CN205646828U - Circuit pressuretrol based on thyristor control technique - Google Patents
Circuit pressuretrol based on thyristor control technique Download PDFInfo
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- CN205646828U CN205646828U CN201620448474.7U CN201620448474U CN205646828U CN 205646828 U CN205646828 U CN 205646828U CN 201620448474 U CN201620448474 U CN 201620448474U CN 205646828 U CN205646828 U CN 205646828U
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Abstract
The utility model provides a circuit pressuretrol based on thyristor control technique. This voltage regulator comprise auto transformer, thyristor that has a plurality of taps and the controller that can follow the size tracking circuit terminal voltage that loads, and transformer tap and thyristor switch one -to -one install and control switching on and turn -offing of thyristor through the controller, adjust the voltage of series transformer load side output. The utility model discloses a during many tapped transformer put in series and join in marriage electric network line, realize multistage pressure regulating through thyristor control, solve circuit low -voltage and high voltage problem, when former polygonal voltage changes in range of regulation, realize through thyristor switch that the winding of different gears inserts, the steady voltage scope that realizes output voltage can realize low voltage compensation or high voltage compensation within 5%. The utility model discloses technological improvement with the novelty has realized outstanding technological effect, and consequently lower, the easy realization of cost simultaneously has good popularization prospect.
Description
Technical field
This utility model relates to electrical equipment industry technical field, is specifically related to a kind of line based on SCR control technology
Road automatic voltage regulator.
Background technology
For a user, voltage is the most qualified is their ultimate electricity consumption target；For power supply department,
Power factor is the important factor of optional cable and transformer capacity, is power supply cost and the important of distribution usefulness is examined
Core target.Too low or too high for voltage all can existence uses risk.
The harm of low-voltage:
(1) motor is burnt.Brownout, more than 10%, will make motor current increase, coil temperature liter
Even scaling loss motor time high serious.
(2) line loss is increased.When carrying certain electric power, voltage reduces, and electric current increases accordingly, and lead-in wire damages and increases
Greatly.
(3) reduce give, converting equipment ability.Owing to voltage reduces, corresponding reduction circuit delivery limits capacity,
Thus reducing stability, brownout is it may happen that collapse of voltage accident.
The harm of overtension:
(1) impact on distribution transforming itself.Overtension causes iron core magnetic flux density to increase, and time serious, iron core is satisfied
(the most ropy distribution transforming), distribution loss sharply increases, and causes resonance, produces harmonic wave, affects it
Its electrical equipment.
(2) impact on electrical equipment.Overtension can cause the most electrical equipment life-span significantly to shorten,
And cause loss to increase.As voltage raises 10%, the life-span in service life of electric filament lamp reduces about 70%.
For distribution low-voltage problem, in addition to taking management means, emphasis relies on technical measures to solve, existing
The technical way tackling low-voltage problem in technology is had to include following a few class:
1) on-load voltage regulating switch: be useful in high pressure occasion, Large Copacity, input cost is the highest, produce week
Phase is long, becomes to be concentrated mainly on for distributing net platform region and wants for application scenario capacity such as 6KV, 10KV, 35KV
Asking between hundreds of kilowatt to several megawatts, complicated in mechanical structure, relatively costly, maintenance workload is big, and gearshift is anti-
Answering speed slow, three-phase synchronous regulates but the easily three-phase starting the arc asynchronous, easy during regulation, and oil-insulation pollutes
Greatly, mechanical mechanism restricted lifetime, it is impossible to frequently switch, needs periodic maintenance, it is possible to resolve centrally connected power supply voltage is low
Problem, helpless for scatteredload, it is impossible to take into account proximally and distally quality of voltage requirement, substantially simultaneously
On can't resolve platform district become secondary line end user quality of voltage requirement.For 380V and following voltage
Compensate, lack corresponding product.Compensate the most helpless for low-voltage circuit terminal voltage.
2) common manostat: pressure regulation speed is slow, and machinery carbon brush and oil immersed need the 7-10 second just can complete；
Mechanical type pressure regulation, has contact, and the life-span is short, and use cost is high, mechanical and carbon brush type manostat 80% fault produces
In machinery and carbon brush, need periodic maintenance.Voltage stabilized range is little, efficiency is low；Working method is slided for utilizing carbon brush
Contact coiling surface produces spark arc, in turn results in surging (surge) phenomenon, and the surging of moment returns and causes
PC equipment fault；Load poor for applicability, inapplicable non-linear equipment；Frequent degree that complicated carbon brush can use and
Determine the speed of abrasion, have carbon brush to change and safeguard, toroidal transformer coil and contact surface, the most ground mistake,
Coil plane can be caused uneven because playing electric arc after carbon brush abrasion, unless coil re-grind, otherwise change
Also use the longest after coil；If split-phase adjusts, expense to be increased；Bearing capacity is poor, and general device starts
Electric current must take into increase capacity, and starting current can cause pressure drop or cause carbon brush abrasion to accelerate；Suitable environment energy
Power is poor, and vibration strength difference cannot bear adverse circumstances flexibility structure, slide on coil surface because of carbon brush, contact
Part is in transportation or is used in vibratility place, easily makes carbon brush rupture, and vibration strength is poor.Loop construction
Surface is open, oil gas, aqueous vapor, and the environment that dust fall is many easily causes coil surface layer short circuit, burns out line
Circle.The regulator products with similar function based on thyristor control technology occurred on the market is less, pressure regulation
Gear is few, and redundancy feature is many, is scarcely suitable for outdoor installation and uses, requires many to user, price.
3) SVG: be mainly used in dynamic passive compensation, controls power factor, although can also play support electricity
Pressure effect, but the Voltage Drop that cause long for circuit compensates and has little significance, and compensation depth is limited, simultaneously
In the case of circuit meets power factor command, exporting idle, raising voltage can increase line loss；And price
Expensive；
4) distribution transformer is installed, transforms branched line: cost is high, the more difficult recovery of power supply cost under Smaller load,
During for greater depth, effect is limited.
5) distributed power generation unit is installed: power supply reliability can be improved, but the cost of the energy is higher.
6) series voltage automatic pressure regulating device is installed:
A, required installed capacity are little, and major part user is directly provided by system；
B, cost are low, and cost performance is higher；
C, improve terminal voltage, reduce line loss, improve circuit and gain merit conveying capacity；
D, range of regulation width, flexibly customized.
The feature of summary regulative mode, series voltage automatic voltage regulator solves the low-voltage problem of distribution end,
It it is a kind of reliable compensatory device of less expensive.
Automatic voltage regulator conventional in prior art mostly is shunting switch formula, uses the mode of mechanical switch by voltage
Compensative winding puts into circuit, and its circuit theory is as shown in Figure 1.Due to the design defect of configuration aspects, tap is opened
In use there are problems in pass formula automatic voltage regulator:
1, switch contact serious wear；
2, each electrical fitting of load ratio bridging switch, connecting line, contact point etc. damage；
3, there is leakage of oil in the sealing ring of switch, pad etc.；
4, switching circuitry contact resistance (excessive) the most up to standard；
5, transition resistance damages；
6, in insulating oil, impurity, free carbon increase, oil blackening；
7, producing electric arc, speed of action is slow, safeguards inconvenience, and fault rate is high.
Summary of the invention
This utility model aims to the technological deficiency of prior art, it is provided that a kind of based on SCR control technology
Circuit automatic voltage regulator, falls or distribution with the terminal voltage solving to cause because distribution line is long in prior art
Net voltage decline abruptly affects the technical problem of supply voltage quality.
To be solved in the utility model another technical problem is that in prior art, circuit automatic voltage regulator uses machinery
Controlling, susceptiveness is low, fragile.
For realizing above technical purpose, this utility model by the following technical solutions:
A kind of circuit automatic voltage regulator based on SCR control technology, including main line, autotransformer, crystalline substance
Brake tube, dsp chip, input voltage measurement apparatus, output voltage measurement apparatus, wherein dsp chip has
Signal input part and signal output part, autotransformer is connected on main line, and autotransformer has some points
Joint, described some taps and thyristor switch one_to_one corresponding, IGCT communicates to connect with signal output part,
Input voltage measurement apparatus is connected with the part of autotransformer front end in main line by wire, output voltage
Measurement apparatus is connected with the part of autotransformer rear end in main line by wire, input voltage measurement apparatus
Communicate to connect with signal input part respectively with both output voltage measurement apparatus.
As preferably, also including current measuring device, described current measuring device is connected on main line, described
Current measuring device communicates to connect with signal input part.
As preferably, also including bypass and by-pass switch, the two ends of described bypass are connected in main line certainly
The part of autotransformer rear end in the part of coupling transformator front end and main line, by-pass switch is positioned in bypass；
On this basis it is further preferred that described by-pass switch communicates to connect with signal output part.
As preferably, also including capacitor and reactive-load compensation switch, described capacitor is connected in parallel on main line, nothing
Merit compensating switch is positioned on this parallel line.
In above technical scheme, described voltage measuring apparatus refer to magnitude of voltage is carried out accurate quantitative analysis and
Device by voltage data transmission to DSP control chip；The most all known device being capable of above-mentioned functions
Belong to the restriction scope of voltage measuring apparatus described in the utility model, include but not limited to that prior art possesses
The conventional voltage table of data communication function." defeated in described input voltage measurement apparatus, output voltage measurement apparatus
Enter ", " output " printed words refer to that its measurement data type is respectively input voltage and output voltage, and not structure
The feature of voltage measuring apparatus itself limits in pairs, owing to architectural feature of the present utility model the most clearly defines
Input voltage measurement apparatus, the installation site of output voltage measurement apparatus, thus serve measurement data type
Indicative function, therefore described " input ", " output " is only used for being distinguish between two voltage measuring apparatus.
In above technical scheme, in main line, " front end " or " rear end " of autotransformer is with electric current side
It is bound on the basis of to, say, that voltage measuring apparatus is by wire and autotransformer in main line
Front end is connected for measuring input voltage, and voltage measuring apparatus is by wire and autotransformer in main line
Rear end is connected for measuring output voltage.
In above technical scheme, described current measuring device refer to current value is carried out accurate quantitative analysis and
Device by current data transmission to DSP control chip；The most all known device being capable of above-mentioned functions
Belong to the restriction scope of current measuring device described in the utility model, include but not limited to that prior art possesses
The conventional current table of data communication function.
This utility model uses SCR to control technology and transformer technology, using IGCT as pressure-control circuit control
Switch in place mechanical type tap changer realizes contactless voltage-regulating, limits without regulation number of times；It has degree of stability high,
Reaction fast (Millisecond is shifted gears, and settles at one go, and power supply continuity is good)；Projected life is more than 20 years, without making an uproar
The advantages such as sound.
Dry voltage regulating transformer reliability is high, without leakage of oil risk, device oil-free, it is to avoid greasy dirt, environmental protection；Solely
Special multi-tap series transformer design, gear design meets the precision of voltage regulation and gear economy simultaneously.
This technical scheme uses the IGCT that reliability is high, is widely used more than 30 years in every profession and trade；Use
Life-span was long, up to more than 20 years.Switching characteristic is good, can realize Millisecond and open shutoff, not have number of times to limit,
It is little that low frequency opens turn-off power loss.
In controlling unit, turn off/open requirement according to IGCT, carry situation for different band and loadtype sets
Count suitable drive circuit, use high-speed dsp chip controls Integration ofTechnology control system to realize closed loop control；
Using instantaneous voltage meter algorithm controls, it is achieved IGCT zero-crossing switching, fast conducting controls.
Voltage sample data, through dq conversion and low-pass filtering, obtain voltage effective value, can quickly calculate voltage
Amplitude.By the sampled data of voltage through dq conversion and low-pass filtering, obtain voltage effective value, can quickly calculate
Going out voltage magnitude, it is achieved IGCT zero passage crash change of speed controls, control accuracy is high.
This technical scheme have matched auto by pass design, built-in is switched fast by-pass switch, at device pressure-control circuit
When breaking down, bypass mode can be quickly switched into, at utmost reduce user's dead electricity time.Add nothing
Merit compensates free function, installs shnt capacitor, and device can carry out reactive-load compensation according to line load character.
Technique effect of the present utility model mainly includes following several respects:
1) whole piece circuit rate of qualified voltage can be made to reach 100%
According to route parameter calculation, it may be determined that the installation site of pressure regulator and setting parameter.Automatic by circuit
Pressure regulator self measurement circuitry voltage, guarantees after regulation that the voltage of whole piece circuit is all up to state standards.
2) the high and low value that voltage-regulation is interval can arbitrarily set
Voltage regulation limits can arbitrarily be set by controller or notebook computer.Voltage high level, low value are whole
Definite value can be revised at any time according to different load situation.
3) line loss and distribution loss can be effectively reduced
By promoting circuit working voltage, output equal-wattage can reduce running current and reduce line power loss.
Control circuit working voltage and can reduce distribution loss and user power utilization equipment loss near rated value, extend and use
Electricity service life of equipment.Own loss is extremely low.
4) pressure regulator operation troubles bypass functionality
This matched with devices specialized designs by-pass switch.When pressure regulation operation troubles occurs in device, device will start
Auto by pass, it is ensured that load side is powered normally, reduces power off time to the full extent.
5) possess phase selection equilibrium function, carry Function of Reactive Power Compensation Control (optional), solve three-phase imbalance,
Power factor is low, plays the effect of comprehensive control, energy-conserving and environment-protective, low cost.
6) capacity can be as small as 10KVA and can arrive greatly MVA, mainly to solve 380V/220V user side voltage
It is main, can compensate for single-phase and three-phase, phase splitting compensation, flexible configuration can be realized；Invest little, instant effect, permissible
Do and where pinpoint the problems, the most quickly solve, it is to avoid overlapping investment.
7) this product efficiency is high, may be up to 99%, and control performance is good, voltage compensation is effective；Use closed loop
Control, it is possible to meet supply side and Voltage Drop problem that the dual reason of load side causes.
Meanwhile, there is main circuit structure simple, efficient, safe and reliable；Range of regulation width :-25%～7%；Adjust
The pressure time is short: < 30ms；Do not produce harmonic wave, be lost little, pollution-free, non-maintaining；Applied widely: to be suitable for
In distribution tail end line low-voltage, to voltage request than more sensitive industrial and mining establishment, to supply voltage require higher
The occasion such as community in urban areas.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of shunting switch formula circuit pressure regulator in prior art；
Fig. 2 is the circuit theory diagrams of this utility model embodiment 1；
In figure
1, main line 2, autotransformer 3, IGCT 4, dsp chip
5, input voltage measurement 6, output voltage measurement 7, current measuring device 8, bypass
Device device
9, by-pass switch 10, capacitor 11, reactive-load compensation switch 41, signal input part
42, signal output part
Detailed description of the invention
Hereinafter detailed description of the invention of the present utility model will be described in detail.In order to avoid the most unnecessary
Details, in the examples below to belonging to known structure or function will not be described in detail.Following example
Used in approximating language can be used for quantitative expression, show can allow in the case of not changing basic function
Quantity has certain variation.In addition to being defined, technology used in following example and scientific terminology have and this
The identical meanings that utility model one of ordinary skill in the art are commonly understood by.
Embodiment 1
A kind of circuit automatic voltage regulator based on SCR control technology, including main line 1, autotransformer 2,
IGCT 3, dsp chip 4, input voltage measurement apparatus 5, output voltage measurement apparatus 6, wherein DSP
Chip 4 has signal input part 41 and signal output part 42, and autotransformer 2 is connected on main line 1,
Autotransformer 2 has some taps, and described some taps and IGCT 3 switch one_to_one corresponding, brilliant lock
Pipe 3 communicates to connect with signal output part 42, input voltage measurement apparatus 5 by wire and main line 1 from
The part of coupling transformator 2 front end is connected, and output voltage measurement apparatus 6 is by wire and self coupling in main line 1
The part of transformator 2 rear end is connected, both input voltage measurement apparatus 5 and output voltage measurement apparatus 6 point
Do not communicate to connect with signal input part 41.
On the basis of above technical scheme, meet following condition:
Also include that current measuring device 7, described current measuring device 7 are connected on main line 1, described electric current
Measurement apparatus 7 communicates to connect with signal input part 41.
Also including bypassing 8 and by-pass switch 9, the two ends of described bypass 8 are connected to self coupling in main line 1
The part of autotransformer 2 rear end in the part of transformator 2 front end and main line 1, by-pass switch 9 is positioned at side
On road 8, described by-pass switch 9 communicates to connect with signal output part 42.
Also including capacitor 10 and reactive-load compensation switch 11, described capacitor 10 is connected in parallel on main line 1,
Reactive-load compensation switch 11 is positioned on this parallel line.
The circuit automatic voltage regulator that this embodiment is provided, by having the autotransformer of multiple tap, brilliant lock
Manage and can follow the tracks of with payload the controller composition of circuit terminal voltage.Load tap changer is opened with IGCT
Closing one_to_one corresponding, pressure regulator controls the turn-on and turn-off of IGCT by controller, regulates series transformer and bears
The voltage of lotus side output.When controller detects that user side line voltage distribution exceedes permission range of operation, controller
Turn off switching circuit by turn on thyristors and realize step pressure regulation, it is achieved the regulation of load side voltage, make load
Side user side voltage U0=Ul ± △ U, it is achieved the buck of line voltage is adjusted control.△ U is timing,
It is referred to as pressure regulation of boosting, when △ U is for bearing, referred to as blood pressure lowering pressure regulation.Pressure regulator load side A, B, C phase install electricity
Current transformer, supply lines trackside, load side A, B, C phase all install voltage transformer, it is achieved closed loop control.
Circuit pressure regulator (range of regulation is-25%～+7%), meets load side voltage range of operation (-10%～+7%)
Meet national standard.
Embodiment 2
A kind of circuit automatic voltage regulator based on SCR control technology, including main line 1, autotransformer 2,
IGCT 3, dsp chip 4, input voltage measurement apparatus 5, output voltage measurement apparatus 6, wherein DSP
Chip 4 has signal input part 41 and signal output part 42, and autotransformer 2 is connected on main line 1,
Autotransformer 2 has some taps, and described some taps and IGCT 3 switch one_to_one corresponding, brilliant lock
Pipe 3 communicates to connect with signal output part 42, input voltage measurement apparatus 5 by wire and main line 1 from
The part of coupling transformator 2 front end is connected, and output voltage measurement apparatus 6 is by wire and self coupling in main line 1
The part of transformator 2 rear end is connected, both input voltage measurement apparatus 5 and output voltage measurement apparatus 6 point
Do not communicate to connect with signal input part 41.
On the basis of above technical scheme, meet following condition:
Also including bypassing 8 and by-pass switch 9, the two ends of described bypass 8 are connected to self coupling in main line 1
The part of autotransformer 2 rear end in the part of transformator 2 front end and main line 1, by-pass switch 9 is positioned at side
On road 8.
Also including capacitor 10 and reactive-load compensation switch 11, described capacitor 10 is connected in parallel on main line 1,
Reactive-load compensation switch 11 is positioned on this parallel line.
Embodiment 3
A kind of circuit automatic voltage regulator based on SCR control technology, including main line 1, autotransformer 2,
IGCT 3, dsp chip 4, input voltage measurement apparatus 5, output voltage measurement apparatus 6, wherein DSP
Chip 4 has signal input part 41 and signal output part 42, and autotransformer 2 is connected on main line 1,
Autotransformer 2 has some taps, and described some taps and IGCT 3 switch one_to_one corresponding, brilliant lock
Pipe 3 communicates to connect with signal output part 42, input voltage measurement apparatus 5 by wire and main line 1 from
The part of coupling transformator 2 front end is connected, and output voltage measurement apparatus 6 is by wire and self coupling in main line 1
The part of transformator 2 rear end is connected, both input voltage measurement apparatus 5 and output voltage measurement apparatus 6 point
Do not communicate to connect with signal input part 41.
Above embodiment of the present utility model is described in detail, but described content is the most of the present utility model
Preferred embodiment, not in order to limit this utility model.All done in application range of the present utility model appoint
What amendment, equivalent and improvement etc., within should be included in protection domain of the present utility model.
Claims (5)
1. a circuit automatic voltage regulator based on SCR control technology, it is characterised in that include main line (1),
Autotransformer (2), IGCT (3), dsp chip (4), input voltage measurement apparatus (5), defeated
Going out voltage measuring apparatus (6), wherein dsp chip (4) has signal input part (41) and signal output
End (42), autotransformer (2) is connected on main line (1), and autotransformer (2) has some
Tap, described some taps and IGCT (3) switch one_to_one corresponding, IGCT (3) and signal output
End (42) communication connection, input voltage measurement apparatus (5) is by wire and self coupling transformation in main line (1)
The part of device (2) front end is connected, and output voltage measurement apparatus (6) is by wire and main line (1)
The part of autotransformer (2) rear end is connected, and input voltage measurement apparatus (5) and output voltage measure dress
The two communicates to connect with signal input part (41) respectively to put (6).
A kind of circuit automatic voltage regulator based on SCR control technology the most according to claim 1, its
Being characterised by also including current measuring device (7), described current measuring device (7) is connected on main line (1)
On, described current measuring device (7) communicates to connect with signal input part (41).
A kind of circuit automatic voltage regulator based on SCR control technology the most according to claim 1, its
Being characterised by also including bypassing (8) and by-pass switch (9), the two ends of described bypass (8) are connected to
In main line (1) in the part of autotransformer (2) front end and main line (1) after autotransformer (2)
The part of end, by-pass switch (9) is positioned in bypass (8).
A kind of circuit automatic voltage regulator based on SCR control technology the most according to claim 3, its
It is characterised by that described by-pass switch (9) communicates to connect with signal output part (42).
A kind of circuit automatic voltage regulator based on SCR control technology the most according to claim 1, its
Being characterised by also including capacitor (10) and reactive-load compensation switch (11), described capacitor (10) is connected in parallel on
On main line (1), reactive-load compensation switch (11) is positioned on this parallel line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448474.7U CN205646828U (en) | 2016-05-16 | 2016-05-16 | Circuit pressuretrol based on thyristor control technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448474.7U CN205646828U (en) | 2016-05-16 | 2016-05-16 | Circuit pressuretrol based on thyristor control technique |
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| Publication Number | Publication Date |
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| CN205646828U true CN205646828U (en) | 2016-10-12 |
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ID=57056361
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620448474.7U Expired - Fee Related CN205646828U (en) | 2016-05-16 | 2016-05-16 | Circuit pressuretrol based on thyristor control technique |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899025A (en) * | 2017-04-26 | 2017-06-27 | 武汉国想电力科技股份有限公司 | A kind of comprehensive compensation type alternating current steady voltage plug |
| CN108512230A (en) * | 2018-05-16 | 2018-09-07 | 长沙理工大学 | Voltage drop and undervoltage compensation method and device based on multi-tap transformer |
| CN109560556A (en) * | 2018-12-12 | 2019-04-02 | 国网山西省电力公司大同供电公司 | A kind of voltage-regulating system adjusted based on flexible multimode regulating switch |
| CN109659949A (en) * | 2017-10-12 | 2019-04-19 | 山东民生电气设备有限公司 | A kind of comprehensive lifting device of low-voltage circuit voltage power-less |
| CN109888792A (en) * | 2019-04-28 | 2019-06-14 | 成都亿成科技有限公司 | A kind of contactless voltage and current regulator of power distribution network low-voltage circuit dynamic |
| CN110401200A (en) * | 2019-08-12 | 2019-11-01 | 广州市奔流电力科技有限公司 | Route voltage-regulating system and route pressure regulation method |
| CN110571824A (en) * | 2019-08-30 | 2019-12-13 | 北京星航机电装备有限公司 | iron core magnetization experimental equipment and direct voltage adjustable SVG control method thereof |
-
2016
- 2016-05-16 CN CN201620448474.7U patent/CN205646828U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899025A (en) * | 2017-04-26 | 2017-06-27 | 武汉国想电力科技股份有限公司 | A kind of comprehensive compensation type alternating current steady voltage plug |
| CN109659949A (en) * | 2017-10-12 | 2019-04-19 | 山东民生电气设备有限公司 | A kind of comprehensive lifting device of low-voltage circuit voltage power-less |
| CN108512230A (en) * | 2018-05-16 | 2018-09-07 | 长沙理工大学 | Voltage drop and undervoltage compensation method and device based on multi-tap transformer |
| CN109560556A (en) * | 2018-12-12 | 2019-04-02 | 国网山西省电力公司大同供电公司 | A kind of voltage-regulating system adjusted based on flexible multimode regulating switch |
| CN109888792A (en) * | 2019-04-28 | 2019-06-14 | 成都亿成科技有限公司 | A kind of contactless voltage and current regulator of power distribution network low-voltage circuit dynamic |
| CN109888792B (en) * | 2019-04-28 | 2024-07-16 | 成都亿成科技有限公司 | Dynamic contactless voltage and current regulator for low-voltage line of power distribution network |
| CN110401200A (en) * | 2019-08-12 | 2019-11-01 | 广州市奔流电力科技有限公司 | Route voltage-regulating system and route pressure regulation method |
| CN110571824A (en) * | 2019-08-30 | 2019-12-13 | 北京星航机电装备有限公司 | iron core magnetization experimental equipment and direct voltage adjustable SVG control method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
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