over-limit event occurs, According to the preset early warning threshold and alarm threshold, the server can perform timely early warning and alarm through the unified alarm module, which improves the reliability of the distribution network operation.

Description

A ring network unit cable joint temperature monitoring device

Technical field:

The utility model relates to the technical field of distribution network, in particular to a temperature monitoring device for a cable joint of a ring network unit of a distribution network.

Background technique:

With the development of science and technology, realizing the automation of medium and low voltage distribution network has become the development trend of power system, and it is an important means to improve the quality of power supply, the reliability of power consumption and the level of power enterprises themselves.

The ring network unit is a group of high-voltage switchgear installed in the steel plate metal cabinet or made into an assembled spaced ring network power supply unit. Its core part uses load switches and fuses. It has simple structure, small size, low price, and can be Improve power supply parameters and performance and power supply security and other advantages. It is widely used in distribution stations and box-type substations of load centers such as urban residential quarters, high-rise buildings, large public buildings, factories and enterprises.

The ring network unit is a secondary power distribution equipment. The secondary power distribution equipment refers to the medium-voltage switchgear that redistributes the electric energy of the primary power distribution equipment that is powered by the high-voltage transformer. The basic components of secondary power distribution equipment are load switches and current-limiting fuses, which are not only economical, but also have good protection characteristics, so they are widely used in urban and rural power grids.

With the development of electric power informatization, networking and intelligence, not only the equipment of the ring network unit is required to be safe and reliable, but also intelligent functions are required, and the main fault point in the ring network unit—the temperature of the cable joint is required to be monitored online. Avoid ablation and ignition caused by poor contact of cable joints and quality problems of ferrules, and eliminate hidden troubles.

At present, the collection of the temperature of the cable joints in the ring network unit generally relies on the staff to go to the site to measure the temperature by artificial infrared or observe the temperature-changing stickers. Adapt to the requirements of social and economic growth and the development of power supply enterprises. Therefore, there is an urgent need to build an online monitoring system for the temperature of the cable joints of the ring network unit, which can meet the requirements and configurations of real-time and comprehensive control of the information on the fault-prone points, daily status inspection, pre-fault warning, and fault alarm, and realize condition-based maintenance. network automation needs.

Utility model content:

Aiming at the defects in the prior art, the utility model provides a temperature monitoring device for cable joints of ring network units, which can provide timely early warning and timely alarm, and can improve the reliability and efficiency of distribution network operation.

In order to achieve the above object, the utility model adopts the following technical scheme: a ring network unit cable joint temperature monitoring device is provided, including a cable joint temperature measurement unit, a monitoring unit and a background service unit, the output end of the cable joint temperature measurement unit is connected to the The input end of the monitoring unit is connected, and the output end of the monitoring unit is connected to the input end of the background service unit; the cable joint temperature measurement unit includes a main control module, a temperature sensor, a transmission module, a power module, and an opening CT, short-circuit protection module, wireless communication transmitting module; the monitoring unit includes a controller, a display module, a wireless communication receiving module, and a remote communication module; the background service unit includes a communication adapter, a server and a unified alarm module; the power supply module To supply power to the main control module, the transmission module and the wireless communication transmitting module, the opening CT is connected to the power module, the short circuit protection module is connected to the power module; the output terminal of the temperature sensor is connected to the The input end of the transmission module is connected, the output end of the transmission module is connected with the input end of the main control module, the output end of the main control module is connected with the input end of the wireless communication transmission module, and the wireless The output end of the communication transmitting module is connected to the input end of the wireless communication receiving module, the output end of the wireless communication receiving module is connected to the input end of the controller, and the output end of the controller is connected to the display module The input end is connected, the output end of the controller is connected with the remote communication module, the remote communication module is connected with the communication adapter, the communication adapter is connected with the server, the output end of the server is connected with the The input connection of the unified alarm module is described above.

The transmission module adopts a temperature transmitter.

The unified alarm module includes sound and light alarm equipment and sending alarm equipment, the sound and light alarm equipment is controlled by the server to perform sound and light alarm, the sending alarm equipment has a built-in SIM card, and is controlled by the server to preset Send an alarm text message to the specified mobile phone number.

The controller adopts a single-chip microcomputer controller.

The remote communication module includes a SIM card, optical fiber communication equipment, and Ethernet communication equipment.

Compared with the prior art, the utility model has the beneficial effects:

The utility model comprises a cable joint temperature measuring unit, a monitoring unit and a background service unit. The cable joint temperature measuring unit includes a main control module, a temperature sensor, a transmission module, and a wireless communication transmitting module. The monitoring unit includes a controller, a display module, a wireless communication receiving module, and a remote communication module. The background service unit includes a communication adapter, a server and a unified alarm module. The temperature sensor measures the temperature of the cable joint in real time and transmits it to the main control module through the transmission module , according to the control of the main control module, the measured temperature data is transmitted to the controller through the wireless communication transmitting and receiving module, and is visually displayed through the display module, and is transmitted to the server through the remote communication module and the communication adapter at the same time. In the event of an event, according to the pre-set early warning threshold and alarm threshold of the server, the server can perform timely early warning and timely alarm through the unified alarm module, locate the fault point and fault event, shorten the power outage time of the user, reduce the power outage area, and reduce the power distribution inspection. A large number of repetitive work by personnel can improve the reliability and efficiency of distribution network operation, reduce labor intensity, and reduce operation and maintenance costs.

Description of drawings:

Fig. 1 is a structural block diagram of a ring network unit cable joint temperature monitoring device provided by an embodiment of the present invention;

In the figure: 1-cable joint temperature measurement unit, 2-monitoring unit, 3-background service unit.

Detailed ways:

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

As shown in FIG. 1 , the utility model provides a temperature monitoring device for a cable joint of a ring network unit, which includes a cable joint temperature measurement unit 1 , a monitoring unit 2 and a background service unit 3 .

The output end of the cable joint temperature measurement unit 1 is connected to the input end of the monitoring unit 2, and the output end of the monitoring unit 2 is connected to the input end of the background service unit 3; the cable joint temperature measurement unit 1 It includes a main control module, a temperature sensor, a transmission module, a power module, an opening CT, a short circuit protection module, and a wireless communication transmitting module; the monitoring unit 2 includes a controller, a display module, a wireless communication receiving module, and a remote communication module; The background service unit 3 includes a communication adapter, a server and a unified alarm module.

The opening CT is connected to the power module, and the opening CT is installed on the 10KV cable in the ring network unit, and is responsible for inducing a certain intensity of current to supply the power module, and the power module receives the current of the opening CT, which brings It has a sampling circuit, a rectification circuit, a pulse width modulation circuit, and a voltage and current stabilization circuit, and outputs a stable voltage/current for the main control module, the transmission module and the wireless communication transmission in the case of a current jump. The module is used as a driving power supply, and the short-circuit protection module is connected with the power module to protect the power module, mainly for short-circuit and current jump protection.

The temperature sensor measures the temperature of the cable joint in real time, the output end of the temperature sensor is connected to the input end of the transmission module, the output end of the transmission module is connected to the input end of the main control module, The transmission module adopts a temperature transmitter, converts the current or voltage value measured by the temperature sensor into a fixed format digital signal according to the temperature sensor temperature algorithm, and transmits it to the main control module, and the main control module receives each measurement point The measurement signal is used for data storage, communication control, protection control, process control, work/sleep control, clock time synchronization, normal mode/warning mode switching control, and early warning mode frequency increase call measurement control.

The output end of the main control module is connected to the input end of the wireless communication transmitting module, the output end of the wireless communication transmitting module is connected to the input end of the wireless communication receiving module, and the output end of the wireless communication receiving module It is connected with the input end of the controller, and the controller adopts a single-chip controller, and the controller is the core part of the monitoring unit 2, which includes functions of data storage, data processing, process control, communication control, and information sequence control , the main control module controls the wireless communication transmitting module to send data, and then transmits the data to the controller through the wireless communication receiving module, the output terminal of the controller is connected to the input terminal of the display module, and the temperature The data information is displayed on the display screen of the display module, and at the same time, the output terminal of the controller is connected to the remote communication module, the remote communication module is connected to the communication adapter, and the communication adapter is connected to the server , the temperature data is transmitted to the server through the remote communication module and the communication adapter, the output end of the server is connected to the input end of the unified alarm module, and when an overrun event occurs, according to the pre-set early warning threshold and alarm threshold of the server, The server can carry out timely early warning and timely alarm through the unified alarm module.

The unified alarm module includes an audible and visual alarm device and a sending alarm device. When an overrun event occurs, the audible and visual alarming device is controlled by the server to perform an audible and visual alarm. The sending alarm device has a built-in SIM card. The control of the above server sends an alarm message to the preset mobile phone number.

The remote communication module includes a SIM card, optical fiber communication equipment, and Ethernet communication equipment, and the controller can transmit various data to the server through the above transmission methods.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope defined by the claims of the utility model .

Claims (5)

1. a kind of ring-main unit temperature of cable junction monitoring device, which is characterized in that including：Cable connector temperature measuring unit, monitoring Unit and background service unit, the output terminal of the cable connector temperature measuring unit are connected with the input terminal of the monitoring unit, institute The output terminal for stating monitoring unit is connected with the input terminal of the background service unit；

The cable connector temperature measuring unit includes main control module, temperature sensor, transmitting module, power module, open C T, short circuit Protection module, wireless telecommunications transmitting module；The monitoring unit includes controller, display module, wireless telecommunications receiving module, remote Journey communication module；The background service unit includes communications adapter, server and unified alarm module；

The power module is described to open to the main control module, the transmitting module and wireless telecommunications transmitting module power supply Mouth CT is connected with power module, and the short circuit protection module is connected with power module；The output terminal of the temperature sensor and institute The input terminal connection of transmitting module is stated, the output terminal of the transmitting module is connected with the input terminal of the main control module, the master The output terminal of control module is connected with the input terminal of the wireless telecommunications transmitting module, the output terminal of the wireless telecommunications transmitting module It is connected with the input terminal of the wireless telecommunications receiving module, output terminal and the controller of the wireless telecommunications receiving module Input terminal connects, and the output terminal of the controller is connected with the input terminal of the display module, the output terminal of the controller and The remote communication module connection, the remote communication module are connected with the communications adapter, the communications adapter and institute Server communication connection is stated, the output terminal of the server is connected with the input terminal of the unified alarm module.

2. ring-main unit temperature of cable junction monitoring device according to claim 1, it is characterised in that：The transmitting module Using temperature transmitter.

3. ring-main unit temperature of cable junction monitoring device according to claim 1, it is characterised in that：The unified alarm Module includes sound-light alarm equipment and sends alert device, and the sound-light alarm equipment is carried out acousto-optic by the control of the server Alarm, SIM card built in the transmission alert device are sent to preset phone number by the control of the server and alarmed Short message.

4. ring-main unit temperature of cable junction monitoring device according to claim 1, it is characterised in that：The controller is adopted Use singlechip controller.

5. ring-main unit temperature of cable junction monitoring device according to claim 1, it is characterised in that：The telecommunication Module includes SIM card, optical-fibre communications equipment, ethernet communication equipment.