Transformer electric leakage monitoring system
By designing a transformer leakage monitoring system including leakage current sensor, signal processing circuit and automatic power supply system, the problem of traditional manual inspection is solved, and real-time, accurate and safe leakage of the transformer is achieved. monitor.
Patent Information
- Application Number
- CN202420579347.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Traditional transformer leakage monitoring relies on manual inspection, which is time-consuming and labor-intensive and poses great safety hazards, especially in high-voltage environments, which leads to equipment aging and safety threats.
A system including leakage monitoring device, communication unit and remote server is designed to process signals through rectifying, filtering, voltage stabilizing and isolation circuits using leakage current sensors, signal processing circuits, displays, alarms and cleaning components, and through solar energy The board and battery ensure stable power supply, real-time remote monitoring and automatic alarm.
Real-time leakage monitoring of transformers is realized, data accuracy and monitoring efficiency are improved, safety hazards of manual inspection are reduced, power supply stability and detection effect are ensured, and equipment safety and reliability are improved.
Smart Images
Figure CN222319107U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of transformer monitoring, and in particular relates to a transformer leakage monitoring system. Background Art
[0002] The transformer is an important device in the power system. It uses the principle of electromagnetic induction to change the voltage of alternating current to meet the transmission needs and the needs of electrical appliances.
[0003] The working environment of the transformer is complex, and it is easy for environmental factors to cause abnormal working conditions of the equipment. For example, the transformer has problems such as high temperature, static electricity, humidity, condensation, immersion, and water accumulation, which can easily cause equipment aging and damage, leading to insulation breakdown, partial discharge and short circuit, posing a serious threat to the safe operation of the equipment and personal safety. Therefore, the transformer needs to be inspected regularly to monitor the cabinet inside the transformer for leakage monitoring, especially for the high-voltage transformer cabinet. Traditional transformer monitoring generally adopts manual inspection methods, in which personnel manually monitor the leakage of high-voltage transformer cabinets. This manual inspection monitoring method requires a large number of personnel and high professional requirements. It is not only time-consuming and labor-intensive, but also has great safety hazards. Utility Model Content
[0004] The purpose of the utility model is to provide a transformer leakage monitoring system designed to solve the problems existing in the prior art in view of the defects existing in the prior art.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A transformer leakage monitoring system includes a leakage monitoring device, a communication unit and a remote server. The leakage monitoring device is connected to the remote server through the communication unit. The leakage monitoring device includes a monitoring box. A first partition is arranged in the monitoring box. A threading hole is arranged on the first partition. The first partition divides the monitoring box into a first monitoring box and a second monitoring box. A leakage current sensor is arranged in the first monitoring box. A signal processing circuit, a display, a controller, an alarm, a cleaning component and a power supply unit for supplying power to the entire system are arranged in the second monitoring box. The leakage current sensor is connected to an input end of the controller through the signal processing circuit. An output end of the controller is connected to the display and the alarm.
[0007] The cleaning component includes a brush, a first mounting plate, a second mounting plate and a sliding rod. The first mounting plate and the second mounting plate are symmetrically installed about the display. A first sliding groove parallel to the display is arranged on a side of the first mounting plate close to the display, and a second sliding groove parallel to the display is arranged on a side of the second mounting plate close to the display. The sliding rod is vertically arranged between the first sliding groove and the second sliding groove. The first sliding groove and the second sliding groove are both slidably connected to the sliding rod, and the brush is arranged in parallel on a side of the sliding rod close to the display.
[0008] A further improvement of the technical solution is that the leakage current sensor adopts a leakage current sensor of model SY-DFN.
[0009] A further improvement of the technical solution is that the signal processing circuit includes a rectifier circuit, a filter circuit, a voltage stabilizing circuit and an isolation circuit, and the rectifier circuit is connected to the controller via the filter circuit, the voltage stabilizing circuit and the isolation circuit in sequence.
[0010] A further improvement of the technical solution is that the rectifier circuit includes a resistor R1 and a rectifier U1, and the filter circuit includes a capacitor C1 and a capacitor C2; the first end of the resistor R1 is connected to the first end of the leakage current sensor, the second end of the resistor R1 is connected to the first end of the rectifier U1, the second end of the rectifier U1 is connected to the second end of the leakage current sensor, the third end of the rectifier U1 is grounded, the fourth end of the rectifier U1 is connected to the first end of the capacitor C1 and the first end of the capacitor C2, and the second end of the capacitor C1 and the second end of the capacitor C2 are both grounded.
[0011] A further improvement of the technical solution is that the voltage stabilizing circuit includes a voltage stabilizer U2, an adjustable resistor R2, a resistor R3, a capacitor C3, a capacitor C4 and a resistor R4;
[0012] The input end of the voltage regulator U2 is connected to the first end of the capacitor C2, the ground end of the voltage regulator U2 is connected to the first end and the active end of the adjustable resistor R2, the second end of the adjustable resistor R2 is grounded, the output end of the voltage regulator U2 is connected to the first end of the resistor R3, the first end of the capacitor C4 and the first end of the resistor R4, the second end of the resistor R3 is connected to the first end of the adjustable resistor R2 and the first end of the capacitor C3, and the second end of the capacitor C3, the second end of the capacitor C4 and the second end of the resistor R4 are all grounded.
[0013] Further improvements of the present technical solution include that the isolation circuit includes a resistor R5, an optocoupler isolation chip U3 and a resistor R6, the positive electrode of the light-emitting end of the optocoupler isolation chip U3 is connected to the first end of the resistor R4 through the resistor R5, the negative electrode of the light-emitting end of the optocoupler isolation chip U3 is grounded, the collector of the light-receiving end of the optocoupler isolation chip U3 is connected to the power supply unit, the emitter of the light-receiving end of the optocoupler isolation chip U3 is grounded through the resistor R6, and the emitter of the light-receiving end of the optocoupler isolation chip U3 is also connected to the controller.
[0014] A further improvement of the technical solution is that the optical coupler isolation chip U3 adopts an optical coupler isolation chip of model AMC1311DWVR.
[0015] A further improvement of the technical solution is that the power supply unit includes a battery, a solar panel and a charger, the solar panel and the charger are connected to the input end of the battery, and the output end of the battery is connected to the power supply device of the entire system.
[0016] The beneficial effect of the utility model is that the utility model performs real-time leakage monitoring of the transformer through the leakage current sensor, and the utility model also processes the leakage current data monitored by the leakage current sensor to improve the accuracy of the data; in addition, the utility model also arranges a cleaning component on the outside of the display, and the on-site staff cleans the display by operating the cleaning component, so that the on-site staff can understand the monitoring status more clearly when viewing the display, and prevent the observation from being affected by the dirt on the display; finally, the utility model powers the device through a charger, a solar panel and a battery, so that the monitoring system has the advantages of stable power supply, good detection effect and timely alarm, so that when the mains power supply connected to the charger fails, it switches to the battery cell to continue powering, which effectively improves the stability of the power supply, and the battery can be charged through the solar panel when there is sunlight, reducing power consumption.
[0017] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect.
[0018] It can be seen that compared with the prior art, the present invention has outstanding substantive features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of the leakage monitoring system.
[0020] Figure 2 This is a schematic diagram of the principle of the leakage monitoring system.
[0021] 100 is a leakage monitoring device, 111 is a first partition, 112 is a first monitoring box, 113 is a second monitoring box, 120 is a leakage current sensor, 130 is a signal processing circuit, 140 is a display, 150 is a controller, 160 is an alarm, 171 is a brush, 172 is a first mounting plate, 173 is a second mounting plate, 174 is a sliding rod, 180 is a power supply unit, 200 is a communication unit, and 300 is a remote server. DETAILED DESCRIPTION
[0022] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0024] like Figure 1 and Figure 2 As shown, the utility model provides a transformer leakage monitoring system, including a leakage monitoring device, a communication unit and a remote server, the leakage monitoring device is connected to the remote server through the communication unit, the leakage monitoring device includes a monitoring box, a first partition is provided in the monitoring box, a threading hole is provided on the first partition, the first partition divides the monitoring box into a first monitoring box and a second monitoring box, a leakage current sensor is provided in the first monitoring box, a signal processing circuit, a display, a controller, an alarm, a cleaning component and a power supply unit for powering the entire system are provided in the second monitoring box; the leakage current sensor is connected to the input end of the controller through the signal processing circuit, and the output end of the controller is connected to the display and the alarm. Among them, the leakage current sensor adopts a leakage current sensor of model SY-DFN.
[0025] Specifically, the cleaning component includes a brush, a first mounting plate, a second mounting plate and a sliding rod. The first mounting plate and the second mounting plate are symmetrically installed about the display. A first sliding groove parallel to the display is provided on the side of the first mounting plate close to the display, and a second sliding groove parallel to the display is provided on the side of the second mounting plate close to the display. The sliding rod is vertically arranged between the first sliding groove and the second sliding groove. The first sliding groove and the second sliding groove are both slidably connected to the sliding rod, and the brush is arranged in parallel on the side of the sliding rod close to the display.
[0026] The signal processing circuit includes a rectifier circuit, a filter circuit, a voltage stabilizing circuit and an isolation circuit. The rectifier circuit is connected to the controller via the filter circuit, the voltage stabilizing circuit and the isolation circuit in sequence.
[0027] Specifically, the rectifier circuit includes a resistor R1 and a rectifier U1, and the filter circuit includes a capacitor C1 and a capacitor C2; a first end of the resistor R1 is connected to a first end of the leakage current sensor, a second end of the resistor R1 is connected to a first end of the rectifier U1, a second end of the rectifier U1 is connected to a second end of the leakage current sensor, a third end of the rectifier U1 is grounded, a fourth end of the rectifier U1 is connected to a first end of the capacitor C1 and a first end of the capacitor C2, and a second end of the capacitor C1 and a second end of the capacitor C2 are both grounded.
[0028] The voltage stabilizing circuit includes a voltage stabilizer U2, an adjustable resistor R2, a resistor R3, a capacitor C3, a capacitor C4 and a resistor R4; the input end of the voltage stabilizer U2 is connected to the first end of the capacitor C2, the ground end of the voltage stabilizer U2 is connected to the first end and the active end of the adjustable resistor R2, the second end of the adjustable resistor R2 is grounded, the output end of the voltage stabilizer U2 is connected to the first end of the resistor R3, the first end of the capacitor C4 and the first end of the resistor R4, the second end of the resistor R3 is connected to the first end of the adjustable resistor R2 and the first end of the capacitor C3, the second end of the capacitor C3, the second end of the capacitor C4 and the second end of the resistor R4 are all grounded.
[0029] The isolation circuit includes a resistor R5, an optocoupler isolation chip U3 and a resistor R6. The positive electrode of the light-emitting end of the optocoupler isolation chip U3 is connected to the first end of the resistor R4 through the resistor R5, the negative electrode of the light-emitting end of the optocoupler isolation chip U3 is grounded, the collector of the light-receiving end of the optocoupler isolation chip U3 is connected to the power supply unit, the emitter of the light-receiving end of the optocoupler isolation chip U3 is grounded through the resistor R6, and the emitter of the light-receiving end of the optocoupler isolation chip U3 is also connected to the controller. Among them, the optocoupler isolation chip U3 adopts an optocoupler isolation chip with a model of AMC1311DWVR.
[0030] In order to ensure the power supply reliability of the entire system, the power supply unit of the utility model includes a battery, a solar panel and a charger. The solar panel and the charger are connected to the input end of the battery, and the output end of the battery is connected to the power supply device of the entire system; when the mains power supply connected to the charger fails, it switches to the battery pool to continue powering, which effectively improves the stability of power supply, and the battery can be charged by the solar panel when there is sunlight, reducing power consumption.
[0031] The above disclosure is only the preferred implementation mode of the utility model, but the utility model is not limited thereto. Any non-creative changes that can be thought of by technicians in this field, as well as several improvements and modifications made without departing from the principle of the utility model, should fall within the scope of protection of the utility model.
Claims
1. A transformer leakage monitoring system, characterized in that: The invention comprises a leakage monitoring device, a communication unit and a remote server. The leakage monitoring device is connected to the remote server through the communication unit. The leakage monitoring device comprises a monitoring box. A first partition is arranged in the monitoring box. A threading hole is arranged on the first partition. The first partition divides the monitoring box into a first monitoring box and a second monitoring box. A leakage current sensor is arranged in the first monitoring box. A signal processing circuit, a display, a controller, an alarm, a cleaning component and a power supply unit for supplying power to the whole system are arranged in the second monitoring box. The leakage current sensor is connected to the input end of the controller through the signal processing circuit. The output end of the controller is connected to the display and the alarm. The cleaning component includes a brush, a first mounting plate, a second mounting plate and a sliding rod. The first mounting plate and the second mounting plate are symmetrically installed about the display. A first sliding groove parallel to the display is arranged on a side of the first mounting plate close to the display, and a second sliding groove parallel to the display is arranged on a side of the second mounting plate close to the display. The sliding rod is vertically arranged between the first sliding groove and the second sliding groove. The first sliding groove and the second sliding groove are both slidably connected to the sliding rod, and the brush is arranged in parallel on a side of the sliding rod close to the display.
2. The transformer leakage monitoring system according to claim 1, characterized in that: The leakage current sensor adopts a leakage current sensor of model SY-DFN.
3. The transformer leakage monitoring system according to claim 1, characterized in that: The signal processing circuit comprises a rectifier circuit, a filter circuit, a voltage stabilizing circuit and an isolation circuit. The rectifier circuit is connected to the controller via the filter circuit, the voltage stabilizing circuit and the isolation circuit in sequence.
4. The transformer leakage monitoring system according to claim 3, characterized in that: The rectifier circuit includes a resistor R1 and a rectifier U1, and the filter circuit includes a capacitor C1 and a capacitor C2; a first end of the resistor R1 is connected to a first end of the leakage current sensor, a second end of the resistor R1 is connected to a first end of the rectifier U1, a second end of the rectifier U1 is connected to a second end of the leakage current sensor, a third end of the rectifier U1 is grounded, a fourth end of the rectifier U1 is connected to a first end of the capacitor C1 and a first end of the capacitor C2, and a second end of the capacitor C1 and a second end of the capacitor C2 are both grounded.
5. The transformer leakage monitoring system according to claim 4, characterized in that: The voltage stabilizing circuit includes a voltage stabilizer U2, an adjustable resistor R2, a resistor R3, a capacitor C3, a capacitor C4 and a resistor R4; the input end of the voltage stabilizer U2 is connected to the first end of the capacitor C2, the ground end of the voltage stabilizer U2 is connected to the first end and the active end of the adjustable resistor R2, the second end of the adjustable resistor R2 is grounded, the output end of the voltage stabilizer U2 is connected to the first end of the resistor R3, the first end of the capacitor C4 and the first end of the resistor R4, the second end of the resistor R3 is connected to the first end of the adjustable resistor R2 and the first end of the capacitor C3, the second end of the capacitor C3, the second end of the capacitor C4 and the second end of the resistor R4 are all grounded.
6. The transformer leakage monitoring system according to claim 5, characterized in that: The isolation circuit includes a resistor R5, an optocoupler isolation chip U3 and a resistor R6. The positive electrode of the light-emitting end of the optocoupler isolation chip U3 is connected to the first end of the resistor R4 through the resistor R5, the negative electrode of the light-emitting end of the optocoupler isolation chip U3 is grounded, the collector of the light-receiving end of the optocoupler isolation chip U3 is connected to the power supply unit, the emitter of the light-receiving end of the optocoupler isolation chip U3 is grounded through the resistor R6, and the emitter of the light-receiving end of the optocoupler isolation chip U3 is also connected to the controller.
7. The transformer leakage monitoring system according to claim 6, characterized in that: The optocoupler isolation chip U3 uses an optocoupler isolation chip model AMC1311DWVR.
8. The transformer leakage monitoring system according to claim 1, characterized in that: The power supply unit comprises a storage battery, a solar panel and a charger. The solar panel and the charger are connected to the input end of the storage battery, and the output end of the storage battery is connected to the power supply device of the whole system.