CN102790380B - Method suitable for intelligent electronic circuit breaker adopting inverter power supply as power supply - Google Patents
Method suitable for intelligent electronic circuit breaker adopting inverter power supply as power supply Download PDFInfo
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- CN102790380B CN102790380B CN201210272334.5A CN201210272334A CN102790380B CN 102790380 B CN102790380 B CN 102790380B CN 201210272334 A CN201210272334 A CN 201210272334A CN 102790380 B CN102790380 B CN 102790380B
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Abstract
The invention discloses a method suitable for an intelligent electronic circuit breaker adopting an inverter power supply as a power supply. The method is that current sensors of all circuits can real timely detect the current of each circuit; when the current of one of the circuits is larger than a given value, the circuit load is cut off; when the current of each circuit is not larger than the given value, but the sum of the current of all the circuits is larger than a total rated value of the inverter power supply, and the circuit causing overload is a secondary circuit, the corresponding secondary circuit is cut off; and when the circuit causing the overload is a main circuit, a circuit control unit carries out judgment. The method provided by the embodiment of the invention has the benefits that the judgment basis is fuller and the action is more accurate. Moreover, the load of the inverter power supply is utilized to reduce the fault expansion range of a distribution circuit to the utmost, and the supply reliability of the inverter power supply is effectively improved.
Description
Technical field
The present invention relates to a kind of inverter that is applicable to as the method for the smart electronics circuit breaker of power supply, more particularly, relate to a kind of inverter that is applicable to as the method in the excision overload fault loop of powersupply system.
Background technology
In current convertor equipment, when there is overload or short trouble, in order to guarantee that convertor equipment nonoverload damages, and need to close the output of whole equipment.By closing whole equipment, although can protect whole current flow devices, the in the situation that of many output loops, can cause the also dead electricity simultaneously of loop that overload do not occur, bring unnecessary power supply trouble.
Summary of the invention
The present invention is directed to the proposition of above problem, and provide a kind of inverter that is applicable to as the method for the smart electronics circuit breaker of power supply.
Be applicable to inverter as a method for the smart electronics circuit breaker of power supply, it is characterized in that, the current sensor in each loop detects the loop current in each loop in real time; Computing testing circuit compares computing by the loop current in each loop and given electric current, when wherein the electric current in a loop is greater than set-point, excises this loop load; Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is greater than inverter complete machine rated value, and when the loop that causes overload is secondary circuit, circuit controls unit excises corresponding secondary circuit; When the loop that causes overload is main loop, circuit controls unit judges, can judgement excision secondary circuit guarantee complete machine nonoverload, in the time can guaranteeing complete machine nonoverload, excision secondary circuit, in the time can not guaranteeing complete machine overload, the main loop of the complete machine overload that excision causes, the operation of ends with system;
Comprise the following steps:
S1, initialization system;
The current sensor in S2, each loop detects the electric current in each loop in real time, and loop current is sent to an I/O expander of computing testing circuit;
S3, computing testing circuit compare computing by the electric current in each loop and given electric current, when wherein the electric current in a loop is greater than set-point, excise this loop load; Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is while being greater than inverter complete machine rated value, execution step S4;
The 2nd I/O expander of S4, computing testing circuit is resolved the loop address that causes overload;
S5, computing testing circuit are judged and are caused whether the loop of overload is secondary circuit by loop address;
S6, when causing that the loop of overload is secondary circuit, circuit controls unit excises corresponding secondary circuit; When causing that the loop of overload is not secondary circuit, circuit controls unit judges, judges that can excision secondary circuit guarantee complete machine nonoverload;
When S7, excision secondary circuit inverter complete machine nonoverload, excision secondary circuit, circulation execution step S2 to S7;
When S8, excision secondary circuit inverter complete machine still transship, the primary loop that excision causes overload, the operation of ends with system.
Preferably, in method, by judgement excision secondary circuit in software determining step S6, can guarantee complete machine nonoverload.
Implement the inverter that is applicable to of the present invention as the method for the smart electronics circuit breaker of power supply, there is following beneficial effect: (1), by current sensor being set on every loop, detect each loop and whether have overload situations, when there being overload situations, and when the loop that causes overload is secondary circuit, circuit controls unit excises corresponding loop; When causing that the loop of overload is not secondary circuit, circuit controls unit judges, judges that can excision secondary circuit guarantee complete machine nonoverload; During excision secondary circuit inverter complete machine nonoverload, excision secondary circuit; When excision secondary circuit inverter complete machine also transships, the primary loop that excision causes overload, the operation of ends with system, makes basis for estimation more abundant, and it is more accurate to move.(2), the current sensor in each loop also detects the pulse signal in each loop, when there is pulse signal, judge whether inverter output voltage has the no-voltage time that is greater than 5ms, if had, excision causes the loop that occurs pulse signal, make basis for estimation more abundant, it is more accurate to move.(3), the load of inverter power supply reduces the fault expanded scope of distribution loop to greatest extent, effectively improved the reliability of inverter power supply.
Accompanying drawing explanation
Fig. 1 is that the present invention is applicable to inverter as the control flow chart of the method for the smart electronics circuit breaker of power supply;
Fig. 2 is the process chart that current sensor detects pulse signal;
Fig. 3 is the decision circuitry figure of the no-voltage time of inverter output voltage;
Fig. 4 is that alternating voltage forms the front and back oscillogram of direct current through rectification circuit.
Embodiment
The invention provides a kind of inverter that is applicable to as the method for the smart electronics circuit breaker of power supply, the current sensor in each loop detects the loop current in each loop in real time; Computing testing circuit compares computing by the loop current in each loop and given electric current, when wherein the electric current in a loop is greater than set-point, excises this loop load; Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is greater than inverter complete machine rated value, and the loop that causes overload is while being secondary circuit, and circuit controls unit excises corresponding secondary circuit; Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is greater than inverter complete machine rated value, and when the loop that causes overload is not secondary circuit, circuit controls unit judges, judges that can excision secondary circuit guarantee complete machine nonoverload, in the time can guaranteeing complete machine nonoverload, excision secondary circuit, in the time can not guaranteeing complete machine overload, the main loop of the complete machine overload that excision causes, the operation of ends with system.Main loop of the present invention and secondary circuit are set as required by user before system operation.
Below in conjunction with accompanying drawing, technical scheme of the present invention is elaborated.Fig. 1 is that the present invention is applicable to inverter as the control flow chart of the method for the smart electronics circuit breaker of power supply, as shown in the figure.
Being applicable to inverter comprises the following steps as the method for the smart electronics circuit breaker of power supply: S1, initialization system; The current sensor in S2, each loop detects electric current and the pulse signal in each loop in real time, and loop current is sent to an I/O expander of computing testing circuit; S3, computing testing circuit compare computing by the electric current in each loop and given electric current, when wherein the electric current in a loop is greater than set-point, excise this loop load; Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is while being greater than inverter complete machine rated value, execution step S4; The 2nd I/O expander of S4, computing testing circuit is resolved the loop address that causes overload; S5, computing testing circuit are judged and are caused whether the loop of overload is secondary circuit by loop address; S6, when causing that the loop of overload is secondary circuit, circuit controls unit excises corresponding secondary circuit; When causing that the loop of overload is not secondary circuit, circuit controls unit judges, judges that can excision secondary circuit guarantee complete machine nonoverload; When S7, excision secondary circuit inverter complete machine nonoverload, excision secondary circuit, circulation execution step S2 to S7; When S8, excision secondary circuit inverter complete machine also transship, the primary loop that excision causes overload, the operation of ends with system.By judgement excision secondary circuit in software determining step S6, can guarantee complete machine nonoverload.
In smart electronics circuit breaker at inverter as power supply, a current sensor is all set on every loop, each current sensor detects the loop current in its loop, place.When starting working, after initialization system, the current sensor in each loop detects loop current and the pulse signal in each loop in real time, and by detecting separately the I/O expander that the loop current obtaining is sent to computing testing circuit, the pulse signal detecting is sent to pulse-detecting circuit.The loop current that computing testing circuit sends the current sensor coming from each loop judges, by the loop current on each loop and given electric current are compared to computing, judges whether each loop occurs overload.When wherein the electric current in certain loop is greater than set-point, judgment result is that: overload appears in this loop, and now, circuit controls unit excises this loop load.Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is while being greater than inverter complete machine rated value, if when excision secondary circuit makes inverter complete machine nonoverload, excise secondary circuit; When if excision secondary circuit is still transshipped inverter complete machine, the main loop that excision causes overload, the operation of ends with system.
The current sensor in each loop also detects the pulse signal in loop in real time, when there is pulse signal, judges whether inverter output voltage exists the no-voltage time that is greater than 5ms, if existed, excision causes the corresponding circuit of pulse signal.Fig. 2 is the process chart that current sensor detects pulse signal, as shown in the figure.The current sensor in each loop detects in each loop, whether there is pulse signal in real time, when there is pulse signal in N loop, record this loop and have pulse signal, then judge whether inverter output voltage has the no-voltage time that is greater than 0.5ms, if had, excise N loop, if do not had, continue to detect in each loop whether have pulse signal in real time.
Fig. 3 is the decision circuitry figure of the no-voltage time of inverter output voltage.As shown in the figure, after rectification circuit (comprising diode D1, D2, D3, D4) series limiting resistor R1, connect optical coupling isolation circuit U1, optical coupling isolation circuit U1 delivers on the IO_5 mouth of single-chip microcomputer after by pull-up resistor R2 and current-limiting resistance R3.Fig. 4 is that alternating voltage forms the front and back oscillogram of direct current through rectification circuit.Alternating voltage is after rectification circuit rectification is direct current, by optical coupling isolation circuit, carry out light-coupled isolation again, after light-coupled isolation by delivering to after pull-up resistor R2 and current-limiting resistance R3 on the IO_5 mouth of single-chip microcomputer, single-chip microcomputer is according to the time real-time inspection IO_5 mouth of setting, for example each millisecond checks once, time is set as required, when detecting as high level (alternating voltage disappearance), counting accumulates once, when detecting as low level (alternating voltage existence), to count zero clearing, when counting accumulative total reaches 5 now, show that inverter output voltage exists the no-voltage time that is greater than 5ms.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. be applicable to inverter as a method for the smart electronics circuit breaker of power supply, it is characterized in that, the current sensor in each loop detects the loop current in each loop in real time; Computing testing circuit compares computing by the loop current in each loop and given electric current, when wherein the electric current in a loop is greater than set-point, excises this loop load; Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is greater than inverter complete machine rated value, and when the loop that causes overload is secondary circuit, circuit controls unit excises corresponding secondary circuit; When the loop that causes overload is main loop, circuit controls unit judges, can judgement excision secondary circuit guarantee complete machine nonoverload, in the time can guaranteeing complete machine nonoverload, excision secondary circuit, in the time can not guaranteeing complete machine overload, the main loop of the complete machine overload that excision causes, the operation of ends with system;
Comprise the following steps:
S1, initialization system;
The current sensor in S2, each loop detects the electric current in each loop in real time, and loop current is sent to an I/O expander of computing testing circuit;
S3, computing testing circuit compare computing by the electric current in each loop and given electric current, when wherein the electric current in a loop is greater than set-point, excise this loop load; Electric current when every loop is not all greater than set-point, but the electric current sum in each loop is while being greater than inverter complete machine rated value, execution step S4;
The 2nd I/O expander of S4, computing testing circuit is resolved the loop address that causes overload;
S5, computing testing circuit are judged and are caused whether the loop of overload is secondary circuit by loop address;
S6, when causing that the loop of overload is secondary circuit, circuit controls unit excises corresponding secondary circuit; When causing that the loop of overload is not secondary circuit, circuit controls unit judges, judges that can excision secondary circuit guarantee complete machine nonoverload;
When S7, excision secondary circuit inverter complete machine nonoverload, excision secondary circuit, circulation execution step S2 to S7;
When S8, excision secondary circuit inverter complete machine still transship, the primary loop that excision causes overload, the operation of ends with system.
2. can the inverter that be applicable to according to claim 1, as the method for the smart electronics circuit breaker of power supply, is characterized in that, by judgement excision secondary circuit in software determining step S6, guarantee complete machine nonoverload.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210272334.5A CN102790380B (en) | 2012-08-01 | 2012-08-01 | Method suitable for intelligent electronic circuit breaker adopting inverter power supply as power supply |
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| CN201210272334.5A CN102790380B (en) | 2012-08-01 | 2012-08-01 | Method suitable for intelligent electronic circuit breaker adopting inverter power supply as power supply |
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| CN102790380A CN102790380A (en) | 2012-11-21 |
| CN102790380B true CN102790380B (en) | 2014-11-12 |
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| CN105048853A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Control method for photocoupling isolated vehicle-mounted power supply inverter |
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| JP3464169B2 (en) * | 1999-06-07 | 2003-11-05 | 株式会社ケーヒン | Portable generator and protection circuit for portable generator |
| JP2002186172A (en) * | 2000-12-14 | 2002-06-28 | Kokusan Denki Co Ltd | Inverter power generator and control method in overloaded condition |
| US7196433B2 (en) * | 2002-08-08 | 2007-03-27 | Tai-Her Yang | Multi-output device with preset power supply priority |
| CN1519872A (en) * | 2003-01-20 | 2004-08-11 | 张若愚 | Intelligent phase splitting control type switch electric appliance in high and low voltages |
| CN101710685B (en) * | 2009-11-20 | 2012-05-30 | 深圳市科陆电子科技股份有限公司 | Intelligent recloser |
| CN201946965U (en) * | 2011-03-15 | 2011-08-24 | 大连东方电力设备有限公司 | Loop system for clearing overloading fault or short circuiting fault |
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Owner name: TIAN YE Free format text: FORMER OWNER: DALIAN EAST ELECTRIC EQUIPMENT CO., LTD. Effective date: 20131218 |
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Effective date of registration: 20131218 Address after: Dalian City, Liaoning Province in 116041 Lushun district innovation Street No. 23-2 Applicant after: Tian Ye Address before: 116041 innovation street, Lushunkou District, Liaoning, Dalian 23-2 Applicant before: Dalian East Electric Equipment Co., Ltd. |
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Effective date of registration: 20161220 Address after: 100088 Beijing City, North Third Ring Road, No. 31, building 9, floor 905, room 4, room Patentee after: Beijing Dongdao Science and Trade Co., Ltd. Address before: Dalian City, Liaoning Province in 116041 Lushun district innovation Street No. 23-2 Patentee before: Tian Ye |
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