CN219574211U - High-voltage ammeter - Google Patents
High-voltage ammeter Download PDFInfo
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- CN219574211U CN219574211U CN202320292186.7U CN202320292186U CN219574211U CN 219574211 U CN219574211 U CN 219574211U CN 202320292186 U CN202320292186 U CN 202320292186U CN 219574211 U CN219574211 U CN 219574211U
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Abstract
The utility model discloses a high-voltage ammeter, which belongs to the technical field of electric power collection, and particularly comprises a high-voltage ammeter and a collection module, wherein the collection module is arranged between the high-voltage ammeter and a three-phase electric wire and is used for collecting electric power; the acquisition module comprises: a connector for connection to a three-phase electrical wire; the utility model relates to a high-voltage ceramic capacitor with a CVT alternating-current voltage sensor structure, a high-low capacitance serial voltage dividing principle replaces the traditional PT function and voltage acquisition function, the product has no ferromagnetic resonance explosion risk, a capacitive self-electricity-taking mode overcomes secondary short circuit and explosion accidents, and the device also has the functions of voltage acquisition, current acquisition and self-electricity-taking, can be combined with a high-voltage meter to realize metering and monitoring of a distribution network line, and is a necessary product for realizing distribution network automation.
Description
Technical Field
The utility model relates to the technical field of power acquisition, in particular to a high-voltage ammeter.
Background
At present, the current and voltage measurement on the 10kV distribution network is always carried out by adopting an electromagnetic voltage transformer with an iron core coil and a current transformer respectively. The current and voltage required by the high voltage electricity meter are measured by them.
The existing voltage transformer has small impedance, and once the secondary side is short-circuited, the current is rapidly increased to burn out the coil. Therefore, the primary side of the voltage transformer is connected with the fuse, and the secondary side is reliably grounded, so that personal and equipment accidents caused by high potential of the secondary side when the primary side and the secondary side are damaged in an insulating way are avoided. The electromagnetic induction type voltage transformer ground equivalent circuit is the same as the transformer equivalent circuit. The electromagnetic transformer for the electricity taking of the traditional outdoor pole-mounted circuit breaker frequently causes secondary short-circuit and explosion accidents, and becomes one of main accidents of the distribution network, meanwhile, the connecting wire of the traditional equipment is connected with the electric wire of the three-phase electricity, and the transmission line is connected with the electric wire by adopting an electric clamp, so that the connection is rapid and convenient, but the connection is not firm, and the use is influenced.
For this purpose we invented a high voltage electricity meter.
Disclosure of Invention
The present utility model has been made in view of the above-mentioned problems occurring in the conventional high voltage electricity meter.
It is therefore an object of the present utility model to provide an electrical power harvesting device that solves the above mentioned problems.
In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:
a high voltage meter, comprising: the high-voltage ammeter further comprises an acquisition module which is arranged between the high-voltage ammeter and the three-phase electric wire and used for acquiring electric power;
the acquisition module comprises:
a connector for connection to a three-phase electrical wire; and a transmission line connected between the connection member and the high-voltage ammeter.
As a preferable embodiment of the high-voltage electricity meter according to the present utility model, wherein: the connecting piece comprises a shell, a voltage sensor, a current sensor and an electricity taking device are arranged on the inner wall of the shell, the current sensor is connected to a 10kV transmission line in series, and the electricity taking device and the voltage sensor are connected to an acquisition assembly on the 10kV transmission line in parallel.
As a preferable embodiment of the high-voltage electricity meter according to the present utility model, wherein: the bottom of collection subassembly is connected with transmission line for be connected with the high-voltage electricity table, the connecting wire is installed to casing outer wall one side, the one end extension support shells inner wall of connecting wire is connected with collection subassembly, and the other end is connected with the electric wire of three-phase electricity.
As a preferable embodiment of the high-voltage electricity meter according to the present utility model, wherein: and the connecting wire is fixedly connected with one wire clamp of the three-phase power transmission wires.
As a preferable embodiment of the high-voltage electricity meter according to the present utility model, wherein: the wire clip comprises; the sealing cover, bottom one side of sealing cover rotates with casing top one side to be connected, and the other end outside of two is fixed mounting respectively and is had connecting block one, connecting block two, pass through the bolt fastening between connecting block one, the connecting block two.
As a preferable embodiment of the high-voltage electricity meter according to the present utility model, wherein: the bottom of closing cap and the top of casing all offer the semi-circular spread groove that corresponds each other for with the electric wire connection and fix with it.
Compared with the prior art:
1. the voltage transformer adopts a high-voltage ceramic capacitor similar to a CVT alternating-current voltage sensor structure, the principle of serial voltage division of the high and low capacitors replaces the traditional PT function, the risk of ferromagnetic resonance explosion is avoided, and the secondary short circuit and explosion accidents are overcome by a capacitive self-electricity-taking mode;
2. the phase current adopts a low-power current sensor mode to obtain a current signal;
3. in the semicircular connecting groove of seting up the circuit outer wall of three-phase electricity and casing top, rotate the closing cap and press from both sides the circuit tight through two sets of semicircular connecting grooves, pass connecting block one and connecting block two simultaneously and close it and fix through the bolt for connect between the two more stable, firm.
Drawings
FIG. 1 is a front view of the present utility model;
FIG. 2 is a front view of the housing of the present utility model;
FIG. 3 is a view showing the construction of the inside of the housing of the present utility model;
FIG. 4 is a flow chart of the wire connection of the present utility model;
FIG. 5 is a schematic diagram of the electrical operation of the present utility model
FIG. 6 is a schematic diagram of the high and low capacitance series voltage division of the present utility model.
In the figure: the device comprises a shell 1, a transmission double-shielding cable 2, a high-voltage connecting wire 3, a fixing structure, a sealing cover 4, a semicircular connecting groove 5, a connecting groove 6, a connecting block 7, a positioning block 8, a positioning groove 9, a first connecting block 10, a second connecting block 11, a voltage sensor 12, a current sensor 13, a high-voltage ammeter 14, a collecting module 15 and an electricity taking device 16.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
The utility model provides a high-voltage ammeter, which has the advantages of reducing secondary short circuits and reducing safety risks, and referring to fig. 1-6, the high-voltage ammeter comprises a high-voltage ammeter 14 and an acquisition module which is arranged between the high-voltage ammeter 14 and a three-phase electric wire and is used for acquiring electric power;
the acquisition module comprises: a connector for connection to a three-phase electrical wire; and a transmission line 2 connected between the connection and the high-voltage meter 14.
The connecting piece includes casing 1, voltage sensor 12, current sensor 13 and get electric installation are installed to casing 1's inner wall, current sensor is established ties to 10kV power transmission line between the three, and get electric installation and voltage sensor and connect in parallel to 10kV power transmission line on gather the subassembly, get electric installation and voltage sensor and realize voltage acquisition and get electric function through the electric capacity partial pressure principle, current sensor 13 is through (LPCT) output needs standard little analog voltage signal, and then transmit to high-voltage ammeter 14, high-voltage ammeter is to voltage acquisition, current acquisition data judgement processing is sent to the distribution network backstage, realize data real-time supervision and measurement.
The bottom of collection subassembly is connected with transmission line 2 for be connected with high-voltage ammeter 14, high-voltage connection line 3 is installed to casing 1 outer wall one side, and the one end extension of high-voltage connection line 3 supports casing 1 inner wall and gathers the subassembly and be connected, and the other end is connected with three-phase electric wire, through the input and the wire connection of connecting wire 3.
Install the casing between connecting wire 3 and the electric wire of three-phase electricity, the bottom one side of closing cap 4 rotates with casing 1 top one side to be connected, and the other end outside of two is fixed mounting respectively and is connected 10, connecting block two 11, pass through bolt fastening between 10, the connecting block two 11, in the semicircular spread groove 5 of seting up three-phase electric circuit outer wall and casing 1 top, rotate closing cap 4 and pass 10kV power transmission line through two sets of semicircular spread grooves 5 13 for the wire casing, and drive the locating piece 8 of closing cap 4 bottom to be connected with the constant head tank 9 on casing 1 top, pass 10 and connecting block two 11 through the bolt simultaneously and close it and fix.
The semi-circular spread groove 5 that corresponds each other has all been seted up on the bottom of closing cap 4 and the top of casing 1 for with the electric wire connection and fix with it, through the both sides fixed mounting connecting block 7 of the semi-circular spread groove 5 of closing cap 4 bottom, and set up spread groove 5 on the top both sides of the semi-circular spread groove 5 on casing 1 top, be used for making both connect and electric current collection.
When the three-phase power supply system is specifically used, the voltage transformer 12 is a voltage division type voltage transformer, a person skilled in the art clamps the three-phase power supply circuit outer wall and the semicircular connecting groove 5 formed in the top end of the shell 1, the rotating sealing cover 4 clamps the circuit through the two groups of semicircular connecting grooves 5, meanwhile, the circuit is closed and fixed through the first connecting block 10 and the second connecting block 11 through bolts, meanwhile, the input end of the connecting wire 3 is electrically connected with the circuit, the power taking device and the voltage sensor realize the voltage acquisition and power taking function through the capacitive voltage division principle, the current sensor 13 outputs a required standard small analog voltage signal through the (LPCT) output and transmits the required standard small analog voltage signal to the high-voltage meter 14, and the high-voltage meter judges and processes the voltage acquisition and the current acquisition data and sends the data to the distribution network background to realize the real-time data monitoring and metering.
Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. High-voltage meter, including high-voltage meter (14), its characterized in that: the system also comprises an acquisition module which is arranged between the high-voltage ammeter (14) and the three-phase electric wire and is used for acquiring electric power;
the acquisition module comprises:
a connector for connection to a three-phase electrical wire; and a transmission line (2) connected between the connection member and the high-voltage meter (14).
2. The high-voltage ammeter according to claim 1, characterized in that the connector comprises a housing (1), wherein a voltage sensor (12), a current sensor (13) and an electricity taking device (16) are installed in the housing (1), the three current sensors are connected in series to a 10kV power transmission line, and the electricity taking device and the voltage sensor are connected in parallel to a 10kV power transmission line acquisition component.
3. The high-voltage ammeter according to claim 2, characterized in that the bottom end of the collecting assembly is connected with a transmission line (2) for connection through the transmission line and the high-voltage ammeter (14), a connecting wire (3) is installed on the outer wall of the shell (1), one end of the connecting wire (3) extends to the inner wall of the shell (1) to be connected with the collecting assembly, and the other end is connected with a three-phase electric wire.
4. A high-voltage electricity meter according to claim 3, characterized in that said connection line (3) is connected together with one of the three-phase transmission lines by means of a clamp.
5. The high voltage electricity meter of claim 4, wherein the wire clamp comprises; the sealing cover (4), one side of the bottom end of the sealing cover (4) is rotationally connected with one side of the top end of the shell (1), the outer sides of the other ends of the sealing cover and the shell are respectively fixedly provided with a first connecting block (10) and a second connecting block (11), and the first connecting block (10) and the second connecting block (11) are fixed through bolts.
6. The high-voltage ammeter according to claim 5, wherein the bottom end of the cover (4) and the top end of the housing (1) are provided with semicircular connecting grooves (5) corresponding to each other for connecting with a power line for measuring current and fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320292186.7U CN219574211U (en) | 2023-02-23 | 2023-02-23 | High-voltage ammeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320292186.7U CN219574211U (en) | 2023-02-23 | 2023-02-23 | High-voltage ammeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219574211U true CN219574211U (en) | 2023-08-22 |
Family
ID=87664287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320292186.7U Active CN219574211U (en) | 2023-02-23 | 2023-02-23 | High-voltage ammeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219574211U (en) |
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2023
- 2023-02-23 CN CN202320292186.7U patent/CN219574211U/en active Active
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