CN106803673A - Single phase distribution circuit automatic regulating voltage method of the no-flashy-flow without electric arc gear shift - Google Patents
Single phase distribution circuit automatic regulating voltage method of the no-flashy-flow without electric arc gear shift Download PDFInfo
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- CN106803673A CN106803673A CN201510837103.8A CN201510837103A CN106803673A CN 106803673 A CN106803673 A CN 106803673A CN 201510837103 A CN201510837103 A CN 201510837103A CN 106803673 A CN106803673 A CN 106803673A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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Abstract
Single phase distribution circuit automatic regulating voltage method of the no-flashy-flow without electric arc gear shift,
It is characterized by：Single-phase autotransformer is accessed in a certain phase of distribution line input, access controller and single-phase load ratio bridging switch is gone back,
Overcome adjustable transformer in the market and easily cause the electric arc that shoves when a certain facies tract carries switching pressure regulation gear, easily to being impacted with electric loading or causing electrical equipment to restart, the phenomenon of high-power resistance reduction switching electric current influence need to be bridged, a kind of no-flashy-flow is realized, without electric arc single-phase voltage regulating gear switch.
Description
Technical field
The invention belongs to electrical engineering field, it is related to a kind of single phase distribution circuit automatic regulating voltage method, the method is applied to mesolow distribution line.
Background technology
With the development that China's urban and rural economies are built, the electric load of power distribution network is presented the situation of rapid growth, the particularly combination area of city and country, and household electrical appliance or a large amount of of farm equipment use, processing workshop, the substantial increase in business paving, cause power consumption to steeply rise, add part distribution line and arrange unreasonable, circuit is long, line footpath is meticulous, cause line impedance to increase, make distribution line posterior segment low voltage, have a strong impact on the production and operating activities and daily life of user.In addition, part distribution line load is larger with season or day-night change, low, rate of qualified voltage reduction when high when causing voltage influences the safe operation of power network.The present invention is for the too low problem of part distribution circuit electric voltage qualification rate, the single phase distribution circuit automatic regulating voltage method without electric arc gear shift using a kind of no-flashy-flow, the method is using the auto-transformer configuration in out-primary setting multi-tap pressure regulation gear, secondary coil series connection distribution line input/output terminal, when pressure regulation gear is switched, after armature winding first disconnects input voltage and self closure, switch pressure regulation gear again, realize no-flashy-flow, switch voltage regulation function without electric arc, voltage is adjusted to Eligibility requirements, meet electric power netting safe running requirement.Simultaneously, it is ensured that distribution line band can continuously power when carrying switching pressure regulation gear, not to being impacted with electric loading or causing electrical equipment to restart.
The content of the invention
The purpose of the present invention is a kind of no-flashy-flow of design, the single-phase automatic regulating voltage method of the distribution line without electric arc gear shift, to solve the part distribution line too high or too low problem of user terminal single-phase voltage.It is very big suitable for single-phase voltage undulating value, the very low or too high distribution line of a certain phase voltage in circuit posterior segment.The innovation point is to overcome adjustable transformer in the market easily to cause the electric arc that shoves when a certain facies tract carries switching pressure regulation gear, easily to being impacted with electric loading or causing electrical equipment to restart, the phenomenon of high-power resistance reduction switching electric current influence need to be bridged, a kind of no-flashy-flow is realized, without electric arc single-phase voltage regulating gear switch.
The object of the present invention is achieved like this：Single phase distribution circuit automatic regulating voltage method of the no-flashy-flow without electric arc gear shift, it is characterized by：Single-phase autotransformer is accessed in a certain phase of distribution line input, access controller and single-phase load ratio bridging switch is gone back, described single-phase autotransformer includes series connection output winding and voltage regulation coil in parallel；Its access way is：Voltage regulation coil in parallel is attempted by a certain phase input of distribution line as armature winding, with more than one tap changer gear；Series connection output winding is connected between a certain phase input/output terminal of distribution line as secondary windings, its extreme direction of the same name makes a certain phase output terminal voltage that needs are raised and lowered and connects according to self coupling induced voltage, self coupling connecting and disconnecting are carried out by shunting switch between voltage regulation coil in parallel and output winding of connecting, voltage regulation coil in parallel carries out self connection closure and forms loop by shunting switch, and the above two of shunting switch connects and composes interlocked relationship；Multiple tap changer gears of voltage regulation coil in parallel each correspond to and are serially connected with shunting switch and carry out connecting and disconnecting, and can only connect a tap gear every time, form interlocked relationship；The single-phase load ratio bridging switch, it is the multiple switch combination with interlock function, pass through shunting switch self coupling connecting and disconnecting between voltage regulation coil in parallel and corresponding series connection output winding, the voltage regulation coil that is in parallel self connects closure and forms loop by shunting switch, and two kinds connect and compose interlocking, voltage regulation coil tap changer gear in parallel is by shunting switch connecting and disconnecting, and synchronization can only connect one of tap gear, other tap gears disconnect, and form interlocking；The each group switch of shunting switch is respectively connected with correspondence and drives relay, by controller drive module output drive signal to corresponding driving relay, corresponding switch connection or disconnection is started by driving relay；The regulator controller includes microprocessor unit, single-phase voltage sampling module, single-phase voltage regulating drive module, wherein single-phase voltage sampling module is connected input single-phase voltage sample data with microprocessor input pin, single-phase voltage regulating drive module is connected output drive signal with microprocessor output pin, the embedded control software of specific implementation pressure regulation scheme is solidified with microprocessor, is received and pressure regulation driving operation for controlling single-phase voltage to sample.Controller sets single-phase voltage sampling, further according to single-phase voltage sample, desired voltage is obtained in the tap of voltage regulation coil in parallel by controller and single-phase load ratio bridging switch.
Controller pressure regulation software flow is：" beginning " enters " sampling single-phase voltage " afterwards, subsequently into " whether the phase voltage is more than reference voltage permission upper limit difference ", it is to be directly entered " the selected pressure regulation gear closest to reference voltage ", otherwise into " whether the phase voltage is less than reference voltage permission lower limit difference "
It is to be directly entered " the selected pressure regulation gear closest to reference voltage ", otherwise the phase voltage allows upper limit difference and allows lower limit difference more than reference voltage less than reference voltage, then return to " sampling single-phase voltage ",
Into after " the selected pressure regulation gear closest to reference voltage ", enter back into " hair drive signal gives single-phase voltage regulating drive module; disconnect the connecting valve between voltage regulation coil in parallel and output winding of connecting ", " hair drive signal gives single-phase voltage regulating drive module; connects voltage regulation coil connecting to neutral in parallel and switchs to be formed without foreign voltage input closed-loop path; constitutes current transformer structure " is entered back into, then, into " hair drive signal gives single-phase voltage regulating drive module
,
Disconnect the pressure regulation gear of parallel single-phase voltage regulation coil connection originally ", into " hair drive signal gives single-phase voltage regulating drive module
,
Connect the newly selected pressure regulation gear of parallel single-phase voltage regulation coil "; enter and " send out drive signal and give single-phase voltage regulating drive module, disconnect voltage regulation coil connecting to neutral switch closures in parallel "; enter and " send out drive signal and give single-phase voltage regulating drive module, the connecting valve connected between voltage regulation coil in parallel and output winding of connecting, reconstitute auto-transformer configuration ", it is then back to " sampling single-phase voltage ".
The present invention for taking above measure, with following good effect：
1
Multi-tap gear is set using in distribution line input parallel connection voltage regulation coil, change no-load voltage ratio between voltage regulation coil in parallel and output winding of connecting by switching distribution line input parallel connection voltage regulation coil gear, produced self coupling induced voltage change is superimposed to form distribution line output end voltage with distribution line input terminal voltage, realizes being adjusted by the gear in distribution line output end the purpose of voltage.Because transformer is in the case where equal-wattage is transmitted, if input terminal voltage is higher, electric current is smaller, therefore sets the tap gear of voltage regulation coil in parallel in distribution line input, is shoved generation without transition during switching.
2
, auto-transformer is using a kind of unique structure：By the switch combination with interlock function, realize voltage regulation coil in parallel and output winding of connecting it is separated when, voltage regulation coil in parallel self is closed and forms loop, constitute current transformer structure, at this moment, voltage regulation coil in parallel is in short-circuit condition, and disconnected with distribution line input, without foreign voltage input, it is equivalent to Current Transformer Secondary side, tap gear switch is carried out to series voltage-regulating coil in this case, will not be shoved toward distribution line injection or cause electric arc, suppress plus that can be shoved to the electric current of residual in voltage regulation coil in parallel electric capacity in parallel, so as to realize the Arc-free tap gear switch of no-flashy-flow.Make auto-transformer during pressure regulation gear switch is carried out under current transformer structure state, the electric arc that shoves that can effectively produced by cancellation band voltage adjustment of on-load, the infringement of tapping switch contact is reduced, extends switch on and off service life, the work of automatic voltage regulator is become more stable reliability.
3
, series connection output winding be connected between distribution line input and output, when current transformer structure is constituted, distribution line keeps straight-through, flow only through line current, produced without self coupling induced voltage, equivalent to current transformer primary side, voltage output is held essentially constant with input, and the electrical load operation for connecting below is unaffected.Can continuously be powered when ensureing that distribution line band carries switching pressure regulation gear, not to being impacted with electric loading or causing electrical equipment to restart.
In conjunction with drawings and Examples, the present invention is described in further detail below.
Brief description of the drawings
Accompanying drawing
1
It is general function structure chart of the invention；
Accompanying drawing
2
It is controller architecture functional-block diagram；
Accompanying drawing
3
It is controller pressure regulation software flow pattern；
Accompanying drawing
4
It is single-phase voltage sample circuit figure；
Accompanying drawing
5
Single-phase voltage regulating drive module circuit diagram；
Accompanying drawing
6
It is controller pressure regulation software flow pattern.
Specific embodiment
Accompanying drawing
1
It is general function structure chart of the invention.
Below in conjunction with the accompanying drawings
1
Function to the single-phase automatic voltage regulator of distribution line is described in further detail.This pressure regulator includes single-phase autotransformer, single-phase load ratio bridging switch and the part of voltage regulator controllers three.Wherein, the single-phase autotransformer belongs to a kind of self coupling series voltage-regulating transformer, is made up of voltage regulation coil in parallel, series connection output winding, voltage regulation coil in parallel is the public winding of auto-transformer, transformer inputs are attempted by as armature winding, multiple tap can be set, this example is
3
The coil of individual tap, by the load ratio bridging switch with interlock function
K1A
、
K2A
、
K3A
Connect respectively
3
A gear in individual tap gear.Series connection output winding is connected between a certain phase input and output of distribution line as secondary windings, produces self coupling induced voltage, when series connection output winding Same Name of Ends presses voltage rising direction concatenation, with boost function, when being concatenated by voltage reduction direction, with buck functionality.Load ratio bridging switch
K1A
、
K2A
、
K3A
During the different gears of connection voltage regulation coil in parallel, the no-load voltage ratio between voltage regulation coil in parallel and output winding of connecting can be made to produce change, the produced self coupling induced voltage and distribution line phase input voltage connects to form different output end voltages, reaches the distribution line phase output terminal by different gear booster tensions or reduces the purpose of voltage.For example, to connect
K1A
During the voltage regulation coil gear pressure regulation in parallel at place, first by interlock switch
K0A
By
1
End is got to
2
End, at this moment, voltage regulation coil in parallel is separated with output winding of connecting, voltage regulation coil in parallel is without external input voltage, self closure forms loop, constitutes current transformer structure, and voltage regulation coil in parallel is equivalent to Current Transformer Secondary side, in order to further reduce the issuable transition current of connection, it is connected in parallel with a capacitor in voltage regulation coil in parallel
CA
, harmonic carcellation can be played a part of and shoved.At this moment, the series connection output winding being connected between the distribution line phase input and output does not produce self coupling voltage, distribution line this mutually keep straight-through, flow only through line current, equivalent to current transformer primary side, distribution line phase voltage output is held essentially constant with input, and the normal operation for loading below is not influenceed.Then, by the load ratio bridging switch with interlock function, control
K1A
Closure,
K2A
、
K3A
Disconnect, switching voltage regulation coil in parallel is arrived
K1A
The gear at place, realizes the adjustment of pressure regulation gear.After again, by interlock switch
K0A
By
2
Return at end
1
End, at this moment, recloses between voltage regulation coil in parallel and output winding of connecting, and self closed-loop path of voltage regulation coil in parallel disconnects, and reconstitutes auto-transformer configuration, new adjustment
K1A
Place parallel connection voltage regulation coil gear turns into armature winding, no-load voltage ratio between voltage regulation coil in parallel and output winding of connecting changes, self coupling induced voltage and the distribution line phase input terminal voltage produced by series connection output winding is superimposed and obtains the phase output terminal voltage, reaches the purpose by gear adjustment voltage.
Single-phase load ratio bridging switch, is the switch combination with interlock function, it is possible to use A.C. contactor switch, combination switch or other have and automatically control the power load switch that is switched on or switched off, below in conjunction with the accompanying drawings
1
Function to the single-phase load ratio bridging switch of distribution line is described in further detail.By taking single-phase shunting switch as an example,
K0A
It is that connection between voltage regulation coil in parallel and output winding of connecting and voltage regulation coil in parallel self close the switch combination for forming loop
,
This example parallel connection voltage regulation coil is set
3
Individual tap gear,
K1A
、
K2A
、
K3A
It is each tap gear connecting valve of correspondence, by corresponding relay driving break-make, relay drive circuit is connected with microprocessor single-phase voltage regulating drive module.For example, to switch being connected to
K1A
When the voltage regulation coil gear in parallel at place carries out pressure regulation, drive signal is sent to relay drive circuit by microprocessor single-phase voltage regulating drive module, first by interlock switch
K0A
By
1
End is got to
2
End, at this moment, voltage regulation coil in parallel is separated with output winding of connecting, self loop of the closure formation without foreign voltage of voltage regulation coil in parallel, constitute current transformer structure, equivalent to Current Transformer Secondary side, series connection output winding is connected between a certain phase input and output of distribution line, distribution line this mutually keep straight-through, line current is flowed only through, is produced without self coupling induced voltage, equivalent to current transformer primary side, this is mutually exported and is held essentially constant with input distribution circuit electric voltage, and the normal operation for loading below is not influenceed.Then, drive signal to relay drive circuit, control are sent by microprocessor single-phase voltage regulating drive module
K1A
Closure,
K2A
、
K3A
Disconnect, switching voltage regulation coil in parallel is arrived
K1A
The gear at place, realizes the adjustment of pressure regulation gear.After again, drive signal is sent to relay drive circuit by microprocessor single-phase voltage regulating drive module, by interlock switch
K0A
By
2
Return at end
1
End, at this moment, recloses between voltage regulation coil in parallel and output winding of connect, self closed-loop path of voltage regulation coil in parallel disconnects, and reconstitutes auto-transformer configuration, and will newly adjust
K1A
Place parallel connection voltage regulation coil gear, by the self coupling induced voltage produced by the Turn Ratio Changing between voltage regulation coil in parallel and output winding of connecting, reaches the purpose that the distribution line phase output terminal is adjusted voltage by the gear as primary winding.
Accompanying drawing
2
It is controller architecture functional-block diagram.Refer to the attached drawing
2
。
Described controller includes：Microprocessor unit, single-phase voltage sampling module, single-phase voltage regulating drive module, wherein single-phase voltage sampling module is connected with microprocessor input pin, single-phase voltage regulating drive module is connected with microprocessor output pin, the embedded control software of specific implementation pressure regulation scheme is solidified with microprocessor, is driven with pressure regulation for controlling single-phase voltage data sampling to receive.
Below in conjunction with accompanying drawing
2
And accompanying drawing
3
, the function of controller is described in detail in detail.Single-phase voltage sampling module by voltage analog input block,
A/D
Converting unit is constituted,
Through the voltage transformer translation circuit scaling transformation of voltage analog input block into low voltage signal, arranged into voltage signal amplifying circuit turns into normal low voltage signal to single-phase voltage, via
A/D
Change-over circuit becomes data signal and supplies microprocessor samples.Single-phase voltage regulating drive module is used to for the pressure regulation drive signal that microprocessor is exported to carry out power amplification, the corresponding whole shunting switch combinations of drive circuit, power amplification is carried out by by drive signal, each switch motion of single-phase load ratio bridging switch is driven by relay correspondence.Its workflow is：Micro processor loop sampling single-phase voltage, sampled value is 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.If single-phase sampled voltage exceedes the upper limit difference that reference voltage is allowed,Or the lower limit difference allowed less than reference voltage,Then select parallel connection voltage regulation coil voltage regulation result closest to the pressure regulation gear of reference voltage,Then Regulation Control operation is performed,Microprocessor first sends out drive signal through single-phase voltage regulating drive module power amplification,Relay is driven to disconnect the connecting valve between voltage regulation coil in parallel and output winding of connecting,Then hair drive signal is through power amplification,Relay is driven to form without foreign voltage input circuit the connecting to neutral switch closure of voltage regulation coil in parallel,Constitute current transformer structure,Then hair drive signal is through power amplification,Relay is driven to disconnect the pressure regulation gear of voltage regulation coil in parallel connection originally,Drive signal is sent out again through power amplification,Relay is driven to connect the newly selected pressure regulation gear of voltage regulation coil in parallel,Reach pressure regulation gear switch purpose.Then hair drive signal drives relay to disconnect the connecting to neutral switching circuitry of voltage regulation coil in parallel through power amplification, recloses the connection between voltage regulation coil in parallel and output winding of connecting, and reconstitutes auto-transformer configuration, realizes the adjustment of pressure regulation gear.
Single-phase autotransformer, belongs to a kind of self coupling series voltage-regulating transformer, and the transformer is constituted using a kind of such structure per by each independent voltage regulation coil in parallel, series connection output winding.Wherein, voltage regulation coil in parallel is the public winding of auto-transformer, is attempted by transformer inputs as armature winding, produces alternating electromagnetic field, and voltage regulation coil in parallel is a coil for multiple tap gears, and pressure regulation is carried out by the different gears for switching the coil.Series connection output winding is connected between distribution line input/output terminal as secondary windings, produces self coupling induced voltage, according to the difference of series connection output winding extreme direction of the same name, can heighten or turn down output end voltage.The switch combination of all pressure regulation operations, it is arranged at voltage regulation coil in parallel, series connection output winding is without switch combination, a series of by automatic control switch combination switch on and off action, switching voltage regulation coil difference tap gear in parallel, the no-load voltage ratio between voltage regulation coil in parallel and output winding of connecting is produced change, reach the purpose that a certain phase output terminal of distribution line was lifted or reduced voltage by different gears.Single-phase autotransformer is using a kind of unique structure：Realize that self coupling is connected and disconnection between voltage regulation coil in parallel and output winding of connecting by the switch combination with interlock function, and when self coupling disconnects between voltage regulation coil in parallel and output winding of connecting, automatic self closure of voltage regulation coil in parallel forms loop, when self coupling is connected between voltage regulation coil in parallel and output winding of connecting, voltage regulation coil closed-loop path in parallel disconnects automatically.After using a kind of such structure, when to carry out pressure regulation to a certain phase of distribution line, the self coupling connection between voltage regulation coil in parallel and output winding of connecting first is disconnected, at this moment, voltage regulation coil in parallel disconnects with distribution line input, and self closure forms loop, constitutes current transformer.Voltage regulation coil in parallel is in the near short circuit state of no-voltage input, equivalent to Current Transformer Secondary side, series connection output winding is produced without self coupling induced voltage, distribution line phase input/output terminal holding is straight-through, flows only through line current, and voltage output is held essentially constant, Voltage Drop or flickering will not be produced, be not in shove and electric arc, influence is not produced on the load behind the phase output terminal, equivalent to current transformer primary side.So, voltage regulation coil in parallel is disconnecting in the case that self coupling is connected by constituting current transformer structure, and the voltage stabilization and no-flashy-flow for maintaining the distribution phase output terminal are produced without electric arc.Then, by the load ratio bridging switch difference contact with interlock function, switching voltage regulation coil tap gear in parallel realizes the adjustment of the phase voltage gear, handoff procedure is in the closure state without external input voltage due to voltage regulation coil in parallel, does not produce shoving and electric arc for influence distribution output end.After the completion of switching action, self coupling connection is reclosed between voltage regulation coil in parallel and output winding of connecting, self closed-loop path of voltage regulation coil in parallel simultaneously switches off, again auto-transformer configuration is turned into, at this moment, voltage regulation coil in parallel turns into primary winding by the tap gear of new adjustment, and the self coupling induced voltage produced by series connection output winding is reached the distribution line phase output terminal by different gear booster tensions or reduced the purpose of voltage by the Turn Ratio Changing after adjustment.Single-phase load ratio bridging switch, it is the switch combination with interlock function, can be switched using A.C. contactor, combination switch or other have and automatically control the power load switch that is switched on or switched off, when connecting disconnection for the self coupling between voltage regulation coil in parallel and output winding of connecting, voltage regulation coil in parallel self is closed and forms loop, constitutes current transformer structure；For when self coupling connection recovers to connect between voltage regulation coil in parallel and output winding of connecting, self closed-loop path of voltage regulation coil in parallel to disconnect, and constitutes auto-transformer configuration；For constituting during current transformer structure, different taps are switched on or switched off in self closed-loop path of voltage regulation coil in parallel, realize the adjustment of voltage gear.The each group switch of shunting switch is respectively connected with correspondence and drives relay, by controller drive module output drive signal to corresponding driving relay, corresponding switch connection or disconnection is started by driving relay.The regulator controller is constituted using single chip machine controlling circuit, including：Microprocessor unit, single-phase voltage sampling module, single-phase voltage regulating drive module, wherein：Single-phase voltage sampling module is connected with microprocessor input pin, and single-phase voltage numerical value of sampling, single-phase voltage regulating drive module is connected with microprocessor output pin, output single-phase pressure regulation drive signal.The embedded control software of specific implementation pressure regulation scheme is solidified with microprocessor, is received and pressure regulation operation for controlling single-phase voltage to sample.Microprocessor sequentially circulating sampling single-phase voltage, a certain reference voltage value with setting compares, if the phase sampler voltage is more than reference voltage and more than permission upper limit difference range, then send control command, single-phase load ratio bridging switch is driven to act step-down gear of the switching to the voltage regulation coil that should be in parallel by single-phase voltage regulating drive module drive control, the no-load voltage ratio being in parallel between voltage regulation coil and output winding of connecting is diminished, reach the purpose for reducing the phase voltage；If the phase sampler voltage is less than reference voltage and more than permission lower limit difference range, then send control command, single-phase load ratio bridging switch is driven to act boosting gear of the switching to the voltage regulation coil that should be in parallel by single-phase voltage regulating drive module drive control, the no-load voltage ratio being in parallel between voltage regulation coil and output winding of connecting is become big, reach the purpose for lifting a certain phase voltage.
The single-phase shunting switch combination of the method drive control is sequentially turned-on and disconnects, and alternately constitutes auto-transformer configuration or current transformer structure, and switching voltage regulation coil difference tap in parallel reaches the purpose for adjusting a certain phase voltage.
Claims (2)
1. single phase distribution circuit automatic regulating voltage method of the no-flashy-flow without electric arc gear shift, it is characterized by：Single-phase autotransformer is accessed in a certain phase of distribution line input, access controller and single-phase load ratio bridging switch is gone back, described single-phase autotransformer includes series connection output winding and voltage regulation coil in parallel；Its access way is：Voltage regulation coil in parallel is attempted by a certain phase input of distribution line as armature winding, with more than one tap changer gear；Series connection output winding is connected between a certain phase input/output terminal of distribution line as secondary windings, its extreme direction of the same name makes a certain phase output terminal voltage that needs are raised and lowered and connects according to self coupling induced voltage, self coupling connecting and disconnecting are carried out by shunting switch between voltage regulation coil in parallel and output winding of connecting, voltage regulation coil in parallel carries out self connection closure and forms loop by shunting switch, and the above two of shunting switch connects and composes interlocked relationship；Multiple tap changer gears of voltage regulation coil in parallel each correspond to and are serially connected with shunting switch and carry out connecting and disconnecting, and can only connect a tap gear every time, form interlocked relationship；The single-phase load ratio bridging switch, it is the multiple switch combination with interlock function, pass through shunting switch self coupling connecting and disconnecting between voltage regulation coil in parallel and corresponding series connection output winding, the voltage regulation coil that is in parallel self connects closure and forms loop by shunting switch, and two kinds connect and compose interlocking, voltage regulation coil tap changer gear in parallel is by shunting switch connecting and disconnecting, and synchronization can only connect one of tap gear, other tap gears disconnect, and form interlocking；The each group switch of shunting switch is respectively connected with correspondence and drives relay, by controller drive module output drive signal to corresponding driving relay, corresponding switch connection or disconnection is started by driving relay；The regulator controller includes microprocessor unit, single-phase voltage sampling module, single-phase voltage regulating drive module, wherein single-phase voltage sampling module is connected input single-phase voltage sample data with microprocessor input pin, single-phase voltage regulating drive module is connected defeated signal with microprocessor output pin, the embedded control software of specific implementation pressure regulation scheme is solidified with microprocessor, is received and pressure regulation driving operation for controlling single-phase voltage to sample；Controller sets single-phase voltage sampling, further according to single-phase voltage sample, desired voltage is obtained in the tap of voltage regulation coil in parallel by controller and single-phase load ratio bridging switch.
2. single phase distribution circuit automatic regulating voltage method according to claim 1, it is characterized by：Controller pressure regulation software flow is：" beginning " enters " sampling single-phase voltage " afterwards, subsequently into " whether the phase voltage is more than reference voltage permission upper limit difference ", it is to be directly entered " the selected pressure regulation gear closest to reference voltage ", otherwise into " whether the phase voltage is less than reference voltage permission lower limit difference "
It is to be directly entered " the selected pressure regulation gear closest to reference voltage ",Otherwise the phase voltage allows upper limit difference and allows lower limit difference more than reference voltage less than reference voltage,Then return to " sampling single-phase voltage ",Into after " the selected pressure regulation gear closest to reference voltage ",Enter back into and " send out drive signal and give single-phase voltage regulating drive module,Disconnect the connecting valve between voltage regulation coil in parallel and output winding of connecting ",Enter back into and " send out drive signal and give single-phase voltage regulating drive module,Voltage regulation coil connecting to neutral in parallel is connected to switch to be formed without foreign voltage input closed-loop path,Constitute current transformer structure ",Then,Into " hair drive signal gives single-phase voltage regulating drive module,Disconnect the pressure regulation gear of parallel single-phase voltage regulation coil connection originally ",Into " hair drive signal gives single-phase voltage regulating drive module,Connect the newly selected pressure regulation gear of parallel single-phase voltage regulation coil ",Into " hair drive signal gives single-phase voltage regulating drive module,Disconnect voltage regulation coil connecting to neutral switch closures in parallel ",Into " hair drive signal gives single-phase voltage regulating drive module,The connecting valve connected between voltage regulation coil in parallel and output winding of connecting,Reconstitute auto-transformer configuration ",It is then back to " sampling single-phase voltage ".
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| CN201510837103.8A CN106803673A (en) | 2015-11-26 | 2015-11-26 | Single phase distribution circuit automatic regulating voltage method of the no-flashy-flow without electric arc gear shift |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336649A (en) * | 2020-06-16 | 2022-04-12 | 浙江南德电气有限公司 | Power distribution voltage reduction power-saving device and control method |
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