CN214900312U - Uninterrupted protection device - Google Patents
Uninterrupted protection device Download PDFInfo
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- CN214900312U CN214900312U CN202121341947.0U CN202121341947U CN214900312U CN 214900312 U CN214900312 U CN 214900312U CN 202121341947 U CN202121341947 U CN 202121341947U CN 214900312 U CN214900312 U CN 214900312U
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Abstract
The utility model discloses a protection device that does not have a power failure, concretely relates to power equipment technical field, its technical scheme is: including box unit, hinge and case lid, the case lid is installed in box unit upper end, hinged joint is between box unit and case lid, still includes: the uninterrupted power supply protection device is arranged inside the box body unit; the inside protection device and the current loop of being equipped with of protection device do not cut off power supply, the current loop sets up to preventing open circuit handle switching circuit, the inside control power supply circuit and the power return circuit of setting up of protection device do not cut off power supply, control power supply circuit adopts and prevents loop handle switching circuit, power return circuit adopts DC power supply work, the beneficial effects of the utility model are that: through setting up a protection device that does not have a power failure, reduce the power off time and the power off number of times of circuit, the on-the-spot wiring is simple, ensures high-tension apparatus reliable operation, improves the power supply reliability of electric wire netting.
Description
Technical Field
The utility model relates to a power equipment field, concretely relates to protection device that does not have a power failure.
Background
The power equipment mainly comprises two types of power generation equipment and power supply equipment, wherein the power equipment in a power system is many, and is generally divided into electric primary equipment and electric secondary equipment according to different functions of the power equipment in operation, and the power equipment cannot be separated from protection operation in operation according to the regulation of a power grid safety regulation; the 10kV and 35kV line protection devices are relatively rough in overall process compared with high-voltage-class protection devices, faults of the protection devices are prone to occurring, the faults cannot be processed in time, primary equipment is forced to stop running, economic loss is brought, and reliability of power supply is reduced; important users cannot power off, the protection device has general faults, equipment can only operate with diseases, and hidden dangers are buried for safe operation of a power grid.
The prior art has the following defects: the existing technical means can not realize that when the protection fault occurs, power failure is not caused to the outside, and the fault of the protection device can be processed only by long-time power failure of a line.
Therefore, it is necessary to develop a protection device without power failure.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a protection device that does not have a power failure through setting up a protection device that does not have a power failure, reduces the power off time and the power failure number of times of circuit, and the on-the-spot wiring is simple, and the reliable operation of guarantee high-tension apparatus improves electric wire netting power supply reliability to solve the problem that the circuit must have a power failure for a long time and just can handle the protection device trouble.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a protection device that does not have a power failure, includes box unit, hinge and case lid, the case lid is installed in box unit upper end, hinged joint is between box unit and case lid, still includes: the uninterrupted power supply protection device is arranged inside the box body unit;
the protection device and the current loop are arranged inside the uninterrupted power protection device, the current loop is set to be an open-circuit-preventing handle switching loop, a control power supply loop and a power supply loop are arranged inside the uninterrupted power protection device, the control power supply loop adopts the loop-preventing handle switching loop, and the power supply loop adopts a direct-current power supply to work.
Preferably, a first change-over switch and a second change-over switch are arranged in the current loop, the first change-over switch and the second change-over switch are electrically connected with the current transformer, and the uninterrupted power protection device is electrically connected with the current transformer.
Preferably, a change-over switch III is arranged in the control power supply loop, the change-over switch III is electrically connected with the circuit breaker, and the uninterrupted power protection device is electrically connected with the circuit breaker.
Preferably, the box body unit is made of iron sheet, and an inlet wire power supply port is installed at the side end of the box body unit.
Preferably, the upper end of the uninterrupted power protection device is provided with an operation panel, and a handle is installed at the side end of the box unit.
Preferably, an alternating current outlet is arranged at the front end of the box body unit, and a direct current power supply wiring port is arranged on the right side of the alternating current outlet.
Preferably, the upper end of the box body unit is provided with a connecting buckle, and the upper end of the connecting buckle is connected with the box cover.
The utility model has the advantages that:
the protection screen is integrated in the movable box body, the protection screen has the advantage of simplifying the field wiring mode on the premise of ensuring safety, the protection tripping and switching-on functions are realized, the fault protection device is replaced quickly, the fault device is thrown away under the condition that a line does not lose protection, the problem that the high-voltage equipment is powered off for a long time due to the fault of the protection device is solved, the power-off time and times of the line are reduced due to the development of the protection device without power outage, the power supply reliability is improved, and the risk in the process of switching a current loop and a control loop is reduced.
Drawings
Fig. 1 is a top view of a protection device provided by the present invention;
fig. 2 is a front view of a protection device without power outage provided by the present invention;
fig. 3 is a right side view of a non-power-off protection device provided by the present invention;
fig. 4 is a schematic diagram of a protection device without power outage provided by the present invention;
fig. 5 is a circuit connection diagram of a non-power-off protection device and a current transformer end in the non-power-off protection device provided by the present invention;
fig. 6 is a circuit connection diagram of a non-power-off protection device and a circuit breaker end in the non-power-off protection device provided by the utility model.
In the figure: the device comprises a box body unit 1, a hinge 11, a box cover 12, an iron sheet 13, a connecting buckle 14, an alternating current outlet 15, a direct current power supply wiring port 16, an incoming line power supply port 17, a lifting handle 18, a non-power-off protection device 2, a protection device 21, an operation panel 211, a current loop 22, an open-circuit-preventing handle switching loop 221, a control power supply loop 23, an open-circuit-preventing handle switching loop 231, a power supply loop 24, a direct current power supply 241, a first change-over switch 25, a second change-over switch 26, a current transformer 27, a third change-over switch 28 and a breaker 29.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Referring to fig. 1-6, the utility model provides a protection device without power failure, which comprises a box body unit 1, a hinge 11 and a box cover 12;
further, a cover 12 is mounted on the upper end of the case unit 1, and a hinge 11 is connected between the case unit 1 and the cover 12, and further includes: the uninterrupted power protection device 2 is arranged in the box body unit 1, specifically, the box cover 12 has the function of covering the box body unit 1, the box body unit 1 is packaged to play the role of protecting the uninterrupted power protection device 2 in the box body unit 1, the hinge 11 has the function of connecting the box body unit 1 and the box cover 12, the box cover 12 is convenient to support after the box cover 12 is opened, the uninterrupted power protection device 2 solves the problem that the circuit needs to be powered off for a long time when the circuit has a fault of the protection device, simplifies the complexity of wiring, reduces the risk in the process of switching a current loop and a control loop, runs stably for a long time, has simple fixed value setting, can rapidly cut the fault, can cut a fault circuit breaker, does not cause the artificial fault of a CT open circuit and a direct current looped network, and selects a circuit protection device with smaller volume as the circuit protection capable of being embedded into the box body, the secondary wiring in the optimizing device is movable, and a loop is optimized;
the uninterrupted power protection device 2 is internally provided with a protection device 21 and a current loop 22, the current loop 22 is set as an open-circuit-proof handle switching loop 221, the uninterrupted power protection device 2 is internally provided with a control power supply loop 23 and a power supply loop 24, the control power supply loop 23 adopts an open-loop-proof handle switching loop 231, the power supply loop 24 adopts a direct current power supply 241 for working, concretely, the protection device 21 is set as a PCS-9611D protection device which has stable operation and simple setting of a fixed value, the open-loop-proof handle switching loop 221 is adopted for preventing the short circuit of the current loop 22, the open-circuit condition of the current loop of the transformer substation can be effectively avoided, the closed circuit of the control power supply loop 23 is prevented by adopting the open-loop-proof handle switching loop 231, the condition of the current loop of the transformer substation can be effectively avoided, eighteen counter measures of relay protection are required, no alternating current power supply is arranged in the protection screen, the direct current power supply is selected, therefore, the power supply loop 24 works by using the direct current power supply 241, and the direct current power supply 241 can be continuously and smoothly adjusted to adapt to different test items, thereby effectively avoiding the risk of alternating current and direct current, and ensuring the safety of personnel.
Further, a first change-over switch 25 and a second change-over switch 26 are arranged in the current loop 22, the first change-over switch 25 and the second change-over switch 26 are electrically connected with a current transformer 27, the uninterruptible protection device 2 is electrically connected with the current transformer 27, specifically, the fault line protection measurement and control device is disconnected with the current transformer 27 by operating the first change-over switch 25 and the second change-over switch 26, the current transformer 27 is set to be BH-0.66CT, and secondary side windings of the three groups of current transformers 27 are electrically connected with three current input ends of the uninterruptible protection device 2, so that the three-phase current of the line is monitored by the fault protection measurement and control device instead of the fault protection measurement and control device.
Further, a change-over switch three 28 is arranged in the control power supply loop 23, the change-over switch three 28 is electrically connected with a circuit breaker 29, and the uninterruptible protection device 2 is electrically connected with the circuit breaker 29, specifically, in the control power supply loop 23, the connection of the switching-off, switching-on and common negative power supply between the uninterruptible protection device 2 and the circuit breaker 29 is realized by rotating the change-over switch three 28, the circuit breaker 29 is set to be NXB, and the circuit breaker 29 has the functions of controlling the negative power supply of the power supply, controlling the switching-on and switching-off to be connected with the uninterruptible protection device 2;
furthermore, the box body unit 1 is made of an iron sheet 13, the side end of the box body unit 1 is provided with the wire inlet power supply port 17, specifically, the box body unit 1 made of the iron sheet 13 is easy to process, attractive in appearance, convenient to carry and low in cost, and the wire inlet power supply port 17 has the function of connecting a power line;
further, an operation panel 211 is arranged at the upper end of the uninterruptible protection device 2, and a handle 18 is installed at the side end of the box body unit 1, specifically, the operation panel 211 has an effect of facilitating an operator to operate the uninterruptible protection device 2, the power failure time when the circuit breaks down is reduced, the handle 18 has an effect of facilitating the carrying of the box body unit 1, and the uninterruptible protection device can move;
further, an alternating current outlet 15 is installed at the front end of the box body unit 1, a direct current power supply wiring port 16 is arranged on the right side of the alternating current outlet 15, specifically, the alternating current outlet 15 has the function of connecting an alternating current line, and the direct current power supply wiring port 16 has the function of connecting a direct current power supply line;
further, the upper end of the case unit 1 is provided with a connecting buckle 14, the upper end of the connecting buckle 14 is connected with the case cover 12, and specifically, the connecting buckle 14 has the function of fastening the case cover 12 and the case unit 1.
The utility model discloses a use as follows: when the utility model is used, the protection device 21 and the current loop 22 are arranged inside the uninterrupted protection device 2, the current loop 22 is set as an open-circuit-proof handle switching loop 221, the control power loop 23 and the power loop 24 are arranged inside the uninterrupted protection device 2, the control power loop 23 adopts a loop-proof handle switching loop 231, the power loop 24 adopts a direct current power source 241 to work, the connecting buckle 14 is opened, the box cover 12 is opened, a direct current power line and an alternating current line are connected to the box body unit 1, the first change-over switch 25 and the second change-over switch 26 are operated to disconnect the fault line protection measurement and control device from the current transformer 27, the secondary side windings of the three groups of current transformers 27 are electrically connected with the three current input ends of the uninterrupted protection device 2, thereby replacing the fault protection measurement and control device to monitor the three-phase current of the line, the first change-over switch 25 is turned to the short-circuit position, and the current connecting piece in the operation of the original device is opened, turning a second change-over switch 26 to a short-circuit position, withdrawing the first change-over switch 25 from operation, at the moment, no current is sampled in the original protection device 21 and the uninterrupted protection device 2, no open circuit exists in the current loop 22, turning the first change-over switch 25 to a working position, withdrawing the second change-over switch 26 from operation, at the moment, the current loop 22 is switched to the uninterrupted protection device from the original protection device, completing the current switching work of the original protection device, recovering the current connection sheet in the loop when the original wiring is recovered after the overhaul is completed, turning the second change-over switch 26 to the short-circuit position, turning the first change-over switch 25 to the withdrawal position, at the moment, the current sampling of the uninterrupted protection device 2 disappears and the current loop 22 has no open circuit, realizing the connection of the opening, closing and common negative power supply between the uninterrupted protection device 2 and the circuit breaker 29 through a third change-over switch 28, and checking the function of the current loop, a relay protection tester is used for simulating a current transformer to lead current into a loop, a current line of the uninterrupted protection device 2 is connected into a current loop 22, the current sampling of the original protection device is correct, the uninterrupted protection device 2 has no current sampling, and the current loop 22 has no open circuit, so that the fault protection device in operation can be replaced quickly and reliably, and the power failure time and times of high-voltage equipment are reduced.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (7)
1. The utility model provides a protection device that does not have a power failure, includes box unit (1), hinge (11) and case lid (12), install in box unit (1) upper end case lid (12), hinge (11) are connected between box unit (1) and case lid (12), its characterized in that still includes: the uninterrupted power supply protection device (2), the uninterrupted power supply protection device (2) is arranged in the box body unit (1);
protection device (21) and current loop (22) are equipped with to uninterrupted power protection device (2) inside, current loop (22) set up to prevent open circuit handle switching circuit (221), uninterrupted power protection device (2) inside sets up control power supply circuit (23) and power supply circuit (24), control power supply circuit (23) adopt to prevent loop handle switching circuit (231), power supply circuit (24) adopt DC power supply (241) work.
2. A non-power-off protection device as claimed in claim 1, wherein: the current loop (22) is internally provided with a first change-over switch (25) and a second change-over switch (26), the first change-over switch (25) and the second change-over switch (26) are electrically connected with a current transformer (27), and the uninterrupted power protection device (2) is electrically connected with the current transformer (27).
3. A non-power-off protection device as claimed in claim 1, wherein: be equipped with change over switch three (28) in control power supply circuit (23), change over switch three (28) electric connection circuit breaker (29), uninterrupted power protection device (2) electric connection circuit breaker (29).
4. A non-power-off protection device as claimed in claim 1, wherein: the box body unit (1) is made of an iron sheet (13), and a wire inlet power supply port (17) is installed at the side end of the box body unit (1).
5. A non-power-off protection device as claimed in claim 1, wherein: an operation panel (211) is arranged at the upper end of the uninterrupted power protection device (2), and a handle (18) is installed at the side end of the box body unit (1).
6. A non-power-off protection device as claimed in claim 1, wherein: an alternating current outlet (15) is arranged at the front end of the box body unit (1), and a direct current power supply wiring port (16) is arranged on the right side of the alternating current outlet (15).
7. A non-power-off protection device as claimed in claim 1, wherein: the upper end of the box body unit (1) is provided with a connecting buckle (14), and the upper end of the connecting buckle (14) is connected with the box cover (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121341947.0U CN214900312U (en) | 2021-06-17 | 2021-06-17 | Uninterrupted protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121341947.0U CN214900312U (en) | 2021-06-17 | 2021-06-17 | Uninterrupted protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214900312U true CN214900312U (en) | 2021-11-26 |
Family
ID=78905331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121341947.0U Active CN214900312U (en) | 2021-06-17 | 2021-06-17 | Uninterrupted protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214900312U (en) |
-
2021
- 2021-06-17 CN CN202121341947.0U patent/CN214900312U/en active Active
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