CN111458610A - A ZigBee-based Temperature Rise and Partial Discharge Detection Device - Google Patents

Abstract

The invention relates to a ZigBee-based temperature rise and partial discharge detection device, comprising: an infrared sensor, used for detecting temperature information of electrical equipment; an ultraviolet sensor, used for detecting the ultraviolet pulse generated by the defect discharge of the electrical equipment; It is used to detect the temperature and relative humidity data of the environment; the microprocessor and the drive circuit, the drive circuit is respectively connected with the infrared sensor, the ultraviolet sensor and the temperature and humidity sensor, and the microprocessor; the ZigBee communication module is connected with the microprocessor and is used to connect with the microprocessor. Host computer communication. Compared with the prior art, the present invention can measure the temperature information and partial discharge amount of the detected electrical equipment by integrating the infrared sensor, the ultraviolet sensor and the temperature and humidity sensor, thereby improving the fault judgment accuracy of the electrical equipment.

Description

A ZigBee-based Temperature Rise and Partial Discharge Detection Device

technical field

The invention relates to the field of electrical equipment fault diagnosis, in particular to a ZigBee-based temperature rise and partial discharge detection device.

Background technique

When electrical equipment fails, it is often manifested as abnormal temperature or partial discharge of related parts. Therefore, the detection of temperature rise and partial discharge of electrical equipment can determine whether the equipment is faulty, so as to repair and replace electrical equipment in time, which is of great significance to improve the stability of the power system.

In order to detect the failure of electrical equipment, the current common methods are: built-in temperature sensor in the switch cabinet, and transmit temperature data through wireless communication to realize the monitoring of temperature rise; use infrared photoelectric sensor to detect the temperature rise of equipment; use ultraviolet photoelectric sensor and TEV sensor to detect local temperature. discharge. The above methods are all reasonable, but there are problems such as destroying the original insulation performance of the equipment, easy to misjudgment based on a single judgment basis, and unable to detect in real time.

At present, the fault detection device considers temperature and partial discharge independently, so the accuracy of fault diagnosis is not high.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a temperature rise and partial discharge detection device based on ZigBee, by integrating infrared sensor, ultraviolet sensor and temperature and humidity sensor, comprehensively considering the change relationship between temperature and partial discharge in the process of fault development, can respectively Detect the temperature information of electrical equipment and measure the partial discharge amount to improve the accuracy of fault judgment of electrical equipment.

The object of the present invention can be realized through the following technical solutions:

A ZigBee-based temperature rise and partial discharge detection device, comprising:

Infrared sensor for detecting temperature information of electrical equipment;

UV sensors for detecting UV pulses generated by electrical equipment defect discharges;

Temperature and humidity sensor, used to detect the temperature and relative humidity data of the environment;

a microprocessor and a driving circuit, the driving circuit is respectively connected with the infrared sensor, the ultraviolet sensor, the temperature and humidity sensor, and the microprocessor;

ZigBee communication module, connected with the microprocessor, used to communicate with the host computer.

The upper computer is a computer.

The upper computer is a workstation.

The device further includes a circuit board and a power supply, and the infrared sensor, the ultraviolet sensor, the temperature and humidity sensor, the driving circuit, the microprocessor, the power supply and the ZigBee communication module are all arranged on the circuit board.

The infrared sensor and the ultraviolet sensor are located at two top corners of the circuit board.

The circuit board is rectangular, and the connection line between the infrared sensor and the ultraviolet sensor is parallel to the broad side of the circuit board.

The ZigBee communication module is located at another top corner of the circuit board.

The microprocessor is configured to perform the following steps:

Step S1: query the data collected by the infrared sensor, the ultraviolet sensor and the temperature and humidity sensor according to the set time interval, and send it to the host computer through the ZigBee communication module;

Step S2: obtaining the partial discharge amount of the electrical equipment according to the ultraviolet pulse information output by the ultraviolet sensor;

Step S3: judging whether at least one of the temperature of the electrical equipment and the partial discharge amount exceeds the set threshold, if so, go to step S4, otherwise go to step S5;

Step S4: modify the set time interval to be T1, and send an evaluation request to the upper computer through the ZigBee communication module, wherein the evaluation request is used to instruct the upper computer to evaluate the state of the electrical equipment;

Step S5: Modify the set time interval to be T2, where T2 is greater than T1.

T1 is 1 minute.

T2 is 10 minutes.

Compared with the prior art, the present invention has the following beneficial effects:

1) By integrating infrared sensors, ultraviolet sensors and temperature and humidity sensors, the temperature information and partial discharge amount of the detected electrical equipment can be measured respectively, and the accuracy of fault judgment of electrical equipment can be improved.

2) Through the ZigBee communication module, the results of data fusion analysis can be displayed on the remote host computer, and maintenance personnel can take timely measures if a fault occurs.

3) When either of the temperature and partial discharge exceeds the limit, the data collection cycle of all sensors is controlled to be reduced, which can avoid missed detection due to cycle errors or insignificant temperature rise.

Description of drawings

Fig. 1 is a structural schematic diagram of a detection device;

2 is a schematic diagram of the use of the detection device to detect the fault of the insulator;

Fig. 3 is the working flow chart of the detection device;

In the figure: 1. Infrared sensor; 2. Ultraviolet sensor; 3. Temperature and humidity sensor; 4. Driving circuit; 5. Microprocessor; 6. Power supply; 7. ZigBee communication module; 8. Host computer.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

A ZigBee-based temperature rise and partial discharge detection device, as shown in Figure 1, includes:

Infrared sensor 1, used to detect temperature information of electrical equipment;

Ultraviolet sensor 2, used to detect ultraviolet pulses generated by electrical equipment defect discharge;

Temperature and humidity sensor 3, used to detect the temperature and relative humidity data of the environment;

The microprocessor 5 and the drive circuit 4, the drive circuit 4 is respectively connected with the infrared sensor 1, the ultraviolet sensor 2, the temperature and humidity sensor 3, and the microprocessor 5;

The infrared sensor 1, the ultraviolet sensor 2 and the temperature and humidity sensor 3 are electrically connected to the microprocessor 5 through the drive circuit 4. The infrared sensor 1, the ultraviolet sensor 2, the temperature and humidity sensor 3 and the drive circuit 4 constitute a data monitoring unit. , the ultraviolet sensor 2 and the temperature and humidity sensor 3 can respectively measure the temperature information and partial discharge amount of the detected electrical equipment, so as to improve the accuracy of fault judgment of the electrical equipment.

The ZigBee communication module 7 is connected to the microprocessor 5 for communicating with the upper computer 8 . Through the ZigBee communication module, the results of data fusion analysis can be displayed on the remote host computer, and maintenance personnel can take timely measures if a fault occurs.

The upper computer 8 is a computer, preferably, the upper computer 8 is a workstation.

As shown in Figure 2, taking an insulator as an example, a 10kV power frequency voltage is applied to both ends of the insulator during normal operation. If the insulator fails, the temperature of the insulator will increase due to the increase of leakage current, resulting in partial discharge, and then an ultraviolet pulse will be emitted. The microprocessor 5 packs the data detected by the three sensors and transmits it to the upper computer 8 through the ZigBee communication module 7 . The host computer 8 performs a fusion analysis on these data, and the analysis results are used to judge the operating state of the insulator: normal, minor fault, moderate fault, and serious fault. Maintenance personnel decide whether to repair or replace the insulator according to the operating state of the insulator.

The device also includes a circuit board and a power supply 6. An infrared sensor 1, an ultraviolet sensor 2, a temperature and humidity sensor 3, a driving circuit 4, a microprocessor 5, a power supply 6 and a ZigBee communication module 7 are all arranged on the circuit board.

Infrared sensor 1 and ultraviolet sensor 2 are located at the two top corners of the circuit board.

The circuit board is rectangular, and the connection lines of infrared sensor 1 and ultraviolet sensor 2 are parallel to the broad side of the circuit board.

The ZigBee communication module 7 is located at the other top corner of the circuit board.

The microprocessor 5 is configured to perform the following steps:

Step S1: query the data collected by the infrared sensor 1, the ultraviolet sensor 2 and the temperature and humidity sensor 3 according to the set time interval, and send it to the host computer 8 through the ZigBee communication module 7;

Step S2: obtaining the partial discharge amount of the electrical equipment according to the ultraviolet pulse information output by the ultraviolet sensor 2;

Step S3: judging whether at least one of the temperature of the electrical equipment and the partial discharge amount exceeds the set threshold, if so, go to step S4, otherwise go to step S5;

Step S4: modify the set time interval to be T1, and send an evaluation request to the upper computer 8 through the ZigBee communication module 7, wherein the evaluation request is used to instruct the upper computer 8 to evaluate the state of the electrical equipment, and the upper computer 8 to the data detection unit. The transmitted data is fused and analyzed to automatically evaluate the operation status of the equipment and improve the accuracy and efficiency of maintenance;

Step S5: Modify the set time interval to be T2, where T2 is greater than T1, T1 is 1 minute, and T2 is 10 minutes.

When either of the temperature and partial discharge exceeds the limit, the data collection cycle of all sensors is controlled to be reduced, which can avoid missed detection due to cycle errors or insignificant temperature rise.

Multiple ZigBee communication modules 7 can form a master-slave wireless communication network, and multiple detection device slaves can automatically form a network and transmit the detection data to the upper computer 8 .

Claims (10)

1. a temperature rise and partial discharge detection device based on ZigBee, is characterized in that, comprises: an infrared sensor (1) for detecting temperature information of electrical equipment; an ultraviolet sensor (2) for detecting the ultraviolet pulse generated by the electric equipment defect discharge; a temperature and humidity sensor (3) for detecting ambient temperature and relative humidity data; a microprocessor (5) and a drive circuit (4), wherein the drive circuit (4) is respectively connected with the infrared sensor (1), the ultraviolet sensor (2), the temperature and humidity sensor (3), and the microprocessor (5); The ZigBee communication module (7) is connected with the microprocessor (5) and is used for communicating with the upper computer (8). 2. A ZigBee-based temperature rise and partial discharge detection device according to claim 1, wherein the host computer (8) is a computer. 3. A ZigBee-based temperature rise and partial discharge detection device according to claim 2, wherein the host computer (8) is a workstation. 4. a kind of temperature rise and partial discharge detection device based on ZigBee according to claim 1, is characterized in that, described device also comprises circuit board and power source (6), described infrared sensor (1), ultraviolet sensor ( 2), the temperature and humidity sensor (3), the driving circuit (4), the microprocessor (5), the power supply (6) and the ZigBee communication module (7) are all arranged on the circuit board. 5. A ZigBee-based temperature rise and partial discharge detection device according to claim 4, wherein the infrared sensor (1) and the ultraviolet sensor (2) are located at two top corners of the circuit board. 6. a kind of temperature rise and partial discharge detection device based on ZigBee according to claim 5, is characterized in that, described circuit board is rectangular, and the connection line of infrared sensor (1) and ultraviolet sensor (2) and circuit board The broad sides are parallel. 7. A ZigBee-based temperature rise and partial discharge detection device according to claim 6, wherein the ZigBee communication module (7) is located at another top corner of the circuit board. 8. A ZigBee-based temperature rise and partial discharge detection device according to claim 1, wherein the microprocessor (5) is configured to perform the following steps: Step S1: query the data collected by the infrared sensor (1), the ultraviolet sensor (2) and the temperature and humidity sensor (3) according to the set time interval, and send it to the host computer (8) through the ZigBee communication module (7); Step S2: obtaining the partial discharge amount of the electrical equipment according to the ultraviolet pulse information output by the ultraviolet sensor (2); Step S3: judging whether at least one of the temperature of the electrical equipment and the partial discharge amount exceeds the set threshold, if so, go to step S4, otherwise go to step S5; Step S4: modify the set time interval to be T1, and send an evaluation request to the upper computer (8) through the ZigBee communication module (7), wherein the evaluation request is used to instruct the upper computer (8) to evaluate the state of the electrical equipment ; Step S5: Modify the set time interval to be T2, where T2 is greater than T1. 9 . The temperature rise and partial discharge detection device based on ZigBee according to claim 8 , wherein T1 is 1 minute. 10 . 10 . A ZigBee-based temperature rise and partial discharge detection device according to claim 8 , wherein T2 is 10 minutes. 11 .

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