An electrical equipment thermal hazard monitoring device

Abstract

The utility model provides a kind of electrical equipment heat hidden danger monitoring device, including wireless temperature measurement node, network routing node and network coordinator node;The wireless temperature measurement node is used to measure the temperature data of electrical equipment, and is sent to network routing node by Zigbee network, network routing node sends the received data to network coordinator node, and network coordinator node uploads data to host computer;It further includes temperature acquisition device for collecting ambient temperature, and the temperature acquisition device is connected to host computer;First register, second register and third register are provided in the host computer.The utility model can automatically monitor the equipment operating temperature of transformer substation in real time, and is reliable and stable in operation, effectively ensures the normal operation of electrical equipment, and has simple structure, small size and easy installation.

Description

Technical Field

[0001] This utility model belongs to the field of safety monitoring technology, and in particular relates to a device for monitoring thermal hazards in electrical equipment. Background Technology

[0002] Electricity plays a vital role in our lives and production, bringing us immense convenience and serving as a crucial energy source. The most critical factor ensuring the normal operation and transmission of electricity in power plants is the electrical equipment. With the continuous advancement of smart substation construction, the requirements for the safe operation of power supply systems and the optimal condition of electrical equipment are becoming increasingly stringent. Aging, loosening, or poor contact in substation equipment such as contacts and busbars in switchgear can lead to excessive contact resistance, resulting in overheating and subsequent faults (such as fuse blowouts or tripping), posing unpredictable risks to the safe operation of the power system. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the shortcomings of the above-mentioned problems in the prior art and proposes an electrical equipment thermal hazard monitoring device to implement comprehensive online monitoring of the real-time operating temperature of power equipment in substations.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] An electrical equipment thermal hazard monitoring device includes a wireless temperature measurement node, a network routing node, and a network coordinator node. The wireless temperature measurement node is used to measure the temperature data of the electrical equipment and send it to the network routing node through a Zigbee network. The network routing node sends the received data to the network coordinator node, and the network coordinator node uploads the data to a host computer.

[0006] The wireless temperature measurement node includes a housing, inside which is a control circuit board. The control circuit board is equipped with a sensor unit, a control unit, a ZigBee module, and a power module. The sensor unit, power module, and ZigBee module are all electrically connected to the control unit via pins. The control unit includes a controller, a memory, and a comparator. The memory and comparator are electrically connected to the controller via pins.

[0007] It also includes a temperature acquisition device for collecting ambient temperature, which is connected to a host computer;

[0008] The host computer is equipped with a first register, a second register, and a third register. The first register is used to store data collected by the sensor unit, the second register is used to store data collected by the temperature acquisition device, and the third register is used to store the difference between the first register and the second register.

[0009] Furthermore, the wireless temperature measurement nodes are deployed at busbars, disconnectors, high-voltage switchgear, circuit breakers, and cable joints in the substation.

[0010] Furthermore, the network coordinator node uploads data to the host computer via Ethernet.

[0011] Furthermore, the sensor unit uses a TMP112 temperature sensor.

[0012] Furthermore, the host computer is also equipped with an alarm device.

[0013] Furthermore, the controller adopts a single-chip microcomputer minimum system.

[0014] Furthermore, the minimum system of the microcontroller includes a microcontroller, a power supply circuit, a clock circuit, a reset circuit, and an interface circuit, all of which are electrically connected to the microcontroller.

[0015] Furthermore, the host computer is also connected to a server.

[0016] Furthermore, the host computer is also connected to a smart terminal.

[0017] Furthermore, an amplifier, a filter, and an AD converter are also provided between the sensor unit and the control unit.

[0018] Compared with existing technologies, the electrical equipment thermal hazard monitoring device of this utility model has the following advantages:

[0019] This invention can automatically monitor the operating temperature of equipment in substations in real time, ensuring reliable and stable operation and effectively guaranteeing the normal operation of substation equipment. It has a simple structure, small size, and is easy to install. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of an electrical equipment thermal hazard monitoring device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the principle of an electrical equipment thermal hazard monitoring device according to the present invention.

[0023] Figure 3 This is a schematic diagram of the wireless temperature measurement node structure of this utility model.

[0024] Explanation of reference numerals in the attached figures

[0025] 1-Wireless temperature measurement node; 101-Housing; 102-Control circuit board; 103-Sensor unit; 104-Control unit; 1041-Controller; 1042-Memory; 1043-Comparator; 105-ZigBee module; 106-Power supply module; 107-Amplifier; 108-Filter; 109-AD converter; 2-Network routing node; 3-Network coordinator node; 4-Host computer; 401-First register; 402-Second register; 403-Third register; 404-Alarm device; 5-Temperature acquisition device; 6-Server; 7-Smart terminal. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figure 1-3As shown, this utility model provides an electrical equipment thermal hazard monitoring device, including a wireless temperature measurement node 1, a network routing node 2, and a network coordinator node 3; the wireless temperature measurement node 1 is used to measure the temperature data of the electrical equipment and send it to the network routing node 2 through the Zigbee network, the network routing node 2 sends the received data to the network coordinator node 3, and the network coordinator node 3 uploads the data to the host computer 4.

[0031] The wireless temperature measurement node 1 includes a housing 101, within which a control circuit board 102 is disposed. The control circuit board 102 includes a sensor unit 103, a control unit 104, a ZigBee module 105, and a power module 106. The sensor unit 103, power module 106, and ZigBee module 105 are all electrically connected to the control unit 104 via pins. The control unit 104 includes a controller 1041, a memory 1042, and a comparator 1043. The memory 1042 and comparator 1043 are electrically connected to the controller 1041 via pins. It should be noted that the control circuit board can be housed within the housing; its specific location and structure are not limited. Existing housings can be used. The various unit modules can be connected via pins; their specific connection relationships and locations are not limited, as long as data transmission can be achieved.

[0032] It also includes a temperature acquisition device 5 for collecting ambient temperature, which is connected to a host computer 4;

[0033] The host computer 4 is equipped with a first register 401, a second register 402, and a third register 403. The first register 401 is used to store data collected by the sensor unit 103, the second register 402 is used to store data collected by the temperature acquisition device 5, and the third register 403 is used to store the difference between the first register 401 and the second register 402.

[0034] As a further option, the wireless temperature measurement node 1 is deployed at the busbars, disconnectors, high-voltage switchgear, circuit breakers, and cable joints of the substation.

[0035] As a further solution, the network coordinator node 2 uploads data to the host computer 4 via Ethernet.

[0036] As a further option, the sensor unit 103 adopts a temperature sensor of model TMP112.

[0037] As a further solution, the host computer 4 is also equipped with an alarm device.

[0038] As a further option, the controller 1041 adopts a single-chip microcomputer minimum system.

[0039] As a further embodiment, the microcontroller minimum system includes a microcontroller, a power supply circuit, a clock circuit, a reset circuit, and an interface circuit, all of which are electrically connected to the microcontroller.

[0040] As a further option, the host computer 4 is also connected to the server 6.

[0041] As a further option, the host computer 4 is also connected to the smart terminal 7.

[0042] As a further embodiment, an amplifier 107, a filter 108, and an AD converter 109 are also provided between the sensor unit 103 and the control unit 104.

[0043] When this utility model is in operation, the transmission of the wireless temperature measurement node 1 adopts a MESH structure, with the network coordinator as the center. Each network routing node 2 and temperature measurement node can dynamically join or leave the network, and the data from each point is aggregated to the network coordinator node through a ZigBee-based wireless sensor network. The sensor data aggregated by the router node is then uploaded to the host computer 4 via Ethernet.

[0044] This invention deploys temperature measurement nodes at busbars, disconnectors, high-voltage switchgear, circuit breakers, cable joints, etc. in substations to measure the temperature of the temperature measurement nodes. In order to reduce energy consumption and extend the service life of the temperature measurement nodes, when the temperature is normal, the data is not sent to the network coordinator every time, but is temporarily stored in the memory of the temperature measurement node. The temperature data during the reporting interval is sent to the network coordinator periodically according to the set parameters.

[0045] Since the surface temperature of current-carrying components in electrical equipment varies with ambient temperature, it is theoretically higher than the operating environment temperature. Simply using a single temperature value or temperature rise as a criterion for normality or abnormality cannot accurately reflect whether there are potential thermal hazards in the current-carrying conductors of the electrical equipment. Furthermore, it can easily mislead the judgment and decisions of operation and maintenance personnel under both high and low ambient temperatures. Therefore, this invention utilizes a temperature acquisition device 5 to collect ambient temperature data and store it in a second register 402. When judging data anomalies, it first checks whether the data in the first register 401 exceeds a set threshold. If it does, it checks whether the data in the third register 403 exceeds a set threshold. If it does, a temperature anomaly is determined, and an alarm is triggered via an alarm device 404 to notify personnel to conduct inspections.

[0046] It should be noted that all functional modules used in this utility model are existing products, and their connection relationships are also conventional connection relationships in this field. They are not limited to specific models, as long as data transmission can be achieved.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for monitoring thermal hazards in electrical equipment, characterized in that: It includes a wireless temperature measurement node (1), a network routing node (2), and a network coordinator node (3); the wireless temperature measurement node (1) is used to measure the temperature data of electrical equipment and send it to the network routing node (2) through the Zigbee network. The network routing node (2) sends the received data to the network coordinator node (3), and the network coordinator node (3) uploads the data to the host computer (4). The wireless temperature measurement node (1) includes a housing (101), and a control circuit board (102) is provided inside the housing (101). The control circuit board (102) is provided with a sensor unit (103), a control unit (104), a ZigBee module (105), and a power module (106). The sensor unit (103), the power module (106), and the ZigBee module (105) are all electrically connected to the control unit (104) through pins. The control unit (104) includes a controller (1041), a memory (1042), and a comparator (1043). The memory (1042) and the comparator (1043) are electrically connected to the controller (1041) through pins. It also includes a temperature acquisition device (5) for collecting ambient temperature, the temperature acquisition device (5) being connected to a host computer (4); The host computer (4) is equipped with a first register (401), a second register (402), and a third register (403). The first register (401) is used to store data collected by the sensor unit (103), the second register (402) is used to store data collected by the temperature acquisition device (5), and the third register (403) is used to store the difference between the first register (401) and the second register (402).

2. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: The wireless temperature measurement node (1) is deployed at the busbars, disconnectors, high-voltage switchgear, circuit breakers, and cable joints of the substation.

3. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: The network coordinator node (3) uploads data to the host computer (4) via Ethernet.

4. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: The sensor unit (103) uses a TMP112 temperature sensor.

5. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: The host computer (4) is also equipped with an alarm device (404).

6. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: The controller (1041) adopts a single-chip microcomputer minimum system.

7. The electrical equipment thermal hazard monitoring device according to claim 6, characterized in that: The minimum system of the microcontroller includes a microcontroller, a power supply circuit, a clock circuit, a reset circuit, and an interface circuit. The power supply circuit, clock circuit, reset circuit, and interface circuit are all electrically connected to the microcontroller.

8. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: The host computer (4) is also connected to the server (6).

9. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: The host computer (4) is also connected to the smart terminal (7).

10. The electrical equipment thermal hazard monitoring device according to claim 1, characterized in that: An amplifier (107), a filter (108), and an AD converter (109) are also provided between the sensor unit (103) and the control unit (104).

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