CN216489903U - Multi-loop AC/DC integrated wide area measurement terminal - Google Patents
Multi-loop AC/DC integrated wide area measurement terminal Download PDFInfo
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- CN216489903U CN216489903U CN202122300366.9U CN202122300366U CN216489903U CN 216489903 U CN216489903 U CN 216489903U CN 202122300366 U CN202122300366 U CN 202122300366U CN 216489903 U CN216489903 U CN 216489903U
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Abstract
The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal which is used for monitoring an alternating current loop and a direct current loop simultaneously and comprises an upper cover, a bottom cover and a circuit board, wherein the upper cover and the bottom cover are fixedly connected, the circuit board is positioned between the upper cover and the bottom cover, and the upper cover comprises a first assembly, a second assembly, a third assembly, a fourth assembly and a fifth assembly. The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal, which adopts four-loop alternating current and four-loop direct current for sampling, metering and monitoring, solves the problem of synchronous data acquisition, and also solves the process problem caused by narrow space by installing the four-loop alternating current and the four-loop direct current on the same instrument for monitoring through the matching of an upper cover and a bottom cover.
Description
Technical Field
The utility model belongs to the technical field of power supply alternating current-direct current conversion monitoring, and particularly relates to a multi-loop alternating current-direct current integrated wide area measurement terminal.
Background
The national double-carbon development strategy of carbon peak-reaching and carbon neutralization is comprehensively promoted by the country, the national double-carbon development strategy is fully supported by the national power grid company, a 'carbon peak-reaching and carbon neutralization action scheme' is released, implementation directions are respectively given from an energy supply side and a consumption side, new energy consumption, diversified energy storage, electric power demand side management, source grid charge storage interaction and the like are mainly realized at the energy supply side, electric energy substitution (electricity supply, cold and heat supply, clean heating and 'coal power change'), rural electrification and new energy automobile application is vigorously promoted at the energy consumption side, novel load large-scale friendly access is supported, a virtual power plant and new energy active support are developed, the power grid energy saving technology application and the like are developed, deep application of energy storage, photovoltaic and iron tower base station 5G technologies mainly based on new energy is realized, alternating current and direct current energy utilization equipment cannot be separated, and the typical problems are as follows:
1. at present, online monitoring and real-time verification of the alternating current-direct current conversion efficiency of an inverter power supply are temporarily omitted in the market, some inverters have a power regulation function related to the electric energy quality in the working process, all data output and measurement are calculated on inverter equipment, and as the operation duration of the equipment is long, faults of a direct current filter circuit, an IGBT (insulated gate bipolar transistor) and an alternating current filter occur in a plurality of equipment;
2. at present, no device for monitoring the alternating current and direct current mixed metering of the iron tower base station exists in the market, the power supply of the base station is mainly divided into three stages, generally, the power supply of the base station is 220V commercial power, and the first stage is to convert 220V into-48V; the second stage typically uses a modular power supply to convert the-48V voltage to 48V, or 28V, voltage to power the PA; the third level is a board level power supply, the voltage required by each chip, an analog circuit, a digital circuit and the like is converted from 12V, metering devices owned in the current market are independent alternating current devices and direct current instruments, and the existing equipment is only used for sampling monitoring, so that the purpose of auxiliary electricity charge statistics cannot be achieved in precision and real-time;
3. for example, the space of scenes such as a base station scene of an iron tower company, a photovoltaic inverter and the like is limited, and the environments are different, for example, the problems that the installation is dispersed, the space position is occupied greatly, the data of the two instruments are not synchronous in real time, the operation faults are caused by the protection problems and the like exist when the two instruments of alternating current and direct current are adopted.
Therefore, the above problems are further improved.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a multi-loop alternating current-direct current integrated wide area measurement terminal, which adopts four-loop alternating current and four-loop direct current for sampling, metering and monitoring, solves the problem of synchronous data acquisition, and solves the process problem caused by narrow space by installing four-loop alternating current and four-loop direct current on the same instrument (terminal) for monitoring through the matching of an upper cover and a bottom cover, and has the advantages of centralized installation, small space occupation, real-time synchronization of data of the four-loop alternating current and the four-loop direct current, and the like.
The utility model also aims to provide a multi-loop alternating current and direct current integrated wide area measurement terminal, which can realize the sampling and measurement of an open-close type mutual inductor for alternating current and direct current inversion nodes of a power supply in the scenes of an iron tower base station, a photovoltaic inverter, energy storage and the like, has the real-time online monitoring function, can realize the measurement of alternating current and direct current electric quantity to assist the electric charge management, and realizes the conversion efficiency calculation of a third party through data monitoring.
In order to achieve the above object, the present invention provides a multi-loop ac/dc integrated wide area measurement terminal for simultaneously monitoring an ac loop and a dc loop, comprising an upper cover, a bottom cover and a circuit board, wherein the upper cover and the bottom cover are fixedly connected and the circuit board is located between the upper cover and the bottom cover, wherein:
the upper cover comprises a first assembly, a second assembly, a third assembly, a fourth assembly and a fifth assembly, and the first assembly, the second assembly, the third assembly and the fourth assembly are respectively and fixedly connected to the periphery of the fifth assembly;
the bottom cover is positioned on one side, which is formed by surrounding the first assembly, the second assembly, the third assembly and the fourth assembly and is far away from the fifth assembly, and one side, which is close to the upper cover, of the bottom cover is provided with a first convex strip and a second convex strip (the structural strength is enhanced).
As a further preferable technical solution of the above technical solution, the first component and the third component are both provided with a strip structure (convenient to take and increase friction).
As a further preferred technical solution of the above technical solution, a first connection end, a second connection end, a third connection end and a fourth connection end are arranged on one side of the second assembly close to the bottom cover, a fifth connection end, a sixth connection end, a seventh connection end and an eighth connection end are arranged on one side of the bottom cover close to the upper cover, the first connection end and the fifth connection end are tightly attached, the second connection end and the sixth connection end are tightly attached, the third connection end and the seventh connection end are tightly attached, and the fourth connection end and the eighth connection end are tightly attached (the connection ends and the connection ends are tightly attached to facilitate the outgoing line of the circuit board and the fixation of the connection line).
As a further preferable technical solution of the above technical solution, the fifth component is provided with a first through hole, a second through hole, a third through hole and a fourth through hole (for external connection of the circuit board).
As a further preferable technical solution of the above technical solution, a support (convenient to take and fix, etc.) is provided at a side of the bottom cover away from the upper cover.
As a further preferable technical solution of the above technical solution, the circuit board is provided with a first three-phase current sampling circuit, a second three-phase current sampling circuit, a third three-phase current sampling circuit, a fourth three-phase current sampling circuit, and a metering circuit, and the first three-phase current sampling circuit, the second three-phase current sampling circuit, the third three-phase current sampling circuit, and the fourth three-phase current sampling circuit are electrically connected to the metering circuit, respectively.
As a further preferable technical solution of the above technical solution, the circuit board is provided with a three-phase voltage sampling circuit, and the three-phase voltage sampling circuit is electrically connected to the metering circuit.
As a further preferred technical solution of the above technical solution, the circuit board is provided with a first direct current sampling circuit, a second direct current sampling circuit, a third direct current sampling circuit and a fourth direct current sampling circuit, and the first direct current sampling circuit, the second direct current sampling circuit, the third direct current sampling circuit and the fourth direct current sampling circuit are respectively electrically connected to the metering circuit.
As a further preferable technical solution of the above technical solution, the circuit board is provided with a dc voltage sampling circuit, and the dc voltage sampling circuit is electrically connected to the metering circuit.
Drawings
Fig. 1A is a schematic structural diagram of an upper cover of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.
Fig. 1B is a schematic structural diagram of an upper cover of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.
Fig. 2A is a schematic bottom cover structure diagram of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.
Fig. 2B is a schematic bottom cover structure diagram of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.
Fig. 3 is a schematic diagram of a circuit board structure of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.
Fig. 4 is a schematic structural diagram of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.
The reference numerals include: 100. an upper cover; 110. a first component; 111. a strip structure; 120. a second component; 121. a first connection end; 122. a second connection end; 123. a third connection end; 124. a fourth connection end; 130. a third component; 140. a fourth component; 150. a fifth component; 151. a first through hole; 152. a second through hole; 153. a third through hole; 154. a fourth via hole; 200. a bottom cover; 210. a first rib; 220. a second convex strip; 230. a fifth connection end; 240. a sixth connection end; 250. a seventh connection end; 260. an eighth connection end; 270. a support; 300. and (5) buckling.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal, and the specific embodiment of the utility model is further described in combination with the preferred embodiment.
In the embodiment of the present invention, those skilled in the art note that the iron tower base station inverter and the like related to the present invention can be regarded as the prior art.
Preferred embodiments.
The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal which is used for monitoring an alternating current loop and a direct current loop simultaneously and comprises an upper cover 100, a bottom cover 200 and a circuit board, wherein the upper cover 100 is fixedly connected with the bottom cover 200, and the circuit board is positioned between the upper cover 100 and the bottom cover 200, wherein:
the upper cover comprises a first component 110, a second component 120, a third component 130, a fourth component 140 and a fifth component 150, wherein the first component 110, the second component 120, the third component 130 and the fourth component 140 are respectively fixedly connected to the periphery of the fifth component 150;
the bottom cover 200 is located at a side of the first member 110, the second member 120, the third member 130 and the fourth member 140, which is surrounded and formed away from the fifth member 150, and a side of the bottom cover 200, which is close to the upper cover 100, is provided with a first rib 210 and a second rib 220 (for enhancing structural strength).
Specifically, the first component 110 and the third component 130 are both provided with a strip-shaped structure 111 (which is convenient to take and increases friction).
More specifically, a first connection end 121, a second connection end 122, a third connection end 123 and a fourth connection end 124 are arranged on one side of the second assembly 120 close to the bottom cover 200, a fifth connection end 230, a sixth connection end 240, a seventh connection end 250 and an eighth connection end 260 are arranged on one side of the bottom cover 200 close to the upper cover 100, the first connection end 121 and the fifth connection end 230 are tightly attached, the second connection end 122 and the sixth connection end 240 are tightly attached, the third connection end 123 and the seventh connection end 250 are tightly attached, and the fourth connection end 124 and the eighth connection end 260 are tightly attached (the tight attachment of the connection ends and the connection ends facilitates the outgoing lines and the fixing of the circuit board on the connection lines).
Further, the fifth assembly 150 is provided with a first through hole 151, a second through hole 152, a third through hole 153, and a fourth through hole 154 (for external connection of the circuit board).
Further, a bracket 270 (for facilitating taking and fixing, etc.) is disposed on a side of the bottom cover 200 away from the upper cover 100.
Preferably, the circuit board is provided with a first three-phase current sampling circuit, a second three-phase current sampling circuit, a third three-phase current sampling circuit, a fourth three-phase current sampling circuit and a metering circuit, and the first three-phase current sampling circuit, the second three-phase current sampling circuit, the third three-phase current sampling circuit and the fourth three-phase current sampling circuit are respectively and electrically connected with the metering circuit.
Preferably, the circuit board is provided with a three-phase voltage sampling circuit, and the three-phase voltage sampling circuit is electrically connected with the metering circuit.
Preferably, the circuit board is provided with a first direct current sampling circuit, a second direct current sampling circuit, a third direct current sampling circuit and a fourth direct current sampling circuit, the first direct current sampling circuit, the second direct current sampling circuit, the third direct current sampling circuit and the fourth direct current sampling circuit respectively with the metering circuit electric connection.
Preferably, the circuit board is provided with a direct-current voltage sampling circuit, and the direct-current voltage sampling circuit is electrically connected with the metering circuit.
Preferably, as shown in fig. 3, the circuit board of the present invention is configured with ac and dc meter modules through a main power board, both of which are metered by means of coil transformers, which represent different components on the circuit board by the marks 1-22, wherein:
1/2/3/4 is a four-circuit three-phase current sampling circuit: connecting the wires on the mutual inductor to a current interface of the device;
5. three-phase voltage sampling circuit: connecting the wires on the mutual inductor to a voltage interface of the device;
6. an auxiliary power supply: providing a stable low voltage power supply for the current;
an RS485 communication module: the communication can be carried out through a handheld terminal or a PC to complete programming setting and meter reading;
8. motherboard (i.e., circuit board main body): welding the components on the main board;
9. communication mainboard: installing the communication component by welding;
10. a liquid crystal screen: a display function;
11. a metering circuit: an electric energy metering function;
12. a main chip: monitoring the state of the electricity utilization environment in real time;
13. pressing a key: and (3) key inquiry mode: the keys can enter a key inquiry mode in the rotary display mode
14. Crystal oscillator: providing a clock signal to the system;
15. a transformer: changing the alternating voltage;
16. capacitance: the energy-saving filter is applied to a power circuit and realizes the functions of bypass, lotus root removal, filtering and energy storage;
17. alarm indicator lamp: the alarm function is that when the phase is lost, the corresponding alarm indicator lamp is turned off;
18/19/20/21 is a four-way DC current sampling circuit: connecting the wires on the mutual inductor to a current interface of the device;
22. DC voltage sampling circuit: the wires on the transformer are connected to the voltage interface of the device terminal.
Preferably, as shown in fig. 4, the bottom cover of the present invention is further provided with a clip 300, the clip 300 is fixedly connected with the bottom cover 200, and the clip 300 is fixed to a guide rail for easy movement, thereby facilitating measurement.
The utility model has the advantages that:
electric energy metering function
(1) The electric energy metering function: the method has the advantages that active and reactive electric energy and reverse active and reactive total electric energy are measured in a time-sharing manner;
(2) the device has the function of recording the active and reactive historical electric quantity in the last 12 months;
(3) three-phase power supply, one or two-phase outage, measurement accuracy is not influenced. After power failure, all stored data are not lost and can be kept for more than 10 years;
(4) the coupling isolation active passive pulse test port has the output function (the output requirement of telecontrol pulse is met, and the pulse width is 80ms +/-20 ms);
(5) and measuring the residual current value, wherein a residual current transformer needs to be externally connected, and the ratio of the transformer is 5A/2.5 mA.
(this function needs to be customized).
Second, alarm function
(1) When the phase is lost, the corresponding alarm indicator lamp is turned off.
Third, communication function
(1) The communication can be carried out through a handheld terminal or a PC to complete programming setting and meter reading. The communication symbol is bright during communication, and the communication is convenient, intuitive and reliable;
(2) communication protocol DL 645/2007.
Fourth, display function
(1) Displaying various information by adopting a wide-temperature large liquid crystal mode; the number of the electric energy display digit is 6 and 2 is decimal;
(2) the automatic parameter display function is realized, and the time for displaying is 5 seconds.
Preferably, the present invention also has the following advantages:
(1) and meanwhile, the independent metering and communication of the electric energy of the four loops are supported.
(2) The RJ12 connector mode is used for sampling the three-phase current, the secondary side milliampere level input is adopted, the safety is good, and the security and protection are convenient to maintain.
It should be noted that the technical features of the iron tower base station inverter and the like related to the present patent application should be regarded as the prior art, and the specific structure, the operating principle, the control mode and the spatial arrangement mode of the technical features may be conventional choices in the field, and should not be regarded as the utility model point of the present patent, and the present patent is not further specifically described in detail.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (9)
1. A multi-loop AC-DC integrated wide area measurement terminal is used for monitoring an AC loop and a DC loop simultaneously, and is characterized by comprising an upper cover, a bottom cover and a circuit board, wherein the upper cover and the bottom cover are fixedly connected, and the circuit board is positioned between the upper cover and the bottom cover, wherein:
the upper cover comprises a first assembly, a second assembly, a third assembly, a fourth assembly and a fifth assembly, and the first assembly, the second assembly, the third assembly and the fourth assembly are respectively and fixedly connected to the periphery of the fifth assembly;
the bottom cover is positioned on one side, formed by surrounding the first assembly, the second assembly, the third assembly and the fourth assembly, far away from the fifth assembly, and a first convex strip and a second convex strip are arranged on one side, close to the upper cover, of the bottom cover.
2. The terminal of claim 1, wherein the first and third members each have a strip-shaped structure.
3. The multi-loop AC/DC integrated wide area measurement terminal as claimed in claim 2, wherein the second module has a first connection end, a second connection end, a third connection end and a fourth connection end on a side close to the bottom cover, the bottom cover has a fifth connection end, a sixth connection end, a seventh connection end and an eighth connection end on a side close to the top cover, the first connection end and the fifth connection end are tightly attached, the second connection end and the sixth connection end are tightly attached, the third connection end and the seventh connection end are tightly attached, and the fourth connection end and the eighth connection end are tightly attached.
4. The terminal of claim 3, wherein the fifth module has a first through hole, a second through hole, a third through hole and a fourth through hole.
5. The terminal of claim 4, wherein a bracket is disposed on a side of the bottom cover away from the top cover.
6. The integrated wide area measurement terminal for multi-loop AC/DC according to claim 5, wherein the circuit board is provided with a first three-phase current sampling circuit, a second three-phase current sampling circuit, a third three-phase current sampling circuit, a fourth three-phase current sampling circuit and a metering circuit, and the first three-phase current sampling circuit, the second three-phase current sampling circuit, the third three-phase current sampling circuit and the fourth three-phase current sampling circuit are electrically connected with the metering circuit respectively.
7. The terminal of claim 6, wherein the circuit board is provided with a three-phase voltage sampling circuit, and the three-phase voltage sampling circuit is electrically connected to the metering circuit.
8. The terminal of claim 7, wherein the circuit board has a first DC sampling circuit, a second DC sampling circuit, a third DC sampling circuit and a fourth DC sampling circuit, and the first DC sampling circuit, the second DC sampling circuit, the third DC sampling circuit and the fourth DC sampling circuit are electrically connected to the metering circuit respectively.
9. The terminal of claim 8, wherein the circuit board is provided with a dc voltage sampling circuit, and the dc voltage sampling circuit is electrically connected to the metering circuit.
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| CN202122300366.9U CN216489903U (en) | 2021-09-22 | 2021-09-22 | Multi-loop AC/DC integrated wide area measurement terminal |
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| CN202122300366.9U CN216489903U (en) | 2021-09-22 | 2021-09-22 | Multi-loop AC/DC integrated wide area measurement terminal |
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| CN216489903U true CN216489903U (en) | 2022-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002499A (en) * | 2021-09-22 | 2022-02-01 | 浙江京禾电子科技有限公司 | Multi-loop AC/DC integrated wide area measurement terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002499A (en) * | 2021-09-22 | 2022-02-01 | 浙江京禾电子科技有限公司 | Multi-loop AC/DC integrated wide area measurement terminal |
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Denomination of utility model: Multi loop AC/DC integrated wide area measurement terminal Effective date of registration: 20230320 Granted publication date: 20220510 Pledgee: Agricultural Bank of China Limited by Share Ltd. South Lake branch Pledgor: ZHEJIANG JINGHE ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2023980035367 |