CN107196350A - A kind of active power real-time control apparatus with controlled series resistance - Google Patents
A kind of active power real-time control apparatus with controlled series resistance Download PDFInfo
- Publication number
- CN107196350A CN107196350A CN201710576912.7A CN201710576912A CN107196350A CN 107196350 A CN107196350 A CN 107196350A CN 201710576912 A CN201710576912 A CN 201710576912A CN 107196350 A CN107196350 A CN 107196350A
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- Prior art keywords
- transverter
- controlled series
- direct current
- control apparatus
- converter
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The embodiment of the present invention provides a kind of active power real-time control apparatus with controlled series resistance, including：Direct current manipulates unit；The direct current manipulation unit includes：First transverter, the second transverter, at least one controlled series resistor；The DC side of first transverter connects the DC side of second transverter by the controlled series resistor in parallel；The AC of first transverter is connected with the AC of second transverter, by setting the quantity of controlled series capacitor in parallel or realizing the regulation to ac transmission power by the coordination control of the first transverter and the second transverter, long range direct current transportation need not be carried out, solving prior art needs the ac transmission to script long range to be transformed into the technical problem that direct current transportation net could realize the regulation of power.
Description
Technical field
Dress is controlled in real time the present invention relates to field of distribution network, more particularly to a kind of active power with controlled series resistance
Put.
Background technology
In the high pressures such as traditional 110kV, 220kV, 500kV and ultrahigh-voltage alternating-current transmission system, transmission line of electricity is opened and cut
Except generally being manipulated by AC circuit breaker, as shown in Figure 1.Transmission line of electricity power output is distributed by nature trend, and
Determined by line impedance, load parameter.It is difficult that Transmission Lines power is carried out in fact by mechanical AC circuit breaker
When control.
In modern power systems, technology of transmission of electricity is mixed using alternating current-direct current.Direct current transportation principle is to first pass through fairing
Alternating current is changed into direct current, by the transmission of electricity of hundreds of kilometer or more long transmission line, then by inverter by direct current be changed into hand over
Stream electricity.One of sharpest edges of direct current transportation are exactly the size and Orientation for being capable of controlling transmission power in real time.
This HVDC Transmission Technology needs to carry out by the transmission of electricity of hundreds of kilometer or more long transmission line, that is to say, that need
The regulation of power could be realized by being transformed into direct current transportation net to the ac transmission of script long range.Therefore, prior art needs
Being transformed into direct current transportation net to the ac transmission of script long range could realize that the regulation of power is those skilled in the art's needs
The technical problem of solution.
The content of the invention
It is existing for solving the embodiments of the invention provide a kind of active power real-time control apparatus with controlled series resistance
There is technology to need the ac transmission to script long range to be transformed into the technical problem that direct current transportation net could realize the regulation of power.
The embodiment of the present invention provides a kind of active power real-time control apparatus with controlled series resistance, including：Direct current is grasped
Control unit；The direct current manipulation unit includes：First transverter, the second transverter, at least one controlled series resistor, it is described
The quantity of controlled series resistor and the power output of the active power real-time control apparatus with controlled series resistance possess
Incidence relation；
The DC side of first transverter connects second transverter by the controlled series resistor in parallel
DC side；
The AC of first transverter is connected with the AC of second transverter.
Preferably, first transverter is rectifier, and second transverter is inverter.
Preferably, the direct current manipulation unit also includes：Antiparallel all-controlling power electronics device；
The controlled series resistor after the antiparallel all-controlling power electronics device series connection with being connected described second
The DC side of transverter.
Preferably, the all-controlling power electronics device is specially IGCT or transistor or metal-oxide-semiconductor or IBGT.
Preferably, the direct current manipulation unit also includes the first converter power transformer and the second converter power transformer；
First converter power transformer is connected with the AC of first transverter；
Second converter power transformer is connected with the AC of second transverter.
Preferably, the embodiment of the present invention also includes exchange manipulation unit；
The exchange manipulation unit includes AC circuit breaker；
The exchange manipulation unit is in parallel with direct current manipulation unit.
Preferably, one end that one end of the exchange manipulation unit manipulates unit by substation bus bar and the direct current connects
Connect；
The other end of the exchange manipulation unit is connected by circuit side bus with the other end that the direct current manipulates unit.
Preferably, the first Converter DC-side DC voltage EdrCalculation formula be：
Edr=K0(Ercosα-Xr)-RrId
Wherein, K0For the coefficient determined by the mode of connection of the commutating circuit of the first transverter, RrFor the flat ripple reactance of direct current and
The corresponding resistance of loss of first converter power transformer and the first transverter, IdFor DC current, EdrFor the first transverter direct current
Side DC voltage, ErFor the alternating voltage root-mean-square valve of the first transverter AC, β is respectively the Trigger Angle of the first transverter, Xr
For the commutating reactance of the first converter power transformer.
Preferably, the second Converter DC-side DC voltage EdiCalculation formula be：
Edi=K0(Eicosβ+Xi+XL)+(Ri+RL)Id
Wherein, K0For the coefficient determined by the mode of connection of the commutating circuit of transverter, RiRespectively the flat ripple reactance of direct current and
The corresponding resistance of loss of second converter power transformer and the second transverter, IdFor DC current, EdiFor the second transverter direct current
Side DC voltage, ErFor the alternating voltage root-mean-square valve of the second converter power transformer DC side, XiFor the commutation of the second converter power transformer
Reactance, β is the Trigger Angle of the second transverter, RLAnd XLThe respectively resistance of transmission line of electricity and reactance.
Preferably, the DC current IdCalculation formula be：
Wherein, IdFor DC current, Edr、EdiRespectively the first transverter, the second Converter DC-side DC voltage, R is
The resistance of the single controlled series resistor, m is the quantity of the controlled series resistor in parallel.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
The embodiment of the present invention provides a kind of active power real-time control apparatus with controlled series resistance, including：Direct current is grasped
Control unit；The direct current manipulation unit includes：First transverter, the second transverter, at least one controlled series resistor；It is described
The DC side of first transverter connects the DC side of second transverter by the controlled series resistor in parallel；It is described
The AC of first transverter is connected with the AC of second transverter, by the number for setting controlled series capacitor in parallel
Amount realizes the regulation to ac transmission power by the coordination control of the first transverter and the second transverter, it is not necessary to carry out
Long range direct current transportation, solving prior art needs the ac transmission to script long range to be transformed into direct current transportation net ability in fact
The technical problem of the regulation of existing power.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the distribution line figure that existing switch is manipulated that the embodiment of the present invention is used to illustrate；
Fig. 2 is one of a kind of active power real-time control apparatus with controlled series resistance provided in an embodiment of the present invention
The schematic diagram of embodiment；
Fig. 3 is another for a kind of active power real-time control apparatus with controlled series resistance provided in an embodiment of the present invention
The schematic diagram of individual embodiment；
Fig. 4 is another for a kind of active power real-time control apparatus with controlled series resistance provided in an embodiment of the present invention
Direct current in individual embodiment manipulates the schematic diagram of unit equivalent circuit；
Wherein, reference is as follows：
1st, substation bus bar；2nd, the first converter power transformer；3rd, the first transverter；4th, controlled series resistor；5th, full-control type
Power electronic devices；6th, the second transverter；7th, the second converter power transformer；8th, AC circuit breaker；9th, circuit side bus.
Embodiment
It is existing for solving the embodiments of the invention provide a kind of active power real-time control apparatus with controlled series resistance
There is technology to need the ac transmission to script long range to be transformed into the technical problem that direct current transportation net could realize the regulation of power.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of embodiment of the invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Referring to Fig. 2, the embodiment of the present invention provides a kind of active power real-time control apparatus with controlled series resistance
One embodiment, including：Direct current manipulates unit；Direct current manipulation unit includes：First transverter 3, the second transverter 6, at least one
Individual controlled series resistor 4, the quantity of controlled series resistor 4 and having with controlled series resistance provided in an embodiment of the present invention
The power output of work(power real-time control apparatus possesses incidence relation；
The DC side of first transverter 3 connects the DC side of the second transverter 6 by controlled series resistor 4 in parallel；
The AC of first transverter 3 is connected with the AC of the second transverter 6.
Above is to a kind of active power real-time control apparatus with controlled series resistance provided in an embodiment of the present invention
One embodiment is described in detail, below by a kind of wattful power with controlled series resistance provided in an embodiment of the present invention
Another embodiment of rate real-time control apparatus is explained in detail.
Referring to Fig. 3, the embodiment of the present invention provides a kind of active power real-time control apparatus with controlled series resistance
Another embodiment, including：Direct current manipulates unit；Direct current manipulation unit includes：First transverter 3, the second transverter 6, at least
One controlled series resistor 4, the quantity of controlled series resistor 4 is with provided in an embodiment of the present invention with controlled series resistance
The power output of active power real-time control apparatus possesses incidence relation；
The DC side of first transverter 3 connects the DC side of the second transverter 6 by controlled series resistor 4 in parallel；
The AC of first transverter 3 is connected with the AC of the second transverter 6.
First transverter 3 is rectifier, and the second transverter 6 is inverter.
Direct current manipulation unit also includes：Antiparallel all-controlling power electronics device 5；
Controlled series resistor 4 is connected the straight of the second transverter 6 after being connected with antiparallel all-controlling power electronics device 5
Flow side.
All-controlling power electronics device 5 is specially IGCT or transistor or metal-oxide-semiconductor or IBGT.
Direct current manipulation unit also includes the first converter power transformer 2 and the second converter power transformer 7；
First converter power transformer 2 is connected with the AC of the first transverter 3；
Second converter power transformer 7 is connected with the AC of the second transverter 6.
The embodiment of the present invention also includes exchange manipulation unit；
Exchange manipulation unit includes AC circuit breaker 8；
Exchange manipulation unit is in parallel with direct current manipulation unit.
One end of exchange manipulation unit is connected by substation bus bar 1 with one end that direct current manipulates unit；
The other end of exchange manipulation unit is connected by circuit side bus 9 with the other end that direct current manipulates unit.
Referring to Fig. 4, simplifying to the circuit of direct current component of the embodiment of the present invention, the direct current of general type can be obtained
Manipulate the circuit (Fig. 4) of unit.According to the circuit after simplification, the calculation formula of some parameters can be derived.
First Converter DC-side DC voltage EdrCalculation formula be：
Edr=K0(Ercosα-Xr)-RrId
Wherein, K0For the coefficient determined by the mode of connection of the commutating circuit of the first transverter, RrFor the flat ripple reactance of direct current and
The corresponding resistance of loss of first converter power transformer and the first transverter, IdFor DC current, EdrFor the first transverter direct current
Side DC voltage, ErFor the alternating voltage root-mean-square valve of the first transverter AC, β is respectively the Trigger Angle of the first transverter, Xr
For the commutating reactance of the first converter power transformer.
Second Converter DC-side DC voltage EdiCalculation formula be：
Edi=K0(Eicosβ+Xi+XL)+(Ri+RL)Id
Wherein, K0For the coefficient determined by the mode of connection of the commutating circuit of transverter, RiRespectively the flat ripple reactance of direct current and
The corresponding resistance of loss of second converter power transformer and the second transverter, IdFor DC current, EdiFor the second transverter direct current
Side DC voltage, ErFor the alternating voltage root-mean-square valve of the second converter power transformer DC side, XiFor the commutation of the second converter power transformer
Reactance, β is the Trigger Angle of the second transverter, RLAnd XLThe respectively resistance of transmission line of electricity and reactance.
DC current IdCalculation formula be：
Wherein, IdFor DC current, Edr、EdiRespectively the first transverter, the second Converter DC-side DC voltage, R is
The resistance of single controlled series resistor, m is the quantity of controlled series resistor in parallel.
Formula is calculated from above-mentioned DC current, DC current can in real time be adjusted using two ways：1) lead to
The coordination control of over commutation device and inverter；2) controlled by the electronization of the resistance of controlled series resistance.For the first tune
Section mode, typically by controlling the Trigger Angle of rectifier, inverter to realize.It is in parallel by changing for second of regulative mode
The number of resistor realizes that resistor in parallel is more, and D.C. resistance is smaller, DC current is bigger；Resistor in parallel is got over
Few, D.C. resistance is bigger, and DC current is smaller.
It is real by equipping the real-time adjusting apparatus of active power for each transmission line of electricity in power plant or transformer station
Existing direct current manipulation unit is run with manipulation elements exchange is exchanged, standby each other.Direct current component is in very short distance by " whole
Stream-inversion " process, realizes the manual control to power output using direct current transportation principle, realizes the trend of AC transmission system
Control.
Technical scheme is as follows：
Active power real-time control apparatus with controlled series resistance transmission line of electricity is manipulated by exchange manipulation unit and direct current
Unit is formed in parallel.Exchange manipulation unit is made up of a breaker and its necessary disconnecting switch；Direct current manipulates unit by whole
Convertor transformer, rectifier, multiple controlled series resistor, inverter and contravariant transformers in parallel are constituted, and direct current manipulation is single
The transverter of member both can be used as rectifier, be also used as inverter.The real-time adjusting apparatus input of transmission line of electricity active power
It is connected with substation bus bar, output end is connected with transmission line of electricity.Realize that traditional natural trend is exported by exchanging manipulation unit, or
It is that the control to active power of output is reached by direct current manipulation unit.
Active power real-time control apparatus with controlled series resistance transmission line of electricity, is an electricity for replacing conventional circuit breaker
Power electronic installation.It includes AC circuit breaker, rectifier transformer, rectifier, multiple controlled series resistors in parallel, inverter
And contravariant transformer：Exchange manipulation unit where AC circuit breaker is carried out with the direct current manipulation unit where commutation inversion unit
Parallel connection, and by determine electric current, the control mode determined voltage, determine power, or by changing the number realization of resistors in parallel to defeated
The artificial adjustment of electric line transimission power.By exchanging manipulation unit isolated operation, electric energy will be passed by traditional natural trend
Defeated, active power distribution is determined by line impedance and load parameter completely；Unit isolated operation is manipulated by direct current, using straight
Progress of " rectification-inversion " process to active power is controlled in real time in stream transmission of electricity principle, can be achieved to transmission line of electricity active power
The purpose of control.
The advantage of the invention is that：By carrying out innovative design to AC transmission system, by having with controlled series resistance
Work(power real-time control apparatus is carried between AC network bus and transmission line of electricity, using in device exchange manipulate unit with
Direct current manipulation unit realizes that the natural trend conveying of electric energy is standby each other with active power regulation.When exchange manipulation unit is individually transported
When row and control, transmission line of electricity forms natural power according to the size power output of circuit and load impedance；When direct current manipulates list
During first isolated operation, using the control method for determining electric current, determining voltage and determining power or the number by changing resistors in parallel,
The size and Orientation of transmission line of electricity power output can be controlled, controlled power is formed.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of active power real-time control apparatus with controlled series resistance, it is characterised in that including：Direct current manipulates unit；
The direct current manipulation unit includes：First transverter, the second transverter, at least one controlled series resistor, the controllable string
The quantity of connection resistor possesses with the power output of the active power real-time control apparatus with controlled series resistance to be associated
System；
The DC side of first transverter connects the straight of second transverter by the controlled series resistor in parallel
Flow side；
The AC of first transverter is connected with the AC of second transverter.
2. a kind of active power real-time control apparatus with controlled series resistance according to claim 1, it is characterised in that
First transverter is rectifier, and second transverter is inverter.
3. a kind of active power real-time control apparatus with controlled series resistance according to claim 1, it is characterised in that
The direct current manipulation unit also includes：Antiparallel all-controlling power electronics device；
The controlled series resistor after the antiparallel all-controlling power electronics device series connection with being connected second change of current
The DC side of device.
4. a kind of active power real-time control apparatus with controlled series resistance according to claim 3, it is characterised in that
The all-controlling power electronics device is specially IGCT or transistor or metal-oxide-semiconductor or IBGT.
5. a kind of active power real-time control apparatus with controlled series resistance according to claim 1, it is characterised in that
The direct current manipulation unit also includes the first converter power transformer and the second converter power transformer；
First converter power transformer is connected with the AC of first transverter；
Second converter power transformer is connected with the AC of second transverter.
6. a kind of active power real-time control apparatus with controlled series resistance according to claim 1, it is characterised in that
Also include exchange manipulation unit；
The exchange manipulation unit includes AC circuit breaker；
The exchange manipulation unit is in parallel with direct current manipulation unit.
7. a kind of active power real-time control apparatus with controlled series resistance according to claim 6, it is characterised in that
One end of the exchange manipulation unit is connected by substation bus bar with one end that the direct current manipulates unit；
The other end of the exchange manipulation unit is connected by circuit side bus with the other end that the direct current manipulates unit.
8. a kind of active power real-time control apparatus with controlled series resistance according to claim 1, it is characterised in that
The first Converter DC-side DC voltage EdrCalculation formula be：
Edr=K0(Ercosα-Xr)-RrId
Wherein, K0For the coefficient determined by the mode of connection of the commutating circuit of the first transverter, RrFor the flat ripple reactance of direct current and first
The corresponding resistance of loss of converter power transformer and the first transverter, IdFor DC current, EdrIt is straight for the first Converter DC-side
Flow voltage, ErFor the alternating voltage root-mean-square valve of the first transverter AC, β is respectively the Trigger Angle of the first transverter, XrFor
The commutating reactance of one converter power transformer.
9. a kind of active power real-time control apparatus with controlled series resistance according to claim 1, it is characterised in that
The second Converter DC-side DC voltage EdiCalculation formula be：
Edi=K0(Eicosβ+Xi+XL)+(Ri+RL)Id
Wherein, K0For the coefficient determined by the mode of connection of the commutating circuit of transverter, RiThe respectively flat ripple reactance of direct current and second
The corresponding resistance of loss of converter power transformer and the second transverter, IdFor DC current, EdiIt is straight for the second Converter DC-side
Flow voltage, ErFor the alternating voltage root-mean-square valve of the second converter power transformer DC side, XiFor the commutation electricity of the second converter power transformer
Anti-, β is the Trigger Angle of the second transverter, RLAnd XLThe respectively resistance of transmission line of electricity and reactance.
10. a kind of active power with controlled series resistance according to any one in claim 8 or 9 controls dress in real time
Put, it is characterised in that the DC current IdCalculation formula be：
<mrow>
<msub>
<mi>I</mi>
<mi>d</mi>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>E</mi>
<mrow>
<mi>d</mi>
<mi>r</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>E</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
</mrow>
</msub>
</mrow>
<mfrac>
<mi>R</mi>
<mi>m</mi>
</mfrac>
</mfrac>
</mrow>
Wherein, IdFor DC current, Edr、EdiRespectively the first transverter, the second Converter DC-side DC voltage, R are single
The resistance of the controlled series resistor, m is the quantity of the controlled series resistor in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576912.7A CN107196350A (en) | 2017-07-14 | 2017-07-14 | A kind of active power real-time control apparatus with controlled series resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576912.7A CN107196350A (en) | 2017-07-14 | 2017-07-14 | A kind of active power real-time control apparatus with controlled series resistance |
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| Publication Number | Publication Date |
|---|---|
| CN107196350A true CN107196350A (en) | 2017-09-22 |
Family
ID=59882166
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710576912.7A Pending CN107196350A (en) | 2017-07-14 | 2017-07-14 | A kind of active power real-time control apparatus with controlled series resistance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998546A (en) * | 2011-09-13 | 2013-03-27 | 茂迪股份有限公司 | Commercial power simulator |
| CN106208080A (en) * | 2016-09-07 | 2016-12-07 | 广东工业大学 | A kind of low-voltage circuit active power regulator control system |
| CN106208078A (en) * | 2016-09-07 | 2016-12-07 | 广东工业大学 | A kind of active power regulator control system controlled based on Multi-coil transformer and power |
| CN106208079A (en) * | 2016-09-07 | 2016-12-07 | 广东工业大学 | A kind of band D.C. resistance and the active power regulator control system of branch resistance |
| CN106452110A (en) * | 2016-11-18 | 2017-02-22 | 广州智光电气股份有限公司 | Power conversion apparatus and microgrid |
-
2017
- 2017-07-14 CN CN201710576912.7A patent/CN107196350A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998546A (en) * | 2011-09-13 | 2013-03-27 | 茂迪股份有限公司 | Commercial power simulator |
| CN106208080A (en) * | 2016-09-07 | 2016-12-07 | 广东工业大学 | A kind of low-voltage circuit active power regulator control system |
| CN106208078A (en) * | 2016-09-07 | 2016-12-07 | 广东工业大学 | A kind of active power regulator control system controlled based on Multi-coil transformer and power |
| CN106208079A (en) * | 2016-09-07 | 2016-12-07 | 广东工业大学 | A kind of band D.C. resistance and the active power regulator control system of branch resistance |
| CN106452110A (en) * | 2016-11-18 | 2017-02-22 | 广州智光电气股份有限公司 | Power conversion apparatus and microgrid |
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Application publication date: 20170922 |