CN104115388A - Transformer arrangement for secondary distribution network voltage supply - Google Patents
Transformer arrangement for secondary distribution network voltage supply Download PDFInfo
- Publication number
- CN104115388A CN104115388A CN201380009566.4A CN201380009566A CN104115388A CN 104115388 A CN104115388 A CN 104115388A CN 201380009566 A CN201380009566 A CN 201380009566A CN 104115388 A CN104115388 A CN 104115388A
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- China
- Prior art keywords
- voltage
- transformer
- distribution network
- electric current
- power distribution
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Transformer arrangement (14) for secondary distribution network voltage supply, having: a transformer (20) for converting a primary voltage in the form of a medium voltage in the range of from 1 kV to 50 kV into a secondary voltage which is lower than the primary voltage for secondary distribution network supply; an adjusting device (19) for matching the ratio of the primary voltage and the secondary voltage; a control device (18) for detecting the voltage on at least one of the phases and for controlling the adjusting device (19) on the basis of the detected voltage, wherein the control takes place in such a way that a discrepancy between voltage values occurring on the secondary distribution network and a predeterminable setpoint voltage value for the secondary distribution network is reduced.
Description
Technical field
The present invention relates to a kind of device for transformer for power distribution network power supply and a kind of for moving the method for the device for transformer of power distribution network power supply.
Background technology
The conventional generating that comes from fossil energy carrier almost 100% is concentrated, and current electrical network is also this situation design.At this, to calculate all the time from power distribution network transformer to as the voltage drop of the joint of private home.
But, by renewable origin, generate electricity very leap ahead occur now.Compare with traditional generating, carry out dispersedly generating electricity and not being unessential part by renewable origin, for example, in private home or mini-plant.
May occur more thus the situation that can not realize so far, i.e. voltage drop is returned to power distribution network along connecting line, however not design for this reason of power distribution network.Result is overtension in power distribution network, and it may surpass 10% boundary of rated voltage.In medium voltage network, also may there is overtension, for example, due to the wind power equipment connecting.This causes the voltage in low voltage electric network (power distribution network) to raise equally.
The known possibility of avoiding this problem is clearly to extend power distribution network, is increased in the cross-section of cable of applying in power distribution network.This has reduced the voltage drop through cable, and has also reduced thus the overtension in power distribution network.But this is associated with huge expense.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of device for transformer and a kind of method for operating transformer device, utilizes it to avoid above-mentioned problem.
This technical problem is solved by having the device for transformer of the feature of claim 1.About the solution of the method, be to have the method for the feature of claim 8.
Device for transformer for power distribution network power supply according to the present invention has transformer, and it is for converting primary voltage to the secondary voltage for power distribution network power supply lower with respect to primary voltage.At this, primary voltage is the middle pressure within the scope of several kV, for example, be 10kV, 20kV or 30kV.Secondary voltage is the voltage for the power supplied locally of power distribution network or urban distribution network, for example, be 230V single-phase in 400V wire-wire voltage.
Device for transformer also comprises for mating the adjusting device of proportionate relationship between primary voltage and secondary voltage.This adjusting device is typically configured to the secondary voltage of gradable variation.In addition, device for transformer comprises for gathering the control device of the voltage of at least one phase.At this, can carry out this collection in primary voltage side.Yet, preferably in primary side, carry out the collection of voltage because at this because lower secondary voltage advantageously needs lower measurement expense.
Control device carrys out regulating and controlling device by measured value, wherein, controls as follows,, is reduced in the deviation of the load voltage value of the magnitude of voltage that occurs in power distribution network and default power distribution network that is.
According to of the present invention for operating in the method for the transformer of the device for transformer of power distribution network power supply, this device for transformer is configured to convert primary voltage to the secondary voltage lower with respect to primary voltage, carries out following steps:
-by the local control device arranging in device for transformer, gather the voltage of at least one phase;
-the magnitude of voltage and the rated value that relatively gather, and by control device according to relatively determining control signal;
-be controlled at the local adjusting device arranging in transformer, for mate the height of secondary voltage according to control signal.
Advantageously realize thus the work of matching transformer as follows, made to avoid the overvoltage in power distribution network.This even carry out reproducible production capacity device from disperseing to be also applicable to while pressing the energy adverse current of layer.
In particularly preferred structure of the present invention, directly adjusting device, control device and transformer are neighboringly built in position each other.At this, they can for example form a construction unit, are configured to an integral device.Alternatively, control device can be for example the outside equipment separated with transformer, but it is disposed in the direct environment of transformer.
Advantageously only from the local available information of transformer, the voltage by acquisition and processing within the scope of transformer, carries out the control to the work of transformer thus.Namely advantageously do not need Long-distance Control.Equally do not need for example voltage data of remote measurement yet.
Can be separately or jointly carry out following two technical schemes at this:
At this, the measurement of voltage has following object: by the voltage of measuring at least one phase, determine on middle pressure layer whether occurred the variation of voltage with respect to rated value, for example, because feed from wind power equipment is also or under failure condition, occurring under short-circuit conditions.Because the height of middle pressure directly affects the height of low pressure, here advantageously by adjusting device, revise.
In a technical scheme of the present invention, be all collections of carrying out mutually voltage.Particularly preferably be, when regulating and controlling device, except the absolute value of voltage, the stretching, extension of also consideration value (Spreizung), considers the interval that measured voltage is mutual.
Except the measurement of voltage, also can carry out the measurement of electric current: by the electric current of measuring at least one phase, determine the loading condition in low-pressure side.At this, measured electric current is the poor of the electric current that consumes in power distribution network with produce.According to the loading condition in power distribution network, the voltage that reduces or raise in power distribution network, wherein, the variation of voltage increases along with the interval of transformer mostly.
At this, replace in a measurement of going up mutually, also can be on all three-phases measuring voltage and electric current.The advantage that such measurement has is that control device can be considered all voltage and currents.Got rid of thus because appear at wrong mutually in and see the variation of the loading condition in power distribution network or middle pressure by mistake.The advantage having is in addition to consider mutually for these stretching, extension of measured value.At this, stretch and for example to refer to poor between maximum and minimum value.
In expansion of the present invention, carry out three phase acquisitions to the electric current at least one (particularly whole) output line of the primary side of device for transformer.In other words, upper at the bus-bar (Sammelschiene) of whole primary side thus, but each connecting line disconnected from each other gather electric current.This also can carry out three-phase measurement except single-phase measurement.Can accurately determine the loading condition in power distribution network thus.Therefore for example can carry out the compensation of change in voltage, this can not carry out the in the situation that of measurement at bus-bar place.Can avoid carrying out equally the compensation of change in voltage, although this causes approximation on the average in rated voltage, for the various piece of power distribution network, cause departing from the voltage range of the rated voltage of 100%+/-10% allowing.
In preferred structure, realize as follows adjusting device, make it voltage of the power distribution network side of transformer can be improved to fixing amount or relative value and reduce identical amount or relative value.That is, just can provide three voltage levels.
Accompanying drawing explanation
Other applicable structure of the present invention and advantage are the contents of the embodiment of the following description of the present invention in the illustrated situation with reference to accompanying drawing, wherein, and the identical identical assembly of Reference numeral corresponding function.In accompanying drawing:
Fig. 1 shows device for transformer,
Fig. 2 shows the trend that electric current in power distribution network changes with respect to the maximum of the voltage in power distribution network.
Embodiment
Fig. 1 shows the device for transformer 14 according to the first embodiment.Device for transformer 14 comprises transformer 20, its for by pressure three-phase convert to for supplying the distribution network segment 10 of power distribution network ... 12 low pressure, provides in this and presses from trans-regional medium-pressure electricity supply by three middle crimp head 15.In to be pressed in should be for example 20kV here, and low pressure in the common three phase supply of Germany relatively zero line be 230V.In addition, transformer 20 is connected with middle crimp head 15 at input side, and outlet side with for distributing the bus-bar 24 of low pressure to be connected.
From bus-bar 24s, there is the distribution network segment 10 with power distribution network ... 12 common connection.This distribution network segment 10 ... 12 comprise respectively a series of private home in this example, and they are supplied low pressure.At this, a part of family for example has photovoltaic apparatus in this example, and therefore can generate electricity and feed back.In the energy consumption of family's side and feedback, all change the distribution network segment 10 separately ... the voltage of 12 parts.At this, be apparent that most conventionally at the distribution network segment 10 ... 12 variations from device for transformer 14 point place farthest.
Fig. 2 shows at the distribution network segment 10 ... the modeling of the feed-in of voltage and the impact of feedback in 12.At this, the figure of Fig. 2 shows at the distribution network segment 10 on x axle ... that in 12, flow through or by the electric current of its feedback, and on y axle, show due to electric current at the imaginary distribution network segment 10 ... the relative variation of the voltage at 12 place, solstics.At this, from the maximum load of hypothesis, calculate the first limit point 22, i.e. the imaginabale maximum consumption of the electrical appliance of all connections under the production capacity that does not have to disperse and feedback.At this, at the distribution network segment 10 ... in 12, flow through the electric current of 220A.In this case, relative change in voltage is 1.5%, namely at the distribution network segment 10 ... the voltage ratio at 12 place, solstics is approximately little by 1.5% at the voltage at transformer place.
From the worst hypothesis of non-loaded maximum feedback, determine the second limit point 23.At this, suppose to be fed back to 650A, this causes raising at the voltage of place, solstics generation 3.5%.By characteristic curve 21, connect resulting point.The actual change of voltage is less than the situation at limit point 22,23 owing to mixing the feedback of load mostly, but characteristic curve 21 allow a kind of from the electric current flowing through at device for transformer 14 hypothesis to change in voltage.
Device for transformer 14 comprises control device 18, and it is configured to three-phase measures at the distribution network segment 10 ... electric current in 12.In addition, control device 18 is connected with bus-bar 24 in the mode being applicable to.Measured current value is continued to be transferred to actuation means 18, and control device 18 is connected with actuation means 18.
The additional voltage of measuring in bus-bar 24 place's one phases of control device 18.At this, in device for transformer 14, realize and arrange control device 18 and voltage measuring apparatus 17, and they only use in order to measure joint and the circuit existing there.Therefore do not need or outside connection is not set.
Control device 18 is configured to the measured value of assessment input.Therefore, the load voltage value of magnitude of voltage and 230V or 400V is compared.If the variation of pressing in occurring, directly continues to be transferred to low-pressure side by it by transformer 20.Therefore, actuation means 18 determines whether to take measures, so that coupling low pressure.In addition, by characteristic curve 21, be evaluated at the measured current value of low-pressure side, and therefrom determine the change in voltage producing due to the load in low-pressure side and production capacity.Two change in voltage, due to the change in voltage of middle pressure with from the distribution network segment 10 ... 12 change in voltage in self are considered jointly.
For example determined at the different distribution network segments 10 ... in 12 with the strong voltage deviation of rated value.If it surpasses threshold value, actuation means 18 is responsible for changing voltage.At this, whether actuation means also checks at the distribution network segment 10 in this example ... a scope that has departed from the rated voltage +/-10% allowing in the voltage in 12 place, solstics, or rather after change in voltage.In other words, actuation means 18 is also considered the stretching, extension of measured current value, i.e. mutual interval.If for example the distribution network segment 10 ... one in 12 has obvious voltage rising, and the distribution network segment 10 ... in 12, another has obvious voltage drop, and the coupling of voltage may be nonsensical.
In this case, device for transformer 14 can have following possibility, to control centre, sends warning signal or problem condition is stored in record for later assessment.
In order to realize the coupling of voltage, actuation means 18 regulating and controlling devices 19.The turn ratio of these adjusting device 19 matching voltage transducers 20.In this example, adjusting device 19 is configured to, and except the normal turn ratio in the lower transformation that is pressed onto low pressure of rated value separately, can also carry out more than transformation 6% or that be less than 6% voltage.Control device can proceed to the connection of a plurality of voltages in this example thus, and for example from a decline, pressure and one obtain changing away from the total voltage more than 9% of device for transformer 14 in the strong feed-in of power distribution network side.Improve 6% voltage by adjusting device 19 after, then retained contiguous device for transformer 14 for example on numerical value higher than rated voltage 2% and away from transformer 14 voltage lower than rated voltage about 3%.
Under adjusting device 19, control device 18 and transformer 20 are preferably associated in position, realize, for example, as transformer station.Thus, device for transformer 14 is independent of external signal, i.e. its order that need to do not preset by outside need to be from outside measuring-signal yet.For each distribution network segment 10 ... 12 determine that characteristic curves are also stored in device for transformer shown in figure 2, for example, be stored in the memory cell of actuation means 18 and be applicable to.
The device for transformer 14 of this example is carried out the single-phase measurement of voltage, so that the variation of pressing in identification.In addition, at the distribution network segment 10 ... 12 directions are carried out the three-phase of electric current and are measured.This is that the accuracy of measurement is with respect to the favourable compromise of expense.At medium voltage side, single-phase measurement typical case is enough.In low-pressure side, estimate to occur the difference of electric current between phase on the contrary.By considering this difference all measurement in mutually.
Yet, there is other operational feasibility that is different from described embodiment.This will be at following Short Description.At this, the parts that exist in an embodiment are also consistent.
Therefore, also can measure the voltage of all phases.Can realize thus voltage difference there between being also identified in mutually.Therefore, can to absolute value, also to the stretching, extension of magnitude of voltage, respond according to more accurate mode.For this reason, correspondingly matching control apparatus 18, and it must be assessed the measured value of greater number.
In addition, under the meaning of simplifying, can replace the current measurement of three-phase to carry out single-phase current measurement.Having reduced thus measurement and survey fee uses.But, do not survey in this case in the specific ruuning situation of low-pressure side.
By not at bus-bar 24 places but even separately for each distribution network segment 10 ... 12 carry out the current measurement in low-pressure side, can expand the detection possibility of device for transformer 14.Obtain thus each distribution network segment 10 ... 12 value, and device for transformer 14 can respond with higher accuracy or identification problem situation more accurately, controls possibility no longer enough in this problem condition.
When not only separately to the distribution network segment 10 ... 12 but also when each is carried out to current measurement mutually, to the distribution network segment 10 ... the assessment of 12 situation becomes more accurate.Again improve thus measurement expense, but can very accurately determine the distribution network segment 10 ... 12 situation.Can almost avoid the disadvantageous voltage matches by actuation means 18 completely thus, and be reduced at the coupling (as long as device for transformer 14 storage or indication problems) in power distribution network, because understood more accurately problem.Disadvantageous voltage matches for example, is improved at the distribution network segment 10 ... voltage trend in 12, but at other distribution network segment 10 ... voltage in 12 has been broken tolerance limits thus simultaneously.
At this, for technical staff, be apparent that, can carry out in electric pressure converter 20 both sides current measurement (as long as it should be separately to each distribution network segment 10 ... 12 carry out).Can carry out voltage measurement in electric pressure converter 20 both sides equally, in principle.For this reason, measured value must be assessed or convert according to self known mode.But, in the measurement of medium voltage side, can bring higher expense.
As to shown in the further simplification of transformer 14, can fully phase out current measurement.In this case, be no longer evaluated at the situation of low-pressure side.Yet the voltage measurement of existence allows the response for changing to medium voltage side.At this, can be as mentioned above single-phasely or three-phase ground carry out voltage measurement.
Claims (15)
1. the device for transformer (14) for power distribution network power supply, has:
-transformer (20), for converting the primary voltage of the swaging formula with in 1kV to 50kV scope to the secondary voltage for power distribution network supply lower with respect to described primary voltage;
-adjusting device (19), for mating the ratio between described primary voltage and described secondary voltage;
-control device (18), for gathering the voltage of at least one phase and for adjusting device (19) described in the voltage control by gathered, wherein, carry out as follows described control, make to reduce the deviation of the load voltage value of the magnitude of voltage occur and default power distribution network in power distribution network.
2. according to device for transformer claimed in claim 1 (14), wherein, described control device (18) is configured to gather the voltage of all phases.
3. according to the device for transformer described in claim 1 or 2 (14), wherein, described control device (18) is configured to gather at least one electric current in mutually, particularly gathers all electric currents in mutually.
4. according to the device for transformer described in any one in the claims (14), wherein, the primary side that described control device (18) is configured to gather described device for transformer (14) single-phasely is to the distribution network segment (10 ... 12) electric current at least one output line, particularly gathers the electric current in all output lines.
5. according to the device for transformer described in any one in the claims (14), wherein, described control device (18) is configured to three-phase and gathers the primary side of described device for transformer (14) to the distribution network segment (10 ... 12) electric current at least one output line, particularly gathers the electric current in all output lines.
6. according to the device for transformer described in any one in the claims (14), wherein, described control device (18) is constructed to, except gathering the value of electric current and/or voltage, also consider the interval that they are mutual.
7. according to the device for transformer described in any one in the claims (14), wherein, according to the mode that direct position is close to each other, construct described transformer (20), adjusting device (19) and control device (18).
8. one kind for operating in the method for the transformer (20) of the device for transformer (14) of power distribution network power supply, described transformer (20) is configured to convert primary voltage to the secondary voltage lower with respect to described primary voltage, has following steps:
-by control device (18), gather the voltage of at least one phase;
-the voltage and the rated value of power distribution network that relatively gather, and by described control device (18) from described relatively definite control signal;
-be the height of coupling secondary voltage, by described control signal regulating and controlling device (19), make to reduce the deviation of the load voltage value of the magnitude of voltage occur and default power distribution network in power distribution network.
9. in accordance with the method for claim 8, wherein, gather the voltage of all phases.
10. in accordance with the method for claim 9, wherein, except with rated value relatively, also carry out the assessment to gathered voltage each interval, and from definite described control signal relatively and the assessment at interval.
11. according to the method described in any one in claim 8 to 10, wherein, determines the electric current of at least one phase, particularly determines the electric current of all phases.
12. in accordance with the method for claim 11, wherein, and the electric current that assessment gathers interval each other, and when determining described control signal, consider the assessment to current intervals.
13. according to the method described in any one in claim 8 to 10, wherein, fill order's current phasor measurement at least one output line of the primary side of described device for transformer (14), fill order's current phasor measurement in all output lines particularly, and when determining described control signal, consider measured output line electric current.
14. according to the method described in any one in claim 8 to 10, wherein, in at least one output line of the primary side of described device for transformer (14), carrying out three-phase current measures, particularly in all output lines, carry out three-phase current and measure, and consider measured output line electric current when determining described control signal.
15. according to the method described in any one in claim 8 to 14, wherein, uses in the local adjusting device (19) arranging of described device for transformer (14) and at the local control device (18) arranging of described device for transformer (14).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210202273 DE102012202273A1 (en) | 2012-02-15 | 2012-02-15 | Transformer arrangement for the local grid voltage supply |
| DE102012202273.2 | 2012-02-15 | ||
| PCT/EP2013/052812 WO2013120866A1 (en) | 2012-02-15 | 2013-02-13 | Transformer arrangement for secondary distribution network voltage supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104115388A true CN104115388A (en) | 2014-10-22 |
Family
ID=47739238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380009566.4A Pending CN104115388A (en) | 2012-02-15 | 2013-02-13 | Transformer arrangement for secondary distribution network voltage supply |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2801148A1 (en) |
| CN (1) | CN104115388A (en) |
| DE (1) | DE102012202273A1 (en) |
| WO (1) | WO2013120866A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013109611A1 (en) * | 2013-09-03 | 2015-03-05 | Maschinenfabrik Reinhausen Gmbh | Device and method for controlling the stability of a local network with a controllable local power transformer |
| DE102022110668A1 (en) | 2022-05-02 | 2023-11-02 | Maschinenfabrik Reinhausen Gmbh | METHOD FOR ADJUSTING A SET VALUE VOLTAGE FOR CONTROLLING A TAPPING TRANSFORMER AND DEVICE FOR ADJUSTING A SET VOLTAGE FOR CONTROLLING A TAPPING TRANSFORMER |
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| EP0064642B1 (en) * | 1981-05-02 | 1986-07-30 | Heidelberger Druckmaschinen Aktiengesellschaft | Electric safety device for the control of a printing machine |
| CN2168277Y (en) * | 1993-05-30 | 1994-06-08 | 周楚康 | Voltage-stabilizing controlling transformer |
| US5736827A (en) * | 1992-04-30 | 1998-04-07 | Maschinenfabrik Reinhausen Gmbh | Motor driven step switch |
| CN2328111Y (en) * | 1998-05-12 | 1999-07-07 | 沈阳工业学院 | Small low voltage single phase distributor automatic with voltage regulator by load |
| WO2002086647A2 (en) * | 2001-04-20 | 2002-10-31 | Maschinenfabrik Reinhausen Gmbh | Arrangement for automatically influencing a mains supply and motor drive for said arrangement |
| CN101553766A (en) * | 2006-11-17 | 2009-10-07 | Abb研究有限公司 | Voltage control for electric power systems |
| DE102009014243A1 (en) * | 2009-03-20 | 2010-09-23 | A. Eberle Gmbh & Co. Kg | Local power transformer or circuit for electrical distribution transformer for control or regulation of voltage range of every phase for low voltage level, is provided with distribution transformer with primary and secondary coiling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH118811A (en) * | 1926-04-10 | 1927-02-01 | Oerlikon Maschf | Switching device for additional transformers. |
| JPS59108121A (en) * | 1982-12-14 | 1984-06-22 | Tokyo Denshi Kogyo Kk | Adjusting device of alternating current voltage |
| DE3502889A1 (en) * | 1984-07-24 | 1986-02-06 | MITEC Moderne Industrietechnik GmbH, 8012 Ottobrunn | Transformer circuit |
| DE3546614C2 (en) * | 1985-01-29 | 1990-08-09 | Mitec Moderne Industrietechnik Gmbh, 8012 Ottobrunn, De | Transformer circuit |
| DE19848428C2 (en) * | 1998-10-21 | 2001-09-13 | Thomas Klein | Graduated voltage stabilizer |
| DE19933811A1 (en) * | 1999-07-20 | 2001-02-01 | Abb Research Ltd | Three-phase transformer for power distribution at medium-and high-voltages, with voltage control, uses controlled converter for regulating the secondary voltage via an input-side |
| DE102007037277A1 (en) * | 2007-08-07 | 2009-02-19 | Kaestle, Gunnar | Method and system for demand control in the low-voltage grid |
| DE102010015276A1 (en) * | 2010-04-15 | 2011-10-20 | A. Eberle Gmbh & Co. Kg | Control / regulation of the secondary voltage of local power transformers through the use of line-commutated inverters |
| DE102010040969A1 (en) * | 2010-09-17 | 2012-03-22 | Siemens Aktiengesellschaft | Transformer device i.e. low voltage transformer, for setting of low voltage in power supply region of supply network, has adding device designed for adding supplementary voltage on lines of secondary or primary line system |
-
2012
- 2012-02-15 DE DE201210202273 patent/DE102012202273A1/en not_active Ceased
-
2013
- 2013-02-13 CN CN201380009566.4A patent/CN104115388A/en active Pending
- 2013-02-13 EP EP13704926.8A patent/EP2801148A1/en not_active Withdrawn
- 2013-02-13 WO PCT/EP2013/052812 patent/WO2013120866A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0064642B1 (en) * | 1981-05-02 | 1986-07-30 | Heidelberger Druckmaschinen Aktiengesellschaft | Electric safety device for the control of a printing machine |
| US5736827A (en) * | 1992-04-30 | 1998-04-07 | Maschinenfabrik Reinhausen Gmbh | Motor driven step switch |
| CN2168277Y (en) * | 1993-05-30 | 1994-06-08 | 周楚康 | Voltage-stabilizing controlling transformer |
| CN2328111Y (en) * | 1998-05-12 | 1999-07-07 | 沈阳工业学院 | Small low voltage single phase distributor automatic with voltage regulator by load |
| WO2002086647A2 (en) * | 2001-04-20 | 2002-10-31 | Maschinenfabrik Reinhausen Gmbh | Arrangement for automatically influencing a mains supply and motor drive for said arrangement |
| CN101553766A (en) * | 2006-11-17 | 2009-10-07 | Abb研究有限公司 | Voltage control for electric power systems |
| DE102009014243A1 (en) * | 2009-03-20 | 2010-09-23 | A. Eberle Gmbh & Co. Kg | Local power transformer or circuit for electrical distribution transformer for control or regulation of voltage range of every phase for low voltage level, is provided with distribution transformer with primary and secondary coiling |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2801148A1 (en) | 2014-11-12 |
| WO2013120866A1 (en) | 2013-08-22 |
| DE102012202273A1 (en) | 2013-08-22 |
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