CN206041517U - Mix energy storage converter device - Google Patents
Mix energy storage converter device Download PDFInfo
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- CN206041517U CN206041517U CN201621055062.3U CN201621055062U CN206041517U CN 206041517 U CN206041517 U CN 206041517U CN 201621055062 U CN201621055062 U CN 201621055062U CN 206041517 U CN206041517 U CN 206041517U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 34
- 238000004891 communication Methods 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 abstract 3
- 238000002955 isolation Methods 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a mix energy storage converter device, including a plurality of two -way DCDC converters, two -way DCAC converter, isolation transformer, converter monitored control system, bypass circuit, two -way DCDC converter is connected with the dc bus of two -way DCAC converter, the DCAC converter passes through isolation transformer and inserts the electric wire netting, converter monitored control system carries out real -time communication through the high -speed communication bus in inside with two -way DCDC converter and two -way DCAC converter, bypass circuit cooperation mix energy storage converter device realizes being incorporated into the power networks and seamless handover from netted attitude. The utility model discloses the nimble of multiple energy storage unit be can realize and insert that the voltage that has effectively enlarged the energy storage unit inserts the scope, the efficiency and the system stability of device have been promoted.
Description
Technical field
This utility model is related to hybrid energy-storing current transformer field, more particularly, it relates to a kind of hybrid energy-storing current transformer dress
Put.
Background technology
Current energy storage technology species is various, but single energy storage technology is difficult while to meet energy density, power close
The performance indications such as degree, system effectiveness, service life, cost.Water-storage scale is big, low cost, but power station landform is required
It is harsh, it is difficult to large-scale promotion；Lead-acid Battery Technology is ripe, cheap, safe, but energy density is low, and quality is big,
And there is environmental pollution；Lithium ion battery energy density is big, average output voltage is high, self discharge is little, no memory effect, but
Safety is low, Large Copacity integrated technology difficult；All-vanadium flow battery energy density is big, has extended cycle life, can be with high-power depth
Discharge and recharge, but high cost；Ultracapacitor power density is high, the discharge and recharge time is short, have extended cycle life, but stored energy capacitance is low, no
Suitable for the extensive energy storage of electrical network.Therefore, in power grid application, the stable operation of system to be realized, the quality of power supply improve and cut
One of power-balance control on the Multiple Time Scales such as peak load, development trend of energy storage are to be combined various energy storage technologies
Utilize, farthest to play the advantage of various energy storage technologies, reduce energy-storage system Life Cycle Cost, improve energy storage system
The economy of system.
A kind of hybrid energy-storing power conversion system is prior art discloses, it is single with two-way DC/DC conversion comprising accumulator
Unit, super capacitor two-way DC/DC converter units, LLCL wave filter, transformator etc..But the two-way DC/DC conversion of the current transformer
Unit adopts triple modular redundant structure, wave filter to adopt LLCL structures, and converter circuit arrangement is complicated, and does not account for energy-storage battery
Low-voltage boosting problem.
The content of the invention
The technical problems to be solved in the utility model is, there is provided a kind of hybrid energy-storing converter device.
This utility model solves the technical scheme adopted by its technical problem：Construct a kind of hybrid energy-storing current transformer dress
Put, including multiple two-way DC/DC changers in parallel, two-way DC/AC changers, isolating transformer, current transformer monitoring system, side
Road circuit, the two-way DC/DC changers are connected with the dc bus of two-way DC/AC changers, the two-way DC/AC changers
Electrical network is accessed by isolating transformer, the current transformer monitoring system is converted with two-way DC/DC by inner high speed communication bus
Device and two-way DC/AC changers carry out real-time Communication for Power, the bypass circuit coordinate hybrid energy-storing converter device realize it is grid-connected with
The seamless switching of off-network state.
In such scheme, the two-way DC/DC changers include IGBT device Q1, IGBT device Q2, electric capacity C1, electric capacity
C2, filter inductance L, connect the electric capacity C1, filter inductance L described in the positive pole Jing of energy-storage units between the both positive and negative polarity of energy-storage units
Access the colelctor electrode of IGBT device Q1 and the emitter stage of IGBT device Q2, the colelctor electrode of IGBT device Q2 and IGBT device Q1
Emitter stage be respectively connecting to the both positive and negative polarity of dc bus.
In such scheme, the two-way DC/DC changers also include coupling inductance L2, coupling inductance L2 it is public
The colelctor electrode into IGBT device Q1 is terminated, the input of coupling inductance L2 connects filter inductance L, coupling inductance L2
Outfan connects the emitter stage of IGBT device Q2.Can be lifted by configuring the rational inductance turn ratio in mixed energy storage system and be stored up
The voltage of energy unit accesses scope, unit efficiency and system stability.
In such scheme, the two-way DC/AC changers adopt three-level topology structure, the two-way DC/AC conversion
Filter capacitor C3, filter capacitor C4 is provided between the dc bus both positive and negative polarity of device and accesses the two-way DC/AC changers
Input, the outfan of the two-way DC/AC changers is via inductance L3, inductance L4, inductance L5, inductance L6, inductance L7, inductance
It is connected on ac bus after L8 and electric capacity C5, electric capacity C6, the LCL filter circuits of electric capacity C7 compositions.
In such scheme, the current transformer monitoring system passes through serial communication interface and touch panel communication.Touch screen display
Show the voltage of energy-storage units DC side, the voltage of electric current and electrical network AC, electric current, and whole hybrid energy-storing converter system
Operational factor, warning message and logout, while discharge and recharge on off control can be carried out and arrange battery charging and discharging electric current,
The parameters such as charge-discharge electric power, discharge and recharge cut-off condition.
In such scheme, the hybrid energy-storing converter device is transported under local control pattern or distant place control model
OK；Under local control pattern, touch screen carries out constant current or invariable power charge and discharge control to energy-storage units；Mould is controlled in the distance
Under formula, constant current or invariable power charge and discharge control, communication protocol are carried out by Ethernet or serial communication mode to energy-storage units
Using Ethernet MODBUS-TCP or the serial ports MODBUS stipulations of standard.
Implement this utility model hybrid energy-storing converter device, have the advantages that：
Using multiple two-way DC/DC changers, the two-way DC/AC changers of Jing after dc bus parallel connection connect this utility model
Enter the topological structure of electrical network, it is possible to achieve the flexible access of various energy-storage units, and be coupling by two-way DC/DC converter designs
Inductance DC/DC circuit structures, the voltage for effectively expanding energy-storage units access scope, improve efficiency and the system stability of device
Property.
Description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the theory diagram of this utility model hybrid energy-storing converter device；
Fig. 2 is the circuit structure diagram of two-way DC/DC changers；
Fig. 3 is the circuit structure diagram of coupling inductance DC/DC changer；
Fig. 4 is the circuit structure diagram of two-way DC/AC changers.
Specific embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate specific embodiment of the present utility model.
As shown in figure 1, a kind of hybrid energy-storing converter device of this utility model, becomes including multiple two-way DC/DC in parallel
Parallel operation, two-way DC/AC changers, isolating transformer, current transformer monitoring system, bypass circuit.
Two-way DC/DC changers are connected with the dc bus of two-way DC/AC changers, two-way DC/AC changers by every
380V electrical networks are accessed from transformator.Two-way DC/DC changers can be respectively connected to all-vanadium flow battery, lithium ion battery and super electricity
Various energy-storage units such as container, realize the input of hybrid energy-storing unit difference electric pressure power supply, and each energy-storage units can be independent
Carry out constant current or invariable power charge and discharge control.
As shown in Fig. 2 two-way DC/DC changers include IGBT device Q1, IGBT device Q2, electric capacity C1, electric capacity C2, filtering
Inductance L, connects electric capacity C1 between the both positive and negative polarity of energy-storage units, the filtered inductance L of positive pole of energy-storage units accesses IGBT device Q1
Colelctor electrode and IGBT device Q2 emitter stage, the emitter stage of the colelctor electrode of IGBT device Q2 and IGBT device Q1 is respectively connecting to
The both positive and negative polarity of dc bus.When energy-storage units discharge, the shut-off of IGBT device Q2, two-way DC/DC changers are BOOST circuits；
When energy-storage units charge, the shut-off of IGBT device Q1, two-way DC/DC changers are BUCK circuits.
As shown in figure 3, being further improved to above-mentioned two-way DC/DC changers, which also includes coupling inductance L2, coupling electricity
The common port of sense L2 accesses the colelctor electrode of IGBT device Q1, the input connection filter inductance L of coupling inductance L2, coupling inductance L2
Outfan connect IGBT device Q2 emitter stage.By configuring the rational coupling inductance turn ratio, the dutycycle of PWM is reduced, from
And avoid the restriction that two-way DC/DC converter circuits dutycycle should not be too big.On the other hand, replaced with coupling inductance L2 two-way
After inductance in DC/DC converter circuits, the voltage stress of switching tube is substantially reduced, and can select the derailing switch of low-voltage, high-current
Part, the on state resistance of device are smaller, and the efficiency of circuit is also higher.
As shown in figure 4, two-way DC/AC changers adopt three-level topology structure, the dc bus of two-way DC/AC changers
Filter capacitor C3, filter capacitor C4 is provided between both positive and negative polarity and accesses the input of two-way DC/AC changers, two-way DC/AC
The outfan of changer is via inductance L3, inductance L4, inductance L5, inductance L6, inductance L7, inductance L8 and electric capacity C5, electric capacity C6, electricity
It is connected on ac bus after the LCL filter circuits for holding C7 compositions.Two traditional level blocks are compared, the two-way DC/AC conversion
Device can obtain higher voltage waveform quality, and grid-connected filter inductance small volume, lightweight, energy under relatively low switching frequency
The pressure of current transformer, reduction output current harmonics and switching loss are effectively improved enough.
Current transformer monitoring system is converted with two-way DC/DC changers and two-way DC/AC by inner high speed CAN communication bus
Device carries out real-time Communication for Power, on the one hand gathers voltage, the electric current of two-way DC/DC changers and two-way DC/AC changers alternating current-direct current side
Signal, on the other hand realizes that the PWM to two-way DC/DC changers and two-way DC/AC changers is controlled.
Current transformer monitoring system passes through serial communication interface and touch panel communication.Touch screen shows energy-storage units DC side
Voltage, the voltage of electric current and electrical network AC, electric current, and operational factor, the alarm signal of whole hybrid energy-storing converter system
Breath and logout, while can carry out discharge and recharge on off control and arrange battery charging and discharging electric current, charge-discharge electric power, discharge and recharge
The parameters such as cut-off condition.
Whole hybrid energy-storing current transformer can be run under local control pattern or distant place control model.In local control mould
Under formula, constant current or invariable power charge and discharge control can individually be carried out to hybrid energy-storing unit by touch screen；Mould is controlled in the distance
Under formula, constant current or invariable power charge and discharge control can be carried out by communication modes such as Ethernet or serial ports to hybrid energy-storing unit,
Ethernet MODBUS-TCP or serial ports MODBUS stipulations of the communication protocol using standard.
Bypass circuit coordinates hybrid energy-storing converter device to realize grid-connected and off-network state seamless switching.When electrical network it is normal
During operation, hybrid energy-storing current transformer can automatically or receive dispatch command charge and discharge control is carried out to each direct current channel；Work as electrical network
During failure, energy accumulation current converter is switched to off-network V/f operational mode by bypass circuit by grid-connected P/Q operational modes, by energy storage
Direct current branch supports inverter direct-current voltage；When power system restoration is normal, hybrid energy-storing current transformer is by bypass circuit by off-network
V/f operational modes are switched to grid-connected P/Q operational modes.Hybrid energy-storing converter device simultaneously/off-network handoff procedure in, in order to not
Interrupt power supply to power, need to coordinate by bypass circuit and realize the grid-connected seamless switching with off-network state of device.
Embodiment of the present utility model is described above in conjunction with accompanying drawing, but this utility model is not limited to
The specific embodiment stated, above-mentioned specific embodiment be only it is schematic rather than restricted, this area it is common
Technical staff under enlightenment of the present utility model, without departing from this utility model objective and scope of the claimed protection situation
Under, many forms can be also made, these are belonged within protection of the present utility model.
Claims (6)
1. a kind of hybrid energy-storing converter device, including multiple two-way DC/DC changers in parallel, two-way DC/AC changers, every
From transformator, current transformer monitoring system, bypass circuit, it is characterised in that the two-way DC/DC changers are become with two-way DC/AC
The dc bus connection of parallel operation, the two-way DC/AC changers access electrical network, the current transformer monitoring system by isolating transformer
System carries out real-time Communication for Power, the bypass by inner high speed communication bus with two-way DC/DC changers and two-way DC/AC changers
Circuit coordinates hybrid energy-storing converter device to realize grid-connected and off-network state seamless switching.
2. hybrid energy-storing converter device according to claim 1, it is characterised in that the two-way DC/DC changers bag
IGBT device Q1, IGBT device Q2, electric capacity C1, electric capacity C2, filter inductance L is included, between the both positive and negative polarity of energy-storage units, connects described
Electric capacity C1, filter inductance L described in the positive pole Jing of energy-storage units access the colelctor electrode of IGBT device Q1 and the transmitting of IGBT device Q2
The emitter stage of pole, the colelctor electrode of IGBT device Q2 and IGBT device Q1 is respectively connecting to the both positive and negative polarity of dc bus.
3. hybrid energy-storing converter device according to claim 2, it is characterised in that the two-way DC/DC changers are also
Including coupling inductance L2, the common port of coupling inductance L2 accesses the colelctor electrode of IGBT device Q1, coupling inductance L2
Input connects filter inductance L, and the outfan of coupling inductance L2 connects the emitter stage of IGBT device Q2.
4. hybrid energy-storing converter device according to claim 1, it is characterised in that the two-way DC/AC changers are adopted
Three-level topology structure is used, between the dc bus both positive and negative polarity of the two-way DC/AC changers, filter capacitor C3, filtering is provided with
The input of electric capacity C4 and the access two-way DC/AC changers.
5. hybrid energy-storing converter device according to claim 1, it is characterised in that the current transformer monitoring system passes through
Serial communication interface and touch panel communication.
6. hybrid energy-storing converter device according to claim 5, it is characterised in that the hybrid energy-storing converter device
May operate at local control pattern or distant place control model；Under local control pattern, energy-storage units can be entered by touch screen
Row constant current or invariable power charge and discharge control；In the distance under control model, can be by Ethernet or serial communication mode to energy storage
Unit carries out constant current or invariable power charge and discharge control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055062.3U CN206041517U (en) | 2016-09-13 | 2016-09-13 | Mix energy storage converter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055062.3U CN206041517U (en) | 2016-09-13 | 2016-09-13 | Mix energy storage converter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041517U true CN206041517U (en) | 2017-03-22 |
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ID=58297306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621055062.3U Active CN206041517U (en) | 2016-09-13 | 2016-09-13 | Mix energy storage converter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041517U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329572A (en) * | 2016-09-13 | 2017-01-11 | 国家电网公司 | Hybrid energy storage converter device and control method |
| CN108092279A (en) * | 2017-12-22 | 2018-05-29 | 国网山东省电力公司滨州供电公司 | A kind of device for comprehensively compensating reactive power harmonics of electric power system |
| WO2019019296A1 (en) * | 2017-07-24 | 2019-01-31 | 深圳市泰昂能源科技股份有限公司 | On-line checking discharge apparatus and method for storage battery set |
-
2016
- 2016-09-13 CN CN201621055062.3U patent/CN206041517U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329572A (en) * | 2016-09-13 | 2017-01-11 | 国家电网公司 | Hybrid energy storage converter device and control method |
| WO2019019296A1 (en) * | 2017-07-24 | 2019-01-31 | 深圳市泰昂能源科技股份有限公司 | On-line checking discharge apparatus and method for storage battery set |
| CN108092279A (en) * | 2017-12-22 | 2018-05-29 | 国网山东省电力公司滨州供电公司 | A kind of device for comprehensively compensating reactive power harmonics of electric power system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |