CN206117292U - Energy changes confession device topology - Google Patents
Energy changes confession device topology Download PDFInfo
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- CN206117292U CN206117292U CN201620982606.4U CN201620982606U CN206117292U CN 206117292 U CN206117292 U CN 206117292U CN 201620982606 U CN201620982606 U CN 201620982606U CN 206117292 U CN206117292 U CN 206117292U
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Abstract
The utility model discloses an energy changes confession device topology for connect the electric wire netting A and the B of two arbitrary electric pressures, include in proper order: the thyristor B that supply device, wave filter 2, by three group bidirectional thyristors constitute is changeed by the three thyristor A that constitute of bidirectional thyristors of group, wave filter 1, energy, the energy change to supply the device to comprise converter A and converter B, the direct current side of two converters constitution dc bus that links together, and converter A's interchange side links to each other with wave filter 1, and converter B's interchange side and wave filter are 2 continuous, converter A and electric wire netting A can all supply power for the load among the electric wire netting A, converter B and electric wire netting B can all supply power for the load among the electric wire netting B, the utility model discloses an energy changes the confession device can realize the interconnection between the electric wire netting to realize that electric wire netting load energy changes the confession.
Description
Technical field
The utility model is related to power system automatic field, is especially that by energy and turns to turn to supply for the energy of function
Device topology.
Background technology
With developing rapidly for distributed power generation and micro-capacitance sensor, multiple region partial electric grids interconnections are to realize resource and energy
Complementary, economical and efficient utilizes the effective means of electric energy.Due to the permeability more and more higher of generation of electricity by new energy, regional power grid end
Power quality problem is more severe, and micro-capacitance sensor application is more and more.
The individually controllable system that micro-capacitance sensor is made up of distributed power source, energy storage and controllable burden, with autonomous operation, many
The advantages such as micro- source complementation.
When distribution network failure, each micro-capacitance sensor will respectively be operated in different isolated network states, due to micro- inside micro-capacitance sensor
There are greatest differences in source characteristic, part throttle characteristics etc., the voltage magnitude of each micro-capacitance sensor, frequency and phase angle can have certain difference.
Additionally, the distributed energy permeability of each micro-capacitance sensor, stored energy capacitance are also different.Thus realize that power distribution network is black in the interconnection of many micro-capacitance sensors
Start and non-faulting region restores electricity.
Back-to-back converter is because its DC voltage is controllable, to and fro flow of power the advantages of, exchange power transmission and distribution have very wide
General application.Compared with general convertor, back-to-back converter adopts pulsewidth modulation (PWM) rectification, and its DC bus-bar voltage can
Control, power factor is adjustable to unity power factor so that its control performance is flexible and changeable, uses back-to-back converter so that electricity
Interconnection, and stable operation are realized between net, is with a wide range of applications；However, network load energy turns confession, power flowcontrol
The problems such as, it is the problem that must be solved in engineer applied.
The content of the invention
The technical problem that the utility model is solved is to provide a kind of energy and turns for device topological structure and its control method.Can
To realize the interconnection between multiple free voltage level Grids, and realize that energy turns to supply between electrical network.
The technical solution of the utility model is：
There is provided a kind of energy to turn for device topology, for connecting the electrical network A and B of two free voltage grades, its feature exists
In the energy turns to supply in device topology, to include successively：The IGCT A that is made up of three groups of bidirectional thyristors, wave filter 1, lean against
The back of the body current transformer, wave filter 2, the IGCT B being made up of three groups of bidirectional thyristors；The back-to-back converter is by current transformer A and change
Stream device B is constituted, and the DC side of two current transformers links together composition dc bus, AC and the phase of wave filter 1 of current transformer A
Even, the AC of current transformer B is connected with wave filter 2, and DC support electric capacity is connected between the both positive and negative polarity of dc bus；The change
Stream device A and electrical network A can be the load supplying in electrical network A, and the current transformer B and electrical network B can be the load in electrical network B
Power supply.
The current transformer A and 2 each self-contained 3 pairs or 4 pairs of upper and lower bridge arms, output three-phase three wire system or three-phase four-wire system are exchanged
Electricity；The current transformer A and current transformer B are the full bridge structures of the full bridge structure of the switch of three-phase six or the switch of four phase eight；Or it is described
Current transformer A and current transformer B are Multilevel Inverters.
The DC support electric capacity is made up of the electric capacity of two series connection, and the midpoint O of series connection is exported as zero line with current transformer
Three-phase alternating current collectively form three-phase four-wire system exchange output.
The three-phase alternating current output end of the current transformer A and current transformer B connects respectively an inductance, one end of inductance and unsteady flow
The midpoint of a certain phase connects in three-phase bridge arm in device A and 2, and the other end of inductance is connected to midpoint O by an electric capacity, so as to
Constitute the structure of wave filter 1 and 2.
The anode tap of the IGCT A being made up of three groups of bidirectional thyristors connects respectively inductance and electric capacity in wave filter 1
Tie point, the cathode terminal of the IGCT A being made up of three groups of bidirectional thyristors is respectively by being switched opening of constituting by three
Close A to be connected with three phase network A；On the tie point of IGCT A and switch A, threephase load A is also associated with；
The anode tap of the IGCT B being made up of three groups of bidirectional thyristors connects respectively inductance and electric capacity in wave filter 2
Tie point, the cathode terminal of the IGCT B being made up of three groups of bidirectional thyristors is respectively by being switched opening of constituting by three
Close B to be connected with three phase network B；On the tie point of IGCT B and switch B, threephase load B is also associated with.
When electrical network A or B power-off, can realize that energy turns to supply, it is characterised in that
When electrical network A power-off, electrical network A ends current transformer A cuts the switch of electrical network A sides from reactive-load compensation pattern hard stop
A, then current transformer A with voltage source mode startup, reach load A operation rated voltage when, close IGCT A, current transformer A with
Voltage source mode driving load A is run, until Grid A voltage recovers；When Grid A voltage recovers, IGCT A, closure are disconnected
Switch A, is powered with electrical network A to load A, and current transformer A switchs to reactive-load compensation pattern from voltage source mode, then closes IGCT A；
Or,
When electrical network B power-off, electrical network B ends current transformer B cuts the switch of electrical network B sides from reactive-load compensation pattern hard stop
B, then current transformer B with voltage source mode startup, reach load B operation rated voltage when, close IGCT B, current transformer B with
Voltage source mode driving load B is run, until Grid B Voltage recovers；When Grid B Voltage recovers, IGCT B, closure are disconnected
Switch B, is powered with electrical network B to load B, and current transformer B switchs to reactive-load compensation pattern from voltage source mode, then closes IGCT B.
The beneficial effects of the utility model are：The utility model realizes that energy turns to supply using a kind of back-to-back converter, when
When one end grid cut-off disconnects, power-off end current transformer is shut down from reactive-load compensation pattern, with voltage source mode startup, switchs to voltage source
Banding power-off end load running, until power system restoration, realizes that energy turns to supply；The design can realize at ordinary times energy bidirectional flow
It is dynamic, realize the power-balance of two electrical networks.
Description of the drawings
Fig. 1 energy turns to supply device topology theory；
Fig. 2 energy turns to supply device topological structure.
Specific embodiment
Energy as shown in Figure 1 turns to supply device topology theory, and two current transformers constitute a back-to-back converter, for even
Two AC powers Ua are connect, the energy of Ub, power supply Ua can flow into power supply Ub, the energy of power supply Ub by back-to-back converter
Power supply Ua can be flowed into by back-to-back converter, i.e., can realize the two-way flow of energy.
Fig. 2 is that energy turns to supply the topology diagram of device, the energy to turn for device topology, for connecting two free voltages
The electrical network A and B of grade, during the energy turns for device topology, includes successively：The IGCT A that is made up of three groups of bidirectional thyristors,
Wave filter 1, energy turns for device, wave filter 2, the IGCT B being made up of three groups of bidirectional thyristors；The energy turn for device by
Current transformer A and current transformer B are constituted, and the DC side of two current transformers links together composition dc bus, the AC of current transformer A
It is connected with wave filter 1, the AC of current transformer B is connected with wave filter 2, and between the both positive and negative polarity of dc bus DC support is connected with
Electric capacity；The current transformer A and electrical network A can be the load supplying in electrical network A, and the current transformer B and electrical network B can be electricity
Load supplying in net B.
The anode tap of the IGCT A being made up of three groups of bidirectional thyristors connects respectively inductance and electric capacity in wave filter 1
Tie point, the cathode terminal of the IGCT A being made up of three groups of bidirectional thyristors is respectively by being switched opening of constituting by three
Close A to be connected with three phase network A；On the tie point of IGCT A and switch A, threephase load A is also associated with；
The anode tap of the IGCT B being made up of three groups of bidirectional thyristors connects respectively inductance and electric capacity in wave filter 2
Tie point, the cathode terminal of the IGCT B being made up of three groups of bidirectional thyristors is respectively by being switched opening of constituting by three
Close B to be connected with three phase network B；On the tie point of IGCT B and switch B, threephase load B is also associated with.
The current transformer A and 2 each self-contained 3 pairs or 4 pairs of upper and lower bridge arms, output three-phase three wire system or three-phase four-wire system are exchanged
Electricity；The current transformer A and current transformer B are the full bridge structures of the full bridge structure of the switch of three-phase six or the switch of four phase eight；Or it is described
Current transformer A and current transformer B are Multilevel Inverters.
The DC support electric capacity is made up of the electric capacity of two series connection, and the midpoint O of series connection is exported as zero line with current transformer
Three-phase alternating current collectively form three-phase four-wire system exchange output.
The three-phase alternating current output end of the current transformer A and current transformer B connects respectively an inductance, one end of inductance and unsteady flow
The midpoint of a certain phase connects in three-phase bridge arm in device A and 2, and the other end of inductance is connected to midpoint O by an electric capacity, so as to
Constitute the structure of wave filter 1 and 2.
Current transformer is phase three-wire three current transformer, or, current transformer is three-phase and four-line current transformer, or, current transformer is three-phase
Four bridge legs current transformer, or, current transformer is three level, or, current transformer is many level, or, current transformer is many by modularization
Level current transformer（MMC）Constitute.
Meanwhile, current transformer A and current transformer B carries out static dynamic passive compensation to electrical network A and electrical network B respectively（SVG）Control,
And/or the current transformer A and current transformer B carries out active balance power flowcontrol to electrical network A and electrical network B.
When electrical network A or B power-off, can realize that energy turns to supply, such as：
When electrical network A power-off, electrical network A ends current transformer A cuts the switch of electrical network A sides from reactive-load compensation pattern hard stop
A, then current transformer A with voltage source mode startup, reach load A operation rated voltage when, close IGCT A, current transformer A with
Voltage source mode driving load A is run, until Grid A voltage recovers；When Grid A voltage recovers, IGCT A, closure are disconnected
Switch A, is powered with electrical network A to load A, and current transformer A switchs to reactive-load compensation pattern from voltage source mode, then closes IGCT A；
Or,
When electrical network B power-off, electrical network B ends current transformer B cuts the switch of electrical network B sides from reactive-load compensation pattern hard stop
B, then current transformer B with voltage source mode startup, reach load B operation rated voltage when, close IGCT B, current transformer B with
Voltage source mode driving load B is run, until Grid B Voltage recovers；When Grid B Voltage recovers, IGCT B, closure are disconnected
Switch B, is powered with electrical network B to load B, and current transformer B switchs to reactive-load compensation pattern from voltage source mode, then closes IGCT B.
Above-mentioned specific embodiment is simply to illustrate that technology design of the present utility model and application characteristic, its object is to allow
The project planner for being familiar with this field will appreciate that Essence of the present utility model and is applied, but can not therefore and
Limit protection domain of the present utility model.Therefore any physical location during practical application this patent protection domain it
It is interior.No matter detailed description is hereinbefore arisen how, it is also possible to implement the utility model with many modes.Above-mentioned controlling party
The details of formula can carry out considerable change in it performs details, but it is still contained in disclosed herein practicality
In new.All equivalent transformations done according to the utility model Spirit Essence or modification, all should cover in guarantor of the present utility model
Within the scope of shield.
Claims (5)
1. a kind of energy turns for device topology, for connecting the electrical network A and electrical network B of two free voltage grades, it is characterised in that
During the energy turns for device topology, include successively：The IGCT A that is made up of three groups of bidirectional thyristors, wave filter 1, back-to-back
Current transformer, wave filter 2, the IGCT B being made up of three groups of bidirectional thyristors；The back-to-back converter is by current transformer A and unsteady flow
Device B is constituted, and the DC side of two current transformers links together composition dc bus, AC and the filter of the current transformer A
Ripple device 1 is connected, and the AC of the current transformer B is connected with the wave filter 2, and between the both positive and negative polarity of dc bus direct current is connected with
Support Capacitor；The current transformer A and electrical network A can be the load supplying in electrical network A, and the current transformer B and electrical network B can
For the load supplying in electrical network B.
2. energy according to claim 1 turns for device topology, it is characterised in that the current transformer A and current transformer B are each
Comprising 3 pairs or 4 pairs of upper and lower bridge arms, output three-phase three wire system or three-phase four-wire system alternating current；The current transformer A and current transformer B are
The full bridge structure of the switch of three-phase six or the full bridge structure of the switch of four phase eight；Or the current transformer A and current transformer B are that many level become
Stream device.
3. energy according to claim 1 turns for device topology, it is characterised in that the DC support electric capacity is by two strings
The electric capacity of connection is constituted, and the midpoint O of series connection collectively forms three-phase and four-line as zero line with the three-phase alternating current of current transformer output
System exchange output.
4. energy according to claim 3 turns for device topology, it is characterised in that the three of the current transformer A and current transformer B
Cross streams output end connects respectively an inductance, one end of inductance and a certain phase in three-phase bridge arm in current transformer A and current transformer B
Midpoint connects, and the other end of inductance is connected to midpoint O, so as to constitute the structure of wave filter 1 and wave filter 2 by an electric capacity.
5. energy according to claim 4 turns for device topology, it is characterised in that described to be made up of three groups of bidirectional thyristors
The anode tap of IGCT A connect the tie point of inductance and electric capacity in wave filter 1 respectively, it is described to be made up of three groups of bidirectional thyristors
The cathode terminal of IGCT A be connected with three phase network A by switching the switch A that constitutes by three respectively；The IGCT A and institute
State on the tie point of switch A, be also associated with threephase load A；
The anode tap of the IGCT B being made up of three groups of bidirectional thyristors connects respectively the company of inductance and electric capacity in wave filter 2
Contact, the cathode terminal of the IGCT B being made up of three groups of bidirectional thyristors respectively by by three switch the switch B for constituting with
Three phase network B connects；On the tie point of the IGCT B and switch B, threephase load B is also associated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620982606.4U CN206117292U (en) | 2016-08-30 | 2016-08-30 | Energy changes confession device topology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620982606.4U CN206117292U (en) | 2016-08-30 | 2016-08-30 | Energy changes confession device topology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206117292U true CN206117292U (en) | 2017-04-19 |
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| CN201620982606.4U Active CN206117292U (en) | 2016-08-30 | 2016-08-30 | Energy changes confession device topology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113852174A (en) * | 2021-08-24 | 2021-12-28 | 北京精密机电控制设备研究所 | Independent mobile oil field energy storage power supply system for field environment |
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2016
- 2016-08-30 CN CN201620982606.4U patent/CN206117292U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113852174A (en) * | 2021-08-24 | 2021-12-28 | 北京精密机电控制设备研究所 | Independent mobile oil field energy storage power supply system for field environment |
| CN113852174B (en) * | 2021-08-24 | 2024-03-01 | 北京精密机电控制设备研究所 | Independent mobile oil field energy storage power supply system for field environment |
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