CN212587433U - Automatic low-voltage reverse power transmission cutting device for power distribution network - Google Patents
Automatic low-voltage reverse power transmission cutting device for power distribution network Download PDFInfo
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- CN212587433U CN212587433U CN202021667701.8U CN202021667701U CN212587433U CN 212587433 U CN212587433 U CN 212587433U CN 202021667701 U CN202021667701 U CN 202021667701U CN 212587433 U CN212587433 U CN 212587433U
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- iron core
- power transmission
- circuit board
- transmission line
- annular
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Abstract
The utility model discloses a distribution network low pressure is turned over and is transmitted electricity automatic cutout device relates to distribution network technical field. The utility model discloses a structure includes shell, annular iron core, induction coil, electric putter, circuit board, the central axis through-hole of shell is for leading to the line hole, and the power transmission line passes and leads to the line hole, the annular cylinder body cavity is the installation cavity in the shell, the left end at the installation cavity is fixed to annular iron core, one section iron core separation on annular iron core's top is for removing the iron core, induction coil twines on one section of annular iron core front side, electric putter fixes at the installation cavity top, and the right side wall fixed connection of left end and removal iron core, circuit board fixed mounting is in the bottom of installation cavity, institute circuit board and induction coil and electric putter electric connection, with transmission switch, the distribution terminal wireless connection of power transmission line. The utility model discloses can implement and monitor transmission line medium voltage to control transmission switch disconnection reverse power transmission.
Description
Technical Field
The utility model relates to a distribution network technical field especially relates to a distribution network low pressure is turned over and is transmitted electricity automatic cutout device is related to.
Background
The power plant power transmission is to transmit power generated by the power plant to a system, and the reverse power transmission is to transmit power from the system to the power plant. The reason for generating reverse power transmission is that besides manual control, when the power supply end does not generate power, the load reversely supplies power to the power supply end, so that the person who is in overhaul is easily injured by electricity. The patent with application number 201720628689.1 provides an automatic cut-off device matched with a single-network low-voltage reverse power transmission, which structurally comprises a clamping groove arranged on a shell, an electromagnetic coil fixed in the clamping groove, and two control electrodes of the electromagnetic coil connected with a live wire and a zero wire of a power grid side circuit through contacts on the shell; the upper side of the magnetic yoke is connected with one end of an upper spring, the other end of the upper spring is connected with an upper armature, the lower side of the magnetic yoke is connected with one end of a lower spring, and the other end of the lower spring is connected with a lower armature; the upper armature and the lower armature of the spring are respectively connected with the upper counter-force spring and the lower counter-force spring; the lower armature is fixed with a moving contact, the static contact is fixed on the shell, and the moving contact corresponds to the static contact. All the parameter settings of the spring of this patent all match with solenoid and yoke, so the requirement to the spring is quite high, the production degree of difficulty of spring is high.
Accordingly, one skilled in the art provides a subject to solve the problems set forth in the background above.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that it is accurate to overcome prior art's parameter requirement, and the production degree of difficulty is high.
In order to solve the technical problems, the utility model provides an automatic cutting device for low-voltage reverse power transmission of a power distribution network, which comprises,
the power transmission line is arranged in the shell, the shell is of a cylindrical structure, a through hole in the central axis of the shell is a line through hole, the power transmission line penetrates through the line through hole, a circular cylinder cavity in the shell is an installation cavity, and the shell plays a role in protecting an internal structure;
the annular iron core is of a circular cylinder structure and is fixed at the left end of the installation cavity, a section of iron core at the top end of the annular iron core is separated into movable iron cores, a magnetic field is generated around the power transmission line when the power transmission line is electrified, and an annular magnetic field is formed in the annular iron core;
the induction coil is wound on a section of the front side of the annular iron core, and when an annular magnetic field is formed in the annular iron core, induction current is formed in the induction coil;
the electric push rod is fixed at the top of the installation cavity, a telescopic rod end of the electric push rod is fixedly connected with the right side wall of the movable iron core, and the electric push rod drives the movable iron core to move towards the right side when being shortened, so that the annular iron core cannot form a loop and cannot form an annular magnetic field;
the circuit board, circuit board fixed mounting are in the bottom of installation cavity, be provided with signal transmitter, signal receiver, signal processing circuit, control circuit on the circuit board, circuit board and induction coil and electric putter electric connection, with transmission of electricity switch, the distribution terminal wireless connection of power transmission line, the signal processing circuit handles the signal of telecommunication of induction coil response, control circuit handles and judges the signal of telecommunication to control signal transmitter, signal receiver transmission information, control electric putter operation.
As a further aspect of the present invention: the power transmission line is characterized in that two ends of the through line hole are respectively fixed with a rubber ring, the rubber rings are of circular cylindrical structures, the outer arc-shaped wall of each rubber ring is fixed on the wall of the through line hole, the power transmission line penetrates through the ring center of each rubber ring, and the rubber rings support the power transmission line at the position of the central axis of the through line hole.
As a further aspect of the present invention: the right side fixed mounting of installation cavity has the battery, the battery passes through the wire and is connected with the circuit board, the battery passes through the circuit board and provides the electric energy for electric putter.
As a further aspect of the present invention: fixed mounting has the pilot lamp in the bottom lateral wall through-hole of installation cavity, pilot lamp and circuit board electric connection, the pilot lamp scintillation makes things convenient for the workman to overhaul at night.
As a further aspect of the present invention: the LED display screen is installed in the groove in the front side wall of the shell and is electrically connected with the circuit board, the circuit board transmits processed induced electrical signals to the LED display screen, the LED display screen displays the voltage value of the transmission line, and when maintenance personnel do not need to maintain, the clamp meter is used for measuring the voltage.
As a further aspect of the present invention: the left side of transmission of electricity switch is the input electric wire, and the right side is the output electric wire, the cover has a shell and inner structure on the input electric wire, the cover has a shell and inner structure on the output electric wire, input electric wire left end termination power, right-hand member connect earthing switch, and the right-hand member branch road is connected with transmission of electricity switch input end through the input electric wire, output electric wire left end termination earthing switch No. two, right-hand member termination load, and the left end branch road is connected with transmission of electricity switch output end through the output electric wire, and the shell circuit on the input electric wire produces induction circuit earlier, then earthing switch and earthing switch disconnection No. two, and transmission of electricity switch merges, and the shell circuit on the output electric wire produces induction circuit earlier, then earthing switch, earthing switch No. two and transmission of electricity switch disconnection.
The utility model has the advantages that:
(1) the utility model discloses set up annular iron core, induction coil and circuit board, during the use, when the switch-on has the electric current in the power transmission line, the power transmission line produces induction magnetic field outward, form annular magnetic field in the annular iron core, form induced-current in the induction coil, circuit board received induced-current signal, and convert signal processing into power transmission line voltage signal, if voltage in the power transmission line is less than when setting for the threshold value, signal transmitter sends the signal to power transmission switch controller on the circuit board, the power transmission switch controller disconnection, make the anti-power transmission disconnection in the power transmission line. The utility model discloses can implement and monitor transmission line medium voltage to control transmission switch disconnection reverse power transmission.
(2) The utility model discloses set up the LED display screen, the voltage signal that the circuit board will record sends LED display screen display to show, but direct reading voltage information when the maintainer overhauls need not to reuse the shallow table and measures.
Drawings
Fig. 1 is a front sectional view of the present invention;
fig. 2 is a left side sectional view of the present invention;
fig. 3 is a schematic structural diagram of the wire and the switch.
Wherein: the device comprises a shell 10, a mounting cavity 11, a through hole 12, an annular iron core 13, a movable iron core 14, an electric push rod 15, an induction coil 16, a battery 17, a rubber ring 18, a circuit board 19, a power transmission switch 20, a first grounding switch 21, a second grounding switch 22, an input wire 23, an output wire 24, an input branch wire 25, an output branch wire 26 and an indicator lamp 27.
Detailed Description
The structure of the automatic cut-off device for low-voltage reverse power transmission of the power distribution network provided by the embodiment is shown in fig. 1-3, and comprises,
the power transmission line protection device comprises a shell 10, wherein the shell 10 is of a cylindrical tubular structure, a through hole in the central axis of the shell 10 is a line through hole 12, a power transmission line penetrates through the line through hole 12, an annular cylindrical cavity in the shell 10 is an installation cavity 11, and the shell 10 plays a role in protecting an internal structure;
the annular iron core 13 is of an annular cylindrical structure, the annular iron core 13 is fixed at the left end of the installation cavity 11, a section of iron core at the top end of the annular iron core 13 is separated into a movable iron core 14, a magnetic field is generated around the power transmission line when the power transmission line is electrified, and an annular magnetic field is formed in the annular iron core 13;
the induction coil 16 is wound on a section of the front side of the annular iron core 13, and when an annular magnetic field is formed in the annular iron core 13, induction current is formed in the induction coil 16;
the electric push rod 15 is fixed at the top of the installation cavity 11, a telescopic rod end of the electric push rod 15 is fixedly connected with the right side wall of the movable iron core 14, and the movable iron core 14 is driven to move towards the right side when the electric push rod 15 is shortened, so that the annular iron core 13 cannot form a loop and an annular magnetic field cannot be formed;
the circuit board 19, circuit board 19 fixed mounting is in the bottom of installation cavity 11, be provided with signal transmitter, signal receiver, signal processing circuit, control circuit on the circuit board 19, circuit board 19 and induction coil 16 and electric putter 15 electric connection, with transmission of electricity switch 20, the distribution terminal wireless connection of power transmission line, the signal processing circuit handles the signal of telecommunication of induction coil 16 induction, control circuit handles and judges the signal of telecommunication to control signal transmitter, signal receiver transmission information, control electric putter 15 operation.
Two ends of the through hole 12 are respectively fixed with a rubber ring 18, the rubber ring 18 is in a circular cylindrical structure, the outer arc-shaped wall of the rubber ring 18 is fixed on the wall of the through hole 12, the power transmission line penetrates through the ring center of the rubber ring 18, and the rubber ring 18 supports the power transmission line at the central axis of the through hole 12.
The right side fixed mounting of installation cavity 11 has battery 17, battery 17 is connected with circuit board 19 through the wire, battery 17 provides the electric energy for electric putter 15 through circuit board 19.
Fixed mounting has pilot lamp 26 in the bottom side wall through-hole of installation cavity 11, pilot lamp 26 and circuit board 19 electric connection, pilot lamp 26 scintillation makes things convenient for the workman to overhaul at night.
Install the LED display screen in the shell 10 preceding lateral wall recess, LED display screen and circuit board 19 electric connection, circuit board 19 sends the induced electrical signal after handling to the LED display screen, the LED display screen shows transmission line voltage numerical value, when need not the maintainer and overhauls, uses the tong-ammeter to measure voltage.
The left side of the power transmission switch 20 is provided with an input wire 23, the right side is provided with an output wire 24, the input wire 23 is sleeved with a shell 10 and an internal structure thereof, the output wire 24 is sleeved with a shell 10 and the internal structure thereof, the left end of the input wire 23 is connected with a power supply, the right end is connected with a first grounding switch 21, the right branch is connected with the input end of the power transmission switch 20 through an input branch wire 25, the left end of the output wire 24 is connected with a second grounding switch 22, the right end is connected with a load, and the left branch is connected with the output end of the power transmission switch 20 through an output branch wire 26, when the circuit of the shell 10 on the input wire 23 generates an induction circuit, the first grounding switch 21 and the second grounding switch 22 are disconnected, the power transmission switch 20 is combined, and when the circuit of the shell 10 on the output wire 24 generates a sensing circuit firstly, the first grounding switch 21, the second grounding switch 22 and the power transmission switch 20 are disconnected.
The utility model discloses a theory of operation: when the power transmission line is used, when current is connected in the power transmission line, an induced magnetic field is generated outside the power transmission line, a ring-shaped magnetic field is formed in the ring-shaped iron core 13, induced current is formed in the induction coil 16, the circuit board 19 receives an induced current signal, processes and converts the signal into a power transmission line voltage signal, if the voltage in the power transmission line is lower than a set threshold value, the signal transmitter on the circuit board 19 sends a signal to the controller of the power transmission switch 20, the controller of the power transmission switch 20 is switched off, and the reverse power transmission in the power transmission. The utility model discloses can implement and monitor transmission line medium voltage to control transmission switch disconnection reverse power transmission.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. An automatic cut-off device for low-voltage reverse power transmission of a power distribution network is characterized by comprising,
the power transmission device comprises a shell (10), wherein the shell (10) is of a cylindrical tubular structure, a through hole in the central axis of the shell (10) is a through hole (12), a power transmission line penetrates through the through hole (12), an annular cylinder cavity in the shell (10) is an installation cavity (11), and the shell (10) plays a role in protecting an internal structure;
the annular iron core (13), the annular iron core (13) is a circular cylinder structure, the annular iron core (13) is fixed at the left end of the installation cavity (11), a section of iron core at the top end of the annular iron core (13) is separated into a movable iron core (14), a magnetic field is generated around the power transmission line when the power transmission line is electrified, and an annular magnetic field is formed in the annular iron core (13);
the induction coil (16), the induction coil (16) is wound on a section of the front side of the annular iron core (13), and when an annular magnetic field is formed in the annular iron core (13), induction current is formed in the induction coil (16);
the electric push rod (15), the electric push rod (15) is fixed on the top of the installation cavity (11), the telescopic rod end of the electric push rod (15) is fixedly connected with the right side wall of the movable iron core (14), and the movable iron core (14) is driven to move towards the right side when the electric push rod (15) is shortened, so that the annular iron core (13) cannot form a loop and an annular magnetic field cannot be formed;
circuit board (19), circuit board (19) fixed mounting is in the bottom of installation cavity (11), be provided with signal transmitter, signal receiver, signal processing circuit, control circuit on circuit board (19), circuit board (19) and induction coil (16) and electric putter (15) electric connection, with transmission of electricity switch (20) of power transmission line, distribution terminal wireless connection, the signal processing circuit handles the signal of telecommunication of induction coil (16) response, control circuit handles and judges the signal of telecommunication to control signal transmitter, signal receiver transmit information, control electric putter (15) operation.
2. The automatic cut-off device for low-voltage reverse power transmission of the power distribution network according to claim 1, characterized in that: the power transmission line is characterized in that two ends of the through line hole (12) are respectively fixed with a rubber ring (18), the rubber ring (18) is of a circular cylinder structure, the outer arc-shaped wall of the rubber ring (18) is fixed on the wall of the through line hole (12), the power transmission line penetrates through the ring center of the rubber ring (18), and the rubber ring (18) supports the power transmission line at the position of the central axis of the through line hole (12).
3. The automatic cut-off device for low-voltage reverse power transmission of the power distribution network according to claim 1, characterized in that: the right side fixed mounting of installation cavity (11) has battery (17), battery (17) are connected with circuit board (19) through the wire, battery (17) provide the electric energy for electric putter (15) through circuit board (19).
4. The automatic cut-off device for low-voltage reverse power transmission of the power distribution network according to claim 1, characterized in that: fixed mounting has pilot lamp (26) in the bottom side wall through-hole of installation cavity (11), pilot lamp (26) and circuit board (19) electric connection, pilot lamp (26) scintillation makes things convenient for the workman to overhaul at night.
5. The automatic cut-off device for low-voltage reverse power transmission of the power distribution network according to claim 1, characterized in that: install the LED display screen in the shell (10) preceding lateral wall recess, LED display screen and circuit board (19) electric connection, circuit board (19) send the induced electrical signal after will handling to the LED display screen, the LED display screen shows transmission line voltage numerical value, when need not the maintainer and overhauls, uses the tong-ammeter to measure voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021667701.8U CN212587433U (en) | 2020-08-11 | 2020-08-11 | Automatic low-voltage reverse power transmission cutting device for power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021667701.8U CN212587433U (en) | 2020-08-11 | 2020-08-11 | Automatic low-voltage reverse power transmission cutting device for power distribution network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212587433U true CN212587433U (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021667701.8U Expired - Fee Related CN212587433U (en) | 2020-08-11 | 2020-08-11 | Automatic low-voltage reverse power transmission cutting device for power distribution network |
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| CN (1) | CN212587433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113723638A (en) * | 2021-11-03 | 2021-11-30 | 国网江西省电力有限公司电力科学研究院 | 10kV line maintenance reverse power transmission verification method and system with distributed power supply |
-
2020
- 2020-08-11 CN CN202021667701.8U patent/CN212587433U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113723638A (en) * | 2021-11-03 | 2021-11-30 | 国网江西省电力有限公司电力科学研究院 | 10kV line maintenance reverse power transmission verification method and system with distributed power supply |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210223 Termination date: 20210811 |
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| CF01 | Termination of patent right due to non-payment of annual fee |