CN105743095A - Inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator - Google Patents
Inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator Download PDFInfo
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- CN105743095A CN105743095A CN201510837737.3A CN201510837737A CN105743095A CN 105743095 A CN105743095 A CN 105743095A CN 201510837737 A CN201510837737 A CN 201510837737A CN 105743095 A CN105743095 A CN 105743095A
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Abstract
The invention relates to an inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator. The inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator is characterized in that the inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator includes a three-phase self-coupling transformer, a controller and a three-phase on-load tap-changer. With the inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator adopted, no transition inrush current is generated in switching under the same power; inrush current arc generated by on-load voltage regulation can be effectively eliminated; damage to the contacts of the tap-changer can be decreased, the on-off service life of the tap-changer can be prolonged; and the work of the automatic voltage regulator can be more stable and reliable.
Description
Technical field
The invention belongs to electrical engineering field, relate to a kind of distribution line automatic voltage regulator, this pressure regulator is applicable to mesolow distribution line.
Background technology
Along with the development that China's urban and rural economies are built, the electric load of power distribution network presents a large amount of uses of the situation, the particularly combination area of city and country of quickly growth, household electrical appliance or farm equipment, add the substantial increase in workshop, business paving, causing that power consumption steeply rises, add that part distribution line is arranged unreasonable, circuit is long, wire diameter is meticulous, cause line impedance to increase, make distribution line posterior segment low voltage, have a strong impact on production and operating activities and the daily life of user.It addition, part distribution line load is relatively big with season or day-night change, low during height when causing voltage, rate of qualified voltage reduces, and affects the safe operation of electrical network.
Summary of the invention
It is an object of the invention to design a kind of no-flashy-flow, distribution line three-phase automatic voltage regulator without electric arc gear shift, to solve the part distribution line too high or too low problem of user side three-phase voltage, it is achieved no-flashy-flow, without electric arc pressure regulation gear switch.
The object of the present invention is achieved like this: a kind of no-flashy-flow, distribution line three-phase automatic voltage regulator without electric arc gear shift, it is characterized by: include 3-phase autotransformer, controller, three-phase load ratio bridging switch, described 3-phase autotransformer includes the series connection output winding of three-phase and the voltage regulation coil in parallel of three-phase；The voltage regulation coil that is respectively in parallel is attempted by each phase input of distribution line as autotransformer armature winding, has more than one tap changer gear；The output winding that is respectively in series is connected between distribution line input/output terminal as autotransformer secondary windings, its Same Name of Ends direction makes each phase output terminal voltage raise according to self coupling induced voltage or reduces to need and connect, the voltage regulation coil in parallel of each phase carries out self coupling connecting and disconnecting by shunting switch with connecting between output winding, the voltage regulation coil in parallel of each phase carries out oneself by shunting switch and connects Guan Bi formation loop, and the above two of shunting switch connects and composes interlocked relationship；The multiple tap changer gears all each correspondence of voltage regulation coil of being respectively in parallel is serially connected with shunting switch and carries out connecting and disconnecting, and can only connect a tap gear every time, forms interlocked relationship；Described three-phase load ratio bridging switch, for having multiple switch combinations of interlock function, the construction of switch of each phase is all identical and each independent, respectively it is in parallel between voltage regulation coil with corresponding series connection output winding by shunting switch self coupling connecting and disconnecting, this voltage regulation coil that is in parallel is connected Guan Bi by shunting switch oneself and is formed loop, and two kinds connect and compose interlocking, the voltage regulation coil tap changer gear that is respectively in parallel passes through shunting switch connecting and disconnecting, and synchronization can only connect one of them tap gear, other tap gears disconnect, and form interlocking；Each group switch of shunting switch is all respectively connected with corresponding driving relay, drives module output drive signal to corresponding driving relay by controller, by the switch connection or the disconnection that drive relay to start correspondence；Described regulator controller includes microprocessor unit, three-phase voltage sampling module, three phase voltage regulating driving module, wherein three-phase voltage sampling module is connected input three-phase voltage sampled data with microprocessor input pin, three phase voltage regulating drives module to be connected output drive signal with microprocessor output pin, it is solidified with the embedded Control software being embodied as pressure regulation scheme in microprocessor, is used for controlling three-phase voltage sampling and receives and pressure regulation driving operation.
Microprocessor adopts STM32F103.
Take the present invention of above measure, there is effect good as follows:
1. adopt the voltage regulation coil in parallel being attempted by distribution line input as armature winding, it is connected on the auto-transformer configuration as secondary windings of the series connection output winding between distribution line input/output terminal, voltage regulation coil in parallel arranges multi-tap gear, voltage regulation coil in parallel and no-load voltage ratio between output winding of connecting is changed by switching the tap gear of voltage regulation coil in parallel, produced self coupling induced voltage is made to change, formation distribution line output end voltage is superposed, it is achieved adjust the purpose of voltage at distribution line outfan by this gear with distribution line input terminal voltage.When transmitting equal-wattage, owing to transformer inputs voltage is higher, thus the electric current flowing through voltage regulation coil in parallel is less, therefore arranges the tap gear of voltage regulation coil in parallel at distribution line input, shoves without transition during switching.
2, autotransformer adopts the structure of a kind of uniqueness: by having the switch combination of interlock function, when realizing voltage regulation coil in parallel and output winding of connecting separated, voltage regulation coil oneself in parallel closes formation loop, constitute current transformer structure, at this moment, voltage regulation coil in parallel is in short-circuit condition, and disconnect with distribution line input, input without foreign voltage, it is equivalent to Current Transformer Secondary side, in this case series voltage-regulating coil is carried out tap gear switch, will not inject toward distribution line and shove or cause electric arc, the effect suppressing electric current to shove can be had plus the electric capacity in parallel at voltage regulation coil in parallel, thus such structure can realize the Arc-free tap changer gear switch of no-flashy-flow.Autotransformer is made to carry out under current transformer structure state during pressure regulation gear switch, effectively can be shoved produced by cancellation band voltage adjustment of on-load electric arc, reduce the infringement of tapping switch contact, extend switch on and off service life, make the work of automatic voltage regulator become more stable reliably.
3, series connection output winding is connected between distribution line input/output terminal, when carrying out pressure regulation gear switching operation, constituting current transformer structure, at this moment, series connection output winding produces without self coupling induced voltage, distribution line keeps straight-through, flow only through line current, be equivalent to current transformer primary side, in this case, distribution circuit electric voltage output is held essentially constant with input, and the electrical load connected below runs unaffected.Can power continuously when ensureing distribution line band load switching pressure regulation gear, not to impacting by electric loading or causing electrical equipment to restart.
In conjunction with drawings and Examples, the present invention is described in further detail below.
Accompanying drawing explanation
Accompanying drawing 1 is the general function structure chart of the present invention；
Accompanying drawing 2 is controller architecture functional-block diagram；
Accompanying drawing 3 is microprocessor unit circuit figure；
Accompanying drawing 4 is three-phase voltage sample circuit figure；
Accompanying drawing 5 three phase voltage regulating drives module circuit diagram；
Accompanying drawing 6 is controller pressure regulation software flow pattern.
Accompanying drawing 6 description of reference numerals:
1, whether A phase voltage allows upper limit difference more than reference voltage；
2, whether A phase voltage allows lower limit difference less than reference voltage；
3, the selected pressure regulation gear closest to reference voltage；
4, send out driving signal and drive module to A phase pressure regulation, disconnect voltage regulation coil in parallel and the connecting valve connected between output winding；
5, sending out driving signal and drive module to A phase pressure regulation, connection voltage regulation coil connecting to neutral switch in parallel is formed and inputs closed-loop path, composition current transformer structure without foreign voltage；
6, send out driving signal and drive module to A phase pressure regulation, disconnect A and be in parallel the pressure regulation gear that voltage regulation coil connected originally；
7, send out driving signal and drive module to A phase pressure regulation, connect A and be in parallel the newly selected pressure regulation gear of voltage regulation coil；
8, send out driving signal and drive module to A phase pressure regulation, disconnect voltage regulation coil connecting to neutral switch closures in parallel；
9, send out driving signal and drive module to A phase pressure regulation, connect voltage regulation coil in parallel and the connecting valve connected between output winding, reconstitute auto-transformer configuration；
10, whether B phase voltage allows upper limit difference more than reference voltage；
11, whether B phase voltage allows lower limit difference less than reference voltage；
12, the selected pressure regulation gear closest to reference voltage；
13, send out driving signal and drive module to B phase pressure regulation, disconnect voltage regulation coil in parallel and the connecting valve connected between output winding；
14, sending out driving signal and drive module to B phase pressure regulation, connection voltage regulation coil connecting to neutral switch in parallel is formed and inputs closed-loop path, composition current transformer structure without foreign voltage；
15, send out driving signal and drive module to B phase pressure regulation, disconnect B and be in parallel the pressure regulation gear that voltage regulation coil connected originally；
16, send out driving signal and drive module to B phase pressure regulation, connect B and be in parallel the newly selected pressure regulation gear of voltage regulation coil；
17, send out driving signal and drive module to B phase pressure regulation, disconnect voltage regulation coil connecting to neutral switch closures in parallel；
18, send out driving signal and drive module to B phase pressure regulation, connect voltage regulation coil in parallel and the connecting valve connected between output winding, reconstitute auto-transformer configuration；
19, whether C phase voltage allows upper limit difference more than reference voltage；
20, whether C phase voltage allows lower limit difference less than reference voltage；
21, the selected pressure regulation gear closest to reference voltage；
22, send out driving signal and drive module to C phase pressure regulation, disconnect voltage regulation coil in parallel and the connecting valve connected between output winding；
23, sending out driving signal and drive module to C phase pressure regulation, connection voltage regulation coil connecting to neutral switch in parallel is formed and inputs closed-loop path, composition current transformer structure without foreign voltage；
24, send out driving signal and drive module to C phase pressure regulation, disconnect C and be in parallel the pressure regulation gear that voltage regulation coil connected originally；
25, send out driving signal and drive module to C phase pressure regulation, connect C and be in parallel the newly selected pressure regulation gear of voltage regulation coil；
26, send out driving signal and drive module to C phase pressure regulation, disconnect voltage regulation coil connecting to neutral switch closures in parallel；
27, send out driving signal and drive module to C phase pressure regulation, connect voltage regulation coil in parallel and the connecting valve connected between output winding, reconstitute auto-transformer configuration.
Detailed description of the invention
The present invention is directed to the problem that part distribution circuit electric voltage qualification rate is too low, a kind of distribution line automatic voltage regulator of design, adopt the auto-transformer configuration that multi-tap pressure regulation gear, secondary coil series connection distribution line input/output terminal are set at out-primary, when switching pressure regulation gear, armature winding then switches pressure regulation gear after first disconnecting input voltage oneself's Guan Bi, it is achieved no-flashy-flow, without electric arc switching voltage regulation function, make Voltage Cortrol to Eligibility requirements, meet electric power netting safe running requirement.Simultaneously, it is ensured that can power continuously during distribution line band load switching pressure regulation gear, not to impacting by electric loading or causing electrical equipment to restart, it is adaptable to three-phase voltage undulating value is very big, the distribution line that three-phase line posterior segment voltage is very low or too high.Innovative point of the present invention is to overcome adjustable transformer in the market easily to cause, when band load switching pressure regulation gear, the electric arc that shoves, it is easy to impacting by electric loading or causing electrical equipment to restart, need to bridge high-power resistance and reduce the phenomenon of switching electric current impact.
Embodiment:
Accompanying drawing 1 is the general function structure chart of embodiments of the invention, with reference to accompanying drawing 1.
Below in conjunction with accompanying drawing 1, the function of distribution line three-phase automatic voltage regulator is described in further detail.This pressure regulator includes 3-phase autotransformer, three-phase load ratio bridging switch and voltage regulator controllers three part.Wherein, described 3-phase autotransformer belongs to a kind of self coupling series voltage-regulating transformator, and each by voltage regulation coil in parallel, series connection output winding composition, three-phase structure is identical with function.This example for autotransformer A facies unit describe in detail autotransformer function, B phase, C facies unit function identical with A phase.A is in parallel the public winding that voltage regulation coil is autotransformer, is attempted by distribution line input as primary winding, can arrange multiple tap gear, and this example arranges the coil of 3 taps, by having the load ratio bridging switch K of interlock function1A、K2A、K3AConnect a gear in 3 tap gears respectively.The A output winding that is in series is connected between distribution line A phase input and output as secondary windings, produce self coupling induced voltage, for boost pressure regulation time, series connection output winding Same Name of Ends is pressed voltage and is raised direction concatenation, during for blood pressure lowering pressure regulation, series connection output winding Same Name of Ends is pressed voltage and is reduced direction concatenation, load ratio bridging switch K1A、K2A、K3AConnect A be in parallel the different gear of voltage regulation coil time, A can be made to be in parallel voltage regulation coil and no-load voltage ratio that A is in series between output winding produces change, produced self coupling induced voltage forms different output end voltages from distribution line A phase input voltage overlapped in series, reaches distribution line A phase output terminal by different gear booster tensions or the purpose reducing voltage.Such as, K to be connected1AThe A at place be in parallel voltage regulation coil gear pressure regulation time, first by interlock switch K0A2 ends are got to by 1 end, at this moment, it is separated that A is in parallel voltage regulation coil with output winding of connecting, voltage regulation coil in parallel is without external input voltage, oneself's Guan Bi forms loop, constitutes current transformer structure, and voltage regulation coil in parallel is equivalent to Current Transformer Secondary side, in order to reduce the issuable transition current of connection further, it is connected in parallel with a capacitor C at the A voltage regulation coil that is in parallelA, harmonic carcellation and the effect shoved can be played.At this moment, the A being connected between the distribution line input and output output winding that is in series does not produce self coupling voltage, and distribution line keeps straight-through, flow only through line current, being equivalent to current transformer primary side, distribution circuit electric voltage output is held essentially constant with input, does not affect the properly functioning of load below.Then, by having the load ratio bridging switch of interlock function, control K1AGuan Bi, K2A、K3ADisconnecting, switching A is in parallel voltage regulation coil to K1AThe gear at place, it is achieved the adjustment of pressure regulation gear.After again, by interlock switch K0ABeing returned 1 end by 2 ends, at this moment, A is in parallel voltage regulation coil and A is in series between output winding and recloses, and voltage regulation coil oneself closed-loop path in parallel disconnects, and reconstitutes auto-transformer configuration, the new K adjusted1AParallel connection voltage regulation coil gear in place becomes armature winding, voltage regulation coil in parallel changes with the no-load voltage ratio connected between output winding, self coupling induced voltage produced by series connection output winding superposes with distribution line A phase input terminal voltage and obtains A phase output terminal voltage, reaches to adjust the purpose of voltage by this gear.
Three-phase load ratio bridging switch, it it is the switch combination with interlock function, the construction of switch of each phase is all identical and each independent, can use A.C. contactor switch, combination switch or other have and automatically control the power load switch being switched on or switched off, below in conjunction with accompanying drawing 1, the function of distribution line three-phase load ratio bridging switch is described in further detail.For A phase shunting switch, K0AFor being connected between voltage regulation coil in parallel with series connection output winding and voltage regulation coil oneself in parallel closes the switch combination in formation loop, this example A voltage regulation coil that is in parallel arranges 3 tap gears, K1A、K2A、K3AFor corresponding each tap gear connecting valve, by corresponding relay driving break-make, relay drive circuit drives module to be connected with microprocessor A phase pressure regulation.Such as, to switch and be connected to K1AThe A at place is in parallel voltage regulation coil gear when carrying out pressure regulation, microprocessor A phase pressure regulation drive module to send and drive signal to relay drive circuit, first by interlock switch K0A2 ends are got to by 1 end, at this moment, it is separated that A is in parallel voltage regulation coil with output winding of connecting, voltage regulation coil oneself in parallel closes and forms the loop without foreign voltage, constitute current transformer structure, be equivalent to Current Transformer Secondary side, the A output winding that is in series is connected between distribution line input and output, distribution line keeps straight-through, flow only through line current, produce without self coupling induced voltage, be equivalent to current transformer primary side, distribution circuit electric voltage output is held essentially constant with input, does not affect the properly functioning of load below.Then, microprocessor A phase pressure regulation drive module to send and drive signal to relay drive circuit, control K1AGuan Bi, K2A、K3ADisconnecting, switching A is in parallel voltage regulation coil to K1AThe gear at place, it is achieved the adjustment of pressure regulation gear.After again, microprocessor A phase pressure regulation drive module to send and drive signal to relay drive circuit, by interlock switch K0ABeing returned 1 end by 2 ends, at this moment, A is in parallel voltage regulation coil and A is in series between output winding and recloses, and voltage regulation coil oneself closed-loop path in parallel disconnects, and reconstitutes auto-transformer configuration the K that will newly adjust1APlace parallel connection voltage regulation coil gear as primary winding, self coupling induced voltage produced by voltage regulation coil and the Turn Ratio Changing connected between output winding in parallel, reach distribution line A phase output terminal and adjust the purpose of voltage by this gear.
Accompanying drawing 2 is embodiment controller architecture functional-block diagram.With reference to accompanying drawing 2.
Described controller includes: microprocessor unit, A phase voltage sampling module, B phase voltage sampling module, C phase voltage sampling module, A phase pressure regulation drives module, B phase pressure regulation drives module, C phase pressure regulation drives module, wherein A phase voltage sampling module, B phase voltage sampling module, C phase voltage sampling module structure function is identical, it is connected with microprocessor input pin respectively, A phase pressure regulation drives module, B phase pressure regulation drives module, C phase pressure regulation drives modular structure function identical, it is connected with microprocessor output pin, the embedded Control software being embodied as pressure regulation scheme it is solidified with in microprocessor, receive and pressure regulation driving for controlling three-phase voltage data sampling.
The function of controller is described in detail in detail for A phase Regulation Control in conjunction with accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5 below, and B phase, C phase Regulation Control function are identical with A phase.A phase voltage sampling module is made up of voltage analog input block, A/D converting unit, A phase voltage becomes low voltage signal through the voltage transformer translation circuit scaling transformation of voltage analog input block, enter the arrangement of voltage signal amplifying circuit and become normal low voltage signal, become digital signal for microprocessor samples via A/D change-over circuit.A phase pressure regulation drives module to drive signal to carry out power amplification for the pressure regulation exported by microprocessor, whole shunting switchs combination of drive circuit corresponding A phase, by driving signal is carried out power amplification, drive each switch motion of A phase load ratio bridging switch through relay correspondence.Its workflow is: micro processor loop sampling three-phase voltage, when sampling A phase voltage, by sampled value compared with the reference voltage of setting, if in reference voltage bound difference range, not sending out control command, continues circulating sampling three-phase voltage successively.nullIf A phase sampler voltage exceedes the upper limit difference that reference voltage allows，Or less than the lower limit difference that reference voltage allows，Then selected A is in parallel the voltage regulation coil voltage regulation result pressure regulation gear closest to reference voltage，Then Regulation Control operation is performed，Microprocessor is first sent out driving signal and is driven modular power to amplify through A phase pressure regulation，Relay is driven to disconnect the connecting valve that A is in parallel voltage regulation coil and A is in series between output winding，Then driving signal is sent out through power amplification，Drive relay A is in parallel voltage regulation coil connecting to neutral switch Guan Bi formed without foreign voltage input circuit，Constitute current transformer structure，Then driving signal is sent out through power amplification，Drive relay to disconnect A to be in parallel the pressure regulation gear that voltage regulation coil connected originally，Send out driving signal again through power amplification，Drive relay to connect A to be in parallel the newly selected pressure regulation gear of voltage regulation coil，Reach pressure regulation gear switch purpose.Then send out driving signal through power amplification, drive relay to disconnect A and be in parallel the connecting to neutral switching circuitry of voltage regulation coil, reclose the A connection being in parallel voltage regulation coil and connecting between output winding, reconstitute auto-transformer configuration, it is achieved the adjustment of pressure regulation gear.
Accompanying drawing 6 gives the controller pressure regulation software flow pattern of embodiment, can compile out source program according to this flow chart and implement the present invention.
Claims (2)
1. a no-flashy-flow, switch the distribution line three-phase automatic voltage regulator of pressure regulation gear without electric arc, it is characterized by: include 3-phase autotransformer, controller, three-phase load ratio bridging switch, described 3-phase autotransformer includes the series connection output winding of three-phase and the voltage regulation coil in parallel of three-phase；The voltage regulation coil that is respectively in parallel is attempted by each phase input of distribution line as autotransformer armature winding, has more than one tap changer gear；The output winding that is respectively in series is connected between distribution line input/output terminal as autotransformer secondary windings, its Same Name of Ends direction makes each phase output terminal voltage raise according to self coupling induced voltage or reduces to need and connect, the voltage regulation coil in parallel of each phase carries out self coupling connecting and disconnecting by shunting switch with connecting between output winding, the voltage regulation coil in parallel of each phase carries out oneself by shunting switch and connects Guan Bi formation loop, and the above two of shunting switch connects and composes interlocked relationship；The multiple tap changer gears all each correspondence of voltage regulation coil of being respectively in parallel is serially connected with shunting switch and carries out connecting and disconnecting, and can only connect a tap gear every time, forms interlocked relationship；Described three-phase load ratio bridging switch, for having multiple switch combinations of interlock function, the construction of switch of each phase is all identical and each independent, respectively it is in parallel between voltage regulation coil with corresponding series connection output winding by shunting switch self coupling connecting and disconnecting, this voltage regulation coil that is in parallel is connected Guan Bi by shunting switch oneself and is formed loop, and two kinds connect and compose interlocking, the voltage regulation coil tap changer gear that is respectively in parallel passes through shunting switch connecting and disconnecting, and synchronization can only connect one of them tap gear, other tap gears disconnect, and form interlocking；Each group switch of shunting switch is all respectively connected with corresponding driving relay, drives module output drive signal to corresponding driving relay by controller, by the switch connection or the disconnection that drive relay to start correspondence；Described regulator controller includes microprocessor unit, three-phase voltage sampling module, three phase voltage regulating driving module, wherein three-phase voltage sampling module is connected input three-phase voltage sampled data with microprocessor input pin, three phase voltage regulating drives module to be connected output drive signal with microprocessor output pin, it is solidified with the embedded Control software being embodied as pressure regulation scheme in microprocessor, is used for controlling three-phase voltage sampling and receives and pressure regulation driving operation.
2. distribution line three-phase automatic voltage regulator according to claim 1, is characterized by: microprocessor adopts STM32F103.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510837737.3A CN105743095A (en) | 2015-11-26 | 2015-11-26 | Inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510837737.3A CN105743095A (en) | 2015-11-26 | 2015-11-26 | Inrush current-free and arc shifting-free power distribution line three-phase automatic voltage regulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112653140A (en) * | 2020-12-17 | 2021-04-13 | 深圳供电局有限公司 | Power supply control method, device and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167739A (en) * | 2014-05-05 | 2014-11-26 | 华北电力大学 | Four-bridge arm thyristor switch voltage-regulating circuit and voltage-regulating method |
| CN104882891A (en) * | 2015-06-16 | 2015-09-02 | 江苏现代电力科技股份有限公司 | Low-voltage distribution voltage-regulation equipment |
| CN205195275U (en) * | 2015-11-26 | 2016-04-27 | 北海市深蓝科技发展有限责任公司 | Do not have and shove, have distribution lines three -phase pressuretrol that electric arc was shifted gears |
-
2015
- 2015-11-26 CN CN201510837737.3A patent/CN105743095A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167739A (en) * | 2014-05-05 | 2014-11-26 | 华北电力大学 | Four-bridge arm thyristor switch voltage-regulating circuit and voltage-regulating method |
| CN104882891A (en) * | 2015-06-16 | 2015-09-02 | 江苏现代电力科技股份有限公司 | Low-voltage distribution voltage-regulation equipment |
| CN205195275U (en) * | 2015-11-26 | 2016-04-27 | 北海市深蓝科技发展有限责任公司 | Do not have and shove, have distribution lines three -phase pressuretrol that electric arc was shifted gears |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112653140A (en) * | 2020-12-17 | 2021-04-13 | 深圳供电局有限公司 | Power supply control method, device and storage medium |
| CN112653140B (en) * | 2020-12-17 | 2023-05-02 | 深圳供电局有限公司 | Power supply control method, device and storage medium |
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