CN106208074B - It is a kind of to boost and the integrated transformer of power flowcontrol - Google Patents
It is a kind of to boost and the integrated transformer of power flowcontrol Download PDFInfo
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- CN106208074B CN106208074B CN201610644487.6A CN201610644487A CN106208074B CN 106208074 B CN106208074 B CN 106208074B CN 201610644487 A CN201610644487 A CN 201610644487A CN 106208074 B CN106208074 B CN 106208074B
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- phase
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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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The present invention relates to Automation of Electric Systems, more particularly to a kind of boosting and the integrated transformer of power flowcontrol, including two-winding transformer, the two-winding transformer includes the primary side winding with adjustable winding and auto-transformer, and the vice-side winding with adjustable winding；The adjustable winding of primary side and the secondary adjustable winding in side access electric system, step-up transformer and power flow regulating device as electric system.The boosting and the integrated transformer of power flowcontrol are equivalent to and have sealed in the voltage source an of amplitude, phase-adjustable in system head end, and function is similar to THE UPFC UPFC, therefore the active and reactive trend of independent regulating system.Using on-load voltage regulating switch regulation technology, regulative mode is flexible, high reliablity.Collecting system step-up transformer, power flow regulating device are integrated, and at low cost, occupied area is small.
Description
Technical field
The invention belongs to transmission line of electricity field of automation technology more particularly to a kind of boostings and the integrated change of power flowcontrol
Depressor.
Background technique
Currently, the power grid in China just gradually gos deep into large-sized unit, super-pressure, long-distance sand transport and the direction of trans-regional interconnection
Development, the interconnection of regional power grid make power grid popularization, and will cause trend thereupon is unevenly distributed weighing apparatus.It is transmitted in trend
When unbalanced extremely serious, it is possible to it will cause a power transmission line near or above its Transmission Constraints edge, and another
Transmission line of electricity but only reached it can transmission capacity sub-fraction, this not only result in equipment using unreasonable, more having can
The safe operation of whole system can be will affect.During the transmission line of electricity of interconnection interregional Power Exchange, it is also desirable to pass through
Improve the ability of Power Exchange to the control action of trend.Therefore, under this large-scale operation of power networks, concern and research
Hot spot and one of difficult point be how flexible control system trend, improve line transmission capacity.At present at home and abroad, in system
The power flow regulating means of application have thuristor throw-in and throw-off series capacitor TCSC, phase-shifting transformer PST and THE UPFC
(Unified Power Flow Controller,UPFC)。
In China, the power flow regulating means being most widely used are exactly thuristor throw-in and throw-off series capacitor TCSC, by
The equivalent impedance in a capacitor C change route is sealed in route, to adjust trend.Thuristor throw-in and throw-off series capacitor TCSC
Maximum disadvantage is exactly because having sealed in a capacitor in the line, to there are problems that sub-synchronous oscillation.In addition, TCSC device
Occupied area it is larger.
At abroad, the power flow regulating means being most widely used are phase-shifting transformer PST, be broadly divided into lateral phase shifter,
Longitudinal phase shifter and oblique phase shifter.Lateral phase shifter, longitudinal only one regulated variable of phase shifter, to the control mode of trend
It is not flexible.Oblique phase shifter mostly uses power electronics control mode pressure regulation, therefore such phase shifter is at high cost, reliability is low, no
It is applicable in high pressure, extra-high voltage grid.
THE UPFC UPFC is to seal in amplitude, a phase in the line using power electronic devices switch to connect
Continue adjustable equivalent source, fast response time, control is flexibly.But since UPFC uses power electronics control mode, it is being improved
While capacity, installation cost can be greatly improved, and reliability can reduce, thus also be not suitable for large-scale promotion application at present.
The present Research of above-mentioned several typical power flow regulating devices, that there are regulative modes is inflexible or at high cost,
The problems such as reliability is low.
Summary of the invention
The object of the present invention is to provide a kind of two-winding transformer with on-load voltage regulating switch and auto-transformer function,
Realize the function of step-up transformer and power flow regulating device in transmission line of electricity.Using on-load voltage regulating switch regulation technology, high reliablity,
Collecting system step-up transformer, power flow regulating device are integrated, and at low cost, occupied area is small.
To achieve the above object, the technical solution adopted by the present invention is that: it is a kind of boosting and the integrated transformation of power flowcontrol
Device, including two-winding transformer, the two-winding transformer include the primary side winding with adjustable winding and auto-transformer, with
And the vice-side winding with adjustable winding；The adjustable winding of primary side and the secondary adjustable winding in side access transmission line of electricity, are used as transmission of electricity
The step-up transformer and power flow regulating device of route.
In the boosting and the integrated transformer of power flowcontrol, the auto-transformer of the primary side winding is as institute
The step-up transformer for stating transmission line of electricity provides the head end voltage of transmission line of electricity.
In the boosting and the integrated transformer of power flowcontrol, the adjustable winding of primary side is on-load voltage regulating switch
One group of tap of the primary side auto-transformer low-pressure section of connection, the pair adjustable winding in side are the pair of on-load voltage regulating switch connection
One group of tap of side winding；The adjustable winding of primary side and the secondary adjustable windings in series in side access transmission line of electricity, provide the transmission of electricity
The head end offset voltage of route, the power flow regulating device as transmission line of electricity.
In the boosting and the integrated transformer of power flowcontrol, by changing the adjustable winding of primary side and secondary side
The tap switching position of adjustable winding adjusts the amplitude and phase of the head end offset voltage of the transmission line of electricity, realizes to described
The regulation of the active and reactive trend of transmission line of electricity.
To make those skilled in the art be clearer to understand summary of the invention, technical solution of the present invention and effect are made furtherly
It is bright.The above-mentioned integrated transformer of boosting and power flowcontrol, basic structure are a two-winding transformer.Primary side winding is
One auto-transformer can be used as the step-up transformer of transmission line of electricity, provide line, it can be achieved that boost function from low pressure to high pressure
The head end voltage on road.Vice-side winding has one group of tap, is connected by on-load voltage regulating switch, this part of winding can as secondary side
Adjust winding.The low-pressure section of primary side winding is connected with one group of tap by on-load voltage regulating switch, this part of winding conduct
Primary side is adjustable winding.In transformer primary side and the adjustable windings in series access transmission line of electricity on secondary side, composition transmission line of electricity head end
Offset voltage adjusts the trend of transmission line of electricity.By changing the tap switching position of the adjustable winding of transformer primary side and secondary side,
Can separately adjustable transmission line of electricity head end offset voltage amplitude and phase, so as to the active and reactive of separately adjustable transmission line of electricity
Trend.Using mature on-load voltage regulating switch regulation technology, high reliablity.Collect transmission line of electricity step-up transformer, power flow regulating device
It is integrated, at low cost, occupied area is small.
Beneficial effects of the present invention: the integrated transformer of boosting and power flowcontrol of the invention is equivalent in power transmission line
Road head end has sealed in the voltage source an of amplitude, phase-adjustable, and function is similar to THE UPFC UPFC, therefore can be independent
Adjusting transmission line of electricity active and reactive trend.Using on-load voltage regulating switch regulation technology, regulative mode is flexible, high reliablity.
Integrate transmission line of electricity step-up transformer, power flow regulating device, at low cost, occupied area is small.
Detailed description of the invention
Fig. 1 is that the boosting of one embodiment of the invention and power flowcontrol integrated transformer access the topological of transmission line of electricity and tie
Composition；
Fig. 2 is the core structure of one embodiment of the invention single-phase integral transformer.
Specific embodiment
Embodiments of the present invention are described in detail with reference to the accompanying drawing.
Following disclosure provides different embodiment or example and is used to realize different structure of the invention.In order to simplify this
The disclosure of invention is hereinafter described the component of specific examples and setting, and they are merely examples, and purpose is not lain in
The limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.This repetition is for letter
Change and clear purpose itself do not indicate the relationship between discussed various embodiments and/or setting.In addition, the present invention mentions
The example of the various specific techniques and material that have supplied, but those of ordinary skill in the art may be aware that other techniques are answered
With the use of property and/or other materials.
Embodiment
The present embodiment uses following technical solution, a kind of to boost and the integrated transformer of power flowcontrol, including double wrap
Group transformer, the two-winding transformer include the primary side winding with adjustable winding and auto-transformer, and with adjustable
The vice-side winding of winding；The adjustable winding of primary side and the secondary adjustable winding in side access transmission line of electricity, the boosting as transmission line of electricity
Transformer and power flow regulating device.
Further, step-up transformer of the auto-transformer of the primary side winding as the transmission line of electricity provides defeated
The head end voltage of electric line.
Further, the adjustable winding of the primary side is the primary side auto-transformer low-pressure section of on-load voltage regulating switch connection
One group of tap, the pair adjustable winding in side are one group of tap of the vice-side winding of on-load voltage regulating switch connection；The primary side is adjustable
Winding and the secondary adjustable windings in series in side access transmission line of electricity, the head end offset voltage of the transmission line of electricity are provided, as power transmission line
The power flow regulating device on road.
Further, it by changing the tap switching position of the adjustable winding of the adjustable winding of primary side and secondary side, adjusts
The amplitude and phase of the head end offset voltage of the transmission line of electricity realize the regulation to the active and reactive trend of the transmission line of electricity.
The present embodiment mainly passes through the two-winding transformer for having on-load voltage regulating switch and auto-transformer function, real
The function of step-up transformer and power flow regulating device in existing transmission line of electricity.Its basic structure be a two-winding transformer, primary side around
Group is an auto-transformer, the step-up transformer as system.Vice-side winding and primary side winding all have one group of tap, pass through
On-load voltage regulating switch connection, is composed in series the offset voltage of transmission line of electricity head end, the power flow regulating device as transmission line of electricity.Pass through
Change the tap switching position of the adjustable winding on transformer primary side and secondary side, it can separately adjustable transmission line of electricity head end offset voltage
Amplitude and phase, so as to the active and reactive trend of separately adjustable transmission line of electricity.
When it is implemented, as shown in Figure 1, being that the present embodiment boosting and the integrated transformer of power flowcontrol show in dotted line frame
It is intended to, primary side winding is the auto-transformer with adjustable tap, and vice-side winding has adjustable tap, passes through certain connection side
Formula, integrated transformer access transmission line of electricity, it can be achieved that step-up transformer, power flow regulating device double action.
Primary side winding is an auto-transformer, it can be achieved that boost function from low pressure to high pressure, the boosting as system
Transformer provides the head end voltage of transmission line of electricity.
Vice-side winding has one group of tap, is connected by on-load voltage regulating switch, this part of winding as secondary side it is adjustable around
Group.
The low-pressure section of primary side winding is connected with one group of tap by on-load voltage regulating switch, this part of winding is made
For the adjustable winding of primary side.In transformer primary side and the adjustable windings in series access transmission line of electricity on secondary side, transmission line of electricity head end is formed
Offset voltage, adjust transmission line of electricity trend.
It, can separately adjustable transmission line of electricity head by changing the tap switching position of the adjustable winding of transformer primary side and secondary side
The amplitude and phase of end compensating voltage, so as to the active and reactive trend of separately adjustable transmission line of electricity.
Using on-load voltage regulating switch regulation technology, high reliablity.
Parameter each in Fig. 1 is illustrated below:
Three-phase voltage for transmission line of electricity head end, before boosting；
Three-phase voltage for transmission line of electricity head end, after transformer provided in this embodiment boosting；
For transmission line of electricity head end, through the compensated three-phase of transformer series provided in this embodiment
Voltage；
Three-phase voltage for transmission line of electricity end, before decompression；
Three-phase voltage for transmission line of electricity end, after decompression.
TsFor series compensating voltage to be coupled to the isolating transformer on route；
T is the step-down transformer of transmission line of electricity end；
XLFor the equivalent reactance of transmission line of electricity.
And the collection proposed for the present embodiment boosts, each parameter of the integrated transformer of power flowcontrol is explained as follows: by
There is complete symmetry in the three-phase structure of the transformer, analyzed by taking A phase as an example.There are four stationary contacts for primary side winding, divide
It is not A2, A1, A0, X, one passes through the adjustable moving contact A of on-load voltage regulating switchM(± k grades of adjusting)；Vice-side winding have one it is quiet
Only contact: a0, one passes through the adjustable moving contact A of on-load voltage regulating switchm(± k grades of adjusting).
The embodiment integrated transformer mode of connection is as follows:
1. the stationary contacts A of primary side winding2、B2、C2It is respectively connected to A, B, C three-phase system voltage
2. the stationary contacts A of primary side winding1、B1、C1It is respectively connected to the T of A, B, C three-phase isolation transformersThe head end of primary side.
3. the stationary contacts X-Y-Z of primary side winding is grounded.
4. the stationary contacts A of primary side winding0、B0、C0It is respectively connected to system A, B, C three-phase series transformer TsThe head on secondary side
End.
5. the stationary contacts a of vice-side winding0、b0、c0It is respectively connected to system B, C, A three-phase series transformer TsThe end on secondary side
End.
The moving contact A of 6.A phase primary side windingMWith C phase vice-side winding moving contact CmIt is connected.
The moving contact B of 7.B phase primary side windingMWith A phase vice-side winding moving contact AmIt is connected.
The moving contact C of 8.C phase primary side windingMWith B phase vice-side winding moving contact BmIt is connected.
By the moving contact A for adjusting the present embodiment transformerM、BM、CMAnd Am、Bm、CmPosition, i.e., changeable string mends defeated
The amplitude and phase of the voltage of electric line head end, so as to change transmission line of electricity head end voltageAmplitude
And phase, achieve the purpose that adjust the active and reactive trend of transmission line of electricity.
The Three-Phase Transformer of the present embodiment has complete symmetry, therefore illustrates its iron core knot by taking A phase core structure as an example
Structure.As shown in Fig. 2, basic structure is a two-winding transformer.
There are four stationary contacts for primary side winding: A2, A1, A0, X, one passes through the adjustable moving contact A of on-load voltage regulating switchM
(± k grades of adjusting)；Vice-side winding has stationary contacts: a0, one passes through the adjustable moving contact A of on-load voltage regulating switchm(± k grades
It adjusts).
A2- X accesses transmission line of electricity low-pressure side input voltage.
A1- X is exported after the boosting of the auto-transformer part of the present embodiment transformer, provides transmission line of electricity head end electricity
Pressure.
The winding N of transformer2=N3。
Adjusting the series k, winding N of transformer1And N2Relationship, can be designed according to actual needs.
The transformer that the present embodiment proposes:
(1) its boosting principle is the boosting principle of auto-transformer.
(2) its power flow regulating principle are as follows:
After transformer boosting and series compensation, the voltage expression of each phase of system is as follows:
Wherein, k1、k2By adjusting the position of on-load voltage regulating switch, size is all positive and negative adjustable.Thus it is equivalent to
Transmission line of electricity head end has sealed in the voltage source an of amplitude, phase-adjustable, and function is similar to THE UPFC UPFC, therefore
The independent active and reactive trend for adjusting transmission line of electricity.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
Although being described in conjunction with the accompanying a specific embodiment of the invention above, those of ordinary skill in the art should
Understand, these are merely examples, various deformation or modification can be made to these embodiments, without departing from original of the invention
Reason and essence.The scope of the present invention is only limited by the claims that follow.
Claims (1)
1. a kind of boosting and the integrated transformer of power flowcontrol, including two-winding transformer, which is characterized in that the double winding
Transformer includes the primary side winding with adjustable winding, and the vice-side winding with adjustable winding；Primary side winding is with can
The auto-transformer of tap is adjusted, realizes that the boost function from low pressure to high pressure provides defeated as the step-up transformer of transmission line of electricity
The head end voltage of electric line；Vice-side winding has one group of tap, is connected by on-load voltage regulating switch, this part of winding is as secondary
Side is adjustable winding；The low-pressure section of primary side winding is connected with one group of tap by on-load voltage regulating switch, this part of winding
As the adjustable winding of primary side；There are four stationary contacts and one to pass through the adjustable moving contact of on-load voltage regulating switch for primary side winding；
Vice-side winding has a stationary contacts and one to pass through the adjustable moving contact of on-load voltage regulating switch；The static touching of primary side winding
Head A2、B2、C2It is respectively connected to transmission line of electricity low-pressure side input voltage；The stationary contacts A of primary side winding1、B1、C1Self coupling is passed through in output
Transmission line of electricity head end voltage after transformer portion boosting, and it is respectively connected to system A, B, C three-phase isolation transformer TsPrimary side
Head end；Stationary contacts X, Y, Z of primary side winding are grounded；The stationary contacts A of primary side winding0、B0、C0It is respectively connected to A, B, C system three
It is isolated transformer TsThe head end on secondary side；The stationary contacts a of vice-side winding0、b0、c0It is respectively connected to the change of system B, C, A three-phase series
Depressor TsThe end on secondary side；The moving contact A of A phase primary side windingMWith C phase vice-side winding moving contact CmIt is connected；B phase primary side winding
Moving contact BMWith A phase vice-side winding moving contact AmIt is connected；The moving contact C of C phase primary side windingMWith B phase vice-side winding moving contact BmPhase
Even；By changing the tap switching position of the adjustable winding of the adjustable winding of primary side and secondary side, the head of the transmission line of electricity is adjusted
The amplitude and phase of end compensating voltage realize the regulation to the active and reactive trend of the transmission line of electricity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610644487.6A CN106208074B (en) | 2016-08-08 | 2016-08-08 | It is a kind of to boost and the integrated transformer of power flowcontrol |
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| CN201610644487.6A CN106208074B (en) | 2016-08-08 | 2016-08-08 | It is a kind of to boost and the integrated transformer of power flowcontrol |
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| CN106208074A CN106208074A (en) | 2016-12-07 |
| CN106208074B true CN106208074B (en) | 2019-01-29 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941259A (en) * | 2017-05-05 | 2017-07-11 | 秦伟喆 | A kind of line segment formula three-phase load unbalance adjustment and boosting loss-reducing and electricity-saving device |
| CN108922758A (en) * | 2018-07-09 | 2018-11-30 | 闫福录 | A kind of pluggable transformer of Split type three-phase and replacing options |
| CN112821403B (en) * | 2021-01-09 | 2023-10-03 | 华北电力大学（保定） | Single-phase or three-phase electromagnetic series type transmission line tidal current control topological circuit |
| CN115173426B (en) * | 2022-09-08 | 2022-11-18 | 国网智能电网研究院有限公司 | Voltage amplitude phase adjusting device and adjusting method |
| CN115986752B (en) * | 2023-02-03 | 2024-01-23 | 国网北京市电力公司 | Adjustable voltage source, power distribution system and power adjustment method of power distribution system |
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| CN103762599A (en) * | 2014-01-25 | 2014-04-30 | 孙崇山 | Transient impedance transformer based on alternating current voltage regulating electronic switch |
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| MX2015014681A (en) * | 2013-04-23 | 2016-06-10 | Varentec Inc | Dynamic power flow controllers. |
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|---|---|---|---|---|
| CN103762599A (en) * | 2014-01-25 | 2014-04-30 | 孙崇山 | Transient impedance transformer based on alternating current voltage regulating electronic switch |
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