CN105162105B - A kind of direct current network flow controller topology - Google Patents
A kind of direct current network flow controller topology Download PDFInfo
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- CN105162105B CN105162105B CN201510608338.XA CN201510608338A CN105162105B CN 105162105 B CN105162105 B CN 105162105B CN 201510608338 A CN201510608338 A CN 201510608338A CN 105162105 B CN105162105 B CN 105162105B
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Abstract
A kind of direct current network flow controller topology, by the first director switch module (11), the second director switch module (12) and full-bridge submodule (13) composition；First leading-out terminal of the first director switch module (11) is connected with the first leading-out terminal of the second director switch module (12), the first leading-out terminal (1) as the direct current network flow controller；Second leading-out terminal of the first director switch module (11) is connected with the first leading-out terminal (4) of full-bridge submodule (13), second leading-out terminal (2) of the tie point as the direct current network flow controller；Second leading-out terminal of the second director switch module (12) is connected with the second leading-out terminal (5) of full-bridge submodule (13), and the three terminal as the direct current network flow controller is sub (3).
Description
Technical field
The present invention relates to a kind of direct current network flow controller topology.
Background technology
With the shortage of traditional energy and the continuous aggravation of environmental degradation problem, countries in the world have realized that the profit of the energy
With must the clean energy resource transition such as from traditional energy to green regenerative energy sources with exploitation.In recent years, the new energy such as wind energy, solar energy
Source technology is developed rapidly, but because it has the characteristics that intermittent, unstability so that receive ultra-large new energy
Conventional art have become increasingly limited, it is necessary to future source of energy lattice are met using new technology, equipment and electric network composition
The profound change of office.And the multi-terminal direct current transmission system and direct current network technology based on customary DC and flexible direct current are that solve this
One of effective technology means of one problem.
Direct current network has 3 kinds of Basic Topologicals, respectively dendroid, ring-type and netted, a variety of basic structure combinations
For the direct current network of complexity.Containing ring, network structure direct current network in, containing mesh and redundancy, which greatly enhances be
The flexibility of system and reliability, but a plurality of transmission line of electricity is there may be between current conversion station so that the number of transmission line of electricity is more than
Current conversion station number, the trend on circuit is caused to only rely on the voltage of current conversion station, current control realizes effectively regulation, i.e. direct current
The power flowcontrol free degree is inadequate, and this proposes challenge for the power flowcontrol of whole network.Therefore, it is necessary to introduce extra direct current
Net power flow control devices, i.e. DC power flow controller, increase system control freedom degree, improve effective control energy of the system to trend
Power.
In recent years, some domestic and international researchers are with regard to DC power flow control problem, it is proposed that related power flow control devices,
Its basic thought is the parameter for changing branch of a network using semiconductor devices, so as to influence the constraints of system load flow, is reached
The purpose of control system trend distribution.According to its basic functional principle, resistive and the major class of voltage-type two can be divided into.Pass through switch
Switching, change and seal in the equivalent resistance of branch road, and then adjust the effect of branch current.Resistance is active consumption-type device
Part, it is generally large to seal in the excess power of resistance consumption, very uneconomical, is not considered typically in practical engineering application.
There are document (Mu Q, Liang J, Li Y L, et al.Power flow control devices in DC
Grids [C] // 2012IEEE Power and Energy Society General Meeting.San Diego, CA：
IEEE, 2012：1-7.Veilleux E, Ooi B T.Multiterminal HVDC with thyristor power-flow
Controller [J] .IEEE Transactions on Power Delivery, 2012,27 (3)：1205-1212.) propose
2 kinds of auxiliary voltage source topological structures, by converter power transformer take energy from AC system.In such structure, converter power transformer
Valve side needs to bear the high voltage bias of straight-flow system level, and the insulating Design to transformer brings larger difficulty, while also increases
Equipment cost is added.On the other hand, the introducing of more power electronic devices causes system operation loss increase, uneconomical.There is text
Offer (Mukherjee S, Jonsson T U, Subramanian S, et al.Apparatus for controlling the
electric power transmission in a HVDC transmission system[P].US
20130170255A1,2013.Juhlin L E.Power flow control in a meshed HVDC power
Transmission network [P] .US 20120033462Al, 2011.) a kind of DC/DC converters are proposed, both run
Mechanism is similar.Circuit structure mainly comprising taking energy portion point and change of current part, takes energy circuit to take energy from straight-flow system, utilizes modulation
Output AC voltage waveform is controlled, pulses thyristor bridge output DC voltage for adjusting after transformer transformation, then through three-phase six
Branch Power Flow is saved, the introducing that this topological structure needs also exist for more power electronic devices causes system operation loss increase.And
And multiple IGBT tandem workings are needed in direct current energy obtaining system, technical difficulty is larger.
The content of the invention
The present invention proposes a kind of new direct current network flow controller topology, and whole current conversion station can be made to possess DC power flow
While control ability, cost and running wastage are reduced.
Described direct current network flow controller topology is by the first director switch module, the second director switch module and full-bridge
Submodule forms.First leading-out terminal of the first director switch module and the first leading-out terminal of the second director switch module connect
Connect, as the first leading-out terminal of the direct current network flow controller, the second leading-out terminal of the first director switch module with
The first leading-out terminal connection of full-bridge submodule, second leading-out terminal of the tie point as the direct current network flow controller,
Second leading-out terminal of the second director switch module is connected with the second leading-out terminal of full-bridge submodule, as the direct current network
Three terminal of flow controller.
The first described director switch module by the first full-control type semiconductor devices, the second full-control type semiconductor devices and its
Respective anti-paralleled diode composition.The hair of the emitter stage of first full-control type semiconductor devices and the first full-control type semiconductor devices
Emitter-base bandgap grading connects, the first leading-out terminal of the colelctor electrode of the first full-control type semiconductor devices as the first director switch module, and second
Second leading-out terminal of the colelctor electrode of full-control type semiconductor devices as the first director switch module.
The second described director switch module by the 3rd full-control type semiconductor devices, the 4th full-control type semiconductor devices and its
Respective anti-paralleled diode composition.The emitter stage of 3rd full-control type semiconductor devices and the hair of the 4th full-control type semiconductor devices
Emitter-base bandgap grading connects, the first leading-out terminal of the colelctor electrode of the 3rd full-control type semiconductor devices as the second director switch module, and the 4th
Second leading-out terminal of the colelctor electrode of full-control type semiconductor devices as the second director switch module.
Described full-bridge submodule is by electric capacity, and four full-control type semiconductor devices and its anti-paralleled diode composition.
The emitter stage of 5th full-control type semiconductor devices be connected with the emitter stage of the 7th full-control type semiconductor devices and with the negative pole of electric capacity
Connection, the colelctor electrode of the 6th full-control type semiconductor devices be connected with the colelctor electrode of the 8th full-control type semiconductor devices and with electric capacity
Positive pole connects；The colelctor electrode of 5th full-control type semiconductor devices is connected with the emitter stage of the 6th full-control type semiconductor devices, connection
First leading-out terminal of the point as full-bridge submodule, the colelctor electrode and the 8th full-control type semiconductor of the 7th full-control type semiconductor devices
The emitter stage connection of device, second leading-out terminal of the tie point as full-bridge submodule.
Described full-bridge submodule can be replaced by multiple full-bridge sub-module cascades.
Described director switch also has another composition form：It is made up of four diodes and a wholly-controled device, the
The negative electrode of the negative electrode of one diode and the second diode connects, and is connected with the colelctor electrode of wholly-controled device；3rd diode
The anode of anode and the 4th diode connects, and is connected with the emitter stage of wholly-controled device；The anode of first diode and the 3rd
The negative electrode connection of diode, the first leading-out terminal as director switch；The moon of the anode of second diode and the 4th diode
Pole connects the second leading-out terminal as director switch.
Three leading-out terminals of flow controller connect three-line respectively.When the inflow leading-out terminal of flow controller first
The timing of electric current one, can be in trend by the control to director switch and the full-control type semiconductor devices of four full-bridge submodules
The leading-out terminal of controller first and the second leading-out terminal directly forward direction either reversely access electric capacity or in flow controller first
Electric capacity is accessed forward or backwards between leading-out terminal and three terminal.By the discharge and recharge to electric capacity, by flow controller
Power on second leading-out terminal connection line and the Power Exchange on the sub- connection line of flow controller three terminal, so as to
Control circuit trend.
Advantages of the present invention：
A. used semiconductor devices quantity is few, and pressure-resistant demand is low；
B. whole device passive device demand is few, and small volume is in light weight；
C. mature full-bridge modularization technique is used, is easy to Project Realization.
Brief description of the drawings
Fig. 1 is the electrical block diagram of the present invention；
Fig. 2 is the circuit theory diagrams of embodiments of the invention 1；
Fig. 3 is another implementation of described director switch；
Fig. 4 is another implementation that described full-bridge submodule is replaced by multiple full-bridge sub-module cascade structures.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
As shown in figure 1, described direct current network flow controller topology is opened by the first director switch module 11, the second guiding
Close module 12 and full-bridge submodule 13 forms.First leading-out terminal of the first director switch module 11 and the second director switch module
12 the first leading-out terminal connection, as the first leading-out terminal 1 of the direct current network flow controller, the first director switch mould
Second leading-out terminal of block 11 is connected with the first leading-out terminal 4 of full-bridge submodule 13, and tie point is as direct current network tide
Second leading-out terminal 2 of stream controller, the second leading-out terminal of the second director switch module 12 and the second of full-bridge submodule 13
Leading-out terminal 5 connects, three terminal 3 as the direct current network flow controller；
The first described director switch module 11 is by the first full-control type semiconductor devices T1 and its anti-paralleled diode D1,
Two full-control type semiconductor devices T2 and its anti-paralleled diode D2 compositions.First full-control type semiconductor devices T1 emitter stage and
One full-control type semiconductor devices T2 emitter stage connection, the first full-control type semiconductor devices T1 colelctor electrode is oriented to as first to be opened
Close the first leading-out terminal of module, the second full-control type semiconductor devices T2 colelctor electrode as the first director switch module 11 the
Two leading-out terminals.
The second described director switch module 12 is by the first full-control type semiconductor devices T3 and its anti-paralleled diode D3,
Two full-control type semiconductor devices T4 and its anti-paralleled diode D4 compositions.3rd full-control type semiconductor devices T3 emitter stage and
Four full-control type semiconductor devices T4 emitter stage connection, the 3rd full-control type semiconductor devices T3 colelctor electrode is oriented to as second to be opened
The first leading-out terminal of module 12 is closed, the 4th full-control type semiconductor devices T4 colelctor electrode is as the second director switch module 12
Second leading-out terminal.
Described full-bridge submodule is by electric capacity C1 and four full-control type semiconductor devices T5, T6, T7, T8 and its inverse parallel two
Pole pipe D5, D6, D7, D8 are formed；5th full-control type semiconductor devices T5 emitter stage and the 7th full-control type semiconductor devices T7's
Emitter stage is connected and is connected with electric capacity C1 negative pole, and the 6th full-control type semiconductor devices T6 colelctor electrode is partly led with the 8th full-control type
Body device T8 colelctor electrode is connected and is connected with electric capacity C1 positive pole, the 5th full-control type semiconductor devices T5 colelctor electrode and the 6th
Full-control type semiconductor devices T6 emitter stage connection, first leading-out terminal 4 of the tie point as full-bridge submodule 13, the 7th full control
The colelctor electrode of type semiconductor devices is connected with the emitter stage of the 8th full-control type semiconductor devices, and tie point is as full-bridge submodule 13
The second leading-out terminal 5；
When needing electric capacity C1 forward directions being linked into the first leading-out terminal of flow controller 1 and the exit of flow controller second
Son 2 when, the first director switch module 11 turns off, and the second director switch module 12 is open-minded, the 5th full-control type semiconductor devices T5 and
8th full-control type semiconductor devices T8 is open-minded, and the 6th full-control type semiconductor devices T6 and the 7th full-control type semiconductor devices T7 are closed
It is disconnected.
When needing electric capacity C1 negative senses being linked into the first leading-out terminal of flow controller 1 and the exit of flow controller second
When between son 2, the first director switch module 11 turns off, and the second director switch module 12 is open-minded, the 5th full-control type semiconductor devices
T5 and the 8th full-control type semiconductor devices T8 shut-offs, the 6th full-control type semiconductor devices T6 and the 7th full-control type semiconductor devices T7
It is open-minded.
When needing electric capacity C1 forward directions being linked into the first leading-out terminal of flow controller 1 and flow controller three terminal
When between son 3, the first director switch module 11 is open-minded, and the second director switch module 12 turns off, the 5th full-control type semiconductor devices
T5 and the 8th full-control type semiconductor devices T8 shut-offs, the 6th full-control type semiconductor devices T6 and the 7th full-control type semiconductor devices T7
It is open-minded.
When needing electric capacity C1 forward directions being linked into the first leading-out terminal of flow controller 1 and flow controller three terminal
When between son 3, the first director switch module 11 is open-minded, and the second director switch module 12 turns off, the 5th full-control type semiconductor devices
T5 and the 8th full-control type semiconductor devices T8 are open-minded, the 6th full-control type semiconductor devices T6 and the 7th full-control type semiconductor devices T7
Shut-off.
Pass through the switching between above-mentioned state, you can each to flow controller by electric capacity C1 access forward or backwards
Electric current between leading-out terminal is adjusted, so as to control direct current network trend.
Embodiment 1
Fig. 2 show the embodiment that described direct current network flow controller is linked into three end looped network of DC power, its
First leading-out terminal 1 of middle flow controller is connected with the first current conversion station 21, and the second leading-out terminal 2 of flow controller is by straight
Stream transmission line of electricity is connected with the second current conversion station 22, and three terminal 3 of flow controller passes through DC power transmission line and the 3rd
Current conversion station 23 connects.
Embodiment 2
Fig. 3 show another implementation of director switch module.As shown in figure 3, director switch module is by four two
Pole pipe 24,25,26,27 and a wholly-controled device 28 form.The negative electrode of the negative electrode of first diode 24 and the second diode 26
Connection, and be connected with the colelctor electrode of wholly-controled device 28；The anode connection of the anode and the 4th diode 27 of 3rd diode 25,
And it is connected with the emitter stage of wholly-controled device 28；The anode of first diode 24 is connected with the negative electrode of the 3rd diode 25, as
First leading-out terminal of director switch；The anode of second diode 26 is connected with the negative electrode of the 4th diode 27 is used as director switch
The second leading-out terminal.
Embodiment 3
Fig. 4 show described flow controller another kind implementation.As shown in figure 4, full-bridge submodule is by full-bridge
Module-cascade structure 33 replaces.Described full-bridge sub-module cascade structure 33 is by the first full-bridge submodule 31 and the second full-bridge submodule
The cascade composition of block 32.First leading-out terminal 34 of the second full-bridge submodule 32 and the second leading-out terminal of the first full-bridge submodule 31
45 connections, the first leading-out terminal 44 of the second leading-out terminal of the first director switch module 11 and the first full-bridge submodule 31 connect
Connect, second leading-out terminal 2 of the tie point as the direct current network flow controller, the second of the second director switch module 12 draws
Go out terminal to be connected with the second leading-out terminal 35 of the second full-bridge submodule 32, tie point is as the direct current network flow controller
Three terminal 3.The first leading-out terminal 44 and the first full-bridge submodule that first switch S1 passes through the first full-bridge submodule 31
Second leading-out terminal 45 of block 31 is in parallel with the first full-bridge submodule, and second switch S2 passes through the first of the second full-bridge submodule 32
Second leading-out terminal 35 of the full-bridge submodule 32 of leading-out terminal leading-out terminal 34 and second is in parallel with the first full-bridge submodule.Pass through
First switch S1, second switch S2 control the conducting and bypass of the first full-bridge submodule 31 and the second full-bridge submodule 32 respectively.
Claims (3)
- A kind of 1. direct current network flow controller topology, it is characterised in that：Described direct current network flow controller topology is by One director switch module (11), the second director switch module (12) and full-bridge submodule (13) composition；First director switch module (11) the first leading-out terminal is connected with the first leading-out terminal of the second director switch module (12), as direct current network tide The first leading-out terminal (1) of stream controller；Second leading-out terminal of the first director switch module (11) and full-bridge submodule (13) The first leading-out terminal (4) connection, second leading-out terminal (2) of the tie point as the direct current network flow controller；Second Second leading-out terminal of director switch module (12) is connected with the second leading-out terminal (5) of full-bridge submodule (13), as described The three terminal of direct current network flow controller is sub (3)；The first described director switch module (11) by the first full-control type semiconductor devices (T1) and its anti-paralleled diode (D1), Second full-control type semiconductor devices (T2) and its anti-paralleled diode (D2) composition；The hair of first full-control type semiconductor devices (T1) Emitter-base bandgap grading is connected with the emitter stage of the second full-control type semiconductor devices (T2), and the colelctor electrode of the first full-control type semiconductor devices (T1) is made For the first leading-out terminal of the first director switch module, the colelctor electrode of the second full-control type semiconductor devices (T2) is oriented to as first Second leading-out terminal of switch module (11)；The second described director switch module (12) by the 3rd full-control type semiconductor devices (T3) and its anti-paralleled diode (D3), 4th full-control type semiconductor devices (T4) and its anti-paralleled diode (D4) composition；The hair of 3rd full-control type semiconductor devices (T3) Emitter-base bandgap grading is connected with the emitter stage of the 4th full-control type semiconductor devices (T4), and the colelctor electrode of the 3rd full-control type semiconductor devices (T3) is made For the first leading-out terminal of the second director switch module (12), the colelctor electrode of the 4th full-control type semiconductor devices (T4) is as second Second leading-out terminal of director switch module (12)；Described full-bridge submodule is by electric capacity (C1) and four full-control type semiconductor devices (T5, T6, T7, T8) and its inverse parallel two Pole pipe (D5, D6, D7, D8) forms；The emitter stage and the 7th full-control type semiconductor devices of 5th full-control type semiconductor devices (T5) (T7) emitter stage connection, and be connected with the negative pole of electric capacity (C1)；The colelctor electrode of 6th full-control type semiconductor devices (T6) and The colelctor electrode connection of eight full-control type semiconductor devices (T8), and be connected with the positive pole of electric capacity (C1)；5th full-control type semiconductor device The colelctor electrode of part (T5) is connected with the emitter stage of the 6th full-control type semiconductor devices (T6), and tie point is as full-bridge submodule (13) The first leading-out terminal (4), the colelctor electrode of the 7th full-control type semiconductor devices and the emitter stage of the 8th full-control type semiconductor devices Connection, second leading-out terminal (5) of the tie point as full-bridge submodule (13)；When needing electric capacity (C1) forward direction being linked into the leading-out terminal of flow controller first (1) and the exit of flow controller second When sub (2), the shut-off of the first director switch module (11), the second director switch module (12) is open-minded, the 5th full-control type semiconductor device Part (T5) and the 8th full-control type semiconductor devices (T8) are open-minded, and the 6th full-control type semiconductor devices (T6) and the 7th full-control type are partly led Body device (T7) turns off；When needing electric capacity (C1) negative sense being linked into the leading-out terminal of flow controller first (1) and the exit of flow controller second When between sub (2), the shut-off of the first director switch module (11), the second director switch module (12) is open-minded, and the 5th full-control type is partly led Body device (T5) and the shut-off of the 8th full-control type semiconductor devices (T8), the 6th full-control type semiconductor devices (T6) and the 7th full-control type Semiconductor devices (T7) is open-minded；When needing electric capacity (C1) forward direction being linked into the leading-out terminal of flow controller first (1) and flow controller three terminal When between sub (3), the first director switch module (11) is open-minded, and the second director switch module (12) shut-off, the 5th full-control type is partly led Body device (T5) and the shut-off of the 8th full-control type semiconductor devices (T8), the 6th full-control type semiconductor devices (T6) and the 7th full-control type Semiconductor devices (T7) is open-minded；When needing electric capacity (C1) negative sense being linked into the leading-out terminal of flow controller first (1) and flow controller three terminal When between sub (3), the first director switch module (11) is open-minded, and the second director switch module (12) shut-off, the 5th full-control type is partly led Body device (T5) and the 8th full-control type semiconductor devices (T8) are open-minded, the 6th full-control type semiconductor devices (T6) and the 7th full-control type Semiconductor devices (T7) turns off；Pass through the switching between above state, you can by the access forward or backwards of electric capacity (C1), to direct current network trend control Electric current between each leading-out terminal of device processed is adjusted, so as to control direct current network trend.
- 2. according to the direct current network flow controller topology described in claim 1, it is characterised in that：Described full-bridge submodule by Multiple full-bridge sub-module cascade structures (33) replace；Described full-bridge sub-module cascade structure (33) is by the first full-bridge submodule (31) formed with the cascade of the second full-bridge submodule (32)；The first leading-out terminal (34) of second full-bridge submodule (32) and first complete The second leading-out terminal (45) connection of bridge submodule (31), the second leading-out terminal of the first director switch module (11) and first complete The first leading-out terminal (44) connection of bridge submodule (31), tie point are drawn as the second of the direct current network flow controller Terminal (2)；Second leading-out terminal of the second leading-out terminal of the second director switch module (12) and the second full-bridge submodule (32) (35) connect, tie point is sub (3) as the three terminal of the direct current network flow controller；First switch (S1) passes through After the second leading-out terminal (45) of the first leading-out terminal (44) of one full-bridge submodule (31) and the first full-bridge submodule (31), with First full-bridge submodule is in parallel, second switch (S2) by the first of the second full-bridge submodule (32) draw leading-out terminal (34) and It is in parallel with the first full-bridge submodule after the second leading-out terminal (35) of second full-bridge submodule (32)；Pass through first switch (S1) Control the conducting and bypass of the first full-bridge submodule (31)；Leading for second full-bridge submodule (32) is controlled by second switch (S2) Logical and bypass.
- 3. according to the direct current network flow controller topology described in claim 1, it is characterised in that：The first described director switch Module and the second director switch module form by four diodes (24,25,26,27) and a wholly-controled device (28)；The The negative electrode of one diode (24) and the negative electrode of the second diode (26) are connected and are connected with the colelctor electrode of wholly-controled device (28)；The The anode of three diodes (25) and the 4th diode (27) is connected and is connected with the emitter stage of wholly-controled device (28)；One or two pole The anode of pipe (24) is connected with the negative electrode of the 3rd diode (26), as the first leading-out terminal of the first director switch module or the First leading-out terminal of two director switch modules；The anode of second diode (25) is connected with the negative electrode of the 4th diode (27), As the second leading-out terminal of the first director switch module or the second leading-out terminal of the second director switch module.
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| CN110350566B (en) * | 2019-06-04 | 2020-12-29 | 上海交通大学 | Three-terminal direct current system containing direct current power flow controller |
| CN114928093A (en) * | 2022-07-18 | 2022-08-19 | 中国长江三峡集团有限公司 | Topological structure of direct current power flow controller and control method |
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| US9281756B2 (en) * | 2011-11-11 | 2016-03-08 | Varentec, Inc. | Power flow controller with a fractionally rated back-to-back converter |
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| CN102545222A (en) * | 2011-12-21 | 2012-07-04 | 武汉理工大学 | Distributed power flow controller based on line cubic harmonic wave |
| CN103516221A (en) * | 2013-10-10 | 2014-01-15 | 清华大学 | Bi-direction direct-current solid-state transformer with high-frequency alternating-current isolation link |
| CN103944430A (en) * | 2014-04-25 | 2014-07-23 | 中国科学院电工研究所 | Modularization multi-level current converter subunit topology part |
| CN104104101A (en) * | 2014-06-16 | 2014-10-15 | 南方电网科学研究院有限责任公司 | Quick tidal current reversal control method of hybrid direct current transmission |
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