CN216956148U - Distribution transformer data acquisition device - Google Patents
Distribution transformer data acquisition device Download PDFInfo
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- CN216956148U CN216956148U CN202123000100.9U CN202123000100U CN216956148U CN 216956148 U CN216956148 U CN 216956148U CN 202123000100 U CN202123000100 U CN 202123000100U CN 216956148 U CN216956148 U CN 216956148U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model discloses a distribution transformer data acquisition device, which comprises a box body, a current and voltage acquisition device, a single chip microcomputer, a power supply and a data transmission device, wherein the current and voltage acquisition device, the single chip microcomputer, the power supply and the data transmission device are integrated with one side in the box body, the transformer is arranged on the other side in the box body, a partition plate is arranged in the middle of the transformer, the current and voltage acquisition device is connected with the transformer on the other side of the partition plate through a wire, the single chip microcomputer is connected with the current and voltage acquisition device through a circuit, and the data transmission device receives data sent by the single chip microcomputer through the circuit and transmits all the data to a cloud platform.
Description
Technical Field
The utility model belongs to the technical field of power distribution networks, and particularly relates to a data acquisition device for a distribution transformer.
Background
With the development of power grid users, the problem of three-phase power load imbalance of a power distribution network is more and more prominent; the problem of three-phase load unbalance of a power distribution network described in an electric power system mainly means that three-phase power utilization power distribution is uneven, a single-phase load of a user is higher, the single-phase high-power load is connected into the electric power system, and the single-phase load is started by using electricity, so that excitation inrush current is larger, and the like, and the three-phase load unbalance of the electric power distribution system is more than 15%. The increase of the unbalanced rate of the three-phase load not only causes the single-phase load of the power distribution system to be heavier, the voltage and the current of the three phases are inconsistent, and the voltage of the phase with larger current is lower, so that the quality of power supply and utilization is reduced, and the power consumption is increased; electric equipment can be burnt; and the threat and the loss increase are formed on the safety, the stability and the economical operation of the power distribution system.
Most of data collectors of the existing three-phase load automatic collecting device only simply collect current data, the data cannot completely reflect the running state, and errors of detection of the data can cause damage to electric equipment.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the utility model are as follows: how to provide a distribution transformer data acquisition device, solve the unable complete problem of collecting of distribution transformer voltage, electric current three-phase data.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a distribution transformer data acquisition device, includes the box, with box one side integrated current-voltage acquisition device, singlechip, power supply and data transmission device, opposite side installation transformer in the box is equipped with the division board in the middle of the transformer, and current-voltage acquisition device passes through the electric wire and is connected with the transformer of division board opposite side, and the singlechip passes through circuit connection with current-voltage acquisition device, data transmission device passes through the circuit and receives the data that the singlechip sent to with all data transmission to high in the clouds platform.
The using principle of the transformer monitoring system is that firstly, a current and voltage acquisition device is connected with a transformer on the other side of a partition plate through a circuit to acquire current and voltage data values of the transformer, then a single chip microcomputer processes the current or voltage values to obtain conventional three-phase data values of the transformer, the data values are transmitted to a cloud platform through a data transmission device, and monitoring workers download, record and monitor the three-phase data values of the transformer through the cloud platform in real time.
Furthermore, the current and voltage acquisition device comprises a current transformer and a voltage transformer, a conversion circuit is arranged on the single chip microcomputer, and the conversion circuit comprises a sampling circuit, an amplifying circuit, a shaping circuit and a sampling circuit which are sequentially connected; the sampling circuit is connected with the current transformer through a circuit.
Further, the data transmission device is a 4G DTU device.
Furthermore, the current transformer and the voltage transformer are fixedly connected to one side of the box body opposite to the transformer separation plate.
Furthermore, two through holes are formed in the partition plate, and the acquisition circuit of the current and voltage acquisition device is connected with the transformer on the other side of the partition plate through the through holes.
Further, still include temperature sensor, temperature sensor sets up in box transformer one side, and temperature sensor passes through the transmission line and directly is connected with data transmission device.
Compared with the prior art, the utility model can bring the following technical effects:
through with collection system, singlechip, power supply and data transmission device integration in the transformer box for three-phase load automatic acquisition device's data collection station direct action has reached accurate, quick and effectual collection transformer three-phase data, solves the problem that three-phase data such as distribution transformer voltage, electric current can't be collected completely.
The acquisition device, the single chip microcomputer, the power supply and the data transmission device are integrated in the transformer box body, so that the maintenance and installation of the transformer and the whole distribution transformer data acquisition device are convenient.
Drawings
FIG. 1 is a schematic structural diagram of a distribution transformer data acquisition device according to the present invention;
fig. 2 is a schematic diagram of line data transmission of a data acquisition device of a distribution transformer according to the present invention.
Reference numerals: the device comprises a box body 1, a current and voltage acquisition device 2, a singlechip 3, a power supply 4, a transformer 5, a partition plate 6, a current transformer 21, a voltage transformer 22, a DTU device 7-4G and a temperature sensor 8.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: as shown in fig. 1 and 2, a distribution transformer data acquisition device, including box 1, with box 1 in the current and voltage collection device 2 of one side integrated, singlechip 3, power supply 4 and data transmission device, another side installation transformer 5 in the box 1 is equipped with division board 6 in the middle of the transformer 5, and current and voltage collection device 2 passes through the electric wire and is connected with the transformer 5 of division board 6 opposite side, singlechip 3 and current and voltage collection device 2 pass through circuit connection, data transmission device passes through the circuit and receives the data that singlechip 3 sent to with all data transmission to high in the clouds platform. The power supply 4 supplies power to the current and voltage acquisition device 2, the singlechip 3 and the data transmission device and is respectively connected with the current and voltage acquisition device 2, the singlechip 3 and the data transmission device through circuits.
The using principle of the utility model is that firstly, a current and voltage acquisition device 2 is connected with a transformer 5 on the other side of a partition plate 6 through a circuit to acquire current and voltage data values of the transformer 5, then a single chip microcomputer 3 processes the current or voltage values to obtain three-phase data values of the conventional transformer 5, then the data values are transmitted to a cloud platform through a data transmission device, and monitoring staff download, record and monitor the three-phase data values of the transformer 5 in real time through the cloud platform.
The current and voltage acquisition device 2 comprises a current transformer 21 and a voltage transformer 22, a conversion circuit is arranged on the singlechip 3, and the conversion circuit comprises a sampling circuit, an amplifying circuit, a shaping circuit and a sampling circuit which are connected in sequence; the sampling circuit is electrically connected with the current transformer 21. The sampling circuit is used for receiving a current signal from the mutual inductor, converting the current signal into a voltage signal and transmitting the voltage signal to the amplifying circuit; the amplifying circuit is used for amplifying the received voltage signal and adjusting the voltage signal to a preset voltage range; the shaping circuit is used for converting the adjusted voltage signal into a square wave signal so as to determine the frequency of the current signal; and the sampling circuit is used for collecting the adjusted voltage signal so as to determine the amplitude of the current signal.
The current signal from the mutual inductor is amplified through the amplifying circuit, different input signals can be converted into signals in an approximate range, and the purpose of acquisition compatibility is achieved, so that the three-phase power acquisition equipment provided by the application has universality.
The amplifying circuit includes the difference fortune and puts the chip, and the chip is put to the difference fortune includes: the pin A0, the pin A1, the pin A0 and the pin A1 are used as gain selection terminals, and low gain or high gain is selected under the control of an external jumper. The differential operational amplifier chip is preferably an AD8251ARMZ chip and can support a differential or single-ended input mode, wherein a pin A0 and a pin A1 are gain selection terminals, and inputs with different logic relationships can be selected through the control of an external jumper so as to select outputs with different gains.
The sampling circuit includes: the jumper wire is used for selecting a single-ended or differential input mode; and a sampling resistor R3 for converting the current signal from the transformer into a voltage signal.
The shaping circuit includes: the second low-pass filter circuit, the clamping diode, the zero-crossing comparator and the de-jitter resistor; the second low-pass filter circuit is used for receiving the voltage signal adjusted by the amplifying circuit and performing low-pass filtering; the clamping diode is used for limiting the negative voltage in the voltage signal passing through the second low-pass filter circuit to a preset potential; the zero-crossing comparator is used for receiving the voltage signal filtered by the second low-pass filter circuit and carrying out zero-crossing comparison to convert the voltage signal into a square wave signal; the debouncing resistor is used for removing noise in the square wave signal.
The data transmission device is 4G DTU equipment 7. And transmitting the current, the voltage and the amplitude of the three-phase sinusoidal electric signal to a cloud platform through a 4G or 5G network.
The current transformer 21 and the voltage transformer are fixedly connected to one side of the box body 1 opposite to the partition plate 6 of the transformer 5. The current transformer 21 and the voltage transformer are prevented from influencing the environmental magnetic induction of the normal operation of the transformer 5.
Two through holes are formed in the partition plate 6, and the acquisition circuit of the current and voltage acquisition device 2 is connected with the transformer 5 on the other side of the partition plate 6 through the through holes. The purpose that the through hole set up makes things convenient for current and voltage collection device 2's acquisition circuit to insert the opposite side by 6 one sides of division board, does not influence current and voltage collection device 2's collection effect.
Still include temperature sensor 8, temperature sensor 8 sets up in box 1 transformer 5 one side, and temperature sensor 8 passes through the transmission line and directly is connected with data transmission device. The temperature sensor 8 is arranged in a thermometer seat of an oil tank of the transformer 5 and on the side of a low-voltage outlet wire of the transformer 5, is used for collecting the working temperature of the oil temperature tank of the transformer 5 and transmitting the working temperature to the cloud platform through the 4G DTU equipment 7.
The acquisition device, the singlechip 3, the power supply 4 and the data transmission device are integrated in the box body 1 of the transformer 5, so that the maintenance and the installation of the transformer 5 and the data acquisition device of the whole distribution transformer 5 are convenient.
Compared with the prior art, the utility model can bring the following technical effects:
through integrating collection system, singlechip 3, power supply 4 and data transmission device in 5 boxes 1 of transformer for 5 set points of transformer are directly acted on to three-phase load automatic acquisition device's data collection station, have reached accurate, quick and effectual collection 5 three-phase data of transformer, solve the problem that three-phase data such as distribution transformer 5 voltage, electric current can't be collected completely.
The above is only a preferred embodiment of the present invention, and it should be noted that several modifications and improvements made by those skilled in the art without departing from the technical solution should also be considered as falling within the scope of the claims.
Claims (7)
1. The utility model provides a distribution transformer data acquisition device, its characterized in that, including box (1), with box (1) in one side integrated current-voltage collection system (2), singlechip (3), power supply (4) and data transmission device, opposite side installation transformer (5) in box (1), be equipped with division board (6) in the middle of transformer (5), current-voltage collection system (2) are connected with transformer (5) of division board (6) opposite side through the electric wire, and singlechip (3) pass through circuit connection with current-voltage collection system (2), data transmission device passes through the circuit and receives the data that singlechip (3) sent to with all data transmission to high in the clouds platform.
2. A distribution transformer data acquisition device according to claim 1, characterized in that: the current and voltage acquisition device (2) comprises a current transformer (21) and a voltage transformer (22), a conversion circuit is arranged on the single chip microcomputer (3), and the conversion circuit comprises a sampling circuit, an amplifying circuit, a shaping circuit and a sampling circuit which are sequentially connected; the sampling circuit is connected with the current transformer (21) through a circuit.
3. A distribution transformer data acquisition device according to claim 2, wherein: the data transmission device is 4G DTU equipment (7).
4. A distribution transformer data acquisition device according to claim 3, wherein: the current transformer (21) and the voltage transformer are fixedly connected to one side of the box body (1) opposite to the partition plate (6) of the transformer (5).
5. A distribution transformer data acquisition device according to claim 2, wherein: the current transformer (21) and the voltage transformer are fixedly connected to one side of the box body (1) opposite to the partition plate (6) of the transformer (5).
6. The distribution transformer data acquisition device of claim 4, wherein: two through holes are formed in the partition plate (6), and the acquisition circuit of the current and voltage acquisition device (2) is connected with the transformer (5) on the other side of the partition plate (6) through the through holes.
7. The distribution transformer data acquisition device of claim 6, wherein: still include temperature sensor (8), temperature sensor (8) set up in box (1) transformer (5) one side, and temperature sensor (8) are connected with data transmission device through the transmission line is direct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000100.9U CN216956148U (en) | 2021-12-01 | 2021-12-01 | Distribution transformer data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000100.9U CN216956148U (en) | 2021-12-01 | 2021-12-01 | Distribution transformer data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216956148U true CN216956148U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123000100.9U Active CN216956148U (en) | 2021-12-01 | 2021-12-01 | Distribution transformer data acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216956148U (en) |
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2021
- 2021-12-01 CN CN202123000100.9U patent/CN216956148U/en active Active
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