CN211605022U - High-voltage circuit breaker circuit board with double anti-tripping functions - Google Patents
High-voltage circuit breaker circuit board with double anti-tripping functions Download PDFInfo
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- CN211605022U CN211605022U CN202020764491.8U CN202020764491U CN211605022U CN 211605022 U CN211605022 U CN 211605022U CN 202020764491 U CN202020764491 U CN 202020764491U CN 211605022 U CN211605022 U CN 211605022U
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Abstract
The utility model relates to a high voltage circuit breaker technical field. The utility model discloses a take high voltage circuit breaker circuit board of two anti-bouncing functions, prevent jumping return circuit, high voltage circuit breaker and prevent jumping return circuit, high voltage circuit breaker combined floodgate return circuit and high voltage circuit breaker separating brake return circuit including the microcomputer protection device, the inside of high voltage circuit breaker anti-bouncing return circuit still is equipped with auxiliary switch, auxiliary switch is arranged in being connected with the jump position monitoring circuit contact among the microcomputer protection device. The utility model discloses have two and prevent jumping the function, the reliability is higher, guarantees the safe operation of system better.
Description
Technical Field
The utility model belongs to the technical field of high voltage circuit breaker, specifically relate to a high voltage circuit breaker circuit board of two anti-bouncing functions in area.
Background
High-voltage circuit breakers normally can switch off and on no-load and load currents in a high-voltage circuit. When the system is in fault, the protection device and the automatic device are matched to cut off the fault current rapidly, so that the accident is prevented from being expanded, and the safe operation of the system is ensured. Therefore, the high-voltage circuit breaker plays an important role in reliability and stability of grid operation.
In the operation process of the circuit breaker, due to the reason of a control switch or the reason of a contact of an automatic device, after the circuit breaker is switched on, the contact of a starting loop is not disconnected, a switching-on command always exists, at the moment, if a relay performs protection action, the circuit breaker trips, but due to the fact that a switching-on pulse always exists, the circuit breaker can be switched on again after tripping. If the line fault is a permanent fault, the circuit breaker is tripped out again by the protection, and the circuit breaker is switched on by the continuously existing switching-on pulse, so that a plurality of tripping-on phenomena occur, and the phenomenon is called 'jumping'. The circuit breaker is very dangerous when the circuit breaker has a 'jumping' fault, which easily causes the mechanism damage, even causes the circuit breaker explosion, causes the accident expansion, and can cause great economic loss and great personal casualty accidents to the society. Therefore, the prevention of the jumping accident of the circuit breaker is the basis for ensuring the safe and stable operation of the power grid.
The existing circuit breaker jump prevention is mainly realized by adopting an operation box jump prevention loop or a high-voltage circuit breaker jump prevention loop, and the existing circuit breaker jump prevention only has a single jump prevention function, and the reliability is still to be improved.
Disclosure of Invention
An object of the utility model is to provide a take high voltage circuit breaker circuit board of two anti-bouncing functions is used for solving the technical problem that the above-mentioned exists.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a take high-voltage circuit breaker circuit board of two anti-bouncing functions, includes that microcomputer protection device prevents jumping return circuit, high-voltage circuit breaker prevent jumping return circuit, high-voltage circuit breaker combined floodgate return circuit and high-voltage circuit breaker separating brake return circuit, the inside of high-voltage circuit breaker prevent jumping the return circuit and still is equipped with auxiliary switch, auxiliary switch is used for monitoring the return circuit contact with the jump position among the microcomputer protection device and is connected.
Furthermore, the high-voltage circuit breaker circuit board is provided with a wiring terminal of an auxiliary switch.
Furthermore, a first overcurrent electronic protection element and a second overcurrent electronic protection element are respectively connected in the high-voltage circuit breaker closing loop and the high-voltage circuit breaker opening loop in series.
Furthermore, the first overcurrent electronic protection element and the second overcurrent electronic protection element are both self-recovery fuses.
Further, the self-recovery fuse is of a type WH 250-2000.
Furthermore, the device also comprises a closing locking loop.
Furthermore, a third overcurrent electronic protection element is connected in series in the closing locking loop.
Furthermore, the third overcurrent electronic protection element is a self-recovery fuse.
Further, the energy storage device also comprises an energy storage loop.
The utility model has the advantages of:
the utility model discloses have two and prevent jumping the function, the reliability is higher, guarantees the safe operation of system better.
The utility model discloses a set up and flow through electronic protection component, maintain the dynamic balance of energy in the secondary circuit, to high voltage circuit breaker's combined floodgate coil, separating brake coil satisfactory completion combined floodgate, separating brake action carry out safety protection, further improve reliability and security, and need not change by the manual work, it is more convenient to use.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit board according to an embodiment of the present invention.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1 and 2, a high-voltage circuit breaker circuit board with double anti-tripping functions comprises a microcomputer protection device anti-tripping loop, a high-voltage circuit breaker closing loop, a high-voltage circuit breaker opening loop, a closing locking loop and an energy storage loop, wherein an auxiliary switch K01 is further arranged in an internal anti-tripping relay K0 of the high-voltage circuit breaker anti-tripping loop, the auxiliary switch K01 comprises a normally closed contact NC1, a normally open contact N01 and a movable contact C1, and the auxiliary switch K01 is connected with a tripping position monitoring loop contact in the microcomputer protection device after being used for a circuit breaker cabinet assembly, so that the double anti-tripping functions are realized, the reliability is higher, and the safe operation of a system is better ensured.
In this embodiment, the high-voltage circuit breaker is provided with a terminal 100 of an auxiliary switch K01 for leading out the auxiliary switch K01, so as to be conveniently connected with a jump position monitoring circuit contact in a microcomputer protection device.
In order to solve the problem, in the specific embodiment, a first overcurrent electronic protection element FU1 and a second overcurrent electronic protection element FU1 are respectively connected in series in the closing loop and the opening loop of the high-voltage circuit breaker, so as to protect the closing coil and the opening coil and prevent the closing coil and the opening coil from being damaged by burning and rejecting movement.
In the specific embodiment, the first overcurrent electronic protection element FU1 and the second overcurrent electronic protection element FU1 are self-recovery fuses, the model is WH250-2000, and the maximum working current is (25 degrees, 250V) 2A; start-up protection minimum current: (25 °, 250V) 4A; the maximum borne current is 10A; the maximum voltage which can be borne is 250V; initial minimum resistance before operation: 0.2 omega. But not limited to this, in other embodiments, other existing self-recovery overcurrent electronic protection elements may be used.
The self-recovery fuse element is connected in series in the circuit and is in a low-resistance state under the normal condition, so that the normal work of the circuit is ensured. When the circuit is short-circuited or abnormal large current is connected in series, the self-heating of the self-recovery fuse element increases the impedance of the self-recovery fuse element, limits the current to be small enough and plays a role in overcurrent protection. Meanwhile, when the temperature of the external environment rises suddenly, the over-temperature protection effect can be achieved after the environment reaches the switching temperature of the product. When the fault of overcurrent and overheat is eliminated, the self-recovery fuse element automatically recovers to a low-resistance state.
Therefore, when the high-voltage circuit breaker receives an action instruction of opening or closing, and the opening or closing release cannot normally realize opening or closing action, the action instruction is continuously kept, and when the opening or closing coil is always electrified, the first overcurrent electronic protection element FU1 and the second overcurrent electronic protection element FU are in a non-conduction state in the loop within 10s, and the action instruction of opening or closing is released.
In this embodiment, a third overcurrent electronic protection element FU3 is connected in series in the closing latching loop to protect the closing latching coil, so as to prevent the closing latching coil from being burned out and the latching from failing, thereby further improving the reliability.
In this specific embodiment, the third overcurrent electronic protection element FU3 is a self-recovery fuse, the model is WH250-2000, and the maximum working current is (25 °, 250V) 2A; start-up protection minimum current: (25 °, 250V) 4A; the maximum borne current is 10A; the maximum voltage which can be borne is 250V; initial minimum resistance before operation: 0.2 omega. But not limited to this, in other embodiments, other existing self-recovery overcurrent electronic protection elements may be used.
The working principle of the tripping-proof loop, the high-voltage breaker closing loop, the high-voltage breaker opening loop, the closing locking loop and the energy storage loop of the microcomputer protection device can refer to the prior art, and the working principle is not described in detail.
The specific circuit connection relationship of this embodiment is shown in fig. 1, which is not described in detail.
The utility model has the advantages of two prevent jumping the function, the reliability is higher, guarantees the safe operation of system better, and in the electric trip circuit that prevents of current start, voltage holding formula, still has to prevent to cause the protection outlet contact arc breaking and burn out because of the circuit breaker auxiliary contact adjustment in trip circuit is improper or shift too slowly.
The utility model discloses a set up and flow through electronic protection component, maintain the dynamic balance of energy in the secondary circuit, to high voltage circuit breaker's combined floodgate coil, separating brake coil satisfactory completion combined floodgate, separating brake action carry out safety protection, further improve reliability and security, and need not change by the manual work, it is more convenient to use.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a take high voltage circuit breaker circuit board of two anti-bouncing functions, prevents jumping return circuit, high voltage circuit breaker and prevents jumping return circuit, high voltage circuit breaker combined floodgate return circuit and high voltage circuit breaker separating brake return circuit including computer protection device, its characterized in that: the internal anti-tripping relay of the anti-tripping loop of the high-voltage circuit breaker is also provided with an auxiliary switch, and the auxiliary switch is used for being connected with a tripping position monitoring loop contact in a microcomputer protection device.
2. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 1, characterized in that: the high-voltage circuit breaker circuit board is provided with a wiring terminal of an auxiliary switch.
3. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 1, characterized in that: and a first overcurrent electronic protection element and a second overcurrent electronic protection element are respectively connected in the switching-on loop and the switching-off loop of the high-voltage circuit breaker in series.
4. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 3, characterized in that: the first overcurrent electronic protection element and the second overcurrent electronic protection element are both self-recovery fuses.
5. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 4, characterized in that: the model of the self-recovery fuse is WH 250-2000.
6. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 1, characterized in that: the device also comprises a closing locking loop.
7. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 6, characterized in that: and a third overcurrent electronic protection element is connected in series in the closing locking loop.
8. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 7, characterized in that: the third overcurrent electronic protection element is a self-recovery fuse.
9. The high-voltage circuit breaker circuit board with the double anti-tripping function according to claim 1, characterized in that: also comprises an energy storage loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764491.8U CN211605022U (en) | 2020-05-11 | 2020-05-11 | High-voltage circuit breaker circuit board with double anti-tripping functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764491.8U CN211605022U (en) | 2020-05-11 | 2020-05-11 | High-voltage circuit breaker circuit board with double anti-tripping functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211605022U true CN211605022U (en) | 2020-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020764491.8U Active CN211605022U (en) | 2020-05-11 | 2020-05-11 | High-voltage circuit breaker circuit board with double anti-tripping functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211605022U (en) |
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2020
- 2020-05-11 CN CN202020764491.8U patent/CN211605022U/en active Active
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