CN213813868U - Circuit breaker control circuit fault point positioning device - Google Patents
Circuit breaker control circuit fault point positioning device Download PDFInfo
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- CN213813868U CN213813868U CN202022238122.8U CN202022238122U CN213813868U CN 213813868 U CN213813868 U CN 213813868U CN 202022238122 U CN202022238122 U CN 202022238122U CN 213813868 U CN213813868 U CN 213813868U
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- 238000004146 energy storage Methods 0.000 description 1
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Abstract
The utility model relates to a circuit breaker control circuit broken string detects technical field, is a circuit breaker control circuit fault point positioner, and it includes the generating line voltage acquisition unit of control unit, display element, collection direct current bus voltage, gathers a plurality of output voltage acquisition unit of each contact output voltage of circuit breaker control circuit, generating line voltage acquisition unit and a plurality of output voltage acquisition unit all are connected with the control unit, and the control unit is connected with the display element. The utility model discloses simple structure, convenient to use, output voltage through every contact with in the circuit breaker control circuit carries out the comparison with direct current bus voltage, confirms the location fault point to shortened staff's fault handling time, reduced the time of electric wire netting high risk operation, reduced electric wire netting equipment operation risk.
Description
Technical Field
The utility model relates to a circuit breaker control circuit broken string detects technical field, is a circuit breaker control circuit fault point positioner.
Background
The circuit breaker control circuit is an important component for realizing the relay protection function and directly influences the safety and reliability of the operation of a power grid. If the relay protection control circuit is broken, the circuit breaker can be directly caused to be incapable of normally switching on and off, so that the protection jump stage and even the breakdown of a power grid are caused, and the factors causing the broken line fault comprise 1, the terminal from a protection screen to a tripping and switching-on coil is loosened, the wiring at a terminal box is loosened, the secondary cable from the protection screen to the terminal box and a mechanism box is damaged, the tripping and switching-on coil is damaged, the auxiliary contact of the circuit breaker is damaged, the auxiliary contact of a mechanism tripping-proof relay is abnormal or the tripping-proof relay does not act correctly, low-oil-pressure locking, low-air-pressure locking, the wiring of each relay contact at the mechanism box is loosened, the relay is jammed, and the circuit breaker energy storage circuit or related contacts are abnormal; 2. cutting the remote/local handle to the local position at the mechanism box; 3. the internal contacts of the relay protection device are damaged. The existing method for detecting the disconnection fault of the circuit breaker control circuit caused by the first factor is only limited to sending an alarm signal to the disconnection state, and the specific fault point of the disconnection still needs to be searched and checked on site by a protection worker, so that the time of high-risk operation of a power grid is prolonged, and the safety of the power grid is very unfavorable.
Disclosure of Invention
The utility model provides a circuit breaker control circuit fault point positioner has overcome above-mentioned prior art not enough, and it can effectively solve the problem that artifical time wasting and energy, inefficiency, the time of having prolonged the electric wire netting high risk operation that exists to the on-the-spot location fault point when current circuit breaker control circuit.
The technical scheme of the utility model is realized through following measure: the utility model provides a circuit breaker control circuit fault point positioner, includes the generating line voltage acquisition unit of control unit, display element, collection direct current bus voltage, gathers a plurality of output voltage acquisition unit of each contact output voltage of circuit breaker control circuit, generating line voltage acquisition unit and a plurality of output voltage acquisition unit all are connected with the control unit, and the control unit is connected with the display element.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the control unit can comprise an analog quantity acquisition module, a display control module and a logic gate unit capable of performing and operation, wherein the analog quantity acquisition module is connected with the logic gate unit, the logic gate unit is connected with the display control module, and the display control module is connected with the display unit.
The logic gate unit may include a plurality of and circuits, the number of the and circuits is the same as the number of the output voltage collecting units, and the and circuits correspond to the output voltage collecting units one by one.
The display unit may be a liquid crystal display.
The bus voltage acquisition device further comprises an insulating shell, and the control unit, the display unit, the bus voltage acquisition unit and the plurality of output voltage acquisition units are all arranged on the insulating shell.
The utility model discloses simple structure, convenient to use, output voltage through every contact with in the circuit breaker control circuit carries out the comparison with direct current bus voltage, confirms the location fault point to shortened staff's fault handling time, reduced the time of electric wire netting high risk operation, reduced electric wire netting equipment operation risk.
Drawings
Fig. 1 is a schematic circuit diagram of the preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of the output voltage acquisition according to the preferred embodiment of the present invention.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached drawing 1, the circuit breaker control circuit fault point positioning device comprises a control unit, a display unit, a bus voltage acquisition unit for acquiring direct current bus voltage, and a plurality of output voltage acquisition units for acquiring output voltage of each contact of the circuit breaker control circuit, wherein the bus voltage acquisition unit and the plurality of output voltage acquisition units are connected with the control unit, and the control unit is connected with the display unit.
In the above technical scheme, the bus voltage acquisition unit and the output voltage acquisition unit are both in the prior known technology, and can be voltage sensors, wherein the output voltage acquisition units are multiple and respectively acquire the output voltage of each contact in the circuit breaker control circuit.
In the above technical solution, the control unit is configured to compare the output voltage of each contact with the dc bus voltage, and if the output voltage of a certain contact is not consistent with the dc bus voltage and the output voltage of the previous contact (i.e., the contact input voltage) of the contact is consistent with the dc bus voltage, determine that the contact is a suspected fault point; and after comparing the output voltages of all the contacts, determining the suspected fault point which is closest to the negative bus in all the suspected fault points as the finally positioned fault point.
In the above technical solution, the display unit may directly display the contact numbers of all suspected fault points and the contact number of the finally positioned fault point during display, or may display a complete circuit of the circuit breaker control circuit, and identify all suspected fault points with the same color, where the finally positioned fault point is identified with another color.
For example: as shown in fig. 2, a part of the circuit breaker control circuit formed by connecting a normally open contact, three normally closed contacts and a closing coil in series collects output voltages of the normally open contact and the three normally closed contacts through four output voltage collecting units respectively (namely collecting points of the four output voltage collecting units are 1 to 4 collecting points in fig. 2), and collects direct-current bus voltage through a bus voltage collecting unit; the control unit is used for comparing the output voltage of each contact with the voltage of the direct-current bus, if all suspected fault points are found out, the suspected fault points are marked as yellow on the display unit, the suspected fault points closest to the-110V bus are found out, the suspected fault points are marked as red on the display unit and are determined as finally-positioned fault points, and therefore the control unit gives prompt to workers.
To sum up the utility model discloses simple structure, convenient to use, through carrying out the comparison with the output voltage of every contact in the circuit breaker control circuit and direct current bus voltage, confirm the location fault point to shorten staff's fault handling time, reduced the time of the high risk operation of electric wire netting, reduced electric wire netting equipment operation risk.
The circuit breaker control circuit fault point positioning device can be further optimized or/and improved according to actual needs:
as shown in fig. 1, the control unit includes an analog quantity acquisition module, a display control module, and a logic gate unit capable of performing and operation, the analog quantity acquisition module is connected with the logic gate unit, the logic gate unit is connected with the display control module, and the display control module is connected with the display unit.
Among the above-mentioned technical scheme, analog quantity acquisition module is current well-known technique, converts analog signal into digital signal, the utility model discloses well analog quantity acquisition module uses direct current bus voltage as the benchmark value, converts the output voltage of the direct current bus voltage and the contact received. For example, if the dc bus voltage is-110V, the analog quantity acquisition module converts the dc bus voltage to output a high potential 1, and if the output voltage of the contact is-110V, the analog quantity acquisition module outputs a high potential 1, and if the output voltage of the contact is not-110V, the analog quantity acquisition module outputs a low potential 0.
In the technical scheme, the logic gate unit respectively performs AND operation on the output voltage conversion data of each contact and the direct-current bus voltage conversion data, and sends a logic operation result to the display control module.
In the above technical solution, the display control module is a prior known technology, and may be an ARM controller, and is configured to control the display unit to display a corresponding result according to a received logical operation result, where if the logical operation result is 1, the corresponding contact is not a suspected fault point, and if the logical operation result is 0, the corresponding contact is a suspected fault point.
As shown in fig. 1, the logic gate unit includes a plurality of and circuits, and the number of the and circuits is the same as the number of the output voltage acquisition units, and the and circuits are in one-to-one correspondence.
In the above technical solution, the and circuit is a conventional technology, and each and circuit performs and operation on the received output voltage conversion data of the contact with the dc bus voltage conversion data, and outputs a result.
According to the requirement, the display unit is a liquid crystal display screen.
As shown in the attached figure 1, the power supply further comprises an insulating shell, and the control unit, the display unit, the bus voltage acquisition unit and the plurality of output voltage acquisition units are all arranged on the insulating shell.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (6)
1. The utility model provides a circuit breaker control circuit fault point positioner, its characterized in that includes the control unit, display element, gathers direct current bus voltage's busbar voltage acquisition unit, gathers a plurality of output voltage acquisition units of each contact output voltage of circuit breaker control circuit, busbar voltage acquisition unit and a plurality of output voltage acquisition unit all are connected with the control unit, and the control unit is connected with the display element.
2. The apparatus as claimed in claim 1, wherein the control unit comprises an analog acquisition module, a display control module, and a logic gate unit capable of performing AND operation, the analog acquisition module is connected to the logic gate unit, the logic gate unit is connected to the display control module, and the display control module is connected to the display unit.
3. The apparatus as claimed in claim 2, wherein the logic gate unit comprises a plurality of AND circuits, the number of AND circuits is the same as the number of output voltage collecting units, and the AND circuits are in one-to-one correspondence.
4. The apparatus as claimed in claim 1, 2 or 3, wherein the display unit is a liquid crystal display.
5. The apparatus as claimed in claim 1, 2 or 3, further comprising an insulating housing, wherein the control unit, the display unit, the bus voltage collecting unit, and the plurality of output voltage collecting units are disposed on the insulating housing.
6. The apparatus as claimed in claim 4, further comprising an insulating housing, wherein the control unit, the display unit, the bus voltage collecting unit, and the plurality of output voltage collecting units are disposed on the insulating housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022238122.8U CN213813868U (en) | 2020-10-10 | 2020-10-10 | Circuit breaker control circuit fault point positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022238122.8U CN213813868U (en) | 2020-10-10 | 2020-10-10 | Circuit breaker control circuit fault point positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213813868U true CN213813868U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022238122.8U Active CN213813868U (en) | 2020-10-10 | 2020-10-10 | Circuit breaker control circuit fault point positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213813868U (en) |
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2020
- 2020-10-10 CN CN202022238122.8U patent/CN213813868U/en active Active
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