CN102427003A - Intelligent tripping device working method - Google Patents
Intelligent tripping device working method Download PDFInfo
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- CN102427003A CN102427003A CN2011102774431A CN201110277443A CN102427003A CN 102427003 A CN102427003 A CN 102427003A CN 2011102774431 A CN2011102774431 A CN 2011102774431A CN 201110277443 A CN201110277443 A CN 201110277443A CN 102427003 A CN102427003 A CN 102427003A
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Abstract
In the intelligent tripping device working method of the invention, rapidly saturable mutual inductors which are arranged on three phases respectively and are parallely connected provide power for each component. Secondary sides of three hollow mutual inductors are taken as current sampling and programmable amplification. Multipath analog switches are input. A transformer carries out voltage sampling, amplification, filtering and inputting multipath analog switches. When a line generates various kinds of faults and if the faults reach or exceed a keyboard or encoder setting value, inputting of the multipath switches is controlled through strobing and then it is output to a CPU. After operation, the CPU sends to a driving circuit and inputs to a magnetic flux converter. During a normal condition of an armature, attracting by a constant magnetic flux generated by a permanent magnet on an iron core, a magnetic flux polarity generated by a direct current output by the driving circuit is opposite to the magnetic flux of the permanent magnet. Suction of the iron core to the armature can be offset and the armature is released. A catch bar detaches a lock catch on a fourbar linkage of a breaker. The breaker is tripped out and the circuit is cut off. Sensitivity is high and a protection working scope is large.
Description
Technical field
The present invention relates to a kind of method of work of intelligent release.
Background technology
Carrying, distribute, using in the electric energy, circuit breaker is the most basic protection switch electric elements, occupies extremely important position, and range of application has very extensively almost replaced fuse in industrial, civilian and architectural electric field comprehensively.Circuit breaker mainly contains two big functions: the one, starting, stop the switching function of power consumption equipment, and the 2nd, the defencive function that transships at circuit or power consumption equipment, cuts off the electricity supply automatically during short trouble.Defencive function is the very important function of use of circuit breaker, is the important means of protection power consumption equipment and personal safety.The basic defencive function of circuit breaker mainly contains overload protection and short-circuit protection, can also add functions such as earth leakage protective, ground protection, parameter demonstration and network communication.The protection of modern circuit breaker is exactly an electronic trip unit with the control core.At present, produce both at home and abroad and the circuit breaker that uses is generally thermal overload release and magnetictrip.Yet, existing release defencive function imperfection, control also dumb, complicated operation.
Summary of the invention
The technical problem that the present invention will solve provides a kind of defencive function and is gradually improved, control more flexible, the method for work of operating easier intelligent release.
For solving the problems of the technologies described above; The present invention adopts following technical scheme: this intelligent release comprises power circuit, current detecting and programmable amplifier, voltage sample and amplification, CPU, display circuit and keyboard and encoder, dropout driving mechanism, magnetic flow convertor, hollow mutual inductor and fast saturated instrument transformer; The fast saturated instrument transformer parallel connection of respectively installing one by three-phase provides the energy for each parts; Do current sampling and program control amplification by the secondary side of three hollow mutual inductors; Import analog multichannel switch then. carry out voltage sample, amplification and filtering by transformer, defeated then human simulation variable connector; By the keyboard and yard device that contracts, be set the current value and the operate time of the moving and single phase ground fault of overload, short circuit short time delay, short circuit wink in advance, and these numerical value are defeated by CPU; When various fault takes place in circuit, when meeting or exceeding keyboard or encoder set point,, export to CPU then through gating control input mux like fault, CPU transfers to drive circuit through after the computing, imports magnetic flow convertor again; During the armature normal condition; The perseverance that is produced by the permanent magnet on the iron core attracts to magnetic flux, and the flux polarity that the direct current of drive circuit output produces is opposite with the magnetic flux of permanent magnet, just offsets the suction to armature unshakable in one's determination; Armature discharges; Its catch bar is thrown off the snap close on circuit breaker four connecting rods, and circuit breaker trip cuts off circuit.
Further, said power circuit comprises authigenic power supply and accessory power supply.
Further, said supply voltage has+5V ,+12V and+24V, supply CPU, electric current, voltage sample and dropout driving mechanism respectively.
Further, the every 0.5s of electric current and voltage detects once.。
Further, said magnetic flow convertor is a unidirectional polarized relay.
The method of work of intelligent release of the present invention can guarantee the safety of circuit, and relative to existing technologies, it is gradually improved the defencive function of circuit breaker, controls more flexibly, operates easier.It is highly sensitive, and the protection working range is big.
Description of drawings
Fig. 1 is the sketch map of the method for work of the intelligent release of the present invention.
Embodiment
In the present embodiment; Shown in Figure 1, this intelligent release partly is made up of power circuit (comprising authigenic power supply, accessory power supply), current detecting and programmable amplifier, voltage sample and amplification (adding filtering), CPU, display circuit and keyboard and encoder, dropout driving mechanism, magnetic flow convertor, hollow mutual inductor, fast saturated instrument transformer etc.Its operation principle is: the fast saturated instrument transformer parallel connection of respectively being installed by three-phase provides the energy (working power) for each parts.Supply voltage has+5V ,+12V and+24V, supply CPU, electric current, voltage sample and dropout driving mechanism respectively.
Do current sampling and program control amplification by the secondary side of three hollow mutual inductors, import analog multichannel switch then. carry out voltage sample, amplification, filtering, defeated human simulation variable connector then by transformer (one of every phase).The every 0.5s of electric current and voltage detects once.
By the keyboard and yard device that contracts, be set the current value and the operate time of the moving and single phase ground fault of overload, short circuit short time delay, short circuit wink in advance, and these numerical value are defeated by CPU (central processing unit).
When various fault takes place in circuit, when meeting or exceeding keyboard or encoder set point,, export to CPU then through the defeated people's variable connector of gating control like fault, CPU transfers to drive circuit through after the computing, imports magnetic flow convertor again.Magnetic flow convertor is actually a unidirectional polarized relay, and during armature (connecting a catch bar thereafter) normal condition, the perseverance that is produced by the permanent magnet on the iron core attracts to magnetic flux.The flux polarity that the direct current of drive circuit output produces is opposite with the magnetic flux of permanent magnet, just offsets the suction to armature unshakable in one's determination, and armature discharges, and its catch bar is thrown off the snap close on circuit breaker four connecting rods, and circuit breaker trip cuts off circuit.CPU also connects and extends out holder with various information: store fault current, operate time etc., LED (charactron) display circuit (showing each phase running current, voltage, fault current etc.), auxiliary relay (auxiliary relay in the secondary connection seat of circuit breaker) and communication interface RS-485 serial ports.
When power supply is cut off, in order to preserve signal,, circuit breaker is made an experiment simultaneously for when major loop is not switched on, just be provided with the accessory power supply of alternating current 220V.
The method of work of intelligent release of the present invention can guarantee the safety of circuit, and relative to existing technologies, it is gradually improved the defencive function of circuit breaker, controls more flexibly, operates easier.It is highly sensitive, and the protection working range is big.
Below the present invention is done a detailed description, the above is merely the present invention's preferred embodiment, when can not limiting practical range of the present invention, promptly allly does impartially to change and modify according to the application's scope, all should still belong in the covering scope of the present invention.
Claims (5)
1. the method for work of an intelligent release; This intelligent release comprises power circuit, current detecting and programmable amplifier, voltage sample and amplification, CPU, display circuit and keyboard and encoder, dropout driving mechanism, magnetic flow convertor, hollow mutual inductor and fast saturated instrument transformer; It is characterized in that: the fast saturated instrument transformer parallel connection of respectively being installed by three-phase provides the energy for each parts; Do current sampling and program control amplification by the secondary side of three hollow mutual inductors; Import analog multichannel switch then. carry out voltage sample, amplification and filtering by transformer, defeated then human simulation variable connector; By the keyboard and yard device that contracts, be set the current value and the operate time of the moving and single phase ground fault of overload, short circuit short time delay, short circuit wink in advance, and these numerical value are defeated by CPU; When various fault takes place in circuit, when meeting or exceeding keyboard or encoder set point,, export to CPU then through gating control input mux like fault, CPU transfers to drive circuit through after the computing, imports magnetic flow convertor again; During the armature normal condition; The perseverance that is produced by the permanent magnet on the iron core attracts to magnetic flux, and the flux polarity that the direct current of drive circuit output produces is opposite with the magnetic flux of permanent magnet, just offsets the suction to armature unshakable in one's determination; Armature discharges; Its catch bar is thrown off the snap close on circuit breaker four connecting rods, and circuit breaker trip cuts off circuit.
2. the method for work of intelligent release according to claim 1, it is characterized in that: said power circuit comprises authigenic power supply and accessory power supply.
3. the method for work of intelligent release according to claim 1 is characterized in that: said supply voltage has+5V ,+12V and+24V, supply CPU, electric current, voltage sample and dropout driving mechanism respectively.
4. the method for work of intelligent release according to claim 1 is characterized in that: the every 0.5s of electric current and voltage detects once.
5. the method for work of intelligent release according to claim 1, it is characterized in that: said magnetic flow convertor is a unidirectional polarized relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102774431A CN102427003A (en) | 2011-09-19 | 2011-09-19 | Intelligent tripping device working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102774431A CN102427003A (en) | 2011-09-19 | 2011-09-19 | Intelligent tripping device working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102427003A true CN102427003A (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102774431A Pending CN102427003A (en) | 2011-09-19 | 2011-09-19 | Intelligent tripping device working method |
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| Country | Link |
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| CN (1) | CN102427003A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576582A (en) * | 2012-07-24 | 2014-02-12 | 江苏创能电器有限公司 | Intelligent molded case controller |
| CN106451765A (en) * | 2016-08-31 | 2017-02-22 | 江苏创能电器有限公司 | Control device of marine molded case circuit breaker |
| CN106449319A (en) * | 2015-08-07 | 2017-02-22 | 郑斌 | Smart release |
| CN109994991A (en) * | 2019-05-07 | 2019-07-09 | 天津市百利电气有限公司 | Intelligent plastic casing break |
| CN111181126A (en) * | 2020-01-17 | 2020-05-19 | 中国电力科学研究院有限公司 | Method and system for dynamically adjusting short-circuit current based on power transmission system topology |
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| US4368394A (en) * | 1979-10-02 | 1983-01-11 | Naimer H L | Computer-controlled switching device |
| CN2760744Y (en) * | 2004-09-06 | 2006-02-22 | 上海柯灵电子厂 | Circuit breaker controller with advertising screen capable of talking |
| CN101814714A (en) * | 2009-02-21 | 2010-08-25 | 湖北盛佳电器设备有限公司 | Load control circuit breaker with circuit abnormal detection function |
| CN201682263U (en) * | 2010-05-19 | 2010-12-22 | 王士纲 | Leakage protection device |
| CN201966574U (en) * | 2011-03-30 | 2011-09-07 | 苏州工业园区非而智能电器有限公司 | Intelligent electric leakage controller with three-section protection function |
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2011
- 2011-09-19 CN CN2011102774431A patent/CN102427003A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4368394A (en) * | 1979-10-02 | 1983-01-11 | Naimer H L | Computer-controlled switching device |
| CN2760744Y (en) * | 2004-09-06 | 2006-02-22 | 上海柯灵电子厂 | Circuit breaker controller with advertising screen capable of talking |
| CN101814714A (en) * | 2009-02-21 | 2010-08-25 | 湖北盛佳电器设备有限公司 | Load control circuit breaker with circuit abnormal detection function |
| CN201682263U (en) * | 2010-05-19 | 2010-12-22 | 王士纲 | Leakage protection device |
| CN201966574U (en) * | 2011-03-30 | 2011-09-07 | 苏州工业园区非而智能电器有限公司 | Intelligent electric leakage controller with three-section protection function |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576582A (en) * | 2012-07-24 | 2014-02-12 | 江苏创能电器有限公司 | Intelligent molded case controller |
| CN103576582B (en) * | 2012-07-24 | 2016-09-21 | 江苏创能电器有限公司 | A kind of intelligent plastic housing controller |
| CN106449319A (en) * | 2015-08-07 | 2017-02-22 | 郑斌 | Smart release |
| CN106451765A (en) * | 2016-08-31 | 2017-02-22 | 江苏创能电器有限公司 | Control device of marine molded case circuit breaker |
| CN109994991A (en) * | 2019-05-07 | 2019-07-09 | 天津市百利电气有限公司 | Intelligent plastic casing break |
| CN111181126A (en) * | 2020-01-17 | 2020-05-19 | 中国电力科学研究院有限公司 | Method and system for dynamically adjusting short-circuit current based on power transmission system topology |
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 528437 B building, No. 53 West Jiangling Road, torch hi tech Development Zone, Guangdong, Zhongshan Applicant after: GUANGDONG TECCO ELECTRIC CO., LTD. Address before: 528437 B building, No. 53 West Jiangling Road, torch hi tech Development Zone, Guangdong, Zhongshan Applicant before: Guangdong Tenfo Electrical Group Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: GUANGDONG TIANFU ELECTRIC GROUP CO., LTD. TO: GUANGDONG TECCO ELECTRIC CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120425 |
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| RJ01 | Rejection of invention patent application after publication |