CN101325327B - Intelligent load-limiting breaker with auto-reclosing - Google Patents
Intelligent load-limiting breaker with auto-reclosing Download PDFInfo
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- CN101325327B CN101325327B CN 200810029066 CN200810029066A CN101325327B CN 101325327 B CN101325327 B CN 101325327B CN 200810029066 CN200810029066 CN 200810029066 CN 200810029066 A CN200810029066 A CN 200810029066A CN 101325327 B CN101325327 B CN 101325327B
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Abstract
The invention discloses an intelligent load-limiting breaker comprising a breaker control unit and a release, wherein the control unit comprises a three-phase current sampling module and a central processor; the output end of the central processor is further connected with an automatic recloser actuating mechanism; when the three-phase current sampling module detects that the current value of the leading-out terminal of the breaker exceeds the load-limiting gate value, the release works, the breaker is switched off, the central processor runs the recloser program, then time delay recloser is carried out by the automatic recloser actuating mechanism, and the overloading power consumption of a user can be limited. After multiple reclosers, the overloading condition can be detected, thus the central processing unit refuses to carry out the recloser program and access into the thermal memory state, and the breaker can not be closed. The invention can give a chance to the user for self-check, and further solving the contradiction problem between a power supply department and the user in the process that the power supply department cooperates with the user for resuming power supply after the breaker is overloaded and tripped.
Description
Technical field
The present invention relates to a kind of circuit breaker, particularly a kind of Intelligent load limiting breaker with automatic reclosing.
Background technology
The patent No. that has the applicant is ZL2006200674645; name is called in the open file of utility model patent of " limit for tonnage circuit breaker "; a kind of scheme that power supply department limit for tonnage power supply station needs that solves is provided, and this circuit breaker can be protected electric power system effectively, uses reliable.
Through use more than a year, above-mentioned circuit breaker after circuit breaker is transfiniting tripping operation, must cooperate the user to restore electricity to on-the-spot by power supply department in use, and it is not very convenient using.The power supply department chance that the electric consumer checks oneself of wishing to overload has solved again between power supply department and the user after circuit breaker transfinites tripping operation the contradictory problems that power supply department restores electricity to on-the-spot cooperation user.
Summary of the invention
In order to overcome the prior art problem, the object of the present invention is to provide a kind of use reliable, convenient, can carry out the Intelligent load limiting breaker of automatic reclosing.
The technical solution adopted in the present invention is:
Intelligent load limiting breaker with automatic reclosing, comprise circuit breaker control unit and release, include three-phase current sampling module and central processing unit in the control unit, the three-phase current sampling module is for detection of the current signal on the breaker outgoing line end, and signal delivered to central processing unit, differentiate by central processing unit whether electric current reaches limit for tonnage door value, when transfiniting, the work of central processing unit control release, breaker open operation, it is characterized in that: this limit for tonnage door value is set between 1.05 times to the 1.2 times rated current, the output of central processing unit also is connected with the automatic reclosing actuating mechanism, when exceeding limit for tonnage door value, the current value that detects the leading-out terminal of circuit breaker at the three-phase current sampling module when release works, breaker open operation, central processing unit is carried out the reclosing program at this moment, by the automatic reclosing actuating mechanism reclosing of delaying time, limited subscriber overload electricity consumption, behind reclosing repeatedly, still detect in the situation of overload, the central processing unit refusal is carried out the reclosing program, enter hot remember condition, circuit breaker can not close a floodgate.
In addition, as preferred version, described control unit also comprises the three-phase voltage sampling module, delivers to optocoupler by the three-phase separate depressor that is loaded in the control unit, and delivers to central processing unit through analog-to-digital conversion, differentiates overvoltage, under-voltage, phase shortage.
Further, described control unit also comprises the residual current sampling module: provided by zero sequence current mutual inductor and deliver to control unit, and deliver to central processing unit through analog-to-digital conversion and carry out analyzing and processing.
Further, described control unit comprises the input setting module, is used for on-the-spot setup parameter.
Further, described control unit comprises display unit, is used for showing various current parameters or shows running status and fault category.
Further, described control unit comprises communication module, is used for information is delivered to host computer, and can receives the host computer instruction.
Further, described control unit comprises the telephony feature module: built-in warning message and telephone number, after circuit breaker can not be carried out reclosing, pass through audio alert.
Wherein, described automatic reclosing actuating mechanism is multiple switching relay.
The invention has the beneficial effects as follows: owing in the limit for tonnage circuit breaker, be provided with the automatic reclosing actuating mechanism, when the user is transfinited use, carry out first breaker open operation, control by central processing unit makes automatic reclosing actuating mechanism delayed automatic reclosing, the chance that the electric consumer of overloading checks oneself, solved again between power supply department and the user after circuit breaker transfinites tripping operation the contradictory problems that power supply department restores electricity to on-the-spot cooperation user.Further, when testing electric current and fault current, have the multinomial defencive functions such as overvoltage, under voltage, short circuit, phase shortage, electric leakage online; The storage of fault self-diagnosis and fault history and communication session function etc.
Description of drawings
The present invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the structural representation of the specific embodiment of the invention.
Embodiment
With reference to Fig. 1, Fig. 2, the specific embodiment of the present invention, a kind of Intelligent load limiting breaker with automatic reclosing, comprise circuit breaker control unit and release, include three-phase current sampling module and central processing unit in the control unit, the output of central processing unit also is connected with the automatic reclosing actuating mechanism.
Further, described control unit can also include three-phase voltage sampling module, residual current sampling module, input setting module, display unit, communication module and telephony feature module.
Wherein, the three-phase current sampling module provides current signal to deliver to control unit by three current sensors that are loaded on the breaker outgoing line end, and delivers to central processing unit through analog-to-digital conversion, differentiates whether electric current reaches limit for tonnage door value, overload or short circuit;
Central processing unit, central processing unit are 16 bit CPUs, the various signals of sending into central processing unit are carried out analyzing and processing, and export through digital-to-analogue conversion;
The automatic reclosing actuating mechanism is multiple switching relay, and central processing unit sends instruction after determining breaker open operation, to multiple switching relay, make operating electrical machines work, allows breaker closing;
The three-phase current sampling module provides current signal to deliver to control unit by three current sensors that are loaded on the breaker outgoing line end, and delivers to central processing unit through analog-to-digital conversion, differentiates whether electric current reaches limit for tonnage door value, overload or short circuit;
The three-phase voltage sampling module is delivered to optocoupler by the three-phase separate depressor that is loaded in the control unit, and is delivered to central processing unit through analog-to-digital conversion, differentiates overvoltage, under-voltage, phase shortage;
The residual current sampling module is provided by zero sequence current mutual inductor and to deliver to control unit, and delivers to central processing unit through analog-to-digital conversion and carry out analyzing and processing;
The input setting module is an input keyboard;
Display unit comprises a LCDs and shows luminous tube that display screen shows online current current parameters, and the fault current parameter shows that luminous tube shows running status and fault category;
Communication module adopts the RS485 interface, and information is delivered to host computer, also can receive the host computer instruction, realizes bidirectional dialog and " four is distant ";
And the telephony feature module, built-in warning message and telephone number after circuit breaker can not be carried out reclosing, pass through audio alert.
Circuit breaker in this embodiment is when work, to load current limit in 1.05 times to 1.2 times rated current (but field adjustable setting), when data that sampling module (three current sensors) is sampled show normal current current value through central processing unit analysis comparison less than the LCDs that sets in limit for tonnage door value (i.e. 1.05 section's to 1.2 times rated current) the output Executive Module, and luminous tube shows " normally ", and tripping coil is not worked.When the current value that gathers through central processing unit analysis comparison greater than the limit for tonnage door value that sets, LCDs indication fault current value in the output Executive Module, luminous tube prompting " limit for tonnage " fault, trip coil work makes the breaker open operation open circuit, after confirming the circuit breaker separating brake first time, central processing unit is carried out the reclosing program, after time-delay in 5 minutes, multiple switching relay makes operating motor work, drives circuit breaker and finishes for the first time reclosing.The combined floodgate after-current continues sampling, the current data of adopting, through the central processing unit analysis still greater than the limit for tonnage door value of setting, trip coil task more then, make for the second time separating brake of circuit breaker, central processing unit starts the reclosing program for the second time after confirming breaker open operation, multiple switching relay makes operating motor work for the second time after time-delay in 7 minutes, drives for the second time reclosing of circuit breaker.When electric current continues sampling, takes current data after central processing unit analysis relatively for the third time, as confirming still greater than limit for tonnage door value, then trip coil is worked for the third time, make for the third time separating brake of circuit breaker, central processing unit is as confirming that circuit breaker is for the third time behind the separating brake, start for the third time the reclosing program, through delaying time 10 minutes by multiple switching relay, make operating motor work, drive circuit breaker and finish for the third time reclosing.The current data of taking for the 4th time such as the current sample module is after central processing unit analysis relatively, still greater than limit for tonnage door value, even trip coil the 4th task makes breaker open operation.Finish the limit for tonnage control program.After this, the central processing unit refusal is carried out the reclosing program, enters hot remember condition.Circuit breaker can not close a floodgate (approximately after 30 minutes, the heat memory disappears, and circuit breaker can close a floodgate).This moment, central processing unit started the telephone call program, sent warning message to built-in telephone number.
On the basis of invention at automatic reclosing, can be further implemented in the line parameter detecting, multi-protective function, fault self-diagnosis, and the two-way communication dialogue function of host computer.
The present invention and deficiency are limited to above-mentioned execution mode, as long as it reaches the implementation result of present technique with essentially identical means, all should belong to the protection range that present technique requires.
Claims (5)
1. with the Intelligent load limiting breaker of automatic reclosing, comprise circuit breaker control unit and release, include three-phase current sampling module and central processing unit in the control unit, the three-phase current sampling module is for detection of the current signal on the breaker outgoing line end, and signal delivered to central processing unit, differentiate by central processing unit whether electric current reaches limit for tonnage door value, when transfiniting, the work of central processing unit control release, breaker open operation, it is characterized in that: this limit for tonnage door value is set between 1.05 times to the 1.2 times rated current, the output of central processing unit also is connected with the automatic reclosing actuating mechanism, when exceeding limit for tonnage door value, the current value that detects the leading-out terminal of circuit breaker at the three-phase current sampling module when release works, breaker open operation, central processing unit is carried out the reclosing program at this moment, carry out delayed automatic reclosing by the automatic reclosing actuating mechanism, limited subscriber overload electricity consumption, behind reclosing repeatedly, still detect in the situation of overload, the central processing unit refusal is carried out the reclosing program, enter hot remember condition, circuit breaker can not close a floodgate, described control unit also comprises the three-phase voltage sampling module, deliver to optocoupler by the three-phase separate depressor that is loaded in the control unit, and deliver to central processing unit through analog-to-digital conversion, differentiate overvoltage, under-voltage, phase shortage, described control unit also comprises the residual current sampling module: provided by zero sequence current mutual inductor and deliver to control unit, and deliver to central processing unit through analog-to-digital conversion and carry out analyzing and processing, described control unit comprises the input setting module, is used for on-the-spot setup parameter.
2. the Intelligent load limiting breaker with automatic reclosing according to claim 1, it is characterized in that: described control unit comprises display unit, is used for showing various current parameters or shows running status and fault category.
3. the Intelligent load limiting breaker with automatic reclosing according to claim 1, it is characterized in that: described control unit comprises communication module, is used for information is delivered to host computer, and can receives the host computer instruction.
4. the Intelligent load limiting breaker with automatic reclosing according to claim 1, it is characterized in that: described control unit comprises the telephony feature module: built-in warning message and telephone number, after circuit breaker can not be carried out reclosing, pass through audio alert.
5. the Intelligent load limiting breaker with automatic reclosing according to claim 1, it is characterized in that: described automatic reclosing actuating mechanism is multiple switching relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810029066 CN101325327B (en) | 2008-06-27 | 2008-06-27 | Intelligent load-limiting breaker with auto-reclosing |
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| CN 200810029066 CN101325327B (en) | 2008-06-27 | 2008-06-27 | Intelligent load-limiting breaker with auto-reclosing |
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| CN101325327A CN101325327A (en) | 2008-12-17 |
| CN101325327B true CN101325327B (en) | 2013-02-13 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105446151A (en) * | 2015-12-10 | 2016-03-30 | 陈银奇 | Intelligent household control system |
| CN106132050A (en) * | 2016-08-31 | 2016-11-16 | 浙江德菱科技股份有限公司 | Intelligent road-lamp with residual current protecting controls chopper |
| CN108347038A (en) * | 2017-01-24 | 2018-07-31 | 天津市中力神盾电子科技有限公司 | A kind of power-off protection method and system |
| CN107946102B (en) * | 2017-12-21 | 2020-09-18 | 浙江正泰机电电气有限公司 | Reclosing load switch |
| CN110021503A (en) * | 2019-01-04 | 2019-07-16 | 兰溪市雁洲智能科技有限公司 | A kind of Internet of Things intelligent switch remotely controlled |
| CN110896208B (en) * | 2019-11-29 | 2022-04-08 | 广东欧文特电气有限公司 | Intelligent load-limiting universal circuit breaker |
| CN111381156B (en) * | 2020-03-27 | 2022-07-05 | 嘉捷鑫源(北京)科技有限公司 | Distribution room circuit breaker load energy consumption abnormity monitoring method, device, equipment and readable storage medium |
| CN112436478B (en) * | 2020-11-12 | 2024-07-05 | 贵州电网有限责任公司 | Automatic reclosing method based on SPSR distribution line and channel-free protection cooperation |
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