CN104359591A - High-voltage cable coupling box temperature detection device - Google Patents

Abstract

The invention relates to a high-voltage cable coupling box temperature detection device, which comprises a digital signal processor DSP, a temperature detection unit, an ultratemperature warning unit and a display unit, wherein the temperature detection unit is positioned inside a high-voltage cable coupling box and used for measuring temperature inside the coupling box; the temperature detection unit is connected with the digital signal processor DSP which is used for acquiring data fed back by the temperature detection unit, and calculating and processing; the ultratemperature warning unit is respectively connected with the digital signal processor DSP and the display unit, the ultratemperature warning unit is used for reminding the ultratemperature fault, and the display unit is used for displaying the working state of the display system and the internal temperature condition of the coupling box. According to the technical scheme, the high-voltage cable coupling box temperature detection device has the advantages of being simple in structure, high in stability performance and good in real-time property and the like, and provides a basis for the technology of monitoring and evaluating the state of the high-voltage coupling box.

Description

A high-voltage cable junction box temperature detection device

technical field

The invention relates to a temperature detection device, which is suitable for temperature detection of high-voltage cable junction boxes.

Background technique

With the sharp increase in the scale and capacity of my country's power grid, the number of junction boxes for high-voltage cable connections is increasing. The high-voltage cable junction box is prone to failure due to temperature rise, which seriously affects the normal operation of the power grid system. According to incomplete statistics, 40% of cable accidents in my country are caused by connections in cable junction boxes.

At present, the maintenance of high-voltage cable junction boxes in my country's power grid system generally uses regular inspections by staff. It is believed that the status of the junction box is inspected. This method wastes a lot of labor, the inspection process is complicated, and the reliability is low, which seriously restricts the stability of the power grid system. performance and operational efficiency.

Contents of the invention

The purpose of the present invention is to provide a high-voltage cable junction box temperature detection device, which can automatically detect the temperature of the high-voltage cable junction box, save labor costs, and save the operating efficiency of the power grid system.

In order to achieve the purpose of the above invention, the technical solution adopted by the present invention is: a high-voltage cable junction box temperature detection device, including a digital signal processor DSP, a temperature detection unit, an over-temperature alarm unit and a display unit, and the temperature detection unit is located at the high-voltage The interior of the cable junction box is used for temperature measurement inside the junction box; the temperature detection unit is connected to the digital signal processor DSP, and the digital signal processor DSP is used to collect the data fed back by the temperature detection unit, and to calculate and Processing; the over-temperature alarm unit is connected to the digital signal processor DSP and the display unit respectively, the over-temperature alarm unit is used to prompt an over-temperature fault, and the display unit is used to display the working status and wiring of the system temperature inside the box.

In the above solution, the DSP model of the digital signal processor is TMS320F2812, its maximum data processing frequency can reach 150MHZ, it has a 12-bit 16-channel analog/digital converter, and the single-channel conversion time can reach 60ns.

In the above solution, the temperature detection unit is composed of temperature sensor AD590, LM358 operational amplifier and HCNR201 optocoupler. The temperature sensor AD590 is pasted on the internal terminal of the cable junction box. The output signal of the sensor is amplified by the LM358 operational amplifier and HCNR201 optocoupler. After coupled with the device, it is sent to the digital signal processor DSP.

In the above solution, the over-temperature alarm unit is composed of a buzzer and a light-emitting diode. When the temperature of the high-voltage cable junction box is too high, the digital signal processor DSP outputs a high level, the light-emitting diode flashes, and the buzzer sends out an alarm sound at the same time. Remind the staff to deal with over-temperature accidents.

Beneficial effects of the present invention: the adoption of the technical solution of the present invention has the advantages of simple structure, high stability and real-time performance, etc., and lays the foundation for the state monitoring and evaluation technology of the high-voltage junction box.

Description of drawings

Fig. 1 is the structure schematic diagram of the present invention.

In the figure: 1. Digital signal processor DSP; 2. Temperature detection unit; 3. Over-temperature alarm unit; 4. Display unit.

Detailed ways

As shown in Figure 1, a high-voltage cable junction box temperature detection device includes a digital signal processor DSP1, a temperature detection unit 2, an over-temperature alarm unit 3 and a display unit 4, and the temperature detection unit 2 is located inside the high-voltage cable junction box , for temperature measurement inside the junction box; the temperature detection unit 2 is connected to the digital signal processor DSP1, and the digital signal processor DSP1 is used to collect the data fed back by the temperature detection unit 2, and perform calculation and processing, Preferably, the model of the digital signal processor DSP1 is TMS320F2812, its maximum data processing frequency can reach 150MHZ, it has a 12-bit 16-channel analog-to-digital converter, and the single-channel conversion time can reach 60ns. The over-temperature alarm unit 2 is respectively connected with the digital signal processor DSP1 and the display unit 4, the over-temperature alarm unit 2 is composed of a temperature sensor AD590, an LM358 operational amplifier and an HCNR201 optocoupler, and the temperature sensor AD590 is pasted On the internal terminal of the cable junction box, the sensor output signal is sent to the digital signal processor DSP after being amplified by the LM358 operational amplifier and coupled by the HCNR201 optocoupler. The over-temperature alarm unit 3 is composed of a buzzer and a light-emitting diode. When the temperature of the high-voltage cable junction box is too high, the digital signal processor DSP outputs a high level, and the light-emitting diode flashes. At the same time, the buzzer sends out an alarm sound to remind the staff Handle over-temperature accidents. The display unit 4 is used to display the working state of the system and the internal temperature of the junction box.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. a high-tension cable terminal box temperature-detecting device, comprise digital signal processor DSP (1), temperature detecting unit (2), overtemperature alarm unit (3) and display unit (4), described temperature detecting unit (2) is positioned at high-tension cable junction box, for the temperature survey of junction box; Described temperature detecting unit (2) is connected with described digital signal processor DSP (1), and described digital signal processor DSP (1) is used for the data that collecting temperature detecting unit (2) feeds back, and carries out calculating and processing; Described overtemperature alarm unit (3) is connected with described display unit (4) with described digital signal processor DSP (1) respectively, described overtemperature alarm unit (3) is used for prompting overtemperature fault, and described display unit (4) is for the duty of display system and junction box temperature conditions.

2. a kind of high-tension cable terminal box temperature-detecting device according to claim 1, is characterized in that, the model of described digital signal processor DSP (1) is TMS320F2812.

3. a kind of high-tension cable terminal box temperature-detecting device according to claim 1, it is characterized in that, described temperature detecting unit (2) is made up of temperature sensor AD 590, LM358 operational amplifier and HCNR201 photoelectricity coupling device, described temperature sensor AD 590 is pasted onto on cable coupling box back panel wiring terminal, and described temperature sensor AD 590 output signal sends to described digital signal processor DSP (1) after LM358 operational amplifier operation amplifier and the coupling of HCNR201 photoelectricity coupling device.

4. a kind of high-tension cable terminal box temperature-detecting device according to claim 1, is characterized in that, described overtemperature alarm unit (3) is made up of hummer and light emitting diode.