CN103023133A - Dual power supply automatic changeover gear controller - Google Patents
Dual power supply automatic changeover gear controller Download PDFInfo
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- CN103023133A CN103023133A CN2012105128286A CN201210512828A CN103023133A CN 103023133 A CN103023133 A CN 103023133A CN 2012105128286 A CN2012105128286 A CN 2012105128286A CN 201210512828 A CN201210512828 A CN 201210512828A CN 103023133 A CN103023133 A CN 103023133A
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Abstract
Disclosed is a dual power supply automatic changeover gear controller. The controller comprises two voltage frequency phase acquisition circuits, three drive output circuits and a judgment operation control center, wherein the two voltage frequency phase acquisition circuits are connected to a main power supply line and a standby power supply line respectively, two ends of the judgment operation control center are respectively connected to output ends of two voltage frequency phase acquisition circuits,, three output ends are connected to the input end of the drive output circuit, and output ends of the three drive output circuits are respectively connected to a main power supply breaker, a standby power supply breaker and a bus tie circuit breaker on the dual power supply automatic changeover gear with bus tie circuit breaker control. The controller can control the bus tie circuit breaker which is not controlled by a traditional dual power supply automatic changeover gear, the bus tie circuit breaker is disconnected and the fault power supply breaker is disconnected when the main power supply and the standby power supply meet parallel switching conditions, the power supply switching without interruption interval can be achieved, the load operation stopping problem is avoided and the operation is simplified greatly.
Description
Technical field
The present invention relates to a kind of power supply automatic converting device, particularly relate to a kind of dual-power automatic switching device controller that can control bus and possess handoff functionality in parallel.
Background technology
Can carry out smoothly in order to guarantee industrial production; avoid causing shutdown because of electric power system fault; all adopt duplicate supply fanout operation or " one main one is standby " supply power mode in Large Scale and Continuous manufacture enterprises such as petrochemical industry, oil field, metallurgy, electric power; when occurring cutting off the power supply to guarantee one road power supply to break down, another road power supply can drop into immediately.This type of occasion adopts dual-power automatic switching device to carry out the switching of power supply usually.But, dual-power automatic switching device commonly used usually can only be to being connected to the master in the market, circuit breaker on the standby two-way power line is controlled and is changed, now increasing industrial and mining enterprises, such as railway, power plant, power supply administration, important electricity consumption occasion in the industry such as electric power network and communication adopts the dual power supply mode with the mother line as shown in Figure 1 more and more, at this moment just need to adopt the dual-power automatic switching device with bus control, be about to the main power source circuit breaker 4 on this device, auxiliaries-supply circuit-breaker 5 and bus 6 are connected to main power line 7, on stand-by power supply line 8 and the mother line 9.Yet, no matter be traditional dual-power automatic switching device or the dual-power automatic switching device with bus control on the ordinary meaning, in transfer process, all can there be one period change-over time that is transformed into stand-by power supply from main power source, this time is the power failure time concerning load, this time can exert an influence to Computerized monitor system, transducer, electronic device and the equipment etc. that adopt Alternating Current Power Supply undoubtedly, sometimes even can send alarm signal or out of control because of power failure.But the relevant report that up to the present not yet find to be used for the controller of above-mentioned dual-power automatic switching device with bus control.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of dual-power automatic switching device controller that can realize that load is switched without outage.
In order to achieve the above object, dual-power automatic switching device controller provided by the invention comprises two electric voltage frequency phase acquisition circuit, three driver output circuit and judges the s operation control center; Wherein two electric voltage frequency phase acquisition circuit are connected on main power line and the stand-by power supply line; Two inputs judging the s operation control center link to each other with the output of above-mentioned two electric voltage frequency phase acquisition circuit respectively, three outputs join with the input of a driver output circuit respectively, and the output of three driver output circuit then is connected respectively with main power source circuit breaker, auxiliaries-supply circuit-breaker and bus on the dual-power automatic switching device of bus control.
Phase line Ua in described electric voltage frequency phase acquisition circuit access main power source or the stand-by power supply three phase current feeder, Ub, Uc.
Be provided with in the heart the input unit for setting parameter in the described judgement s operation control.
Dual-power automatic switching device controller provided by the invention can not only be controlled traditional out of contior bus of dual-power automatic switching device, also have and leading, when standby two-way power supply satisfies switching condition in parallel, close first the again function of disengagement failure power circuit breaker of bus, thereby realize without " break period " electrical source exchange, so just can not cause the load running disruption, greatly simplified operation, shortened the operating time, reduced the number of operations of auxiliary equipment, thereby improved the safety operation level of electricity consumption, be specially adapted to micro computer monitoring and use electronic equipment more, the automaticity high field is closed.
Description of drawings
Fig. 1 is the dual power supply conspectus with the mother line commonly used at present.
Fig. 2 is that dual-power automatic switching device controller provided by the invention consists of block diagram.
Fig. 3 is electric voltage frequency phase acquisition circuit theory diagrams in the dual-power automatic switching device controller provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments dual-power automatic switching device controller provided by the invention is elaborated.The parts identical with prior art adopt identical drawing reference numeral, and omit its detailed description of carrying out.
Such as Fig. 2 and shown in Figure 1, dual-power automatic switching device controller provided by the invention comprises two electric voltage frequency phase acquisition circuit 1, three driver output circuit 2 and judges s operation control center 3; Wherein two electric voltage frequency phase acquisition circuit 1 are connected on main power line 7 and the stand-by power supply line 8; Two inputs judging s operation control center 3 link to each other with the output of above-mentioned two electric voltage frequency phase acquisition circuit 1 respectively, three outputs join with the input of a driver output circuit 2 respectively, and the output of three driver output circuit 2 then is connected respectively with main power source circuit breaker 4, auxiliaries-supply circuit-breaker 5 and bus 6 on the dual-power automatic switching device of bus control.
As shown in Figure 3, phase line Ua in described electric voltage frequency phase acquisition circuit 1 access main power source or the stand-by power supply three phase current feeder, Ub, Uc, do not access neutral line Un, make its TN system that is not only applicable to the neutral line, (wherein TN represents that electric power (power supply) system concerns over the ground also to be applicable to not have the IT system of the neutral line and TT system, T represents it is neutral-point solid ground, and I represents that all live parts are earth-free; IT represents the metal part relation over the ground that power device exposes, the earthing of casing of T indication equipment, and other any earth points in it and the system are without direct relation; N represents load employing zero connection protection).In addition, the front end reduction voltage circuit of electric voltage frequency phase acquisition circuit 1 can be traditional voltage transformer or transformer, also can be the resistor network that antisurge resistance forms.
The input unit that described judgement s operation control center 3 is provided with for setting parameter.
Now dual-power automatic switching device controller operation principle provided by the invention is described below: electric voltage frequency phase acquisition circuit 1 detects voltage, frequency and the phase place of active and standby two-way power supply in real time, then judges s operation control center 3 with being input to after above-mentioned detected voltage signal step-down, the conversion.Judge that s operation control center 3 calculates the voltage difference of two-way power supply according to the power state signal of electric voltage frequency phase acquisition circuit 1 input, difference on the frequency and phase difference, and judge accordingly the master, whether standby two-way supply voltage exists fault, judge when judging s operation control center 3 that main or backup power source voltage breaks down and (this condition comprises voltage difference when satisfying the power supply switching condition in parallel that the user sets by input unit in advance, difference on the frequency and phase difference, requiring in theory voltage difference is zero, difference on the frequency is zero, when being zero, phase difference just can in parallelly switch, but difference that in fact can not these three parameters all is zero, so the user can be set in rational scope according to use occasion and the experience of oneself during practical operation, be 1% such as voltage difference, difference on the frequency 1%, phase difference 1% etc.), it will send control signal to driver output circuit 2, so that bus 6 is closed a floodgate, then with the trouble power breaker open operation, thereby realize " close afterwards first and divide " nothing interruption electrical source exchange; When judging that s operation control center 3 judges that main or backup power source voltage breaks down but when not satisfying in advance the power supply switching condition in parallel of setting by input unit, it will send control signal to driver output circuit 2, with with the trouble power breaker open operation, then bus 6 is closed a floodgate.
Claims (3)
1. dual-power automatic switching device controller is characterized in that: described dual-power automatic switching device controller comprises two electric voltage frequency phase acquisition circuit (1), three driver output circuit (2) and judges s operation control center (3); Wherein two electric voltage frequency phase acquisition circuit (1) are connected on main power line (7) and the stand-by power supply line (8); Two inputs judging s operation control center (3) link to each other with the output of above-mentioned two electric voltage frequency phase acquisition circuit (1) respectively, three outputs join with the input of a driver output circuit (2) respectively, and the output of three driver output circuit (2) then is connected respectively with main power source circuit breaker (4), auxiliaries-supply circuit-breaker (5) and bus (6) on the dual-power automatic switching device of bus control.
2. dual-power automatic switching device controller according to claim 1 is characterized in that: the phase line Ua in described electric voltage frequency phase acquisition circuit (1) access main power source or the stand-by power supply three phase current feeder, Ub, Uc.
3. dual-power automatic switching device controller according to claim 1, it is characterized in that: described judgement s operation control center (3) is provided with the input unit for setting parameter.
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| CN2012105128286A CN103023133A (en) | 2012-12-04 | 2012-12-04 | Dual power supply automatic changeover gear controller |
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| CN2012105128286A CN103023133A (en) | 2012-12-04 | 2012-12-04 | Dual power supply automatic changeover gear controller |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248116A (en) * | 2013-05-31 | 2013-08-14 | 天津市百利电气有限公司 | Automatic change-over switch with two-circuit feeding system phase difference detecting device |
| CN103699004A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Parallel function-based automatic transfer switching device control system and control method |
| CN104319872A (en) * | 2014-10-31 | 2015-01-28 | 国家电网公司 | Low-voltage electrical parallel connection air circuit breaker of transformer substation |
| CN104467160A (en) * | 2013-09-20 | 2015-03-25 | 天津中电华利电器科技集团有限公司 | Dual-power source without connecting signal line |
| CN104701974A (en) * | 2015-04-08 | 2015-06-10 | 常熟开关制造有限公司(原常熟开关厂） | Control method of parallel-connection power source conversion device and parallel-connection power source conversion device |
| CN104701973A (en) * | 2015-04-08 | 2015-06-10 | 常熟开关制造有限公司(原常熟开关厂） | Control method for parallel power supply conversion device and parallel power supply conversion device |
| CN106374613A (en) * | 2016-09-07 | 2017-02-01 | 神华集团有限责任公司 | Switching method and device of desulfurization power supply in power plant |
| CN108767846A (en) * | 2018-04-27 | 2018-11-06 | 天津市百利电气有限公司 | Double-power supply switching device |
| CN109669071A (en) * | 2018-11-21 | 2019-04-23 | 绵阳市维博电子有限责任公司 | External power grid phase difference monitors sensor and external power grid phase monitor system |
| CN109861378A (en) * | 2019-02-26 | 2019-06-07 | 国网浙江慈溪市供电有限公司 | Power supply hot switching method, system, electronic device and computer readable medium for power grid |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248116A (en) * | 2013-05-31 | 2013-08-14 | 天津市百利电气有限公司 | Automatic change-over switch with two-circuit feeding system phase difference detecting device |
| CN104467160A (en) * | 2013-09-20 | 2015-03-25 | 天津中电华利电器科技集团有限公司 | Dual-power source without connecting signal line |
| CN103699004A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Parallel function-based automatic transfer switching device control system and control method |
| CN104319872A (en) * | 2014-10-31 | 2015-01-28 | 国家电网公司 | Low-voltage electrical parallel connection air circuit breaker of transformer substation |
| CN104701974A (en) * | 2015-04-08 | 2015-06-10 | 常熟开关制造有限公司(原常熟开关厂） | Control method of parallel-connection power source conversion device and parallel-connection power source conversion device |
| CN104701973A (en) * | 2015-04-08 | 2015-06-10 | 常熟开关制造有限公司(原常熟开关厂） | Control method for parallel power supply conversion device and parallel power supply conversion device |
| CN106374613A (en) * | 2016-09-07 | 2017-02-01 | 神华集团有限责任公司 | Switching method and device of desulfurization power supply in power plant |
| CN108767846A (en) * | 2018-04-27 | 2018-11-06 | 天津市百利电气有限公司 | Double-power supply switching device |
| CN109669071A (en) * | 2018-11-21 | 2019-04-23 | 绵阳市维博电子有限责任公司 | External power grid phase difference monitors sensor and external power grid phase monitor system |
| CN109861378A (en) * | 2019-02-26 | 2019-06-07 | 国网浙江慈溪市供电有限公司 | Power supply hot switching method, system, electronic device and computer readable medium for power grid |
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Application publication date: 20130403 |