Transformer operation environment monitoring device

Abstract

The utility model relates to a transformer operation environment monitoring device, which belongs to the technical field of power supply and distribution monitoring equipment and comprises a temperature and humidity collector, an infrared thermometer, a heat dissipation fan, a shutter, an alarm, a master controller and a power supply module for supplying power to the whole device. The temperature and humidity collector is installed in the transformer chamber and used for measuring the environment temperature in the transformer chamber. The infrared thermometer is installed at the transformer and used for collecting temperature data of the transformer. The cooling fan is installed on the side wall of the transformer chamber, a plurality of air openings are formed in the side wall of the transformer chamber, and the shutters are installed at the air openings. According to the utility model, the temperature and humidity collector, the infrared thermometer, the heat dissipation fan, the shutter, the alarm and other devices are integrated, the environment temperature in the transformer chamber and the temperature of the transformer are monitored in real time, and the working states of the heat dissipation fan and the shutter are adjusted according to the monitored data, so that the environment temperature change is effectively coped with, and the working efficiency is improved. And dependence and errors of manual operation are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power supply and distribution monitoring equipment, and particularly relates to a transformer operating environment monitoring device. Background Art

[0002] Ensuring efficient and stable operation of transformers presents numerous challenges, particularly within their specific operating environment. The transformer room, with an indoor area of ​​56 square meters, must maintain normal operation within an ambient temperature range of -25°C to 40°C and a transformer temperature range of -25°C to 90°C. Given that water transfers from the Datun Reservoir primarily occur in April and May each year, when ambient temperatures fluctuate significantly, this places even higher demands on the transformer's operating environment.

[0003] Traditionally, the cooling fans in transformer rooms rely on manual activation, a method with significant timeliness and efficiency issues. On the one hand, manual operation struggles to respond promptly to changes in ambient temperature, resulting in delayed heat dissipation and potential transformer overheating. On the other hand, manual operation is time-consuming and labor-intensive, hindering the rapid resolution of abnormal situations. Furthermore, temperature monitoring of key components, such as the transformer's high and low voltage terminals, relies on manual observation using temperature-indicating paper every two hours. This monitoring method is not only inefficient but also makes it difficult to detect and address potential faults in a timely manner, increasing the risk of transformer damage and, in turn, impacting the normal operation of equipment and facilities at the pumping station and various gate stations. Utility Model Content

[0004] The purpose of the present invention is to provide a transformer operating environment monitoring device to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A transformer operating environment monitoring device includes a temperature and humidity collector, an infrared thermometer, a heat dissipation fan, a shutter, an alarm, a main controller, and a power module for supplying power to the entire device;

[0007] The temperature and humidity collector is installed in the transformer room to measure the ambient temperature in the transformer room; the infrared thermometer is installed at the transformer to collect the temperature data of the transformer; the cooling fan is installed on the side wall of the transformer room, and a number of air vents are set on the side wall of the transformer room, and shutters are installed at the air vents;

[0008] The temperature and humidity collector and the infrared thermometer are connected to the input end of the main controller through corresponding signal processing circuits, the alarm is connected to the output end of the main controller, and the cooling fan and the blinds are both connected to the output end of the main controller.

[0009] A further improvement of the technical solution is that both the louver and the heat dissipation fan are provided with dust-proof nets, which are arranged on the outside of the louver and the heat dissipation fan.

[0010] A further improvement of the present technical solution is that the signal processing circuit includes a signal amplification circuit, a filtering circuit and an analog-to-digital conversion circuit, and the temperature and humidity collector and the infrared thermometer are connected to the input end of the main controller through the signal amplification circuit, the filtering circuit and the analog-to-digital conversion circuit in sequence.

[0011] A further improvement of the technical solution is that the signal amplification circuit includes a resistor R1, an amplifier U1, a diode D1, a diode D2, a resistor R2, a capacitor C1, a resistor R3, a capacitor C2, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a resistor R6, a capacitor C5, a capacitor C6 and a resistor R7;

[0012] The temperature and humidity collector and the infrared thermometer are connected to the first end of the resistor R1, the second end of the resistor R1 is connected to the inverting input terminal of the amplifier U1, the positive terminal of the diode D1 and the negative terminal of the diode D2, the negative terminal of the diode D1 is connected to the positive 5V power supply, and the positive terminal of the diode D2 is grounded. The non-inverting input terminal of the amplifier U1 is connected to the first end of the resistor R2, the first end of the resistor R3 and the first end of the capacitor C1, the second end of the resistor R2 is connected to the positive 5V power supply, the second end of the resistor R3 and the second end of the capacitor C1 are both grounded, the feedback pin of the amplifier U1 is connected to the inverting input terminal of the amplifier U1 through the parallel resistor R4 and capacitor C2, the positive power supply pin of the amplifier U1 is connected to the first end of the resistor R5, the first end of the capacitor C3 and the first end of the capacitor C4, the second end of the resistor R5 is connected to the positive 5V power supply, the second end of the capacitor C3 and the second end of the capacitor C4 are both grounded, the external compensation pin of the amplifier U1 is connected to the first end of the capacitor C6 through the parallel capacitor C5 and resistor R6, the second end of the capacitor C6 is grounded, and the output terminal of the amplifier U1 is connected to the filter circuit through the resistor R7.

[0013] A further improvement of the technical solution is that the filter circuit includes capacitor C7, capacitor C8, amplifier U2, resistor R8, resistor R9, capacitor C9, capacitor C10, capacitor C11, capacitor C12, capacitor C13, capacitor C14, amplifier U3, resistor R10 and resistor R11;

[0014] A first end of capacitor C7 is connected to resistor R7, a second end of capacitor C7 is connected to the non-inverting input of amplifier U2 and the first end of resistor R8 through capacitor C8, the second end of resistor R8 is grounded, the inverting input of amplifier U2 is connected to the second end of capacitor C8 through resistor R9, the positive power supply of amplifier U2 is connected to the positive 5V power supply and is grounded through capacitor C9 and capacitor C10 in parallel, the negative power supply of amplifier U2 is connected to the negative 5V power supply and is grounded through capacitor C11 and capacitor C12 in parallel, the output of amplifier U2 is connected to the inverting input of amplifier U2, the output of amplifier U2 is connected to the first end of capacitor C14 through capacitor C13, the second end of capacitor C14 is connected to the non-inverting input of amplifier U3 and the first end of resistor R10, the second end of resistor R10 is grounded, the inverting input of amplifier U3 is connected to the first end of capacitor C14 through resistor R11, and the output of amplifier U3 is connected to the inverting input of amplifier U3 and the analog-to-digital conversion circuit.

[0015] A further improvement of this technical solution is that the amplifier U1 adopts an operational amplifier of model AD8099, and the amplifier U2 and the amplifier U3 adopt an operational amplifier of model OP2177.

[0016] A further improvement of this technical solution is that the analog-to-digital conversion circuit includes an analog-to-digital conversion chip of model AD9680, the input end of the analog-to-digital conversion chip is connected to the output end of the amplifier U3, and the output end of the analog-to-digital conversion chip is connected to the main controller.

[0017] The beneficial effect of the present invention is that, by integrating devices such as a temperature and humidity collector, an infrared thermometer, a cooling fan, shutters, and an alarm, the present invention can monitor the ambient temperature in the transformer room and the temperature of the transformer in real time, and adjust the operating status of the cooling fan and shutters according to the monitoring data, thereby effectively responding to changes in ambient temperature and ensuring that the transformer operates stably within the set temperature range. This greatly improves the timeliness and efficiency of monitoring and reduces the reliance on and errors in manual operation. In addition, the signal processing circuit provided ensures that the collected temperature and ambient humidity data are accurately and stably transmitted to the main controller; finally, dust screens are provided at the shutters and cooling fan to effectively prevent dust and debris from entering the transformer room, maintaining the cleanliness and heat dissipation efficiency of the equipment. This not only extends the service life of the equipment, but also reduces the risk of failure caused by dust accumulation.

[0018] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect.

[0019] It can be seen that compared with the prior art, the present invention has outstanding substantial features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the device.

[0021] Figure 2 This is the schematic diagram of the signal amplification circuit.

[0022] Figure 3 This is the schematic diagram of the filter circuit.

[0023] 110 is a temperature and humidity collector, 120 is an infrared thermometer, 130 is a cooling fan, 140 is a blind, 150 is an alarm, and 160 is a main controller. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art 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.

[0026] like Figure 1 As shown, the utility model provides a transformer operating environment monitoring device, including a temperature and humidity collector, an infrared thermometer, a heat dissipation fan, a shutter, an alarm, a main controller, and a power module for powering the entire device. The temperature and humidity collector is installed in the transformer room to measure the ambient temperature in the transformer room. The infrared thermometer is installed at the transformer to collect temperature data of the transformer. The heat dissipation fan is installed on the side wall of the transformer room, and a plurality of air vents are provided on the side wall of the transformer room. The shutter is installed at the air vents. The temperature and humidity collector and the infrared thermometer are connected to the input of the main controller via corresponding signal processing circuits. The alarm is connected to the output of the main controller. The heat dissipation fan and the shutter are both connected to the output of the main controller. The main controller adopts a single-chip microcomputer model STM32F103C8T6.

[0027] The utility model integrates devices such as temperature and humidity collectors, infrared thermometers, heat dissipation fans, shutters and alarms. This technical solution can monitor the ambient temperature in the transformer room and the temperature of the transformer in real time, and adjust the working status of the heat dissipation fans and shutters according to the monitoring data, thereby effectively responding to changes in ambient temperature and ensuring that the transformer operates stably within the set temperature range. This greatly improves the timeliness and efficiency of monitoring and reduces the reliance on and errors in manual operation.

[0028] To effectively prevent dust and debris from entering the transformer room, dust screens are installed on the shutters and cooling fans. The dust screens are installed on the outside of the shutters and cooling fans to maintain the cleanliness and heat dissipation efficiency of the equipment. This not only extends the service life of the equipment, but also reduces the risk of failure caused by dust accumulation.

[0029] Specifically, the signal processing circuit includes a signal amplification circuit, a filtering circuit and an analog-to-digital conversion circuit. The temperature and humidity collector and the infrared thermometer are connected to the input end of the main controller through the signal amplification circuit, the filtering circuit and the analog-to-digital conversion circuit in sequence.

[0030] like Figure 2 As shown, the signal amplification circuit includes a resistor R1, an amplifier U1, a diode D1, a diode D2, a resistor R2, a capacitor C1, a resistor R3, a capacitor C2, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a resistor R6, a capacitor C5, a capacitor C6 and a resistor R7; the temperature and humidity collector and the infrared thermometer are connected to the first end of the resistor R1, the second end of the resistor R1 is connected to the inverting input end of the amplifier U1, the positive electrode of the diode D1 and the negative electrode of the diode D2, the negative electrode of the diode D1 is connected to the positive 5V power supply, the positive electrode of the diode D2 is grounded, and the non-inverting input end of the amplifier U1 is connected to the first end of the resistor R2, the first end of the resistor R3 and the first end of the capacitor C1. The second end of resistor R2 is connected to a positive 5V power supply, the second end of resistor R3 and the second end of capacitor C1 are both grounded, the feedback pin of amplifier U1 is connected to the inverting input terminal of amplifier U1 through a parallel resistor R4 and capacitor C2, the positive power supply pin of amplifier U1 is connected to a first end of resistor R5, a first end of capacitor C3 and a first end of capacitor C4, the second end of resistor R5 is connected to a positive 5V power supply, the second end of capacitor C3 and the second end of capacitor C4 are both grounded, the external compensation pin of amplifier U1 is connected to the first end of capacitor C6 through a parallel capacitor C5 and resistor R6, the second end of capacitor C6 is grounded, and the output terminal of amplifier U1 is connected to the filter circuit through resistor R7.

[0031] like Figure 3As shown, the filtering circuit includes capacitor C7, capacitor C8, amplifier U2, resistor R8, resistor R9, capacitor C9, capacitor C10, capacitor C11, capacitor C12, capacitor C13, capacitor C14, amplifier U3, resistor R10 and resistor R11; the first end of capacitor C7 is connected to resistor R7, the second end of capacitor C7 is connected to the non-inverting input terminal of amplifier U2 and the first end of resistor R8 through capacitor C8, the second end of resistor R8 is grounded, the inverting input terminal of amplifier U2 is connected to the second end of capacitor C8 through resistor R9, the positive power supply terminal of amplifier U2 is connected to the positive 5V power supply and the capacitor C1 is connected in parallel. 9 and capacitor C10 are grounded, the negative power supply terminal of amplifier U2 is connected to the negative 5V power supply and grounded through parallel capacitors C11 and C12, the output terminal of amplifier U2 is connected to the inverting input terminal of amplifier U2, the output terminal of amplifier U2 is connected to the first terminal of capacitor C14 through capacitor C13, the second terminal of capacitor C14 is connected to the non-inverting input terminal of amplifier U3 and the first terminal of resistor R10, the second terminal of resistor R10 is grounded, the inverting input terminal of amplifier U3 is connected to the first terminal of capacitor C14 through resistor R11, and the output terminal of amplifier U3 is connected to the inverting input terminal of amplifier U3 and the analog-to-digital conversion circuit. Among them, amplifier U1 uses an operational amplifier model AD8099, and amplifiers U2 and amplifiers U3 use operational amplifiers model OP2177.

[0032] In addition, the analog-to-digital conversion circuit includes an analog-to-digital conversion chip of model AD9680, the input end of the analog-to-digital conversion chip is connected to the output end of the amplifier U3, and the output end of the analog-to-digital conversion chip is connected to the main controller.

[0033] The utility model can ensure that the collected temperature and ambient humidity data are accurately and stably transmitted to the main controller through the signal processing circuit provided.

[0034] The working principle of the device is as follows: the main controller compares the received transformer indoor temperature data with the preset indoor temperature threshold, and compares the received transformer temperature data with the preset transformer temperature data; if the transformer indoor temperature data collected by the temperature and humidity collector is greater than or equal to 30 degrees Celsius and less than 40 degrees Celsius, the blinds are controlled to open for natural ventilation; if the transformer indoor temperature data collected by the temperature and humidity collector is greater than or equal to 40 degrees Celsius, the blinds and the heat dissipation fan are controlled to open for cooling; if the transformer temperature data collected by the infrared thermometer is greater than the preset transformer temperature value, the main controller controls the start of the heat dissipation fan and blinds to cool the transformer, and starts the alarm to sound an alarm.

[0035] The above disclosure is only a preferred embodiment of the present invention, but the present invention 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 principles of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A transformer operating environment monitoring device, characterized in that: It includes temperature and humidity collector, infrared thermometer, cooling fan, shutter, alarm, main controller and power module for the entire device; The temperature and humidity collector is installed in the transformer room to measure the ambient temperature in the transformer room; the infrared thermometer is installed at the transformer to collect the temperature data of the transformer; the cooling fan is installed on the side wall of the transformer room, and a number of air vents are set on the side wall of the transformer room, and shutters are installed at the air vents; The temperature and humidity collector and the infrared thermometer are connected to the input end of the main controller through corresponding signal processing circuits, the alarm is connected to the output end of the main controller, and the cooling fan and the blinds are both connected to the output end of the main controller.

2. The transformer operating environment monitoring device according to claim 1, characterized in that: The louvers and the heat dissipation fan are both provided with dust-proof nets, which are arranged on the outside of the louvers and the heat dissipation fan.

3. The transformer operating environment monitoring device according to claim 1, characterized in that: The signal processing circuit includes a signal amplification circuit, a filtering circuit and an analog-to-digital conversion circuit. The temperature and humidity collector and the infrared thermometer are connected to the input end of the main controller through the signal amplification circuit, the filtering circuit and the analog-to-digital conversion circuit in sequence.

4. The transformer operating environment monitoring device according to claim 3, characterized in that: The signal amplification circuit includes a resistor R1, an amplifier U1, a diode D1, a diode D2, a resistor R2, a capacitor C1, a resistor R3, a capacitor C2, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a resistor R6, a capacitor C5, a capacitor C6, and a resistor R7; The temperature and humidity collector and the infrared thermometer are connected to the first end of the resistor R1, the second end of the resistor R1 is connected to the inverting input terminal of the amplifier U1, the positive terminal of the diode D1 and the negative terminal of the diode D2, the negative terminal of the diode D1 is connected to the positive 5V power supply, and the positive terminal of the diode D2 is grounded. The non-inverting input terminal of the amplifier U1 is connected to the first end of the resistor R2, the first end of the resistor R3 and the first end of the capacitor C1, the second end of the resistor R2 is connected to the positive 5V power supply, the second end of the resistor R3 and the second end of the capacitor C1 are both grounded, the feedback pin of the amplifier U1 is connected to the inverting input terminal of the amplifier U1 through the parallel resistor R4 and capacitor C2, the positive power supply pin of the amplifier U1 is connected to the first end of the resistor R5, the first end of the capacitor C3 and the first end of the capacitor C4, the second end of the resistor R5 is connected to the positive 5V power supply, the second end of the capacitor C3 and the second end of the capacitor C4 are both grounded, the external compensation pin of the amplifier U1 is connected to the first end of the capacitor C6 through the parallel capacitor C5 and resistor R6, the second end of the capacitor C6 is grounded, and the output terminal of the amplifier U1 is connected to the filter circuit through the resistor R7.

5. The transformer operating environment monitoring device according to claim 4, characterized in that: The filter circuit includes capacitor C7, capacitor C8, amplifier U2, resistor R8, resistor R9, capacitor C9, capacitor C10, capacitor C11, capacitor C12, capacitor C13, capacitor C14, amplifier U3, resistor R10 and resistor R11; A first end of capacitor C7 is connected to resistor R7, a second end of capacitor C7 is connected to the non-inverting input of amplifier U2 and the first end of resistor R8 through capacitor C8, the second end of resistor R8 is grounded, the inverting input of amplifier U2 is connected to the second end of capacitor C8 through resistor R9, the positive power supply of amplifier U2 is connected to the positive 5V power supply and is grounded through capacitor C9 and capacitor C10 in parallel, the negative power supply of amplifier U2 is connected to the negative 5V power supply and is grounded through capacitor C11 and capacitor C12 in parallel, the output of amplifier U2 is connected to the inverting input of amplifier U2, the output of amplifier U2 is connected to the first end of capacitor C14 through capacitor C13, the second end of capacitor C14 is connected to the non-inverting input of amplifier U3 and the first end of resistor R10, the second end of resistor R10 is grounded, the inverting input of amplifier U3 is connected to the first end of capacitor C14 through resistor R11, and the output of amplifier U3 is connected to the inverting input of amplifier U3 and the analog-to-digital conversion circuit.

6. The transformer operating environment monitoring device according to claim 5, characterized in that: Amplifier U1 uses an operational amplifier of model AD8099, and amplifier U2 and amplifier U3 use an operational amplifier of model OP2177.

7. The transformer operating environment monitoring device according to claim 5, characterized in that: The analog-to-digital conversion circuit includes an analog-to-digital conversion chip of model AD9680. The input end of the analog-to-digital conversion chip is connected to the output end of the amplifier U3, and the output end of the analog-to-digital conversion chip is connected to the main controller.

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