Automatic temperature measurement and alarm system for substation site

Abstract

The utility model discloses an automatic temperature measurement alarm system for a substation site, which belongs to the technical field of substation temperature monitoring equipment and comprises a plurality of thermal imaging ball machines, an optical fiber transceiver, a landing switch, a core switch, a monitoring background, an MES (Manufacturing Execution System) and a user terminal, the thermal imaging ball machine is connected with the optical fiber transceiver through an optical fiber, the optical fiber transceiver is connected with the landing switch through a network cable, the landing switch is connected with the core switch through a network cable, the core switch is connected with the monitoring background, the monitoring background is provided with an API interface, the MES is connected with the monitoring background through the API interface, and the MES is in signal connection with the user terminal. The 220kV area, the main transformer area, the 110kV area and the capacitor area of the transformer substation are all provided with thermal imaging ball machines, and the problems that in the prior art, detection and analysis of the operation temperature in the site of an unattended transformer substation such as a Tongpermanent station are insufficient, the operation condition of equipment cannot be known in time, and orderly development of all work is affected are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of substation temperature monitoring equipment, and particularly relates to an automatic temperature measurement and alarm system for substation sites. Background Technique

[0002] Tongyong Substation is an unattended substation. Inspections are carried out by specific staff of Yongxiang. The equipment in the site of Yongxiang No. 2 Substation needs to be inspected regularly, and one person is required to monitor the monitoring screen. At the same time, there are a certain number of switching operations in the second substation. The inspection frequency of the equipment in Tongyong Substation is relatively low, and it is often impossible to monitor the abnormal situation of equipment overheating in time. In practice, the lack of attention of staff to online temperature measurement work affects the orderly development of various work. To solve this problem, it is necessary to strengthen the detection and analysis of the operating temperature in the substation site.

[0003] The current online temperature measurement technologies are as follows:

[0004] 1. Point-type temperature sensing technology. The key of point-type temperature sensing technology is to measure and analyze temperature points through temperature sensors, and then transmit the measurement data to the background. Mainly, the data is displayed through temperature sensors, and the data is compared and analyzed, and targeted measurements are carried out on important positions to strengthen the detection results of important positions. Although the application of this temperature detection technology is relatively extensive, it has certain limitations. Since this method is fixed analysis, strengthening the key differences of the detected equipment, it is impossible to comprehensively detect temperature. Secondly, at the high-voltage cable, there is a high induced electricity, which will interfere with the sensor to a certain extent, resulting in inaccurate data. At the same time, this direct-contact sensor has certain safety hazards.

[0005] 2. Online detection technology based on thermal effect. The online detection technology based on thermal effect is to use thermal effect equipment to realize online temperature detection. It uses an infrared thermal imager to detect the temperature of the busbar and the surface of the equipment, and calculates the temperature manually through comprehensive data to determine the temperature situation in the busbar and the equipment, and then analyzes whether the temperature meets the operation requirements. This technology has high requirements for the professional technology of staff, and the staff must have a high sense of responsibility. Otherwise, once the judgment is wrong, it will inevitably lead to safety hazards in the circuit and operation, resulting in inaccurate data and ultimately affecting the calculation results.

[0006] 3. Non-contact infrared temperature sensing technology. This kind of temperature sensing technology uses an integrated infrared thermometer. Its sensor, optical system and electronic circuit are integrated together in a stainless steel housing, which has the characteristics of small size, convenient installation and resistance to electromagnetic interference. Generally, this kind of temperature sensor is paired with a display instrument, and the data is transmitted to the background through a communication interface. This data can be stored on the display instrument for about 8 years. However, this kind of sensor needs to be installed about 1 meter away from the temperature measurement point. The installation is restricted and does not meet the safety distance. At the same time, this kind of sensor is greatly affected by the weather and cannot be exposed to rain. It will affect the measurement results in windy weather.

[0007] 4. Adopt wireless temperature measurement technology. Use wireless temperature sensors to transmit the measured temperature to the temperature measurement communication terminal, and then through the 485 interface to the temperature measurement workstation. Finally, one or several temperature measurement workstations summarize to the temperature measurement management center together. The probe of the wireless temperature sensor has a unique code, which can accurately reflect the position of this point. The sensor and the temperature measurement terminal are wirelessly connected and can measure online for 24 hours. However, this kind of sensor is not suitable for installation on live busbars of 110 kV and above. Power outage is required during installation, and there is a certain risk after operation. At the same time, the wireless transmission distance is limited when there are buildings and other objects, and the transmission signal will also be weakened. Utility Model Content

[0008] The utility model aims to solve the problems in the prior art that the detection and analysis of the operating temperature in the site of unattended substations such as Tongyong Substation are insufficient, the operating conditions of equipment cannot be understood in time, which affects the orderly progress of various works, and even there are potential safety hazards.

[0009] In order to achieve the above invention purpose, the technical solution of the utility model is as follows:

[0010] An automatic temperature measurement and alarm system for substation sites includes several thermal imaging dome cameras, as well as optical fiber transceivers, floor switches, core switches, monitoring backends, MES and user terminals. The thermal imaging dome cameras are used to collect the temperature of the location and images of monitoring points. The thermal imaging dome cameras are connected to the optical fiber transceivers through optical fibers, the optical fiber transceivers are connected to the floor switches through network cables, the floor switches are connected to the core switches through network cables, the core switches are connected to the monitoring backends, the monitoring backends are provided with API interfaces, MES is connected to the monitoring backends through the API interfaces, and MES is signal-connected to the user terminals. Thermal imaging dome cameras are installed in the 220 kV area, main transformer area, 110 kV area and capacitor area of the substation.

[0011] Further, two thermal imaging dome cameras are installed in the main transformer area of the substation.

[0012] Further, one thermal imaging dome camera is respectively set in the 220 kV area, 110 kV area and capacitor area of the substation.

[0013] Furthermore, each thermal imaging dome camera is set with ten preset positions to inspect ten sites respectively.

[0014] Furthermore, multiple layer station switches are provided.

[0015] Furthermore, multiple layer station switches are connected to the core switch after being aggregated via network cables.

[0016] Advantages of the utility model:

[0017] First, in the utility model, the proposed automatic temperature measurement and alarm system for substation sites can timely understand the operation status of equipment, quickly take measures when problems are found, and prevent the expansion of accidents due to the inability to timely know and take measures during accidents. In this automatic temperature measurement and alarm system, thermal imaging dome cameras are selected to monitor the temperature of various areas such as the 220 kV area, main transformer area, 110 kV area, and capacitor area of the substation, which can achieve "one machine for multiple points" and reduce the number of temperature measurement devices. The thermal imaging dome camera can rotate 360°, and one thermal imaging dome camera can measure the temperature information of multiple positions, not limited to a certain point; compared with point-type temperature sensors, the number of devices is reduced, and at the same time, the installation risk is reduced; compared with infrared temperature measurement sensors, it is less affected by strong wind weather and does not require rain protection measures; compared with wireless temperature measurement sensors, the influence of abnormal weather and transmission distance is reduced, making the background data more accurate and ensuring the timeliness of the data transmitted to the background. In addition, in this solution, multiple thermal imaging dome cameras are used to separately monitor the four major areas of the 220 kV area, main transformer area, 110 kV area, and capacitor area of the substation, with more accurate information and less error.

[0018] Second, in the utility model, two thermal imaging dome cameras are installed in the main transformer area of the substation, and one thermal imaging dome camera is respectively set in the 220 kV area, 110 kV area, and capacitor area. The appropriate number of thermal imaging dome cameras is installed according to the situation of the substation to ensure in-place temperature monitoring of the area where they are located and reduce errors.

[0019] Third, in the utility model, each thermal imaging dome camera is set with ten preset positions to inspect ten sites respectively, realizing comprehensive temperature monitoring of the area to be monitored.

[0020] Fourth, in the utility model, the final inspection data of the thermal imaging dome camera will be transmitted into the MES (production management system), and personnel with permission to enter the MES can view the temperature situation of the substation, which is convenient for timely understanding and mastering the operation status of the equipment. It is no longer necessary for the on-duty personnel to view it in the background and then give feedback, indirectly shortening the communication time and avoiding the inability to timely discover the problems existing in the substation due to the time difference of information acquisition caused by communication, and missing the best emergency rescue time for dealing with faults / accidents.

[0021] 5. In the present utility model, MES can compare the real-time data received from the substation with the preset value. Once the preset value is exceeded, a warning is issued, and the warning signal is sent to the corresponding user terminal to prompt the relevant personnel to take measures in a timely manner, facilitating the timely handling of faults, reducing the abnormal operation time of the equipment, reducing the insulation damage of the equipment, and even reducing the number of times of equipment outage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present utility model.

[0023] Figure 2 is a structural schematic diagram of another embodiment of the present utility model.

[0024] Figure 3 is a distribution diagram of thermal imaging dome cameras.

[0025] Among them, 1. Thermal imaging dome camera; 2. Fiber optic transceiver; 3. Floor switch; 4. Core switch; 5. Monitoring background; 6. MES; 7. User terminal; 8. Optical fiber; 9. Network cable; 10. Substation; 11. 220 kV area; 12. Main transformer area; 13. 110 kV area; 14. Capacitor area; 5.1. API interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described in detail below in conjunction with the embodiments, but the embodiments of the present utility model are not limited thereto.

[0027] Embodiment 1

[0028] A substation site automatic temperature measurement and alarm system belongs to the technical field of substation temperature monitoring equipment, and includes a plurality of thermal imaging dome cameras 1, as well as a fiber optic transceiver 2, a floor switch 3, a core switch 4, a monitoring background 5, MES 6 and a user terminal 7. Refer to Figure 1 , the thermal imaging dome camera 1 is used to collect the temperature of the location and the images of the monitoring points. The thermal imaging dome camera 1 is connected to the fiber optic transceiver 2 through an optical fiber 8, the fiber optic transceiver 2 is connected to the floor switch 3 through a network cable 9, the floor switch 3 is connected to the core switch 4 through a network cable 9, the core switch 4 is connected to the monitoring background 5, the monitoring background 5 is provided with an API interface 5.1, MES 6 is connected to the monitoring background 5 through the API interface 5.1, and MES 6 is signal-connected to the user terminal 7. The 220 kV area 11, the main transformer area 12, the 110 kV area 13, and the capacitor area 14 of the substation 10 are all provided with thermal imaging dome cameras 1.

[0029] When the automatic temperature measurement and alarm system for the 10-site of the substation is in operation, the thermal imaging dome camera 1 transmits the collected temperature, image and other information to the fiber optic transceiver 2 through the optical fiber 8. The fiber optic transceiver 2 transmits the information data to the floor switch 3 through the network cable 9. The floor switch 3 then transmits the information data to the core switch 4 through the network cable 9. The core switch 4 then uploads the information data to the monitoring background 5. The monitoring background 5 can process and analyze the received information data. MES 6 makes data calls through the API interface 5.1 of the monitoring background 5. When an abnormality occurs, MES 6 pushes / alerts through the information of the designated personnel of the reserved user terminal 7.

[0030] Embodiment 2

[0031] This embodiment is a further optimization of Embodiment 1. The difference is that two thermal imaging dome cameras 1 are installed in the main transformer area 12 of the substation 10.

[0032] Preferably, one thermal imaging dome camera 1 is respectively arranged in the 220 kV area 11, 110 kV area 13 and capacitor area 14 of the substation 10, for reference Figure 3 .

[0033] Embodiment 3

[0034] Compared with Embodiments 1-2, the difference in this embodiment is that

[0035] Each thermal imaging dome camera 1 is provided with ten preset positions and patrols ten sites respectively.

[0036] Embodiment 4

[0037] Compared with Embodiments 1-3, the difference in this embodiment is that

[0038] Multiple floor switches 3 are provided, for reference Figure 2 . Preferably, multiple floor switches 3 are connected to the core switch 4 after being aggregated through the network cable 9.

[0039] Embodiment 5

[0040] To facilitate the public's understanding of this solution, this embodiment takes a certain Tongyong Station of Yongxiang as an example to further illustrate the present utility model. The Tongyong Station is an unattended substation. The previous inspections were carried out by the personnel of Yongxiang Second Station. The equipment in the site of Yongxiang Second Station needs to be inspected regularly, and one person also needs to be left to monitor the pictures. At the same time, there are a certain number of switching operations in the second station, and the inspection frequency of the equipment in the Tongyong Station is relatively low, resulting in the abnormal situation that the over-temperature of the equipment cannot be monitored in time.

[0041] To solve this problem, a substation site automatic temperature measurement and alarm system is now added to the Tongyong Station, for reference Figure 2 、 3, the system includes several thermal imaging dome cameras 1, as well as optical fiber transceivers 2, floor switches 3, core switches 4, monitoring backends 5, MES 6, and user terminals 7. The thermal imaging dome cameras 1 are used to collect the temperature at the location and the images of the monitoring points. The thermal imaging dome cameras 1 are connected to the optical fiber transceivers 2 through optical fibers 8. The optical fiber transceivers 2 are connected to the floor switches 3 through network cables 9. The floor switches 3 are connected to the core switch 4 through network cables 9. The core switch 4 is connected to the monitoring backend 5. The monitoring backend 5 is provided with an API interface 5.1. MES 6 is connected to the monitoring backend 5 through the API interface 5.1. MES 6 is signal-connected to the user terminal 7. The 220 kV area 11, main transformer area 12, 110 kV area 13, and capacitor area 14 of the substation 10 are all provided with thermal imaging dome cameras 1.

[0042] In this embodiment, two thermal imaging dome cameras 1 are installed in the main transformer area 12 of the substation 10; one thermal imaging dome camera 1 is respectively set in the 220 kV area 11, 110 kV area 13, and capacitor area 14 of the substation 10. Refer to Figure 3 .

[0043] In this embodiment, each thermal imaging dome camera 1 is provided with ten preset positions, and ten sites are respectively inspected, realizing "one machine for multiple points" and reducing the use of temperature sensors. The thermal imaging dome camera 1 can collect the temperature of the monitoring site. At the same time, if the temperature is abnormal, it can collect the image of the monitoring site and upload and save the relevant image, which is convenient for personnel to patrol and find the heating point.

[0044] In this embodiment, multiple floor switches 3 are provided; multiple floor switches 3 are connected to the core switch 4 after being aggregated through network cables 9.

[0045] When the substation 10 site automatic temperature measurement and alarm system is running, the inspection frequency is set (such as once every two hours, adjusted to once every hour in summer), and the equipment covered by the thermal imaging dome camera 1 is periodically patrolled. The thermal imaging dome camera 1 transmits the collected temperature, image and other information to the optical fiber transceiver 2 through the optical fiber 8. The optical fiber transceiver 2 transmits the information data to the floor switch 3 through the network cable 9. The floor switch 3 then aggregates the information data to the core switch 4 through the network cable 9. The core switch 4 then uploads the information data to the monitoring backend 5. The monitoring backend 5 can process and analyze the received information data. MES 6 makes data calls through the API interface 5.1 of the monitoring backend 5; the alarm temperature value is set (such as the alarm high value: 80 °C and the alarm very high value: 110 °C in this solution), and different treatment measures can be taken according to the ambient temperature for different temperatures. When an abnormality occurs, MES 6 pushes / alerts through the information of the designated personnel of the reserved user terminal 7.

[0046] For example, when an exception occurs, a pop-up window and a sound prompt are given in the background in a timely manner. Different sound prompts can be adopted for the high alarm value and the extremely high alarm value respectively. At the same time, it is transmitted to MES6, and is pushed to the designated personnel through MES6, enabling timely measures to be taken, which is conducive to the safe and stable operation of the equipment.

[0047] The automatic temperature measurement and alarm system for the 10-site of this substation can transmit the inspection and alarm data to MES6 in a timely manner. Personnel with permission to enter MES6 can view the temperature situation of the 10-site of the substation, and can more conveniently and quickly master the operation of the equipment.

[0048] In this embodiment, under normal circumstances, data is uploaded according to the set inspection frequency. However, the thermal imaging camera 1 is constantly measuring temperature in a cycle. When an over-temperature event occurs outside the inspection frequency, the data can still be synchronously uploaded to the monitoring background 5 and MES6, and the alarm information is pushed. Compared with other on-line temperature measurement methods, the data collection is reduced, the bearing capacity and operation ability of the system are improved, and the abnormal information is more convenient to find, without causing data accumulation.

Claims

1. The substation site automatic temperature measurement and alarm system is characterized by: The invention comprises a plurality of thermal imaging dome cameras (1), an optical fiber transceiver (2), a floor switch (3), a core switch (4), a monitoring backend (5), an MES (6) and a user terminal (7). The thermal imaging dome camera (1) is used to collect the temperature of a location and the image of a monitoring point. The thermal imaging dome camera (1) is connected to the optical fiber transceiver (2) via an optical fiber (8). The optical fiber transceiver (2) is connected to the floor switch (3) via a network cable (9). The floor switch (3) is connected to the core switch (4) via the network cable (9). The core switch (4) is connected to the monitoring backend (5). The monitoring backend (5) is provided with an API interface (5.1). The MES (6) is connected to the monitoring backend (5) via the API interface (5.1). The MES (6) is connected to the user terminal (7) by signal. The 220 kV area (11), the main transformer area (12), the 110 kV area (13) and the capacitor area (14) of the substation (10) are all provided with thermal imaging dome cameras (1).

2. According to claim 1, the substation site automatic temperature measurement and alarm system is characterized by: Two thermal imaging dome cameras (1) are installed in the main transformer area (12) of the transformer substation (10).

3. The substation site automatic temperature measurement and alarm system according to claim 2 is characterized by: A thermal imaging dome camera (1) is respectively provided in the 220 kV area (11), the 110 kV area (13) and the capacitor area (14) of the transformer substation (10).

4. The substation site automatic temperature measurement and alarm system according to claim 3 is characterized by: Each thermal imaging dome camera (1) is provided with ten preset positions, which inspect ten positions respectively.

5. According to claim 1, the substation site automatic temperature measurement and alarm system is characterized by: The floor station switches (3) are provided in plurality.

6. The substation site automatic temperature measurement and alarm system according to claim 5 is characterized by: Multiple layer station switches (3) are connected to the core switch (4) via network cables (9).

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