CN212162800U - Arc light protection device - Google Patents
Arc light protection device Download PDFInfo
- Publication number
- CN212162800U CN212162800U CN202021212593.5U CN202021212593U CN212162800U CN 212162800 U CN212162800 U CN 212162800U CN 202021212593 U CN202021212593 U CN 202021212593U CN 212162800 U CN212162800 U CN 212162800U
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- China
- Prior art keywords
- main control
- control unit
- arc light
- output termination
- arc
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Abstract
The utility model discloses an electric arc light protection device, including the main control unit, judge the analysis unit, judge the linear main control unit of connecting of analysis unit output, its characterized in that: the main control unit output termination has the display screen, the main control unit output termination has the data communication interface, the main control unit output termination has quick tripping operation output interface, the main control unit output termination has the warning export, the main control unit output termination has the detection of overflowing, satisfies all electromagnetic compatibility (EMC) standards, accords with the requirement of china relay protection design standard, adopts and overflows and the dual criterion of arc light, and the reliability is high, and novel optical fiber connection transmits, and photoelectric conversion accomplishes in the device, and anti-electromagnetic interference ability is strong, adopts the novel arc light sensor of filtering interference light, has the function of filtering interference light, avoids visible light sensor to receive the ambient light influence to arouse the maloperation.
Description
Technical Field
The utility model relates to an electric arc light protection field, in particular to electric arc light protection device.
Background
In China, major equipment and personnel injury is mainly caused by arc light in short-circuit faults of medium-voltage buses and low-voltage buses, however, most of the medium-voltage buses and the low-voltage buses in China are not provided with rapid bus protection, and only simple arc extinction devices and transformer backup protection are adopted. The protection is low in intellectualization and low in action speed, the fault removal time is usually prolonged, the damage degree of equipment is further expanded, even a vicious accident of 'fire burning and continuous operation' can be caused, the transformer is impacted to run once, and the safe operation of the whole power grid is influenced. The power of the short-circuit arc light in the switch cabinet can reach 100MW, the energy generated by arc combustion, the combustion time of the arc and the change value of the short-circuit current are exponentially multiplied (as shown in the following figure), the high temperature and the high voltage generated by combustion can gradually destroy components, copper bars and the switch cabinet in rows, and the high-brightness arc light and the toxic gas also have great damage to human bodies.
Therefore, it is necessary to invent an arc light protection device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an arc light protection device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an arc light protection device, includes the main control unit, judges the analysis unit, judge the linear connection main control unit of analysis unit output, its characterized in that: the output end of the main control unit is connected with a display screen, the output end of the main control unit is connected with a data communication interface, the output end of the main control unit is connected with a quick tripping output interface, the output end of the main control unit is connected with an alarm outlet, and the output end of the main control unit is connected with overcurrent detection.
Preferably, the analysis unit output has connect temperature sensor, the temperature sensor output linear connection temperature probe, the analysis unit output has connect the arc light acquisition unit, the arc light acquisition unit output has connect the arc light signal and detects the interface, arc light signal detects the interface output and has connect the arc light sensor, the arc light probe is connected to the arc light sensor output linear connection.
Preferably, the arc protection is grouped on the basis of current units, the arc probe can be set and associated to any group of current signals, when the arc units transmit light signals from the arc sensors to the main control unit, and simultaneously the current starting element acts, and the arc light protection acts; the device can select the arc signal action single criterion as action logic judgment.
The utility model discloses a technological effect and advantage:
the utility model discloses satisfy all electromagnetic compatibility (EMC) standards, accord with the requirement of china relay protection design standard, adopt and overflow and the dual criterion of arc light, the reliability is high, novel optical fiber connection transmission, photoelectric conversion accomplishes in the device, anti-electromagnetic interference ability is strong, adopt the novel arc light sensor of filtering interference light, the function of filtering interference light has, it arouses the maloperation to avoid visible light sensor to receive the ambient light influence, export trip time is less than 10ms, be far away faster than traditional bus protection, total excision time can be controlled within 75ms to the inside arc light trouble of cubical switchboard, chinese character display entirely, operation custom and traditional digital protection are identical, trip outlet logic is programmable.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a schematic structural diagram of the arc light protection system of the present invention.
Fig. 3 is a logic diagram of arc light protection according to the present invention.
Fig. 4 is a schematic diagram of the single bus power supply structure of the present invention.
Fig. 5 is a schematic diagram of the bus-bar segmented power supply structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides an electric arc light protection device as shown in the figure, including main control unit 1, judge analysis unit 7 output linear connection main control unit 1, its characterized in that: the output termination of main control unit 1 has display screen 2, main control unit 1 output termination has data communication interface 3, main control unit 1 output termination has fast tripping operation output interface 4, main control unit 1 output termination has warning export 5, main control unit 1 output termination has overcurrent detection 6.
Further, in the above technical solution, the output end of the analysis unit 7 is connected to a temperature sensor 10, the output end of the temperature sensor 10 is linearly connected to a temperature probe 11, the output end of the analysis unit 7 is connected to an arc collection unit 12, the output end of the arc collection unit 12 is connected to an arc signal detection interface 13, the output end of the arc signal detection interface 13 is connected to an arc sensor 14, and the output end of the arc sensor 14 is linearly connected to an arc probe 15.
Example one
The scheme shown in fig. 4 configures a master control unit and an arc collection unit(s) (determined based on monitoring points). When faults occur on the bus, the DF1 and the DF2 breakers are jumped, the DF1 and the DF2 breakers are out of order, and the DF3 and the DF4 are jumped.
Example two
This scheme configures two main units and one (or more) arc collection unit(s) as shown in fig. 5. When a fault occurs on the bus, tripping DF1 and DF2 circuit breakers respectively, and locking (or tripping) a bus tie switch K1; DF1, DF2 circuit breaker failure, DF3 and QF4 tripping.
This practical theory of operation:
referring to the attached drawings of the specification, the system generates no arc light, three phases are balanced, and the current detected by the sensor is zero. The arc light sensor and the current sensor are connected with the signal transmission unit through a transmission line (the transmission line adopts three layers of optical cables to shield an interference line, so that the interference of external factors such as environment, medium, harmonic wave and the like is avoided). The main control unit 1 judges that the system is normal and the device has no command to send out; when the current sensor detects abnormal current and the arc light sensor detects arc light signals (single false arc light phenomenon caused by external interference is avoided), the data are transmitted to the transmission unit through the transmission line, the main control unit obtains the data, an arc light conclusion is obtained, a tripping command is sent out, the tripping output interface outputs corresponding tripping outlet tripping, and a power supply is disconnected; the main control unit adopts an ultrahigh operation unit, the total time of analyzing data, obtaining a conclusion and sending a command is not more than 20ms, a high-sensitivity tripping relay is adopted at a tripping outlet, the action time is not more than 10ms, an optical cable is adopted as a data transmission line, the total time of detecting and outputting optical signals is not more than 15ms, and the total time from arc light generation of the whole system to power off is not more than 75 ms. Use the utility model discloses time arc light protection uses the electric current unit to divide into groups as the basis, and the arc light probe can be set and be related to on arbitrary a set of current signal. When the arc unit transmits the optical signal from the arc sensor to the main control unit, and simultaneously, the current starting element acts, and the arc light is protected; the device can select an arc signal action single criterion as action logic judgment, and when the device detects the hardware fault, an alarm signal is sent out, and the whole set of protection is locked. Hardware failures include: sampling loop faults, RAM errors, fixed value errors, etc.
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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (2)
1. The utility model provides an arc light protection device, includes main control unit (1) and judges analysis unit (7), judge analysis unit (7) output linear connection main control unit (1), its characterized in that: the main control unit (1) output termination has display screen (2), main control unit (1) output termination has data communication interface (3), main control unit (1) output termination has fast tripping operation output interface (4), main control unit (1) output termination has warning export (5), main control unit (1) output termination has overcurrent detection (6).
2. An arc light protection device according to claim 1, wherein: the output end of the analysis unit (7) is connected with a temperature sensor (10), the output end of the temperature sensor (10) is linearly connected with a temperature probe (11), the output end of the analysis unit (7) is connected with an arc light acquisition unit (12), the output end of the arc light acquisition unit (12) is connected with an arc light signal detection interface (13), the output end of the arc light signal detection interface (13) is connected with an arc light sensor (14), and the output end of the arc light sensor (14) is linearly connected with an arc light probe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021212593.5U CN212162800U (en) | 2020-06-28 | 2020-06-28 | Arc light protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021212593.5U CN212162800U (en) | 2020-06-28 | 2020-06-28 | Arc light protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212162800U true CN212162800U (en) | 2020-12-15 |
Family
ID=73699682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021212593.5U Expired - Fee Related CN212162800U (en) | 2020-06-28 | 2020-06-28 | Arc light protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212162800U (en) |
-
2020
- 2020-06-28 CN CN202021212593.5U patent/CN212162800U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201215 Termination date: 20210628 |