CN217823768U - Comprehensive control device for all-phase overvoltage - Google Patents
Comprehensive control device for all-phase overvoltage Download PDFInfo
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- CN217823768U CN217823768U CN202221235543.8U CN202221235543U CN217823768U CN 217823768 U CN217823768 U CN 217823768U CN 202221235543 U CN202221235543 U CN 202221235543U CN 217823768 U CN217823768 U CN 217823768U
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Abstract
The utility model relates to a circuit protection technical field specifically is a complete looks overvoltage comprehensive treatment device, the intelligent cabinet temperature adjusting device comprises a cabinet body, fixed mounting has first mounting panel between the front and back both sides of the internal portion of cabinet, the left side fixed mounting of first mounting panel has isolator, the fuse is equipped with in the right side of first mounting panel admittedly, one side fixed mounting of the internal portion of cabinet has the second mounting panel, one side fixed mounting of second mounting panel bottom has electrified display, the bottom of the internal side of cabinet has special transformer, special ground resistor, current transformer and overvoltage suppressor by left to right fixed mounting in proper order. The utility model discloses can restrain the overvoltage peak comprehensively, can absorb the produced a large amount of energy of system's overvoltage, and from the physical characteristic on the fundamental solution system ground fault eliminate the back, when the three-phase voltage restores to balance, the system produced the ferromagnetic resonance that impulse current arouses and the phenomenon that the equipment that causes damages to ground to the quality of undercurrent route selection has been improved.
Description
Technical Field
The utility model relates to a circuit protection technical field specifically is a device is administered in full-phase overvoltage synthesis.
Background
The prior through-slot adopts an overvoltage suppression cabinet to prevent full-phase overvoltage of a circuit system, and the prior overvoltage suppression cabinet mainly comprises an isolating switch, a live display, a fuse, a voltage transformer, a current-limiting fuse and an overvoltage suppressor.
Although the existing overvoltage suppression cabinet can solve the problem of inter-phase overvoltage of a system, when the system has a single-phase earth fault and three-phase voltage is restored to be balanced, the impact current of the system to ground capacitance easily excites ferromagnetic resonance, so that a voltage transformer or a fuse is damaged, and the system is damaged again.
Therefore, in order to solve the problems, the comprehensive treatment device for the full-phase overvoltage is provided by improving the device.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a device is administered in synthesis to full phase overvoltage, the intelligent cabinet temperature adjusting device comprises a cabinet body, fixed mounting has first mounting panel between the front and back both sides of the internal portion of cabinet, the left side fixed mounting of first mounting panel has isolator, the fuse is installed admittedly on the right side of first mounting panel, one side fixed mounting of the internal portion of cabinet has the second mounting panel, one side fixed mounting of second mounting panel bottom has electrified display, the bottom of the internal side of cabinet has special transformer, special grounding resistor, current transformer and overvoltage suppressor by left to right fixed mounting in proper order, the fuse with be connected with special fuse between the overvoltage suppressor.
As an optimized technical scheme of the utility model, still include special type fuse 6, isolator with the fuse special type fuse with electrified display series connection, the fuse special type fuse with parallel connection between the electrified display.
As an optimal technical scheme of the utility model, still include special type fuse 6, the fuse with special type transformer with special type grounding resistor series connection, special type fuse with overvoltage suppressor series connection.
As a preferred technical scheme of the utility model, current transformer with special type ground resistor overvoltage suppressor with electrified display electric connection, current transformer is connected with the ground wire.
As a preferred technical scheme of the utility model, the right side fixed mounting of the internal portion top of cabinet has intelligent computer integrated protection device, intelligent computer integrated protection device with the circuit electric connection at isolator place, intelligent computer integrated protection device adopts standard Modbus communication protocol.
The beneficial effects of the utility model are that:
the utility model discloses can restrain the overvoltage peak comprehensively, can absorb the produced a large amount of energy of system's overvoltage to fundamentally solved system ground fault and eliminated the back from physical characteristic, when the three-phase voltage restores to balance, the system produced the ferromagnetic resonance that impulse current arouses and the phenomenon that the equipment that causes damages to ground, and improved the quality of undercurrent route selection.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a comprehensive treatment device for full-phase overvoltage of the present invention;
FIG. 2 is a circuit diagram of the comprehensive treatment device for full-phase overvoltage of the present invention;
in the figure: 1. an isolating switch; 2. a charged display; 3. a fuse; 4. a special transformer; 5. a special grounding resistor; 6. a special fuse; 7. an overvoltage suppressor; 8. a current transformer; 9. intelligent microcomputer comprehensive protection device; 10. a first mounting plate; 11. a second mounting plate; 12. a cabinet body.
Detailed Description
The preferred embodiments of the present invention will be described hereinafter with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a complete looks overvoltage comprehensive control device technical scheme, includes cabinet body 12, and fixed mounting has first mounting panel 10 between the inside front and back both sides of cabinet body 12, and the left side fixed mounting of first mounting panel 10 has isolator 1, and the right side of first mounting panel 10 is equipped with fuse 3 admittedly, prevents that high voltage system from receiving the influence of voltage transformer trouble itself or a lead wire side trouble.
The inside one side fixed mounting of cabinet body 12 has second mounting panel 11, and one side fixed mounting of second mounting panel 11 bottom has electrified display 2, and electrified display 2 is the prompting safety device that can observe and show whether electrical equipment has operating voltage.
The bottom of the inner side of the cabinet body 12 is fixedly provided with a special transformer 4, a special grounding resistor 5, a current transformer 8 and an overvoltage suppressor 7 from left to right in sequence, when the system operates normally, the special grounding resistor 5 is in a high-resistance state, and is conducted when the system neutral point voltage is in the initial stage of a fault, so that the fault is eliminated and the fault is prevented from being enlarged, the grounding charge energy is absorbed when the single-phase arc light is grounded, the system resonance quickly absorbs the resonance energy, the voltage is limited at a lower level, the accuracy of small current line selection is further improved, the fault point is quickly found to be subjected to non-delay accurate action arc extinction and is respectively eliminated, the arc light and the resonance energy are absorbed, the faults such as arc path re-ignition and the like when the voltage impact is recovered are effectively prevented, the arc light overvoltage can be effectively controlled, and the safe operation of related equipment is ensured.
Still include special type fuse 6, isolator 1 and fuse 3, special type fuse 6 and electrified display 2 series connection, parallel connection between fuse 3, special type fuse 6 and the electrified display 2, through isolator 1 who sets up, can establish reliable insulating gap, separate the equipment or circuit that need overhaul with the power with an obvious disconnection point to guarantee the safety of maintainer and equipment.
The fuse 3 is connected with a special transformer 4 and a special grounding resistor 5 in series, the special fuse 6 is connected with an overvoltage suppressor 7 in series, and the overvoltage suppressor 7 adopts a low dynamic high energy zinc oxide resistance valve plate, so that the residual voltage value can be greatly reduced, and a large amount of energy generated by system overvoltage can be absorbed. The protection characteristics of various overvoltage protection devices in the system are optimized and perfected, and the system overvoltage can be eliminated better.
The current transformer 8 is electrically connected with the special grounding resistor 5, the overvoltage suppressor 7 and the electrified display 2, the current transformer 8 is connected with the ground wire, when the power distribution system breaks down, the neutral point has current to pass through, and the current transformer 8 can detect the current and feed the current back to the measurement and control device.
The right side fixed mounting of the inside top of cabinet body 12 has intelligent computer integrated protection device 9, and the circuit electric connection at intelligent computer integrated protection device 9 and isolator 1 place, intelligent computer integrated protection device 9 adopt standard Modbus communication protocol, and the Modbus communication protocol and the user computer monitored control system of the standard that intelligent computer integrated protection device 9 adopted can real-time remote data transfer.
The working principle is as follows: before using, examine earlier the utility model discloses the security of each structure, wherein isolator 1, electrified display 2, fuse 3, special transformer 4, special type ground resistor 5, special type fuse 6, overvoltage suppressor 7 and current transformer 8 are current electrical components, can use its lectotype installation according to the in-service use demand.
When the comprehensive control device for full-phase overvoltage is used, a voltage transformer (PT) in a circuit system is connected with an intelligent comprehensive microcomputer protection device 9, at the moment, a microcomputer controller in the intelligent comprehensive microcomputer protection device 9 continuously detects a voltage signal provided by the PT in real time, once the system has PT disconnection, overvoltage, low voltage, voltage loss and resonance, the microcomputer controller rapidly and accurately processes the voltage signal provided by the PT by using a DSP technology, so that real-time waveform acquisition is realized, the fault condition of the system is accurately judged, the fault category is displayed, and a corresponding switching value contact signal is output.
When the system has PT disconnection, overvoltage, low voltage and no-voltage faults, the corresponding switching value in the intelligent microcomputer integrated protection device 9 outputs contact signals for alarming, the standard Modbus communication protocol adopted by the intelligent microcomputer integrated protection device 9 and a user microcomputer monitoring system can transmit data in real time and in a long distance,
by the mode, the system voltage can be monitored in real time, system voltage signals are provided for each measurement and control device in the system, overvoltage spikes are comprehensively inhibited, a large amount of energy generated by system overvoltage can be absorbed, the special grounding resistor 5 is in a high-resistance state when the system operates normally, and the special grounding resistor 5 is in a disconnected state, so that the system has the reliability and safety of power supply in an ungrounded mode.
When the system has a fault and the neutral point voltage is at a low level, the special grounding resistor 5 is put into the system to promote the system voltage to be kept at a lower level, and the overvoltage is limited at the lower level, so that the characteristic of the current transformer 8 is in a linear region and is in a high inductive reactance state to make resonance disappear, and the problem that the impact current of the system to the ground capacitor can excite ferromagnetic resonance through PT and cause damage to the PT or PT fuse is solved.
The utility model discloses when single-phase ground connection takes place at the electric wire netting, can guarantee that the electric wire netting power supply does not break off, action time delay is little, and steep wave response characteristic is good, and the initiative protection, arc light ground connection overvoltage all have better inhibiting action, do not receive the influence of system's capacitive current.
The system overvoltage level is limited within an insulation allowable range, the possibility that the insulation of electrical equipment is impacted by high voltage is reduced, the probability of large faults caused by small faults (such as short-circuit faults caused by single-phase grounding) is greatly reduced, and the reliability and the safety of power supply are greatly improved.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a device is administered in synthesis to full phase overvoltage, includes the cabinet body (12), its characterized in that, fixed mounting has first mounting panel (10) between the inside front and back both sides of the cabinet body (12), the left side fixed mounting of first mounting panel (10) has isolator (1), fuse (3) are installed admittedly on the right side of first mounting panel (10), the inside one side fixed mounting of the cabinet body (12) has second mounting panel (11), one side fixed mounting of second mounting panel (11) bottom has electrified display (2), the inboard bottom of the cabinet body (12) is fixed mounting in proper order from left to right has special transformer (4), special earth resistor (5), current transformer (8) and overvoltage suppressor (7).
2. The comprehensive treatment device for full-phase overvoltage according to claim 1, characterized by further comprising a special fuse (6), wherein the isolating switch (1) is connected in series with the fuse (3), the special fuse (6) is connected in series with the live display (2), and the fuse (3), the special fuse (6) and the live display (2) are connected in parallel.
3. A comprehensive all-phase overvoltage management device according to claim 1, further comprising a special fuse (6), wherein said fuse (3) is connected in series with said special transformer (4) and said special grounding resistor (5), and said special fuse (6) is connected in series with said overvoltage suppressor (7).
4. The comprehensive treatment device for full-phase overvoltage according to claim 1, wherein the current transformer (8) is electrically connected with the special grounding resistor (5), the overvoltage suppressor (7) and the live display (2), and the current transformer (8) is connected with a ground wire.
5. The comprehensive treatment device for full-phase overvoltage according to claim 1, characterized in that an intelligent microcomputer comprehensive protection device (9) is fixedly mounted on the right side above the inside of the cabinet body (12), the intelligent microcomputer comprehensive protection device (9) is electrically connected with a circuit where the isolating switch (1) is located, and the intelligent microcomputer comprehensive protection device (9) adopts a standard Modbus communication protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221235543.8U CN217823768U (en) | 2022-05-19 | 2022-05-19 | Comprehensive control device for all-phase overvoltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221235543.8U CN217823768U (en) | 2022-05-19 | 2022-05-19 | Comprehensive control device for all-phase overvoltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217823768U true CN217823768U (en) | 2022-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221235543.8U Active CN217823768U (en) | 2022-05-19 | 2022-05-19 | Comprehensive control device for all-phase overvoltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217823768U (en) |
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2022
- 2022-05-19 CN CN202221235543.8U patent/CN217823768U/en active Active
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