CN106159958A - The comprehensive lifting device of rural power grids low-voltage and method on a kind of post - Google Patents
The comprehensive lifting device of rural power grids low-voltage and method on a kind of post Download PDFInfo
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- CN106159958A CN106159958A CN201610156572.8A CN201610156572A CN106159958A CN 106159958 A CN106159958 A CN 106159958A CN 201610156572 A CN201610156572 A CN 201610156572A CN 106159958 A CN106159958 A CN 106159958A
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- voltage
- compensation
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- lifting device
- post
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Classifications
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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
-
- 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
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The present invention relates to a kind of comprehensive lifting device of rural power grids low-voltage and method on post, be installed in series on rural power grids transmission line of electricity, including sampling control module, voltage compensation module, reactive compensation module and protection system；Described voltage compensation module is for the output voltage of lifting device；Described reactive compensation module lagging reactive power in the real-time power factor compensation system according to system, improves power factor (PF)；Described sampling control module is for automatically gathering the voltage of installation place, current signal, and controls the voltage of device, power factor (PF) regulation；Described protection system is for when method dies barrier, giving the device reaction time and send alarm signal.Device is arranged on platform district electric wire roofbolt, and its controller obtains real-time voltage data from sampling unit, controller control the switching of transformator each gear catalyst, it is achieved voltage increase, it is ensured that device outlet voltage is stable between 190V～240V, it is achieved voltage stabilizing；Thyristor switchable capacitor realizes reactive-load compensation.
Description
Technical field
The present invention relates to electric power and technical field of automation, in particular, relate to rural power grids low-voltage on a kind of post and combine
Close lifting device and method.
Background technology
At present, in Rural Low-Voltage Power Network single-phase 220V system, inconsiderate and develop at a too fast speed during because building, there is part platform district
The problems such as supply lines route footpath is little, and radius of electricity supply is big, cause that local resident's line loss when power load peak is big, circuit pressure
Fall is big, and terminal voltage can use minimum voltage less than electrical equipment, has a strong impact on urban residents and produces and life, also affects the new agriculture of China
Village builds.
Present stage, for agriculture net platform region brownout problem, changed or increase transformator and cable wire footpath by large area
Mode scale of investment big, the cycle is long, operates performance difficulty；Limited by the mode compensation ability such as capacitance compensation, on-load voltage regulation,
DeGrain, there is the drawbacks such as potential safety hazard, it is impossible to fast and effeciently solve the low-voltage problem that current rural power grids generally exist.
Summary of the invention
In view of this, it is necessary to for the problems referred to above, it is provided that the comprehensive lifting device of rural power grids low-voltage and method on a kind of post,
Quickly realize voltage by the gear of D.C. contactor control low-power consumption special transformer effectively to regulate, auxiliarily pass through IGCT
Switched capacitor control technology etc. realizes power factor optimization, thus system solves what rural power grids low-voltage was formed in actual applications
Synthtic price index.
To achieve these goals, technical scheme is as follows:
The comprehensive lifting device of rural power grids low-voltage on a kind of post, is installed in series on rural power grids transmission line of electricity, including controlling of sampling
Module, voltage compensation module, reactive compensation module and protection system；
Described voltage compensation module is for the output voltage of lifting device；
Described reactive compensation module lagging reactive power in the real-time power factor compensation system according to system,
Improve power factor (PF)；
Described sampling control module is for automatically gathering the voltage of installation place, current signal, and controls the voltage of device, merit
Rate factor regulates；
Described protection system, for when breaking down, gives the device reaction time and sends alarm signal.
As preferably, described sampling control module includes sampling unit and controller；
Described sampling unit is for gathering current signal and device inlet wire side, the magnitude of voltage of outgoing line side of circuit, and will believe
Number pass to controller；
Described controller controls voltage compensation module, reactive compensation module and protection system work according to the signal sampled
Make.
As preferably, described voltage compensation module uses special transformer, and its iron core uses high magnetic conduction stalloy, described
Transformator is provided with some shelves, is respectively used to promote device output voltage in proportion.
As preferably, some gears of described transformator all connect D.C. contactor, is controlled in real time by sampled signal
D.C. contactor break-make processed, and then select the gear of transformator.
As preferably, described reactive compensation module uses the road of thyristor switchable capacitor compensation, including the crystalline substance of series connection
Brake tube string and electric capacity, described IGCT string includes two IGCTs of parallel connection, and two IGCT anodes of described parallel connection are contrary, institute
State IGCT and use zero cross fired.
As preferably, the road of described thyristor switchable capacitor compensation is additionally provided with warning excision switch, is breaking down
Or when being not detected by electric current, trigger described warning excision and switch off.
As preferably, described current signal is acquired by current transformer, and device is located at by described current transformer
Inlet wire side.
As preferably, the grid line of described device inlet wire side is additionally provided with disconnecting switch, described voltage compensation module with
Connect with grid line after one former change service entrance switch parallel connection.
Carry out, according to said apparatus, the method that low-voltage comprehensively promotes, comprise the following steps:
S1, voltage stabilizing, after device is installed on the line, disconnecting switch of closing, if without crossing stream or short circuit phenomenon, the most former limit inlet wire
Switch off, otherwise keep former limit service entrance switch to close；
S2, transformer gear control, inlet wire side that controller is gathered by device and outgoing line side virtual voltage size, and sentence
Disconnected switching is to the D.C. contactor of which gear；
S3, reactive power compensation system, controller detecting over current fault by current transformer, if there is over current fault, then controlling
Make former limit service entrance switch Guan Bi, and calculate circuit reactive power, when circuit reactive power is higher than 1Kvar, trigger IGCT and
Electric capacity carries out reactive-load compensation to circuit；
S4, fault-signal detect, the voltage of detection inlet wire side, if during the brownout of inlet wire side, close former limit inlet wire and open
Close；Detecting transformer temperature in real time, if temperature is higher than transformator rated temperature, controller controls former limit service entrance switch Guan Bi.
Compared with prior art, the beneficial effects of the present invention is: the present invention obtains real by controller from sample circuit
Time voltage data, by controller control transformator each gear catalyst switching, it is achieved voltage increase, it is ensured that device leading-out terminal electricity
Pressure terminal voltage is stable between 190V～240V, it is achieved voltage stabilizing；Thyristor switchable capacitor realizes reactive-load compensation, the present invention with
Terminal voltage is reference, by transformator lifting terminal voltage thus reach lifting load both end voltage purpose, simple economy,
Guarantee that the i.e. electric capacity both end voltage of device outlet voltage is between 190V-240V, it is achieved the effect of burning voltage；It is additionally provided with protection
System, protects system acting, gives the device reaction time and send alarm signal when device breaks down.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of the present invention；
Fig. 2 is the schematic diagram that the present invention is installed on electrical network；
Fig. 3 is the method flow diagram of the present invention；
Fig. 4 be apparatus of the present invention embodiment 2 in electrical schematic.
Detailed description of the invention
Below in conjunction with the accompanying drawings with embodiment to the comprehensive lifting device of rural power grids low-voltage and side on a kind of post of the present invention
Method is described further.
Embodiment 1
Figures 1 and 2 show that the comprehensive lifting device of rural power grids low-voltage on a kind of post, mend including sampling control module, voltage
Repay module, reactive compensation module and protection system；
Described voltage compensation module is for the output voltage of lifting device；
Described reactive compensation module lagging reactive power in the real-time power factor compensation system according to system,
Improve power factor (PF)；
Described sampling control module is for automatically gathering the voltage of installation place, current signal, and controls the voltage of device, merit
Rate factor regulates；
Described protection system, for when breaking down, gives the device reaction time and sends alarm signal.
As preferably, described sampling control module includes sampling unit and controller；
Described sampling unit is for gathering current signal and device inlet wire side, the magnitude of voltage of outgoing line side of circuit, and will believe
Number pass to controller；
Described controller controls voltage compensation module, reactive compensation module and protection system work according to the signal sampled
Make；Controller obtains sampled signal and compares with reference value, and whether control contactor switching, and then controls cutting of transformer gear
Change, put into size or the bypass transformator of gear by controlling transformator according to detection actual signal, guarantee device leading-out terminal
Voltage i.e. electric capacity both end voltage virtual value is between 190V～240V, it is achieved the effect of burning voltage.
As preferably, described reactive compensation module uses the road of thyristor switchable capacitor compensation, including the crystalline substance of series connection
Brake tube string and electric capacity, described IGCT string includes two IGCTs of parallel connection, and two IGCT anodes of described parallel connection are contrary；Institute
State IGCT and use zero cross fired, no-flashy-flow during switching capacitance, electrical network and capacitor will not be impacted impact.Device
Capacitor withouts waiting for electric discharge and completes to come into operation again, can put into electrical network more at once, carry after excising from electrical network
The high utilization ratio of equipment, also accelerates the response speed of device simultaneously.Fling-cut switch IGCT belongs to power electronic devices,
There is no mechanical contact, as contactless contactor, phenomenon of arc discharge will not be produced during disjunction electric capacity, burn catalyst and touch
Point and capacitor, therefore equipment dependability and life-span are guaranteed.
As preferably, described transformator is provided with some shelves, is respectively used to promote device output voltage in proportion；
In the present embodiment, in device, transformer primary side has third gear (can manually or automatically regulate, specifically can set) according to product needed:
100%Un, 115%Un, 120%Un (Un is system power supply side real-time voltage)；Wherein 100%Un shelves are to maintain terminal voltage not
Become；115%Un shelves are that original terminal voltage is promoted 15%, and 120%Un shelves are that terminal voltage is promoted 30%.Voltage compensation mould
The special transformer of block, its iron core uses high magnetic conduction stalloy, and magnetic flux density is low, and iron loss is little, and temperature characterisitic is stable；Coil
Using high-quality wire producing, electric current density is low, and copper loss is little.100% gear general 2～3 circle, winding wire footpath is thick and short；Dress
Put can hanging net operation for a long time, electric energy loss is low, voltage-regulation scope is big, and regulation stall is typically designed as 115% and 120% liang
Shelves, can be customized according to field working conditions, easy to operate, safeguard simple, and service life is long, coordinates with reactive compensation module and makes
With, there is the effect being obviously improved voltage；Actual application controls D.C. contactor break-make in real time by sampled signal, selects to become
The gear on the former limit of depressor, so that it is guaranteed that the terminal voltage after automatically controlling is stable in electrical equipment available voltage range.When device is examined
When measuring user's brownout, voltage compensation module is started working, the output voltage of lifting device, makes user's voltage reach equipment
Within the scope of normal work.
As preferably, some gears of described transformator all connect D.C. contactor, is controlled in real time by sampled signal
D.C. contactor break-make processed, and then select the gear of transformator.
As preferably, the road of described thyristor switchable capacitor compensation is additionally provided with warning excision switch K2, and event is occurring
When hindering or be not detected by electric current, trigger the described excision switch K2 that reports to the police and disconnect.
As preferably, described current signal is acquired by current transformer, and device is located at by described current transformer
Inlet wire side.
As preferably, the grid line of described device inlet wire side is additionally provided with disconnecting switch QS, described voltage compensation module
Connect with grid line L with after a switch K1 parallel connection.
Device is installed in series on rural power grids transmission line of electricity, can the most automatically gather the voltage at mount point, current signal,
Control target based on Control of Voltage, power factor regulation be auxiliary.When device detects user's brownout, voltage compensation mould
BOB(beginning of block) works, the output voltage of lifting device, makes user's voltage reach within the scope of equipment normally works；Device simultaneously
Reactive compensation module compensates branch road, the idle merit of perception in compensation system according to the power factor switching capacitance of system in real time
Rate, improves power factor, reduces loss and pressure drop that reactive power causes on the line, promotes user's voltage further.
In sum, the control method of the device of the present embodiment is as described in Figure 3, specific as follows:
S1, voltage stabilizing, after device is installed on the line, disconnecting switch of closing, if without crossing stream or short circuit phenomenon, the most former limit inlet wire
Switch off, otherwise keep former limit service entrance switch to close；
S2, transformer gear control, inlet wire side that controller is gathered by device and outgoing line side virtual voltage size, and sentence
Disconnected switching is to the D.C. contactor of which gear；
S3, reactive power compensation system, controller detecting over current fault by current transformer, if there is over current fault, then controlling
Make former limit service entrance switch Guan Bi, and calculate circuit reactive power, when circuit reactive power is higher than 1Kvar, trigger IGCT and
Electric capacity carries out reactive-load compensation to circuit；
S4, fault-signal detect, the voltage of detection inlet wire side, if during the brownout of inlet wire side, close former limit inlet wire and open
Close；Detecting transformer temperature in real time, if temperature is higher than transformator rated temperature, controller controls former limit service entrance switch Guan Bi.
Embodiment 2
Fig. 4 is a kind of embodiment of the electrical schematic of assembly of the invention, and wherein, described sample circuit includes that device enters
First sample circuit of line side and outgoing line side the second sample circuit, the input voltage that described first sample circuit gathers grid side is high
Low, described second sample circuit is for the voltage levels of harvester output, and described first sample circuit first passes through chopper
QF1 connection transformer former limit inlet wire side N2, is connected to former limit service entrance switch JC01 between the first sample circuit and the second sample circuit,
Described transformer secondary outgoing line side N1 is provided with by the first catalyst JC1 of inlet wire side N2 voltage increase 30%, by inlet wire side N2 electricity
Pressure promotes the second catalyst JC2 of 15%, and described second sample circuit is connected to the first catalyst JC1 and the second catalyst JC2；
Heretofore described electric capacity and thyristor module include first electric capacity C1 the second electric capacity C2 and IGCT SCR, described second electric capacity
C2 forms an electric capacity and IGCT string, described electric capacity and IGCT string and the first electric capacity C1 parallel connection with IGCT SCR after connecting after
Being connected to transformator two ends, described first electric capacity C1 connects has the second circuit breaker Q F2, described electric capacity and IGCT to be serially connected with the
Three circuit breaker Q F3；Described electric capacity and thyristor module are also in series with a spark gap FA.
Also include a controller and protection system (not shown), controller with sampled signal control real-time to device,
After guaranteeing lifting, voltage stabilization is in electrical equipment available voltage range；When protection system is used for breaking down, protects system acting, give
Give the device reaction time and send and at alarm signal, or current transformer, be not detected by electric current, sending alarm signal.
In the present embodiment, described first sample circuit is also associated with a current transformer TA, and described transformer secondary goes out
Line is surveyed and is also connected with transmission line of electricity N phase line, is provided with disconnecting switch QS between described device inlet wire side and N phase line.
Device after circuit installation, disconnecting switch QS of closing, first control former limit service entrance switch JC01, if without cross stream or
Person's short circuit phenomenon, then cut Voltage stabilizing module, i.e. JC01 and be disconnected at transformator N2 end, otherwise keeps JC01 normally off；
Then pass through sampling inlet wire, the line voltage distribution actual size of outgoing line side carries out transformer gear control: if voltage is relatively
Low, such as 160V～190V, then select Guan Bi the first circuit breaker Q F1, i.e. realize 100%Un shelves and control；Now according to inlet wire side
Voltage levels, then decide whether switching the first catalyst JC1, the second catalyst JC2, thus realize more high tap position liter
Pressure.Wherein, the first catalyst JC1 Guan Bi is then by inlet wire side voltage increase 30%Un gear, and the second catalyst JC2 Guan Bi then will be entered
Line side voltage increase 15%Un gear；If voltage is less than 30%Un, the most first put into the first catalyst JC1 fast lifting voltage, so
It is switched to 15%Un shelves that is second catalyst JC2 afterwards, it is achieved voltage stabilizing more accurately according to actual deciding whether.
Device sampling inlet wire side current signal, mainly detects over current fault, if there is overcurrent fault, and former limit inlet wire
Switch JC01 disconnects bypass transformator；Also have and calculate circuit reactive power exactly, when circuit reactive power is higher than 1kvar, touch
Send out IGCT SCR and put into the second capacitor C2, compensate circuit is idle；Furthermore it is possible to manual switching fixes the first electric capacity
C1 compensates transformator perception is idle.
Except overcurrent protection in error protection, also voltage and temperature protection etc..When the brownout of inlet wire side, the most right
Inlet wire side voltage increase 30%, but still can not meet user when normally working, for actual benefit, it is necessary to disconnect former limit inlet wire
Switch JC01 is to bypass transformator；Temperature protection, mainly for the temperature of transformator, detects transformer temperature in real time, when actual temperature
When degree is higher than transformator rated temperature, just disconnects former limit service entrance switch JC01 and bypass transformator；Spark gap FA is the most electric to circuit
Pressure carries out protecting.
In sum, device is arranged on platform district electric wire roofbolt, and its controller obtains real-time voltage data from sample circuit,
The switching of transformator each gear catalyst is controlled, it is achieved voltage increase, it is ensured that device outlet voltage terminal voltage by controller
Stable between 190V～240V, it is achieved voltage stabilizing；Thyristor switchable capacitor realizes reactive-load compensation.
The following is preferred example of the present invention, the most therefore limit protection scope of the present invention.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. the comprehensive lifting device of rural power grids low-voltage on post, is installed in series on rural power grids transmission line of electricity, it is characterised in that include
Sampling control module, voltage compensation module, reactive compensation module and protection system；
Described voltage compensation module is for the output voltage of lifting device；
Described reactive compensation module lagging reactive power in the real-time power factor compensation system according to system, improves
Power factor (PF)；
Described sampling control module for automatically gathering the voltage of installation place, current signal, and control the voltage of device, power because of
Element regulation；
Described protection system, for when breaking down, gives the device reaction time and sends alarm signal.
The comprehensive lifting device of rural power grids low-voltage on post the most according to claim 1, it is characterised in that described controlling of sampling mould
Block includes sampling unit and controller；
Described sampling unit is for gathering current signal and device inlet wire side, the magnitude of voltage of outgoing line side of circuit, and is passed by signal
Pass controller；
Described controller controls voltage compensation module, reactive compensation module and the work of protection system according to the signal sampled.
The comprehensive lifting device of rural power grids low-voltage on post the most according to claim 1, it is characterised in that described voltage compensation mould
Block uses special transformer, and its iron core uses high magnetic conduction stalloy, and described transformator is provided with some shelves, is respectively used to device defeated
Go out voltage scale to promote.
The comprehensive lifting device of rural power grids low-voltage on post the most according to claim 3, it is characterised in that if described transformator
Dry gear all connects D.C. contactor, is controlled D.C. contactor break-make by sampled signal in real time, and then selects transformator
Gear.
The comprehensive lifting device of rural power grids low-voltage on post the most according to claim 1, it is characterised in that described reactive-load compensation mould
Block uses the road of thyristor switchable capacitor compensation, and including IGCT string and the electric capacity of series connection, described IGCT string includes parallel connection
Two IGCTs, two IGCT anodes of described parallel connection are contrary, and described IGCT uses zero cross fired.
The comprehensive lifting device of rural power grids low-voltage on post the most according to claim 1, it is characterised in that described thuristor throw-in and throw-off
The road of capacitor compensation is additionally provided with warning excision switch, when breaking down or be not detected by electric current, triggers described excision of reporting to the police
Switch off.
The comprehensive lifting device of rural power grids low-voltage on post the most according to claim 1, it is characterised in that described current signal leads to
Overcurrent transformer is acquired, and device inlet wire side is located at by described current transformer.
The comprehensive lifting device of rural power grids low-voltage on post the most according to claim 1, it is characterised in that described device inlet wire side
Grid line on be additionally provided with disconnecting switch, described voltage compensation module is connected with grid line after a former change service entrance switch parallel connection.
9. carry out, according to the arbitrary described device of claim 1 to 8, the method that low-voltage comprehensively promotes, it is characterised in that include
Following steps:
S1, voltage stabilizing, after device is installed on the line, disconnecting switch of closing, if without crossing stream or short circuit phenomenon, the most former limit service entrance switch
Disconnect, otherwise keep former limit service entrance switch to close；
S2, transformer gear control, inlet wire side that controller gathers by device and outgoing line side virtual voltage size, and judge throwing
Switch to the D.C. contactor of which gear；
S3, reactive power compensation system, controller detecting over current fault by current transformer, if there is over current fault, then controlling former
Limit service entrance switch Guan Bi, and calculate circuit reactive power, when circuit reactive power is higher than 1Kvar, trigger IGCT and electric capacity
Circuit is carried out reactive-load compensation；
S4, fault-signal detect, the voltage of detection inlet wire side, if during the brownout of inlet wire side, close former limit service entrance switch；Real
Time detection transformer temperature, if temperature is higher than transformator rated temperature, controller controls former limit service entrance switch Guan Bi.
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| CN201610156572.8A CN106159958A (en) | 2016-03-18 | 2016-03-18 | The comprehensive lifting device of rural power grids low-voltage and method on a kind of post |
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| CN201610156572.8A CN106159958A (en) | 2016-03-18 | 2016-03-18 | The comprehensive lifting device of rural power grids low-voltage and method on a kind of post |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849105A (en) * | 2017-03-13 | 2017-06-13 | 南阳金冠智能开关有限公司 | Low-voltage distributing line intelligent regulating device |
| CN108767868A (en) * | 2018-06-14 | 2018-11-06 | 重庆明斯克电力建设工程有限责任公司 | Low-voltage circuit on-load voltage regulation compensation device |
| CN108803768A (en) * | 2018-06-14 | 2018-11-13 | 重庆明斯克电力建设工程有限责任公司 | Low-voltage circuit terminal voltage energy-saving equipment and its application method |
| CN109088411A (en) * | 2018-08-28 | 2018-12-25 | 贵州电网有限责任公司 | A kind of terminal voltage fining regulator |
| CN110134173A (en) * | 2019-06-11 | 2019-08-16 | 湖南工业大学 | A kind of contactless single phase ac voltage-stablizer and its control method |
| CN110518701A (en) * | 2019-09-05 | 2019-11-29 | 杭州市电力设计院有限公司余杭分公司 | A kind of electrical grid transmission adjustment system and method |
| CN113629720A (en) * | 2021-08-27 | 2021-11-09 | 广东电网有限责任公司 | Join in marriage full-automatic end user voltage quality hoisting device of net |
| CN116093951A (en) * | 2022-12-27 | 2023-05-09 | 武汉武新电气科技股份有限公司 | Self-coupling line terminal voltage lifting device and method |
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| CN106849105A (en) * | 2017-03-13 | 2017-06-13 | 南阳金冠智能开关有限公司 | Low-voltage distributing line intelligent regulating device |
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| CN109088411A (en) * | 2018-08-28 | 2018-12-25 | 贵州电网有限责任公司 | A kind of terminal voltage fining regulator |
| CN110134173A (en) * | 2019-06-11 | 2019-08-16 | 湖南工业大学 | A kind of contactless single phase ac voltage-stablizer and its control method |
| CN110518701A (en) * | 2019-09-05 | 2019-11-29 | 杭州市电力设计院有限公司余杭分公司 | A kind of electrical grid transmission adjustment system and method |
| CN113629720A (en) * | 2021-08-27 | 2021-11-09 | 广东电网有限责任公司 | Join in marriage full-automatic end user voltage quality hoisting device of net |
| CN113629720B (en) * | 2021-08-27 | 2023-08-04 | 广东电网有限责任公司 | Full-automatic end user voltage quality improving device of distribution network |
| CN116093951A (en) * | 2022-12-27 | 2023-05-09 | 武汉武新电气科技股份有限公司 | Self-coupling line terminal voltage lifting device and method |
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