CN103476192A - Three-phase load control circuit capable of boosting voltage - Google Patents
Three-phase load control circuit capable of boosting voltage Download PDFInfo
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- CN103476192A CN103476192A CN2013103554245A CN201310355424A CN103476192A CN 103476192 A CN103476192 A CN 103476192A CN 2013103554245 A CN2013103554245 A CN 2013103554245A CN 201310355424 A CN201310355424 A CN 201310355424A CN 103476192 A CN103476192 A CN 103476192A
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Abstract
The invention provides a three-phase load control circuit capable of boosting voltage. The three-phase load control circuit comprises a control circuit and a voltage regulating circuit, wherein the control circuit comprises a PLC, corner connection relays and a plurality of voltage regulating relays; the voltage regulating circuit comprises loads and a three-phase coupling transformer; the two ends of each secondary coil of the three-phase autotransformer are respectively connected with a three-phase input end and a neutral wire input end; a plurality of taps of the secondary coils are respectively connected in series with the neutral ends of the loads through the plurality of voltage regulating relays; and three contacts of each corner connection relay are connected between every two loads. By adopting the three-phase load control circuit capable of boosting voltage, the disadvantage that a conventional energy-saving controller is only capable of bucking and is incapable of boosting can be overcome, when the voltage of an electrical network is normal, the voltage at the two ends of each load can be lowered for realizing the purpose of energy conservation, and when the voltage of the electrical network is quite low, the voltage at the two ends of each load can be increased so that the normal starting of a high-voltage gas discharge lamp can be realized.
Description
Technical field
The present invention relates to the lighting control technique field, refer in particular to a kind of threephase load control circuit that can boost.
Background technology
Along with the development of city illumination and Landscape Lighting, the power consumption problem more and more is subject to the attention of country and government.Many cities and area are because facing the problem of power shortage, often street lamp is adopted and carrys out saves energy every the control mode that small cup is turned off the light or turn off the light midnight, although but can reach like this purpose of energy-saving and emission-reduction, tend to cause the road lighting inequality, easily cause the generation of traffic accident.
At present, the illumination of road, tunnel and view all adopts high-voltage gas discharging light (High intensity Discharge usually, be abbreviated as HID), by the arc discharge in fluorescent tube, then produce very strong light in conjunction with the inert gas of filling in fluorescent tube or metallic vapour.Existing high-voltage gas discharging light commonly used has high-pressure sodium lamp, high-pressure mercury lamp, xenon lamp, metal halide lamp etc.
After high-voltage gas discharging light access voltage, produce electric arc between the electric arc tube two end electrodes, because being heated material in pipe, the high temperature action of electric arc flashes to steam, the electricity of cathode emission is in the anode motion process, clash into discharging substance atom is arranged, make it obtain power generation ionization and excite, then by excitation state, be returned to stable state.In order to guarantee the normal starter of high-voltage gas discharging light, need the high-voltage gas discharging light two ends maintain at the rated voltage state and maintain a period of time.Be subject to the operation principle restriction of high-voltage gas discharging light, when electrical network is low, what just may cause high-voltage gas discharging light can't normal ignition.Therefore adopt traditional energy saver, output end voltage all is equal to or less than input terminal voltage.
The Energy Saving Control of high-voltage gas discharging light adopts regulation voltage device and electronic ballast usually: the regulation voltage device adopts autotransformer usually, utilize the voltage tap of relay or contactless switching device regulating load end, with the regulatory function of the both end voltage that reaches light fixture; Electronic ballast can be realized the intellectuality of light is controlled by various automatic control very simply, can meet the requirement controlled of illumination, also can save a large amount of electric power, but the electronic ballast price is high and stability is not enough, therefore less employing in actual applications.
Within open day, be that the patent of invention file that on 09 14th, 2011, publication number are CN102186299A discloses a kind of lighting saving device, relate to street lamp control technology field, being provided with the sky be connected with power supply opens, the other end that sky is opened is connected on the input of the input of autotransformer and bypass contactor, and the gear output of autotransformer and the output of bypass contactor are connected respectively a thermal relay.This invention has utilized relay and autotransformer, but only can reach step-down, and can not realize Based Intelligent Control.
Summary of the invention
Can only step-down energy-conservation and can't the normal ignition high-voltage gas discharging light when line voltage is low or can not guarantee the problem of the normal lumen of high-voltage gas discharging light in order to solve existing streetlight control circuit, the present invention proposes a kind of threephase load control circuit that can boost, not only can be when line voltage be normal, reach energy-conservation purpose by reducing the high-voltage gas discharging light both end voltage, also can be when line voltage be low, rising high-voltage gas discharging light both end voltage, normally start high-voltage gas discharging light or increase the lumen of high-voltage gas discharging light.
The technical solution adopted in the present invention is: a kind of threephase load control circuit that can boost, comprise control circuit and regulating circuit, described control circuit comprises PLC controller and several relays, relay comprises a corner connection relay and several Voltage regulating relay, each relay all comprises control coil and the first contact, the second contact and the 3rd contact, described PLC controller is provided with two power ends, several inputs and several outputs, two power ends of PLC controller connect respectively A phase incoming end and neutral line input, each output of PLC controller is connected to neutral line input by the control coil of corner connection relay Voltage regulating relay respectively, described regulating circuit comprises load and coupling transformer, described load comprises the A phase load, B phase load and C phase load, described 3-phase autotransformer is provided with three secondary coils that contain several taps, be respectively the secondary coil Ta that holds mutually a and neutral line input that connects that connects the A phase load, connect secondary coil Tb that connecing of B phase load hold b and neutral line input mutually and the secondary coil Tc that is connected connecing of C phase load and holds mutually c and neutral line input, the number of taps of each secondary coil is consistent with the quantity of Voltage regulating relay, the tap of secondary coil Ta is connected in series to respectively the neutral end a1 of A phase load by the first contact of each Voltage regulating relay, the tap of secondary coil Tb is connected in series to respectively the neutral end b1 of B phase load by the second contact of each Voltage regulating relay, the tap of secondary coil Tc is connected in series to respectively the neutral end c1 of C phase load by the 3rd contact of each Voltage regulating relay, connecing between the neutral end c1 that holds mutually a and C phase load of A phase load, the neutral end a1 of A phase load holds between b mutually with connecing of B phase load, the neutral end b1 of B phase load holds between c with connecing of C phase load three contacts that are in series with respectively the corner connection relay mutually.
The present invention has overcome traditional energy-saving controller for street lamp can only step-down and the shortcoming that can not boost, a kind of threephase load voltage control circuit that can boost is provided, when line voltage is normal, be linked into by the different taps by the secondary coil secondary voltage that load reduces the load two ends, reach energy-conservation purpose, and, when electrical network is low, can improve load voltage, the normal operation of proof load.The present invention is mainly used in the occasion that voltage ripple of power network is larger, or to voltage request higher occasion.
As preferably, the connect end and connecing of C phase load mutually that connect end, B phase load mutually of A phase load hold master switch QF by control the three-phase break-make simultaneously to be connected A phase incoming end, B phase incoming end and the C phase incoming end of three-phase alternating current mutually.Master switch QF can be used as the master switch of whole circuit, is responsible for being switched on or switched off the connection of load and electric power system.
As preferably, also comprise light sensor, described light sensation transducer is electrically connected to one of them input of PLC controller.The PLC controller can be according to the feedback information of the light sensation transducer received, and the control load lamp produces different brightness or carries out switching manipulation.
As preferably, also comprise voltage sensor, described voltage sensor is electrically connected to one of them input of PLC controller.The PLC controller can be according to the feedback information of the voltage sensor received, and the control load lamp produces different brightness or carries out switching manipulation.
As preferably, also comprise the driving transducer, described driving transducer is electrically connected to one of them input of PLC controller.The PLC controller can be according to the feedback information of the driving transducer received, and the control load lamp produces different brightness or carries out switching manipulation.
The invention has the beneficial effects as follows: not only can be when line voltage is normal, reach energy-conservation purpose by reducing the high-voltage gas discharging light both end voltage, also can be when line voltage be low, rising high-voltage gas discharging light both end voltage, normally start high-voltage gas discharging light or increase the lumen of high-voltage gas discharging light.
The accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of main circuit of the present invention;
Fig. 2 is the circuit diagram of PLC controller part of the present invention.
In figure, U1-PLC controller, L1-A phase load, the L2-B phase load, the L3-C phase load, KM1-the first Voltage regulating relay, KM2-the second Voltage regulating relay, KM3-the 3rd Voltage regulating relay, KM4-the 4th Voltage regulating relay, the KM5-star is succeeded electrical equipment, KM6-corner connection relay, A-A phase incoming end, B-B phase incoming end, C-C phase incoming end, N-neutral line input, connecing mutually of a-A phase load held, connecing mutually of b-B phase load held, and connecing mutually of c-C phase load held, the neutral end of a1-A phase load, the neutral end of b1-B phase load, the neutral end of c1-C phase load.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of load control circuit based on autotransformer, comprise control circuit and regulating circuit.Control circuit comprises PLC controller U1 and 6 relays, as shown in Figure 2, relay comprises corner connection relay K M6 and five Voltage regulating relay---the first Voltage regulating relay KM1, the second Voltage regulating relay KM2, the 3rd Voltage regulating relay KM3, the 4th Voltage regulating relay KM4 and the 5th Voltage regulating relay KM5, each relay all has control coil and the first contact, the second contact and the 3rd contact.PLC controller U1 is provided with two power ends, 3 inputs and 6 outputs, two power ends of PLC controller U1 connect respectively A phase input and neutral line input N, 6 outputs of PLC controller are respectively by corner connection relay K M6, the first Voltage regulating relay KM1, the second Voltage regulating relay KM2, the 3rd Voltage regulating relay KM3, the control coil of the 4th Voltage regulating relay KM4 and the 5th Voltage regulating relay KM5 is connected to neutral line input N, 3 inputs connect respectively the light sensation transducer, driving transducer and voltage sensor, PLC controller U1 can be according to the feedback information of each transducer received, the control load lamp produces different brightness or carries out switching manipulation.
As shown in Figure 1, regulating circuit comprises load and coupling transformer, and load comprises A phase load L1, B phase load L2 and C phase load L3, and A phase load L1, B phase load L2 and C phase load L3 can be high-voltage gas discharging lights, can be also other lighting loads, can be also non-lighting load.The connecing of A phase load held between the neutral end c1 of a and C phase load mutually, the neutral end a1 of A phase load and B phase load connect hold mutually between b, neutral end b1 and the connecing of C phase load of B phase load hold between c three contacts that are in series with respectively corner connection relay K M6 mutually.When contact KM6_1, the KM6_2 of corner connection relay K M6 and KM6_3 are all closed, threephase load is with the form access electrical network of corner connection, the line voltage that the voltage at every phase load two ends is electrical network, now require each holding contact off-state of the first Voltage regulating relay KM1, the second Voltage regulating relay KM2, the 3rd Voltage regulating relay KM3, the 4th Voltage regulating relay KM4 and the 5th Voltage regulating relay KM5.
3-phase autotransformer is provided with three secondary coils that contain five taps, be respectively secondary coil Ta, secondary coil Tb and secondary coil Tc, secondary coil Ta two ends connect respectively A phase input and neutral line input, four taps of Ta are respectively by the first contact KM1_1 of the first Voltage regulating relay KM1, the first contact KM2_1 of the second Voltage regulating relay KM2, the first contact KM3_1 of the 3rd Voltage regulating relay KM3, the first contact KM4_1 of the 4th Voltage regulating relay KM4, the first contact KM5_1 of the 5th Voltage regulating relay KM5 is connected to connecing of A phase load and holds mutually a, secondary coil Tb two ends connect respectively B phase input and neutral line input, four taps of Tb are respectively by the second contact KM1_2 of the first Voltage regulating relay KM1, the second contact KM2_2 of the second Voltage regulating relay KM2, the second contact KM3_2 of the 3rd Voltage regulating relay KM3, the second contact KM4_2 of the 4th Voltage regulating relay KM4, the second contact KM5_2 of the 5th Voltage regulating relay KM5 is connected to connecing of B phase load and holds mutually b, secondary coil Tc two ends connect respectively C phase input and neutral line input, four taps of Tc are respectively by the 3rd contact KM1_3 of the first Voltage regulating relay KM1, the first contact KM2_3 of the second Voltage regulating relay KM2, the first contact KM3_3 of the 3rd Voltage regulating relay KM3, the first contact KM4_3 of the 4th Voltage regulating relay KM4, the 3rd contact KM5_3 of the 5th Voltage regulating relay KM5 is connected to connecing of C phase load and holds mutually c.Each different tap has different secondary voltages, therefore by different tap access loads, and voltage that also just can the control load two ends.These five groups of switches can only have one group of switch closure, and when having one group of switch closed, other switches will be in off-state.Therefore, in controller, facing to four groups of control switchs, realize blocking function,, when one group of switch is closed, other switches can't be closed.
During use, when load is high-voltage gas discharging light, connected mode by transformation load or select different secondary coil taps, not only can be when line voltage be normal, reach energy-conservation purpose by reducing the high-voltage gas discharging light both end voltage, also can be when line voltage be low, rising high-voltage gas discharging light both end voltage, normally start high-voltage gas discharging light or increase the lumen of high-voltage gas discharging light.Equally, also be applicable to other loads.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposed according to the present invention, and any change of doing on the technical scheme basis, within all falling into protection scope of the present invention.
Claims (5)
1. the threephase load control circuit that can boost, it is characterized in that: comprise control circuit and regulating circuit, described control circuit comprises PLC controller and several relays, relay comprises a corner connection relay and several Voltage regulating relay, each relay all comprises control coil and the first contact, the second contact and the 3rd contact, described PLC controller is provided with two power ends, several inputs and several outputs, two power ends of PLC controller connect respectively A phase incoming end and neutral line input, each output of PLC controller is connected to neutral line input by the control coil of corner connection relay Voltage regulating relay respectively,
Described regulating circuit comprises load and coupling transformer, described load comprises the A phase load, B phase load and C phase load, connecing between the neutral end c1 that holds mutually a and C phase load of A phase load, the neutral end a1 of A phase load holds between b mutually with connecing of B phase load, the neutral end b1 of B phase load holds between c with connecing of C phase load three contacts that are in series with respectively the corner connection relay mutually, described 3-phase autotransformer is provided with three secondary coils that contain several taps, be respectively the secondary coil Ta that holds mutually a and neutral line input that connects that connects the A phase load, connect secondary coil Tb that connecing of B phase load hold b and neutral line input mutually and the secondary coil Tc that is connected connecing of C phase load and holds mutually c and neutral line input, the number of taps of each secondary coil is consistent with the quantity of Voltage regulating relay, the tap of secondary coil Ta is connected in series to respectively the neutral end a1 of A phase load by the first contact of each Voltage regulating relay, the tap of secondary coil Tb is connected in series to respectively the neutral end b1 of B phase load by the second contact of each Voltage regulating relay, the tap of secondary coil Tc is connected in series to respectively the neutral end c1 of C phase load by the 3rd contact of each Voltage regulating relay.
2. the threephase load control circuit that can boost according to claim 1 is characterized in that: the connect end and connecing of C phase load mutually that connect end, B phase load mutually of A phase load hold master switch QF by control the three-phase break-make simultaneously to be connected A phase incoming end, B phase incoming end and the C phase incoming end of three-phase alternating current mutually.
3. the threephase load control circuit that can boost according to claim 1, it is characterized in that: also comprise light sensor, described light sensation transducer is electrically connected to one of them input of PLC controller.
4. the threephase load control circuit that can boost according to claim 1, it is characterized in that: also comprise voltage sensor, described voltage sensor is electrically connected to one of them input of PLC controller.
5. the threephase load control circuit that can boost according to claim 1, it is characterized in that: also comprise the driving transducer, described driving transducer is electrically connected to one of them input of PLC controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310355424.5A CN103476192B (en) | 2013-08-15 | 2013-08-15 | Three-phase load control circuit capable of boosting voltage |
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| CN201310355424.5A CN103476192B (en) | 2013-08-15 | 2013-08-15 | Three-phase load control circuit capable of boosting voltage |
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| CN103476192A true CN103476192A (en) | 2013-12-25 |
| CN103476192B CN103476192B (en) | 2015-04-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486897A (en) * | 2014-11-19 | 2015-04-01 | 宋宏伟 | Voltage regulation control device for inductive ballast |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61182116A (en) * | 1985-02-06 | 1986-08-14 | Nippon Electric Ind Co Ltd | 3-phase automatic voltage controller |
| US6046549A (en) * | 1997-09-29 | 2000-04-04 | U.S. Energy, Inc. | Energy saving lighting controller |
| CN101384118A (en) * | 2008-10-18 | 2009-03-11 | 六安新宇节能科技有限公司 | Intelligent road lamp controller |
| CN201995161U (en) * | 2010-12-03 | 2011-09-28 | 六安新宇节能科技有限公司 | Intelligent automatic energy-saving controller for three-phase streetlamps |
| CN203399383U (en) * | 2013-08-15 | 2014-01-15 | 杭州碧创科技有限公司 | Three-phase load control circuit capable of boosting voltage |
-
2013
- 2013-08-15 CN CN201310355424.5A patent/CN103476192B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61182116A (en) * | 1985-02-06 | 1986-08-14 | Nippon Electric Ind Co Ltd | 3-phase automatic voltage controller |
| US6046549A (en) * | 1997-09-29 | 2000-04-04 | U.S. Energy, Inc. | Energy saving lighting controller |
| CN101384118A (en) * | 2008-10-18 | 2009-03-11 | 六安新宇节能科技有限公司 | Intelligent road lamp controller |
| CN201995161U (en) * | 2010-12-03 | 2011-09-28 | 六安新宇节能科技有限公司 | Intelligent automatic energy-saving controller for three-phase streetlamps |
| CN203399383U (en) * | 2013-08-15 | 2014-01-15 | 杭州碧创科技有限公司 | Three-phase load control circuit capable of boosting voltage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486897A (en) * | 2014-11-19 | 2015-04-01 | 宋宏伟 | Voltage regulation control device for inductive ballast |
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