CN210640686U - A prevent mistake trigger device for circuit breaker - Google Patents
A prevent mistake trigger device for circuit breaker Download PDFInfo
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- CN210640686U CN210640686U CN201921744534.XU CN201921744534U CN210640686U CN 210640686 U CN210640686 U CN 210640686U CN 201921744534 U CN201921744534 U CN 201921744534U CN 210640686 U CN210640686 U CN 210640686U
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Abstract
The utility model relates to a technical field of high-voltage device discloses a prevent mistake trigger device for circuit breaker, including the system power, the system power passes through voltage monitoring module and links to each other with on-off control module, links to each other with the treater through voltage conversion module, the treater passes through state monitoring module and links to each other with on-off control module, on-off control module links to each other with drive module's power part, the treater links to each other with drive module's control part, drive module links to each other with the mechanical structure of circuit breaker for drive mechanical structure carries out divide-shut brake action, whether voltage that voltage monitoring module is used for the monitoring system power is less than threshold voltage, state monitoring module is used for monitoring the treater and is in the crash state. The utility model discloses simple structure, convenient operation does benefit to popularization and application.
Description
Technical Field
The utility model relates to a technical field of high-voltage device especially relates to a prevent mistake trigger device for circuit breaker.
Background
The flexible direct current transmission is a novel transmission technology based on a voltage source converter, a self-switching device and Pulse Width Modulation (PWM), has the advantages of supplying power to a passive network, having no commutation fault, having no communication between commutation stations, being easy to construct a multi-terminal direct current system and the like, and has strong technical advantages when being applied to aspects of island power supply, capacity increasing transformation of urban power distribution networks and the like.
The high-voltage flexible direct current transmission system realizes the mutual conversion of direct current and alternating current through a converter station. The high-voltage direct-current circuit breaker is one of main electrical equipment of the converter station, can cut off and connect a high-voltage line and various no-load and load currents when a system normally operates, and can automatically, quickly and reliably cut off various overload and short-circuit currents under the action of a relay protection device when the system fails, so that the accident range is prevented from being enlarged.
The high-voltage direct-current circuit breaker is a product integrating primary and secondary deep, the circuit breaker also has very reliable misoperation prevention capability, except for a control command issued by superior protection, the circuit breaker cannot have the behaviors of false triggering and misoperation under any working condition, and the circuit breaker has very critical and important requirements on the reliability of the circuit breaker. In the circuit design of a complex secondary control system of a direct current breaker, how to ensure the false triggering prevention capability of the whole control system is very important.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prevent mistake trigger device for circuit breaker has improved whole control system's prevent mistake trigger ability, ensures the reliability of circuit breaker self.
The utility model discloses can realize through following technical scheme:
the utility model provides a prevent mistake trigger device for circuit breaker, includes the system power, the system power passes through voltage monitoring module and links to each other with on-off control module, links to each other with the treater through voltage conversion module, the treater passes through state monitoring module and links to each other with on-off control module, on-off control module links to each other with drive module's power part, the treater links to each other with drive module's control part, drive module links to each other with the mechanical structure of circuit breaker for drive mechanical structure carries out the divide-shut brake action, whether voltage monitoring module is used for monitoring system power's voltage is less than threshold voltage, state monitoring module is used for monitoring whether the treater is in the crash state.
Further, the state monitoring module comprises a monostable trigger connected with one IO port of the processor, the monostable trigger is connected with the switch control module, and a register corresponding to the IO port is used for storing an indicated value after each task in the processor is executed.
Further, the voltage monitoring module comprises a comparator, wherein the positive end of the comparator is connected with a system power supply, the reverse end of the comparator is connected with a reference power supply for generating threshold voltage, and the output end of the comparator is connected with the switch control module.
Further, the switch control module is constructed by adopting a field effect transistor.
The utility model discloses profitable technological effect as follows:
whether the voltage of a system power supply is lower than a threshold voltage is monitored through a voltage monitoring module, whether a processor is in a halt state is monitored through a state monitoring module, if the voltage is lower than the threshold voltage or in the halt state, a locking signal is generated, a switch control module receives the locking signal and cuts off a power supply part of a driving module, otherwise, a conducting signal is generated, a switch control module receives the conducting signal and supplies power to the driving module through a system power supply, so that the opening and closing operation of a circuit breaker is controlled, the false triggering which is possibly generated on the circuit breaker in the power-on and power-off processes of a system and the working process of the processor is reduced, the false triggering prevention capability of the whole control system is improved, the reliability of a direct current circuit breaker is improved, the false triggering prevention capability of the whole control system under various working conditions and interference environments is ensured, in addition, the, is beneficial to popularization and application.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a prevent mistake trigger device for circuit breaker, including the system power, this system power passes through voltage monitoring module and links to each other with on-off control module, link to each other with the treater through voltage conversion module, this treater passes through state monitoring module and links to each other with on-off control module, this on-off control module links to each other with drive module's power part, this treater links to each other with drive module's control part, this drive module links to each other with the mechanical structure of circuit breaker, a mechanical structure carries out the divide-shut brake action for driving, whether this voltage monitoring module is used for the voltage of monitoring system power to be less than threshold voltage, this state monitoring module is used for monitoring the treater whether to be in the crash state. Therefore, voltage fluctuation of a system power supply, particularly voltage change in the power-on and power-off process, is monitored through the voltage monitoring module, the working state of the processor is monitored through the state detection module, particularly the dead halt state, when the voltage of the system power supply is lower than threshold voltage or the processor is in the dead halt state, a locking signal can be generated to the switch control module, the switch control module cuts off power supply of the system power supply to the driving module, and therefore the phenomenon that the processor is suddenly dead halted or false triggering possibly caused to the circuit breaker in the power-on and power-off process of the system is reduced.
The state monitoring module comprises a monostable trigger connected with one IO port of the processor, the monostable trigger is connected with the switch control module, and a register corresponding to the IO port is used for storing an indicated value after each task in the processor is executed. Therefore, after each task is executed, an indication value is written into the register, which indicates that the task is executed, the output of the corresponding IO port will be inverted, and when a certain task is not executed or executed but not completed, no indication value is written, the output of the corresponding IO port will not be inverted, so that the monostable flip-flop connected with the monostable flip-flop is changed from the monostable state to the steady state, and the monostable flip-flop is used as a locking signal, and the switch control module cuts off the power supply of the system power supply to the driving module.
The voltage monitoring module comprises a comparator, wherein the positive end of the comparator is connected with a system power supply, the reverse end of the comparator is connected with a reference power supply for generating threshold voltage, and the output end of the comparator is connected with the switch control module. Generally, a power supply required by a hardware control circuit of the circuit breaker is 15 volts, that is, the voltage of a system power supply is 15 volts, and when the voltage of the system power supply is more than 10 volts, the hardware circuit is in a relatively stable working state, so that the threshold voltage is set to be 10 volts, and thus, when the voltage of the system power supply is lower than 10 volts, the output of the comparator is inverted, the change is used as a locking signal, and the switch control module cuts off the power supply of the system power supply to the driving module.
The switch control module can be constructed by adopting a field effect transistor, and other similar switch control circuits are applicable. The voltage conversion module adopts DC/DC power conversion to convert the voltage of a 15V system power supply into the working voltage required by the processor.
The working process of the utility model is as follows:
in the power-on and power-off process of the system, the voltage monitoring module monitors the voltage of the system power supply, when the voltage is lower than the threshold voltage, the output of the comparator changes, the output is used as a locking signal and sent to the switch control module, and the power supply of the system power supply to the driving module is cut off; in the working process of the processor, the working state, particularly the halt state, of the processor is monitored by the state monitoring module, when a crash occurs, it indicates that a certain task in the processor is not executed or is finished executing, the register for storing the indication value has no value written, then the input of the corresponding IO port has not been flipped, so that the output of the monostable trigger connected with the switch is changed from a steady state to a transient steady state, and the output is used as a locking signal and sent to the switch control module, and the switch control module cuts off the power supply of the system power supply to the driving module, therefore, false triggering which may be generated on the circuit breaker in the power-on and power-off processes of the system and the working process of the processor is reduced, the false triggering prevention capability of the whole control system is improved, the reliability of the direct current circuit breaker is improved, and the false triggering prevention capability of the whole control system under various working conditions and interference environments is ensured. In addition, the whole device is simple in structure, convenient to operate and beneficial to popularization and application.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made therein without departing from the principles and spirit of the invention, and therefore, the scope of the invention is defined by the appended claims.
Claims (4)
1. The utility model provides a prevent mistake trigger device for circuit breaker which characterized in that: the system power supply is connected with the switch control module through the voltage monitoring module and is connected with the processor through the voltage conversion module, the processor is connected with the switch control module through the state monitoring module, the switch control module is connected with the power supply part of the driving module, the processor is connected with the control part of the driving module, the driving module is connected with the mechanical structure of the circuit breaker and is used for driving the mechanical structure to execute the opening and closing actions, the voltage monitoring module is used for monitoring whether the voltage of the system power supply is lower than a threshold voltage, and the state monitoring module is used for monitoring whether the processor is in a dead halt state.
2. The false triggering prevention device for a circuit breaker according to claim 1, characterized in that: the state monitoring module comprises a monostable trigger connected with one IO port of the processor, the monostable trigger is connected with the switch control module, and a register corresponding to the IO port is used for storing an indicated value after each task in the processor is executed.
3. The false triggering prevention device for a circuit breaker according to claim 1, characterized in that: the voltage monitoring module comprises a comparator, wherein the positive end of the comparator is connected with a system power supply, the reverse end of the comparator is connected with a reference power supply for generating threshold voltage, and the output end of the comparator is connected with the switch control module.
4. The false triggering prevention device for a circuit breaker according to claim 2, characterized in that: the switch control module is constructed by adopting a field effect tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744534.XU CN210640686U (en) | 2019-10-17 | 2019-10-17 | A prevent mistake trigger device for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744534.XU CN210640686U (en) | 2019-10-17 | 2019-10-17 | A prevent mistake trigger device for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210640686U true CN210640686U (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921744534.XU Active CN210640686U (en) | 2019-10-17 | 2019-10-17 | A prevent mistake trigger device for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210640686U (en) |
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2019
- 2019-10-17 CN CN201921744534.XU patent/CN210640686U/en active Active
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