CN112750661A - High-voltage relay and protection method thereof - Google Patents
High-voltage relay and protection method thereof Download PDFInfo
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- CN112750661A CN112750661A CN202011593787.9A CN202011593787A CN112750661A CN 112750661 A CN112750661 A CN 112750661A CN 202011593787 A CN202011593787 A CN 202011593787A CN 112750661 A CN112750661 A CN 112750661A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000013500 data storage Methods 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000007405 data analysis Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/08—Indicators; Distinguishing marks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/12—Ventilating; Cooling; Heating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a high-voltage relay and a protection method thereof, and the high-voltage relay comprises a relay, a current-voltage sensor, a temperature sensor, a radiating fin, a radiating fan and a buzzer alarm, wherein the current-voltage sensor is sleeved and assembled on a pin at one end of the relay, the radiating fin is installed at the top of the relay through a bolt, the radiating fan is installed at the top of the radiating fin through a bolt, the temperature sensor is installed at the top of the relay through a bolt, the detection end of the temperature sensor is distributed on the inner wall of a relay shell, a control box is installed at the bottom of the relay through a bolt, a PC board is assembled in the control box, and a single chip microcomputer, a wireless transmission module, a data storage module and a power. The armature iron and the small iron of the structure are symmetrical in shape, so that the vibration resistance and the shock resistance of the relay are improved.
Description
Technical Field
The invention belongs to the technical field of relays, and particularly relates to a high-voltage relay and a protection method thereof.
Background
The service life of the existing relay main contact is evaluated by adopting the impedance of the relay main contact, when the impedance of the relay main contact is larger than a certain value, the service life of the relay main contact is considered to be terminated, but the impedance is abnormally increased due to the abnormal condition of the relay main contact, the service life of the relay main contact is evaluated by the scheme, the wrong judgment is easily caused, and the relay sends wrong information.
Disclosure of Invention
The present invention is directed to a high voltage relay and a protection method thereof, so as to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high-voltage relay and protection method thereof, includes relay, current-voltage sensor, temperature sensor, radiating fin, radiator fan and buzzer siren, cup joint on the pin of relay one end and be equipped with current-voltage sensor, radiating fin is installed through the bolt in the relay top, the radiating fin top is inlayed through the bolt and is installed radiator fan, temperature sensor is installed through the bolt in the relay top, temperature sensor's detection end is laid in relay shells inner wall, the relay bottom is installed the control box through the bolt, be equipped with the PC board in the control box, singlechip, wireless transmission module, data storage module and power module have been laid in proper order to the assembly on the PC board.
A protection method of a high-voltage relay specifically comprises the following steps:
the method comprises the following steps: the ampere-turn number of two coils of rational distribution relay realizes under the asymmetric condition of coil, guarantees that reset and self-sustaining action voltage tend to unanimity, and the coil that two ampere-turn values are different, and its implementation mode is: the coil resistance is the same, but the length of the coil, the wire diameter of the enamelled wire are different, the combination is realized, which substantially ensures that the outer diameter of the coil group is the same, the number of turns of two coils is different when winding, so that the different coordination of the ampere turns is realized, or the coil resistance is different when the length of the coil is the same, and the combination is realized by selecting different wire diameters of the enamelled wire and different numbers of turns of the wire winding;
step two: establishing a multi-thread data analysis, an asynchronous message queue and a cloud server, monitoring data sent by specified equipment by utilizing an independent process, and reading an effective data packet in the data;
step three: the working temperature of the relay is monitored on line through a temperature sensor, after the temperature of the relay is overhigh and exceeds a set value, the single chip microcomputer starts a cooling fan to perform cooling work on the surfaces of the relay and the cooling fins, reads and records the real-time temperature, and transmits signal data to a cloud server through a data storage module and a wireless transmission module;
step four: the current and voltage passing through the relay are detected in real time through a current and voltage sensor, a real-time current and voltage value is read and recorded by the single chip microcomputer, the current and voltage value is locally stored through a data storage module, signal data are transmitted to a cloud server through a wireless transmission module, and after the temperature or the current and voltage value is abnormal, the single chip microcomputer starts a buzzer alarm to buzz, so that peripheral workers can know the temperature or the current and voltage value in time, and protection prompt is realized;
step five: information and data of relay work are asynchronously exchanged by the aid of the message queue through the single chip microcomputer, original signals of the designated equipment are written into the message queue, the corresponding independent processes acquire the original signals and analyze the original signals into waveform data, the waveform data are returned to the message queue, the main control unit for power monitoring is connected with the main control unit and displayed to workers, and real-time monitoring and protection are achieved.
Furthermore, a buzzer alarm is installed on one side of the relay through a bolt.
Furthermore, the single chip microcomputer is electrically connected with the wireless transmission module through a wire, and the single chip microcomputer is electrically connected with the data storage module through a wire.
Furthermore, the output end of the power supply module is electrically connected with the input end of the single chip microcomputer through a wire.
Furthermore, the output end of the single chip microcomputer is electrically connected with the input end of the buzzer alarm through a conducting wire.
Furthermore, the output end of the single chip microcomputer is electrically connected with the input end of the cooling fan.
And further, the relay voltage difference signal and the relay loop current signal are processed to obtain the resistance of the relay main contact, whether the resistance of the relay main contact is larger than a preset resistance threshold value or not is judged, if so, an alarm signal is sent out through a buzzer alarm, and the alarm signal is transmitted to a master control center through a wireless transmission module.
Compared with the prior art, the invention has the beneficial effects that:
1. the magnetic latching relay with asymmetric counterforce can be matched with an asymmetric counterforce system by adopting two coils with different ampere-turn values; the two coils with different ampere-turn values can be realized by selecting different wire diameters of enameled wires and different winding turns to be combined; the two coils with different ampere-turn values can have the same resistance, so that the control of parameters is convenient; the coils of the structure have the same power consumption and the same heat productivity; the coils do not adopt the same resistance value, the size of the coil can be close to that of the coil, and the structure is more symmetrical. The suction counterforce matching in a counterforce-free state is facilitated; the design of the magnetic latching relay with only a normally open contact or only a normally closed contact can be conveniently realized; magnetic isolation gaskets and magnetic circuit parts with complex shapes are avoided, and the miniaturization and simplification design of the magnetic latching relay is conveniently realized; the armature iron and the small iron of the structure are symmetrical in shape, so that the vibration resistance and the shock resistance of the relay are improved.
2. Through gathering relay working data, help personnel to aassessment the surplus proportion in life-span of relay main contact, when the relay is in life-span later stage, can avoid the relay to become invalid and cause more serious consequence through in time maintaining or changing the relay, improve high-pressure security and reliability.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a high-voltage relay and a protection method thereof according to the present invention.
In the figure: 1. a relay; 2. a pin; 3. a current-voltage sensor; 4. a heat dissipating fin; 5. a heat radiation fan; 6. a temperature sensor; 7. a control box; 8. a buzzer alarm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, a high-voltage relay and protection method thereof, including relay 1, current-voltage sensor 3, temperature sensor 6, radiating fin 4, radiator fan 5 and buzzer siren 8, it is equipped with current-voltage sensor 3 to cup joint on the pin 2 of 1 one end of relay, radiating fin 4 is installed through the bolt at 1 top of relay, radiator fan 5 is installed through the bolt is inlayed to establish at the 4 top of radiating fin through the bolt, temperature sensor 6 is installed through the bolt at 1 top of relay, temperature sensor 6's detection end is laid at 1 shells inner wall of relay, control box 7 is installed through the bolt in 1 bottom of relay, be equipped with the PC board in the control box 7, singlechip, wireless transmission module, data storage module and power module have been laid to the assembly in proper order on the PC board.
A protection method of a high-voltage relay specifically comprises the following steps:
the method comprises the following steps: the ampere-turn number of 1 two coils of rational distribution relay realizes under the asymmetric condition of coil, guarantees that reset and self-sustaining action voltage tend to unanimity, and the coil that two ampere-turn values are different, and its implementation mode is: the coil resistance is the same, the coil length and the enameled wire diameter are different, combination is realized, the outer diameter of the coil group is substantially the same, and the number of turns of the two coils is different in combination during winding, so that different matching of the number of turns of ampere is realized;
step two: establishing a multi-thread data analysis, an asynchronous message queue and a cloud server, monitoring data sent by specified equipment by utilizing an independent process, and reading an effective data packet in the data;
step three: the working temperature of the relay 1 is monitored on line through the temperature sensor 6, when the temperature of the relay 1 is overhigh and exceeds a set value, the single chip microcomputer starts the cooling fan 5 to perform cooling work on the surfaces of the relay 1 and the cooling fins 4, reads and records the real-time temperature, stores the real-time temperature locally through the data storage module, and transmits signal data to the cloud server through the wireless transmission module;
step four: the current and voltage passing through the relay 1 are detected in real time through the current and voltage sensor 3, a real-time current and voltage value is read and recorded by the single chip microcomputer, the current and voltage value is locally stored through the data storage module, signal data are transmitted to the cloud server through the wireless transmission module, and after the temperature or the current and voltage value is abnormal, the single chip microcomputer starts the buzzer alarm 8 to buzz, so that surrounding workers can know the temperature or the current and voltage value in time, and protection prompt is realized;
step five: information and data of relay work are asynchronously exchanged by the aid of the message queue through the single chip microcomputer, original signals of the designated equipment are written into the message queue, the corresponding independent processes acquire the original signals and analyze the original signals into waveform data, the waveform data are returned to the message queue, the main control unit for power monitoring is connected with the main control unit and displayed to workers, and real-time monitoring and protection are achieved.
Wherein, a buzzer alarm 8 is arranged on one side of the relay 1 through a bolt.
In this embodiment, as shown in fig. 1, a buzzer alarm 8 provides a buzzer alarm for a person.
The single chip microcomputer is electrically connected with the wireless transmission module through a wire, and the single chip microcomputer is electrically connected with the data storage module through a wire.
The output end of the power supply module is electrically connected with the input end of the single chip microcomputer through a wire.
The output end of the single chip microcomputer is electrically connected with the input end of the buzzer alarm 8 through a conducting wire.
Wherein, the output end of the single chip microcomputer is electrically connected with the input end of the cooling fan 5.
The relay voltage difference signal and the relay loop current signal are processed to obtain the resistance of the relay main contact, whether the resistance of the relay main contact is larger than a preset resistance threshold value or not is judged, if the resistance of the relay main contact is larger than the preset resistance threshold value, an alarm signal is sent out through a buzzer alarm 8, and the alarm signal is transmitted to a master control center through a wireless transmission module.
Example 2
As shown in fig. 1, a high-voltage relay and protection method thereof, including relay 1, current-voltage sensor 3, temperature sensor 6, radiating fin 4, radiator fan 5 and buzzer siren 8, it is equipped with current-voltage sensor 3 to cup joint on the pin 2 of 1 one end of relay, radiating fin 4 is installed through the bolt at 1 top of relay, radiator fan 5 is installed through the bolt is inlayed to establish at the 4 top of radiating fin through the bolt, temperature sensor 6 is installed through the bolt at 1 top of relay, temperature sensor 6's detection end is laid at 1 shells inner wall of relay, control box 7 is installed through the bolt in 1 bottom of relay, be equipped with the PC board in the control box 7, singlechip, wireless transmission module, data storage module and power module have been laid to the assembly in proper order on the PC board.
A protection method of a high-voltage relay specifically comprises the following steps:
the method comprises the following steps: the ampere-turn number of 1 two coils of rational distribution relay realizes under the asymmetric condition of coil, guarantees that reset and self-sustaining action voltage tend to unanimity, and the coil that two ampere-turn values are different, and its implementation mode is: the length of the coil is the same, but the resistance of the coil is different, and the combination is realized by selecting different wire diameters of the enameled wire and different numbers of turns of the winding wire;
step two: establishing a multi-thread data analysis, an asynchronous message queue and a cloud server, monitoring data sent by specified equipment by utilizing an independent process, and reading an effective data packet in the data;
step three: the working temperature of the relay 1 is monitored on line through the temperature sensor 6, when the temperature of the relay 1 is overhigh and exceeds a set value, the single chip microcomputer starts the cooling fan 5 to perform cooling work on the surfaces of the relay 1 and the cooling fins 4, reads and records the real-time temperature, stores the real-time temperature locally through the data storage module, and transmits signal data to the cloud server through the wireless transmission module;
step four: the current and voltage passing through the relay 1 are detected in real time through the current and voltage sensor 3, a real-time current and voltage value is read and recorded by the single chip microcomputer, the current and voltage value is locally stored through the data storage module, signal data are transmitted to the cloud server through the wireless transmission module, and after the temperature or the current and voltage value is abnormal, the single chip microcomputer starts the buzzer alarm 8 to buzz, so that surrounding workers can know the temperature or the current and voltage value in time, and protection prompt is realized;
step five: information and data of relay work are asynchronously exchanged by the aid of the message queue through the single chip microcomputer, original signals of the designated equipment are written into the message queue, the corresponding independent processes acquire the original signals and analyze the original signals into waveform data, the waveform data are returned to the message queue, the main control unit for power monitoring is connected with the main control unit and displayed to workers, and real-time monitoring and protection are achieved.
Wherein, a buzzer alarm 8 is arranged on one side of the relay 1 through a bolt.
In this embodiment, as shown in fig. 1, a buzzer alarm 8 provides a buzzer alarm for a person.
The single chip microcomputer is electrically connected with the wireless transmission module through a wire, and the single chip microcomputer is electrically connected with the data storage module through a wire.
The output end of the power supply module is electrically connected with the input end of the single chip microcomputer through a wire.
The output end of the single chip microcomputer is electrically connected with the input end of the buzzer alarm 8 through a conducting wire.
Wherein, the reed materials of the high voltage-resistant relay all adopt plated bronze, and the ultimate stress is 1150 MPa.
The relay voltage difference signal and the relay loop current signal are processed to obtain the resistance of the relay main contact, whether the resistance of the relay main contact is larger than a preset resistance threshold value or not is judged, if the resistance of the relay main contact is larger than the preset resistance threshold value, an alarm signal is sent out through a buzzer alarm 8, and the alarm signal is transmitted to a master control center through a wireless transmission module.
The working principle of the invention is as follows: the magnetic latching relay with asymmetric counterforce can be matched with an asymmetric counterforce system by adopting two coils with different ampere-turn values; the two coils with different ampere-turn values can be realized by selecting different wire diameters of enameled wires and different winding turns to be combined; the two coils with different ampere-turn values can have the same resistance, so that the control of parameters is convenient; the coils of the structure have the same power consumption and the same heat productivity; the coils do not adopt the same resistance value, the size of the coil can be close to that of the coil, and the structure is more symmetrical. The suction counterforce matching in a counterforce-free state is facilitated; the design of the magnetic latching relay with only a normally open contact or only a normally closed contact can be conveniently realized; magnetic isolation gaskets and magnetic circuit parts with complex shapes are avoided, and the miniaturization and simplification design of the magnetic latching relay is conveniently realized; the armature iron and the small iron of the structure are symmetrical in shape, so that the vibration resistance and the shock resistance of the relay are improved; through gathering relay working data, help personnel to aassessment the surplus proportion in life-span of relay main contact, when the relay is in life-span later stage, can avoid the relay to become invalid and cause more serious consequence through in time maintaining or changing the relay, improve high-pressure security and reliability.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a high-voltage relay, includes relay (1), current-voltage sensor (3), temperature sensor (6), radiating fin (4), radiator fan (5) and buzzer siren (8), a serial communication port, it is equipped with current-voltage sensor (3) to cup joint on pin (2) of relay (1) one end, radiating fin (4) are installed through the bolt in relay (1) top, radiating fin (4) are installed through the bolt inlays at radiating fin (4) top and are installed radiator fan (5), temperature sensor (6) are installed through the bolt in relay (1) top, relay (1)'s the detection end is laid in relay (1) shells inner wall, control box (7) are installed through the bolt in relay (1) bottom, be equipped with the PC board in control box (7), the singlechip has been laid in proper order to assemble on the PC board, The device comprises a wireless transmission module, a data storage module and a power supply module.
2. A method of protecting a high-voltage relay according to claim 1, characterized in that: the protection method specifically comprises the following steps:
the method comprises the following steps: the ampere-turn number of two coils of rational distribution relay (1) realizes under the asymmetric condition of coil, guarantees that reset and self-sustaining action voltage tend to unanimity, and the coil that two ampere-turn values are different, and its implementation mode is: the coil resistance is the same, but the length of the coil, the wire diameter of the enamelled wire are different, the combination is realized, which substantially ensures that the outer diameter of the coil group is the same, the number of turns of two coils is different when winding, so that the different coordination of the ampere turns is realized, or the coil resistance is different when the length of the coil is the same, and the combination is realized by selecting different wire diameters of the enamelled wire and different numbers of turns of the wire winding;
step two: establishing a multi-thread data analysis, an asynchronous message queue and a cloud server, monitoring data sent by specified equipment by utilizing an independent process, and reading an effective data packet in the data;
step three: the working temperature of the relay (1) is monitored on line through a temperature sensor (6), after the temperature of the relay (1) is overhigh and exceeds a set value, the single chip microcomputer starts a cooling fan (5) to perform cooling work on the surfaces of the relay (1) and a cooling fin (4), the real-time temperature is read and recorded by the single chip microcomputer, the real-time temperature is stored locally through a data storage module, and signal data are transmitted to a cloud server through a wireless transmission module;
step four: the current and voltage passing through the relay (1) are detected in real time through the current and voltage sensor (3), a real-time current and voltage value is read and recorded by the single chip microcomputer, the current and voltage value is locally stored through the data storage module, signal data are transmitted to the cloud server through the wireless transmission module, and when the temperature or the current and voltage value is abnormal, the single chip microcomputer starts the buzzer alarm (8) to buzz, so that peripheral workers can know the temperature or the current and voltage value in time, and protection prompt is realized;
step five: information and data of relay work are asynchronously exchanged by the aid of the message queue through the single chip microcomputer, original signals of the designated equipment are written into the message queue, the corresponding independent processes acquire the original signals and analyze the original signals into waveform data, the waveform data are returned to the message queue, the main control unit for power monitoring is connected with the main control unit and displayed to workers, and real-time monitoring and protection are achieved.
3. A high voltage relay according to claim 1, wherein: and a buzzer alarm (8) is arranged on one side of the relay (1) through a bolt.
4. A high voltage relay according to claim 1, wherein: the single chip microcomputer is electrically connected with the wireless transmission module through a wire, and the single chip microcomputer is electrically connected with the data storage module through a wire.
5. A high voltage relay according to claim 1, wherein: the output end of the power supply module is electrically connected with the input end of the single chip microcomputer through a wire.
6. A high voltage relay according to claim 1, wherein: the output end of the single chip microcomputer is electrically connected with the input end of the buzzer alarm (8) through a conducting wire.
7. A high voltage relay according to claim 1, wherein: the output end of the single chip microcomputer is electrically connected with the input end of the cooling fan (5).
8. A method of protecting a high-voltage relay according to claim 2, characterized in that: the relay voltage difference signal and the relay loop current signal are processed to obtain the resistance of the relay main contact, whether the resistance of the relay main contact is larger than a preset resistance threshold value or not is judged, if the resistance of the relay main contact is larger than the threshold value, an alarm signal is sent out through a buzzer alarm (8), and the alarm signal is transmitted to a master control center through a wireless transmission module.
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| CN202011593787.9A CN112750661A (en) | 2020-12-29 | 2020-12-29 | High-voltage relay and protection method thereof |
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| CN202011593787.9A CN112750661A (en) | 2020-12-29 | 2020-12-29 | High-voltage relay and protection method thereof |
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| CN112750661A true CN112750661A (en) | 2021-05-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113644629A (en) * | 2021-07-19 | 2021-11-12 | 许继集团有限公司 | Short-circuit protection device for rail transit traction power supply bidirectional converter system and control method thereof |
| CN114825255A (en) * | 2022-03-22 | 2022-07-29 | 国网黑龙江省电力有限公司佳木斯供电公司 | Portable relay protection device based on distribution network |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047480A (en) * | 2015-08-14 | 2015-11-11 | 桂林航天电子有限公司 | Magnetic latching relay with asymmetric magnetic circuit |
| CN207947230U (en) * | 2018-03-26 | 2018-10-09 | 江西昌柘伟业航空装备技术有限公司 | A kind of intelligentized control method relay |
-
2020
- 2020-12-29 CN CN202011593787.9A patent/CN112750661A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047480A (en) * | 2015-08-14 | 2015-11-11 | 桂林航天电子有限公司 | Magnetic latching relay with asymmetric magnetic circuit |
| CN207947230U (en) * | 2018-03-26 | 2018-10-09 | 江西昌柘伟业航空装备技术有限公司 | A kind of intelligentized control method relay |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113644629A (en) * | 2021-07-19 | 2021-11-12 | 许继集团有限公司 | Short-circuit protection device for rail transit traction power supply bidirectional converter system and control method thereof |
| CN114825255A (en) * | 2022-03-22 | 2022-07-29 | 国网黑龙江省电力有限公司佳木斯供电公司 | Portable relay protection device based on distribution network |
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Application publication date: 20210504 |