Grounding current value monitoring device of oil-immersed transformer
By installing current detectors and servers on oil-immersed transformers, the grounding current value is monitored in real time and transmitted to a remote host computer, solving the problem of low grounding current monitoring efficiency of oil-immersed transformers and achieving efficient and safe grounding current monitoring.
Patent Information
- Application Number
- CN202422757554.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The existing technology for monitoring the ground current of oil-immersed transformers has low efficiency and poses a risk of electric shock, and the measurement preparation work is cumbersome.
Design a grounding current monitoring device for oil-immersed transformers, including a primary server, a backup server, and multiple current detectors. The grounding current value is measured in real time by Hall sensors and transmitted to a remote host computer by the primary and backup servers, realizing safe and redundant data transmission and monitoring.
It enables real-time monitoring of the grounding current value of oil-immersed transformers, eliminating the need for manual measurement, improving monitoring efficiency, and still functioning normally even when the server fails, significantly enhancing monitoring efficiency and security.
Smart Images
Figure CN223450043U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power system technical field especially is related to a grounding current value monitoring devices of oil immersed transformer. BACKGROUND
[0002] With the rapid development of the whole society economy level, the demand of society to electric power also increases accordingly, therefore, it is important to guarantee the operation stability of electric power system. In the operation process of electric power system, whether the transformer can operate stably relates to whether the electric power system can operate normally. Therefore, in the electric power production operation, it is necessary to monitor the grounding current of transformer, especially oil immersed transformer, to monitor whether the transformer operates normally.
[0003] At present, when monitoring the grounding current of oil immersed transformer, the measurement personnel need to wear insulating gloves, wear working clothes and insulating shoes, and clamp the hand-held clamp-on ammeter on the grounding flat iron of the transformer grounding assembly of oil immersed transformer to measure the grounding current value, so as to monitor the grounding current value of oil immersed transformer. At the same time, the preparation work of measurement is relatively complicated, and there is a certain risk of electric shock based on manual monitoring, which further leads to the low monitoring efficiency of the grounding current value of oil immersed transformer. SUMMARY
[0004] Therefore, the utility model provides a grounding current value monitoring devices of oil immersed transformer, and the main purpose is to solve the technical problem of low monitoring efficiency of the grounding current value of oil immersed transformer.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a grounding current value monitoring devices of oil immersed transformer at first, which is used for monitoring the grounding current value of the transformer grounding assembly of oil immersed transformer. The device comprises a main server, a standby server and a plurality of current detectors.
[0006] Each current detector is arranged at the transformer grounding assembly, and is used for measuring the grounding current value of the transformer grounding assembly.
[0007] The signal receiving end of the main server is connected with the first signal output end of each current detector, and is used for acquiring the measured grounding current value of each current detector.
[0008] The signal receiving end of the standby server is connected with the second signal output end of each current detector, and is used for acquiring the measured grounding current value of each current detector.
[0009] The signal output end of the main server and the signal output end of the standby server are connected with the upper computer of remote end respectively, so as to send the measured grounding current value of each current detector to the upper computer.
[0010] In one embodiment of the present application, the standby server and each of the current detectors are connected in a ring topology network.
[0011] In one embodiment of the present application, the current detector comprises a Hall sensor, a processing unit and a remote communication unit; the Hall sensor is arranged at the transformer grounding assembly and is used to measure the grounding current value of the transformer grounding assembly; the signal receiving end of the processing unit is connected with the signal output end of the Hall sensor and is used to receive the grounding current value; the signal interaction end of the remote communication unit is connected with the first signal interaction end of the processing unit and is used to acquire the grounding current value from the processing unit and send the grounding current value to the primary server and the standby server.
[0012] In one embodiment of the present application, the Hall sensor comprises a Hall unit and a signal conversion unit; the Hall unit is arranged at the transformer grounding assembly and is used to measure the grounding current value of the transformer grounding assembly; the signal receiving end of the signal conversion unit is connected with the signal output end of the Hall unit and is used to acquire the grounding current value and perform analog-digital conversion on the grounding current value to obtain the grounding current value in the form of digital signal; the signal output end of the signal conversion unit is connected with the signal receiving end of the processing unit and is used to send the grounding current value to the processing unit.
[0013] In one embodiment of the present application, the current detector further comprises a storage unit; the signal interaction end of the storage unit is connected with the second signal interaction end of the processing unit and is used to store the grounding current value.
[0014] In one embodiment of the present application, the current detector further comprises a man-machine interaction unit; the signal interaction end of the man-machine interaction unit is connected with the third signal interaction end of the processing unit and is used to acquire the grounding current value and display the grounding current value.
[0015] In one embodiment of the present application, the man-machine interaction unit is a serial touch screen.
[0016] In one embodiment of the present application, the device further comprises a first wireless communication unit and a second wireless communication unit; the first wireless communication unit is connected with the primary server and is used to establish a communication connection between the primary server and a wireless terminal at a remote end; the second wireless communication unit is connected with the standby server and is used to establish a communication connection between the standby server and a wireless terminal at a remote end.
[0017] In an embodiment of the utility model, the current detector further includes an alarm unit; a signal receiving end of the alarm unit is connected with an alarm output end of the processing unit.
[0018] In an embodiment of the utility model, the alarm unit is an alarm lamp or a buzzer.
[0019] The grounding current value monitoring device of the oil-immersed transformer provided by the utility model firstly, through the current detector arranged at the transformer grounding assembly of the oil-immersed transformer, the grounding current value at the transformer grounding assembly of the oil-immersed transformer is measured in real time.Then, the current detector simultaneously sends the measured grounding current value to the primary server and the standby server.Finally, the primary server and the standby server send the measured grounding current value to the upper computer at the remote end, so that the relevant staff can check the grounding current of the oil-immersed transformer at the upper computer.The technical scheme provided by the application can measure and monitor the grounding current value at the transformer grounding assembly of the oil-immersed transformer in real time, and the process of measuring the grounding current by manual is avoided.The primary server and the standby server constitute a safety redundancy, and even when one server fails, the grounding current at the transformer grounding assembly of the oil-immersed transformer can be measured and monitored normally, and the monitoring efficiency of the grounding current value of the oil-immersed transformer is significantly improved.
[0020] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, the specific embodiment of the utility model can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is described below. BRIEF DESCRIPTION OF DRAWINGS
[0021] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, the illustrative embodiment of the utility model and its description are used to explain the utility model, and do not constitute improper limitation on the utility model.In the drawings:
[0022] Fig. 1 The structure schematic view of the grounding current value monitoring device of the oil-immersed transformer provided by the embodiment of the utility model is shown;
[0023] Fig. 2 The structure schematic view of the current detector provided by the embodiment of the utility model is shown;
[0024] Fig. 3 The structure schematic view of another current detector provided by the embodiment of the utility model is shown. CONCRETE EMBODIMENT
[0025] Hereinafter, the utility model will be described in detail with reference to the drawings and in conjunction with embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.
[0026] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific implementation, structure, features and effects according to the utility model application will be described in detail as follows in conjunction with the drawings and preferred embodiments. In the following description, different 'an embodiment' or 'embodiments' do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.
[0027] The utility model discloses an oil-immersed transformer grounding current value monitoring device. Figs. 1 to 3 The utility model discloses an oil-immersed transformer grounding current value monitoring device.
[0028] As shown in Fig. 1 An embodiment of the utility model discloses an oil-immersed transformer grounding current value monitoring device, which is used for monitoring the grounding current value of the transformer grounding assembly of the oil-immersed transformer. The transformer grounding assembly can be the core and the clamp of the oil-immersed transformer. Further, the oil-immersed transformer grounding current value monitoring device comprises a main server 110, a backup server 120 and a plurality of current detectors 130.
[0029] Specifically, each current detector 130 is arranged at the transformer grounding assembly (not shown in the figure) to measure the grounding current value of the transformer grounding assembly. In actual use, the current detector 130 can be arranged at the core of the oil-immersed transformer, or the current detector 130 can be arranged at the clamp of the oil-immersed transformer to determine the grounding current value of the grounding current flowing through the core and the clamp of the oil-immersed transformer. Here, different current detectors 130 can be arranged at different transformer grounding assemblies of the oil-immersed transformer according to actual needs to measure the grounding current value of different transformer grounding assemblies of the oil-immersed transformer.
[0030] Further, the signal receiving end of the main server 110 is connected with the first signal output end of each current detector 130 to obtain the grounding current value measured by each current detector 130. The main server 110 and each current detector 130 are connected in a star-shaped topological network connection mode.
[0031] Further, the signal receiving end of the backup server 120 is connected with the second signal output end of each current detector 130 to obtain the grounding current value measured by each current detector 130.
[0032] Further, the signal output end of the primary server 110 and the signal output end of the backup server 120 are connected with a remote host computer (not shown in the figure) respectively, so as to send the ground current value measured by each current detector 130 to the remote host computer. The host computer can be a computer terminal used by relevant staff, and the relevant staff can view the ground current value measured by each current detector 130 at the host computer, so as to monitor the ground current value of the oil-immersed transformer. In addition, the host computer can also be a relevant monitoring system, which is used to receive the ground current value measured by each current detector 130, so as to monitor the ground current value of the oil-immersed transformer.
[0033] The oil-immersed transformer ground current value monitoring device provided by the embodiment can first measure the ground current value at the transformer grounding assembly of the oil-immersed transformer in real time through the plurality of current detectors arranged at the transformer grounding assembly of the oil-immersed transformer. Then, the current detector sends the measured ground current value to the primary server and the backup server at the same time. Finally, the primary server and the backup server send the measured ground current value to the remote host computer, so that the relevant staff can view the ground current value of the oil-immersed transformer at the host computer. The technical solution provided by the application can measure and monitor the ground current at the transformer grounding assembly of the oil-immersed transformer in real time, which eliminates the process of manually measuring the ground current value. The primary server and the backup server constitute a safety redundancy, so that the ground current at the transformer grounding assembly of the oil-immersed transformer can be measured and monitored normally even if one server fails, thereby significantly improving the monitoring efficiency of the ground current value of the oil-immersed transformer.
[0034] In an optional embodiment, the backup server and each current detector are connected with each other in the form of a ring topology network. Specifically, the backup server and each current detector can be a network node respectively, and each network node is networked based on a ring topology structure, so as to form a ring topology network. Even if the communication line between two current detectors is interrupted, the data communication between the current detector and the backup server will not be affected according to the embodiment provided by the application, thereby improving the communication stability of the oil-immersed transformer ground current value monitoring device.
[0035] In an optional embodiment, as Fig. 2 The current detector 130 includes a Hall sensor 131, a processing unit 132, and a remote communication unit 133. The processing unit 132 can be a single-chip microcomputer, a digital signal processor, or other computing device.
[0036] Specifically, the Hall sensor 131 is arranged at the transformer grounding assembly (not shown in the figure) to measure the grounding current value of the transformer grounding assembly. Specifically, the input hole of the Hall unit of the Hall sensor 131 can surround the iron core in the input hole to measure the current value of the grounding current in the iron core, and the input hole of the Hall unit of the Hall sensor 131 can also surround the clamp in the input hole to measure the current value of the grounding current in the clamp.
[0037] Further, the signal receiving end of the processing unit 132 is connected with the signal output end of the Hall sensor 131 to receive the grounding current value. Further, the signal interaction end of the remote communication unit 133 is connected with the first signal interaction end of the processing unit 132 to obtain the grounding current value from the processing unit 132 and send the grounding current value to the primary server (not shown in the figure) and the standby server (not shown in the figure).
[0038] The embodiment provided in the application can measure the grounding current value of the transformer grounding assembly based on the Hall sensor, improve the real-time performance and accuracy of the measurement of the grounding current value of the transformer grounding assembly, and send the grounding current value of the transformer grounding assembly measured by the Hall sensor to the primary server and the standby server through the remote communication unit by the processing unit, thereby improving the monitoring capability of the grounding current value.
[0039] In an optional embodiment, as shown in Fig. 3 The Hall sensor 131 includes a Hall unit 1311 and a signal conversion unit 1312.
[0040] Specifically, the Hall unit 1311 is arranged at the transformer grounding assembly (not shown in the figure) to measure the grounding current value of the transformer grounding assembly.
[0041] Further, the signal receiving end of the signal conversion unit 1312 is connected with the signal output end of the Hall unit 1311 to receive the grounding current value and perform analog-digital conversion on the grounding current value to obtain the grounding current value in the form of digital signal. Specifically, the grounding current value measured by the Hall unit 1311 is sent to the signal conversion unit 1312 in the form of analog signal. Further, the signal conversion unit 1312 performs analog-digital conversion on the received grounding current value in the form of analog signal to obtain the grounding current value in the form of digital signal.
[0042] Further, a signal output end of the signal conversion unit 1312 is connected with a signal receiving end of the processing unit 132, for sending the grounding current value to the processing unit 132. Here, the signal conversion unit 1312 can also convert the current signal used for representing the grounding current value into a current signal that can be received and processed by the processing unit 132, so that the processing unit 132 can determine the grounding current value based on the current signal.
[0043] The embodiment provided in the application can measure the grounding current value of the transformer grounding assembly of the oil-immersed transformer based on the Hall unit, and the signal conversion unit can convert the grounding current value to obtain a grounding current value that can be received and processed by the processing unit, thereby improving the monitoring capability of the device on the grounding current value.
[0044] In an optional embodiment, as shown in Fig. 3 The current detector 130 further includes a storage unit 134; wherein the storage unit 134 can be a flash disk, a hard disk or the like storage medium.
[0045] Specifically, a signal interaction end of the storage unit 134 is connected with a second signal interaction end of the processing unit 132, for storing the grounding current value. Here, the processing unit 132 can store the grounding current value collected by the Hall sensor 131 into the storage unit 134 every interval of a preset time interval, so as to facilitate generating a trend graph of the grounding current value of the transformer grounding assembly based on the grounding current values at multiple time points.
[0046] The embodiment provided in the application can store the grounding current value of the transformer grounding assembly collected at a historical time, facilitate collecting and processing the grounding current value collected at the historical time in the future, and improve the functionality of the grounding current value monitoring device of the oil-immersed transformer.
[0047] In an optional embodiment, as shown in Fig. 3 The current detector further includes a man-machine interaction unit 135; wherein the man-machine interaction unit 135 can be a serial touch screen.
[0048] Specifically, a signal interaction end of the man-machine interaction unit 135 is connected with a third signal interaction end of the processing unit 132, for obtaining the grounding current and displaying the grounding current value. Further, the relevant staff can also send a control instruction to the processing unit 132 through the man-machine interaction unit 135, so as to control the running process of the current detector 130, and can also view the grounding current value and the trend graph of the grounding current value stored in the storage unit 134.
[0049] Further, the current detector 130 further comprises an alarm unit (not shown in the figure), which can be an alarm lamp or a buzzer; specifically, a signal receiving end of the alarm unit is connected with an alarm output end of the processing unit 132, and the processing unit 132 can control the alarm unit to send alarm information.
[0050] The embodiments provided in the application can display information collected by the current detector based on the human-computer interaction unit, and can control the current detector through the human-computer interaction unit, thereby improving the operability of the ground current value monitoring device of the oil-immersed transformer.
[0051] In an optional embodiment, the device further comprises a first wireless communication unit and a second wireless communication unit; wherein the first wireless communication unit and the second wireless communication unit can be GSM modules respectively, which can send data from the primary server or the standby server to the mobile phone of the relevant staff through the communication network provided by the mobile communication operator, including alarm information and ground current value.
[0052] Specifically, the first wireless communication unit is connected with the primary server, and is used to establish a communication connection between the primary server and a wireless terminal at a remote end; wherein the wireless terminal can be a mobile phone of the relevant staff. The first wireless communication unit can send data from the primary server to the mobile phone of the relevant staff through the communication network provided by the mobile communication operator, including alarm information and ground current value. Further, the second wireless communication unit is connected with the standby server, and the second wireless communication unit is used to establish a communication connection between the standby server and a wireless terminal at a remote end.
[0053] The embodiments provided in the application can enable the primary server and the standby server to send alarm information and other related information to the mobile phone of the relevant staff, thereby realizing remote monitoring of the oil-immersed transformer by the relevant staff.
[0054] It should be noted that the selection of the main server, the standby server, the current detector and the internal circuit connection mode of the current detector can be determined according to the actual situation, and the embodiment is not limited specifically, and in addition, the connection mode of each device can be determined according to the specific selection of the device, and the embodiment is also not limited specifically. The function of the grounding current value monitoring device of the oil-immersed transformer provided in the embodiment is mainly realized through the circuit connection relationship between each circuit module, and does not depend on the program module in a certain circuit module to realize. In addition, each circuit module in the grounding current value monitoring device of the oil-immersed transformer can be realized by an analog circuit or a digital circuit, and for a processing unit that can implant a program module, the realization of the module function can be realized by the program module provided by the prior art.
[0055] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.
Claims
1. A grounding current value monitoring device for an oil-immersed transformer, used to monitor the grounding current value of a transformer grounding assembly of an oil-immersed transformer, characterized in that: The device includes a main server, a backup server and a plurality of current detectors; Each of the current detectors is arranged at the transformer grounding component, and is used to measure the grounding current value of the transformer grounding component; The signal receiving end of the main server is connected to the first signal output end of each current detector, and is used to obtain the ground current value measured by each current detector; The signal receiving end of the standby server is connected to the second signal output end of each current detector, and is used to obtain the ground current value measured by each current detector; The signal output end of the active server and the signal output end of the standby server are respectively connected to a remote host computer to send the ground current value measured by each current detector to the host computer.
2. The device according to claim 1, characterized in that The standby server and each current detector are connected to each other in the form of a ring topology network.
3. The device according to claim 1, characterized in that The current detector includes a Hall sensor, a processing unit and a remote communication unit; The Hall sensor is arranged at the transformer grounding component and is used to measure the grounding current value of the transformer grounding component; The signal receiving end of the processing unit is connected to the signal output end of the Hall sensor for receiving the ground current value; The signal interaction end of the remote communication unit is connected to the first signal interaction end of the processing unit, and is used to obtain the ground current value from the processing unit and send the ground current value to the active server and the standby server.
4. The device according to claim 3, characterized in that The Hall sensor includes a Hall unit and a signal conversion unit; The Hall unit is provided at the transformer grounding component and is used to measure the grounding current value of the transformer grounding component; The signal receiving end of the signal conversion unit is connected to the signal output end of the Hall unit, and is used to obtain the ground current value and perform analog-to-digital conversion on the ground current value to obtain the ground current value in the form of a digital signal; The signal output end of the signal conversion unit is connected to the signal receiving end of the processing unit, and is used to send the ground current value to the processing unit.
5. The device according to claim 3, characterized in that The current detector further includes a storage unit; The signal interaction end of the storage unit is connected to the second signal interaction end of the processing unit and is used to store the ground current value.
6. The device according to claim 3, characterized in that The current detector further includes a human-computer interaction unit; The signal interaction terminal of the human-computer interaction unit is connected to the third signal interaction terminal of the processing unit, and is used to obtain the ground current value and display the ground current value.
7. The device according to claim 6, characterized in that The human-computer interaction unit is a serial port touch screen.
8. The device according to claim 1, characterized in that The device further includes a first wireless communication unit and a second wireless communication unit; The first wireless communication unit is connected to the primary server and is used to establish a communication connection between the primary server and a remote wireless terminal; The second wireless communication unit is connected to the standby server and is used to establish a communication connection between the standby server and a remote wireless terminal.
9. The device according to claim 3, characterized in that The current detector further comprises an alarm unit; a signal receiving end of the alarm unit is connected to an alarm output end of the processing unit.
10. The device according to claim 9, characterized in that The alarm unit is an alarm light or a buzzer.