CN104505848A - Energy storage power supply device on basis of distributed energy AC (Alternating Current) and DC (Direct Current) hybrid access - Google Patents
Energy storage power supply device on basis of distributed energy AC (Alternating Current) and DC (Direct Current) hybrid access Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention relates to an energy storage power supply device on the basis of distributed energy AC (Alternating Current) and DC (Direct Current) hybrid access. The device adopts a highly modularized system framework; a mains supply, a diesel generator, photovoltaic energy, wind power and the like are used as input power supplies; by conversion of an input module, energy storage elements inside the device are charged; energy of the energy storage elements supplies power to a load after being transformed at the output side. Each path of input of the device corresponds to one input module; a plurality of input modules are uniformly controlled by a centralized control unit; each path of AC corresponds to one AC bidirectional module, each path of DC output corresponds to one DC output module, each AC bidirectional module and each DC output module are provided with independent control units; the device is provided with a main control unit which takes charge of carrying out signal communication and control coordination with the input module centralized control unit, the output module control units, an energy storage element management system and a human-computer interaction interface. The device has the characteristics of modularization, high integration level, plug and play property, no maintenance, simplicity and convenience for operation, convenience for carrying and the like.
Description
Technical field
The invention belongs to field work power supply and family new forms of energy access field, be applicable to the multiple distributed energy alternating current-direct current mixing such as civil power, diesel engine generator, photovoltaic, wind-powered electricity generation access, can be used for the field work power supply of instrument and meter, satellite receiver and the equipment such as vehicle-mounted, also can be used for the supporting inverter of family distributed photovoltaic, wind power integration system.
Background technology
On the one hand, during special trade operation in the wild, the instrument and meter of use, satellite receiver and the device power supply (DPS) such as vehicle-mounted generally adopt diesel engine generator or storage battery power supply, and supply power mode is single, and reliability is low; And there are the problems such as hardware cost is high, petroleum transported is difficult; And the solar energy that field is enriched and the wind energy distributed energy do not obtain local use.On the other hand, current family photovoltaic and wind power new energy generating connecting system are subject to the restriction of distributed energy intermittence, instability, uncontrollable feature, need to adopt energy storage technology to stabilize fluctuation, peak load shifting, make its characteristic be tending towards controlled.Solutions are considered: energy-storage travelling wave tube and supporting management system are set as energy Rendezvous Point to above two aspect demands are unified, photovoltaic, the wind-powered electricity generation distributed energy collect in DC link after conversion, export for exchanging through DC/AC inversion again, or be transformed to direct current output through DC/DC copped wave.Adopt this kind of way, namely realize multiple distributed energy alternating current-direct current mixing access, also realize suppressing the fluctuation of distributed energy; Meanwhile, complexity and the hardware cost of system can be reduced, system coordination also can be made to control relatively simple, improve system reliability.
Summary of the invention
For overcoming deficiency of the prior art, the present invention proposes a kind of energy storage power device adopting modular frame, access based on the mixing of distributed energy alternating current-direct current, for realizing the various energy resources mixed charged of field work power supply, also can be used for the fluctuation stabilizing family distributed new generating connecting system.
Mix the energy storage power device of access based on energy-storage travelling wave tube based on distributed energy alternating current-direct current, according to practical application needs, select block combiner flexibly; Carry out the mode of the charging of commercial power charged, diesel engine generator, photovoltaic charged, wind-powered electricity generation charging and various ways combined charging based on selected module, realize the mixing access of distributed energy; Also can realize exchanging output, direct current exports and multiple combination exports; In grid-connected situation, play the effect of stabilizing grid-connected power generation system fluctuation.
Specific implementation of the present invention is as follows:
Based on an energy storage power device for distributed energy alternating current-direct current mixing access, it is characterized in that:
Described energy storage power device adopts modularized design, special module is arranged for alternating current-direct current input power of different nature and output, namely the special module of alternating current-direct current input power comprises photovoltaic input module, wind-powered electricity generation input module, and the special module of output comprises alternating-current bidirectional module and direct current output module.
The input of photovoltaic input module, wind-powered electricity generation input module is directly connected with respective input source respectively, after its outlet side all connects together, is directly connected with energy-storage travelling wave tube DC bus; Energy-storage travelling wave tube itself is with energy-storage travelling wave tube management system;
Alternating-current bidirectional module DC terminal is connected with energy-storage travelling wave tube DC bus, exchanges end and can connect mains supply or diesel-generator power sources, also can connect AC load; Alternating-current bidirectional module both can be charged to energy-storage travelling wave tube, also can as distributed inverter to grid generation;
The input of direct current output module is connected with energy-storage travelling wave tube DC bus, and output connects DC load; Direct current output module itself, based on customization design, by adjusting the power device of direct current output module inside, high frequency transformer and control strategy, realizes the output of different voltage and power.
The described corresponding input module of energy storage power device every road input based on distributed energy alternating current-direct current mixing access, multiple input module adopts a central control unit to carry out unifying to control; Every road exchanges a corresponding alternating-current bidirectional module, and every road direct current exports a corresponding direct current output module, and alternating-current bidirectional module and direct current output module are equipped with independently control unit; Device is provided with main control unit, is responsible for and input module central control unit, output module control unit, energy-storage travelling wave tube management system, signal communicating between human-computer interaction interface and control to coordinate.
The control system of the described energy storage power device based on distributed energy alternating current-direct current mixing access adopts hierarchical logic framework, is divided into two-layer, is respectively module control unit layer and main control unit layer; Module controls layer comprises an input module central control unit, several alternating-current bidirectional module control units and several direct current output module control units; Input module central control unit is responsible for unifying to control to multiple input module, the independence that each alternating-current bidirectional module control unit is responsible for an alternating-current bidirectional module controls, and the independence that each direct current output module control unit is responsible for a direct current output module controls; Energy-storage travelling wave tube management system is responsible for intelligent monitoring and the management of energy-storage travelling wave tube; Main control unit layer comprises main control unit, energy-storage travelling wave tube management system and human-computer interaction interface.
The basic controlling logic of input module and algorithm all realize in input module central control unit; Input module central control unit, in the mode of grouping, for each input module arranges one group of stand-alone interface, is often organized stand-alone interface and is comprised input end signal acquisition interface, switch control rule and state feedback interface, input module drive and protection interface; Input module central control unit arranges special energy-storage travelling wave tube DC bus signal sampling interface; The energy-storage travelling wave tube management system signal that input module central control unit transmits according to each input module signal, DC bus signal and main control unit, carries out unified charging to energy-storage travelling wave tube and controls; According to the energy-storage travelling wave tube management system semaphore request that main control unit transmits, for energy-storage travelling wave tube provides constant current and constant voltage two kinds of charge modes, under two kinds of patterns, adopt the Double-loop Control Strategy of closed-loop current control and outer voltage, current inner loop respectively; Signal exchange channels is provided with between input module central control unit and main control unit.
Photovoltaic input module comprises hand switch, soft start switch group, integrated DC filter unit and booster circuit unit; Hand switch one end of described module connects photovoltaic module, and the other end connects soft start switch group; The soft start switch group other end connects integrated DC filter unit and booster circuit unit successively; At integrated DC filter unit and booster circuit junction, current-voltage sampling transducer is set; Photovoltaic access module is carried out maximal power tracing (MPPT) to photovoltaic module and is controlled and restriction output power; When many groups photovoltaic access module works simultaneously, adopt crisscross parallel drived control;
The basic controlling logic of alternating-current bidirectional module and algorithm all realize in alternating-current bidirectional module control unit; Alternating-current bidirectional module control unit arranges and exchanges end signal acquisition interface, switch control rule and state feedback interface, two-way modules drive and protection interface; Signal exchange channels is provided with between alternating-current bidirectional module control unit and main control unit; Alternating-current bidirectional module control unit obtains DC bus signal, energy-storage travelling wave tube management system signal from main control unit, in conjunction with themselves capture to output sampled signal carry out output control; According to the energy-storage travelling wave tube management system semaphore request that main control unit transmits, for energy-storage travelling wave tube provides constant current and constant voltage two kinds of charge and discharge modes, under two kinds of patterns, adopt the Double-loop Control Strategy of closed-loop current control and outer voltage, current inner loop respectively;
Alternating-current bidirectional module comprises DC terminal soft start switch group, commutation inversion two-way circuit unit, integrated ac filter unit, power frequency isolation transformer, interchange end soft start switch group and hand switch; DC terminal soft start switch group one end of described module connects energy-storage travelling wave tube DC bus, and the other end is connected with the DC terminal of commutation inversion two-way circuit unit; The interchange end of commutation inversion two-way circuit unit connects integrated ac filter unit, power frequency isolation transformer, interchange end soft start switch group and hand switch successively; Integrated ac filter unit with between Industrial Frequency Transformer, exchange to hold between soft start switch group and hand switch current-voltage sampling transducer be all set; Described module automatically identifies and exchanges the electrical network and load that end connects, and the control strategy according in advance setting carries out energy traffic organising, complete grid-connected, from network operation and and switch from net;
Multiple identical capacity exchanges two-way modules can be set to synchronous operation arranged side by side; Alternating-current bidirectional module AC is directly parallel in together, then is connected with same AC power or AC load, is controlled, realize synchronous operation arranged side by side by the coordinate synchronization of multiple alternating-current bidirectional module control unit;
The alternating-current bidirectional module of multiple identical capacity or different capabilities can be set to apportion asynchronous operation; The alternating-current bidirectional module of apportion asynchronous operation exchanges end and is connected with respective AC power or AC load respectively, under the independence of respective alternating-current bidirectional module control unit controls, carries out rectification state or inverter mode operation according to the control strategy preset;
The basic controlling logic of direct current output module and algorithm all realize in direct current output module control unit; Direct current output module control unit arranges output end signal acquisition interface, switch control rule and state feedback interface, output module drive and protection interface; Direct current output module control unit need obtain DC bus signal, energy-storage travelling wave tube management system signal from main control unit, in conjunction with themselves capture to output sampled signal carry out outputs control; Direct current output module only arranges constant voltage mode of operation, adopts the Double-loop Control Strategy of outer voltage, current inner loop;
Direct current output module comprises soft start switch group, isolated form full-bridge DC/DC circuit unit, integrated DC filter unit and hand switch; Soft start switch group one end of described module connects energy-storage travelling wave tube DC bus, and the other end is connected with isolated form full-bridge DC/DC circuit unit input; Isolated form full-bridge DC/DC circuit unit output connects integrated DC filter unit and hand switch successively; At isolated form full-bridge DC/DC circuit unit and integrated DC filter unit junction, current-voltage sampling transducer is set; For different output voltages and current capacity, customize the power device of design module inside, high frequency transformer and control strategy etc.;
Operating personnel set by the coordination control strategy of human-computer interaction interface to device and adjust; The charge and discharge mode of energy-storage travelling wave tube is limited by energy-storage travelling wave tube management system signal; Under fully automatic operation state, device main control unit sets and actual condition according to control strategy in advance, the control such as input power maximization, input power restriction, input power excision of flexible control inputs module, two-way modules;
The sample information that device main control unit respectively inputs from the module control unit acquisition device of module control unit layer, exports, for breakdown judge and device autoprotection; By the switch of tripping respective modules when being judged as external fault; In the middle of autoprotection function, for the situation directly causing device permanent damage, direct protection blocking also externally sends fault-signal; For the situation that can not cause device permanent damage, only send out fault-signal and do not shut down;
Booster circuit unit in photovoltaic input module, booster circuit unit in wind-powered electricity generation input module, commutation inversion two-way circuit unit in alternating-current bidirectional module, isolated form full-bridge DC/DC circuit unit in direct current output module is all integrated with insulated gate bipolar transistor IGBT or metal oxide layer semiconductor field-effect transistor MOSFET, supporting adapter circuit, drive singal treatment circuit, autoprotection circuit etc., as driving and the control command of independently functional circuit unit receiving control system, simultaneously by the device state parameter feedback in functional circuit unit to control system,
In integrated DC filter unit and integrated ac filter unit, according to different electric pressures and current capacity, customization single-stage or multistage differential mode, common mode filtering circuit, carry out EMI suppression as independently passive filtering functional unit.
Energy storage power device device based on distributed energy alternating current-direct current mixing access disclosed in the present application has that modularization, integrated level are high, plug and play, non-maintaining, easy and simple to handle, the feature such as be easy to carry, can be used for the field work power supply of instrument and meter, satellite receiver and the equipment such as vehicle-mounted, also can be used for the supporting inverter of family distributed photovoltaic, wind power integration system.
Accompanying drawing explanation
Fig. 1 device internal module connection diagram;
Fig. 2 apparatus control system function divides schematic diagram;
Fig. 3 photovoltaic input module main circuit topology schematic diagram;
Fig. 4 wind-powered electricity generation input module main circuit topology schematic diagram;
Fig. 5 alternating-current bidirectional module main circuit topology schematic diagram;
Fig. 6 direct current output module main circuit topology schematic diagram;
Fig. 7 exemplary embodiments 1 internal module connection diagram;
Fig. 8 exemplary embodiments 2 internal module connection diagram.
Embodiment
Also in conjunction with specific embodiments the present invention is described in further detail according to Figure of description below.
It is the alternating current-direct current mixing access realizing distributed energy that the energy storage power device based on distributed energy alternating current-direct current mixing access of embodiment implements object, accesses power supply as field work power supply or family new forms of energy.
Specifically as shown in Figure 1, be the energy storage power device internal module connection diagram accessed based on the mixing of distributed energy alternating current-direct current; Device can select type of modules and quantity according to actual needs, photovoltaic input module input directly connects with corresponding photovoltaic module, wind-powered electricity generation input module input is directly connected with fan stator, alternating-current bidirectional module exchanges end and is connected with AC power or AC load, and direct current output module output is connected with DC load; The output of photovoltaic input module and wind-powered electricity generation input module all and after connecing, be connected together with alternating-current bidirectional module DC terminal, direct current output module input with energy-storage travelling wave tube DC bus; Energy-storage travelling wave tube itself, with energy-storage travelling wave tube management system, is responsible for intelligent monitoring and the management of energy-storage travelling wave tube.
Specifically as shown in Figure 2, be that the energy storage power device control system function accessed based on the mixing of distributed energy alternating current-direct current divides schematic diagram; Control system adopts hierarchical logic framework, is divided into two-layer, is respectively module control unit layer and main control unit layer; Module controls layer comprises an input module central control unit, several alternating-current bidirectional module control units and several direct current output module control units; Input module central control unit is responsible for unifying to control to multiple input module, the independence that each alternating-current bidirectional module control unit is responsible for an alternating-current bidirectional module controls, and the independence that each direct current output module control unit is responsible for a direct current output module controls; Energy-storage travelling wave tube management system is responsible for intelligent monitoring and the management of energy-storage travelling wave tube; Main control unit layer comprises main control unit, energy-storage travelling wave tube management system and human-computer interaction interface.
The basic controlling logic of input module and algorithm all realize in input module central control unit; Input module central control unit, in the mode of grouping, for each input module arranges one group of stand-alone interface, is often organized stand-alone interface and is comprised input end signal acquisition interface, switch control rule and state feedback interface, input module drive and protection interface.Described input end signal acquisition interface is connected with the voltage-current sensor in input module, as electric current and voltage sampled signal passage in reception input module; Switch control rule and state feedback interface are connected with the soft start switch group in input module, as sending switch divide-shut brake control signal, receiving key opening and closing state feed-back channel; Input module drive and protection interface is connected with the booster circuit unit in input module, as the drive singal passage sending each IGBT or mosfet, as signalling channels such as reception each IGBT or mosfet overvoltage, overcurrent, excess temperature, driving malfunction.Input module central control unit arranges special energy-storage travelling wave tube DC bus signal sampling interface; The energy-storage travelling wave tube management system signal that input module central control unit transmits according to each input module signal, DC bus signal and main control unit, carries out unified charging to energy-storage travelling wave tube and controls.
The basic controlling logic of alternating-current bidirectional module and algorithm all realize in alternating-current bidirectional module control unit; Alternating-current bidirectional module control unit arranges and exchanges end signal acquisition interface, switch control rule and state feedback interface, two-way modules drive and protection interface.Described interchange end signal acquisition interface is connected with the voltage-current sensor in alternating-current bidirectional module, as electric current and voltage sampled signal passage in reception alternating-current bidirectional module; Switch control rule and state feedback interface are connected with the soft start switch group in alternating-current bidirectional module, as sending switch divide-shut brake control signal, receiving key opening and closing state feed-back channel; Two-way modules drive and protection interface is connected with the commutation inversion two-way circuit unit in alternating-current bidirectional module, as the drive singal passage sending each IGBT or mosfet, as signalling channels such as each IGBT or mosfet overvoltage, overcurrent, excess temperature, driving malfunction.The basic controlling logic of direct current output module and algorithm all realize in direct current output module control unit; Direct current output module control unit arranges output end signal acquisition interface, switch control rule and state feedback interface, output module drive and protection interface.Described output end signal acquisition interface is connected with the voltage-current sensor in direct current output module, as electric current and voltage sampled signal passage in reception direct current output module; Switch control rule and state feedback interface are connected with the soft start switch group in direct current output module, as sending switch divide-shut brake control signal, receiving key opening and closing state feed-back channel; Direct current output module drive and protection interface is connected with the isolated form full-bridge DC/DC circuit unit in direct current output module; as the drive singal passage sending each IGBT or mosfet, as signalling channels such as each IGBT or mosfet overvoltage, overcurrent, excess temperature, driving malfunction.
Operating personnel set by the coordination control strategy of human-computer interaction interface to device and adjust; The charge and discharge mode of energy-storage travelling wave tube is limited by energy-storage travelling wave tube management system signal; Under fully automatic operation state, device main control unit sets and actual condition according to control strategy in advance, the control such as input power maximization, input power restriction, input power excision of flexible control inputs module, two-way modules.
Device main control unit obtains input, the output sample information of device each module, for breakdown judge and device autoprotection from the module control unit of module control unit layer; By the switch of tripping respective modules when being judged as external fault; In the middle of autoprotection function, for the situation directly causing device permanent damage, direct protection blocking also externally sends fault-signal; For the situation that can not cause device permanent damage, only send out fault-signal and do not shut down.
Specifically as shown in Figure 3, be photovoltaic input module main circuit topology schematic diagram; Photovoltaic input module comprises hand switch SW11, soft start switch group K11, integrated DC filter unit EMI 11 and booster circuit unit IGBT11; Hand switch SW11 one end of described module connects photovoltaic module, and the other end connects soft start switch group K11; The K11 other end connects integrated DC filter unit EMI 11; EMI 11 other end connects booster circuit unit IGBT11 input; IGBT11 exports the output for this module; At EMI 11, current-voltage sampling transducer CPT11 is set with IGBT11 junction.Insulated gate bipolar transistor IGBT or metal oxide layer semiconductor field-effect transistor MOSFET, supporting adapter circuit, drive singal treatment circuit, autoprotection circuit etc. is integrated with, as independently functional circuit unit in booster circuit unit IGBT11; Direct current integrated filter EMI 11 is according to concrete electric pressure and current capacity, and the single-stage of integrated customization design or multistage differential mode, common mode filtering circuit, as independently passive filtering functional unit.
When many groups photovoltaic access module works simultaneously, adopt crisscross parallel drived control.
Photovoltaic access module is carried out maximal power tracing (MPPT) to photovoltaic module and is controlled and restriction output power.
Control strategy according to control system sets, and for energy-storage travelling wave tube provides constant current and constant voltage charge pattern, adopts the Double-loop Control Strategy of closed-loop current control and outer voltage, current inner loop under two kinds of patterns respectively.
Specifically as shown in Figure 4, be wind-powered electricity generation input module main circuit topology schematic diagram; Wind-powered electricity generation input module comprises hand switch SW21, does not control d-c bridge D21, soft start switch group K21, integrated DC filter unit EMI21 and booster circuit unit IGBT21; Hand switch SW21 one end of described module connects photovoltaic module, and the other end connects uncontrollable rectifier device D21 and exchanges end; D21 DC terminal connects soft start switch group K21; The K21 other end connects integrated DC filter unit EMI21; The EMI21 other end is connected with booster circuit unit IGBT21 input; IGBT21 exports the output as this module; Current-voltage sampling transducer CPT21 is set in EMI21 and IGBT21 junction.Insulated gate bipolar transistor IGBT or metal oxide layer semiconductor field-effect transistor MOSFET, supporting adapter circuit, drive singal treatment circuit, autoprotection circuit etc. is integrated with, as independently functional circuit unit in booster circuit unit IGBT21 in wind-powered electricity generation input module; Direct current integrated filter EMI21 is according to concrete electric pressure and current capacity, and the single-stage of integrated customization design or multistage differential mode, common mode filtering circuit, as independently passive filtering functional unit.
Control strategy according to control system sets, and for energy-storage travelling wave tube provides constant current and constant voltage charge pattern, adopts the Double-loop Control Strategy of closed-loop current control and outer voltage, current inner loop under two kinds of patterns respectively.
Specifically as shown in Figure 5, be alternating-current bidirectional module main circuit topology schematic diagram; Alternating-current bidirectional module comprises direct current soft start switch group K31, commutation inversion two-way circuit unit IGBT31, integrated ac filter unit EMI31, power frequency isolation transformer T31, exchanges end soft start switch group K32 and hand switch SW31; Soft start switch group K31 one end of described module connects energy-storage travelling wave tube DC bus, and the other end is connected with the DC terminal of commutation inversion two-way circuit unit IGBT31; The interchange end of IGBT31 connects integrated ac filter unit EMI31; The MEI31 other end connects the former limit of power frequency isolation transformer T31; T31 secondary connects to exchange holds soft start switch group K32; The K32 other end connects hand switch SW31; The SW31 other end is as the output of this module; CPT31 current-voltage sampling transducer is set in EMI31 and T31 junction; Current-voltage sampling transducer CPT32 is set in K32 and SW31 junction.Commutation inversion two-way circuit unit IGBT31 is integrated with insulated gate bipolar transistor IGBT or metal oxide layer semiconductor field-effect transistor MOSFET, supporting adapter circuit, drive singal treatment circuit, autoprotection circuit etc., as independently functional circuit unit; Integrated alternating current filter EMI31 is according to concrete electric pressure and current capacity, and the single-stage of integrated customization design or multistage differential mode, common mode filtering circuit, as independently passive filtering functional unit.
Alternating-current bidirectional module automatically identifies the electrical network and load that exchange end connection, and the control strategy according to setting in advance carries out energy traffic organising;
Control strategy according to control system sets, and for energy-storage travelling wave tube provides constant current and constant voltage charge and discharge mode, adopts the Double-loop Control Strategy of closed-loop current control and outer voltage, current inner loop under two kinds of patterns respectively;
Multiple identical capacity exchanges two-way modules can be set to synchronous operation arranged side by side; Alternating-current bidirectional module AC is directly parallel in together, then is connected with same AC power or AC load, is controlled, realize synchronous operation arranged side by side by the coordinate synchronization of multiple alternating-current bidirectional module control unit; The alternating-current bidirectional module of multiple identical capacity or different capabilities can be set to apportion asynchronous operation; The alternating-current bidirectional module of apportion asynchronous operation exchanges end and is connected with respective AC power or AC load respectively, under the independence of respective alternating-current bidirectional module control unit controls, carries out rectification state or inverter mode operation according to the control strategy preset;
Specifically as shown in Figure 6, be direct current output module main circuit topology schematic diagram; Direct current output module comprises soft start switch group K41, isolated form full-bridge DC/DC circuit unit IGBT41, integrated DC filter unit EMI41 and hand switch SW41; Soft start switch group K41 one end of described module connects energy-storage travelling wave tube DC bus, and the other end is connected with isolated form full-bridge DC/DC circuit unit IGBT41 input; IGBT41 output connects integrated DC filter unit EMI41; The EMI41 other end connects hand switch SW41; The other end of SW41 is as the output of this module; Current-voltage sampling transducer CPT41 is set in IGBT41 and EMI41 junction.Isolated form full-bridge DC/DC circuit unit IGBT41 is integrated with high-frequency isolation transformer, insulated gate bipolar transistor IGBT or metal oxide layer semiconductor field-effect transistor MOSFET, supporting adapter circuit, drive singal treatment circuit, autoprotection circuit etc., as independently functional circuit unit; Employing high-frequency isolation transformer in isolated form full-bridge DC/DC circuit unit IGBT41, transformer core selects the material such as ferrite, metal magnetic powder core; Integrated alternating current filter EMI41 is according to concrete electric pressure and current capacity, and the single-stage of integrated customization design or multistage differential mode, common mode filtering circuit, as independently passive filtering functional unit; For different output voltages and output capacity, need the power device of customized module inside, high frequency transformer and control strategy etc.;
Control strategy according to control system sets, and direct current output module only arranges constant voltage mode of operation, adopts the Double-loop Control Strategy of outer voltage, current inner loop;
In sum, the embody rule realization flow of the energy storage power device based on distributed energy alternating current-direct current mixing access of embodiment is as follows:
1, according to selecting type of modules and quantity under actual conditions.
2, input corresponding for each module, output interface are connected with corresponding distributed power source or load, connection main circuit circuit,
Secondary line.
3, each module control interface is connected with controller corresponding interface.
4, corresponding control strategy is inputted at control inerface, closed each module hand switch.
5, self-inspection is started; Return if any fault-signal, fix a breakdown or again start self-inspection after shielding corresponding module; If fault-free signal returns, start fully automatic operation pattern, system is normally run.
The energy storage power device typical apply based on distributed energy alternating current-direct current mixing access of embodiment is as follows:
Embodiment typical apply 1:
Photovoltaic, wind-powered electricity generation, diesel engine generator alternating current-direct current mixing access, as field power supply.
Concrete internal module electrical connection as shown in Figure 7.Adopt three photovoltaic input modules, three wind-powered electricity generation input modules, alternating-current bidirectional module as the input power of device; Adopt an alternating-current bidirectional module, two direct current output modules as exporting as load supplying.
Embodiment typical apply 2:
Photovoltaic, wind-powered electricity generation, civil power alternating current-direct current mixing access, as family new forms of energy connecting system.
Concrete internal module connects as shown in Figure 8.Adopt three photovoltaic input modules, three wind-powered electricity generation input modules as the distributed energy input power of device; Adopt an alternating-current bidirectional module as the connecting interface of device and civil power.
The energy storage power device based on distributed energy alternating current-direct current mixing access in above embodiment typical apply is provided with error protection, specific as follows:
1, device hardware protection comprises IGBT or MOSFET error protection and the switch fault protection of each module way circuit unit; after device detects fault; block the driving pulse of respective modules, jump respective modules switch; send sound and light alarm signal; human-computer interaction interface shows fault message, and non-faulting module is normally run.
2, device software protection comprises alternating current-direct current overvoltage protection, AC/DC overcurrent protection, overheat protector, Sampling device error protection, precharge protection, device inner module communication failure; Artificial or the device-adaptive of software protection action definite value is arranged, and after device detects fault, block respective modules driving pulse, jump respective modules switch, send sound and light alarm signal, human-computer interaction interface shows fault message, non-faulting module is normally run.
The energy storage power device based on distributed energy alternating current-direct current mixing access in above embodiment typical apply can occur four kinds of mode of operations in the middle of running, specific as follows:
1, Auto-Sensing Mode, hand switch is closed, control strategy has been preset, device starts, and apparatus control system can carry out power-on self-test; If system mode is normal, then shows on human-computer interaction interface and whether start, wait for that next step operates; If there is apparatus system fault, at human-computer interaction interface display fault message, No starting, waits for artificial failture evacuation; If find concrete module failure, malfunctioning module shields by human-computer interaction interface, or again start self-inspection after artificial troubleshooting module.
2, operational mode, after device powers on, System self-test is normal, and device enters fully automatic operation pattern.
3, fault mode, after device powers on, System self-test does not pass through, or occurs hardware fault or software fault in running, and device enters fault mode.
4, shutdown mode, when there is emergency protection act or people " suddenly stops " operation for carrying out device, device enters stopped status.
Claims (6)
1., based on an energy storage power device for distributed energy alternating current-direct current mixing access, it is characterized in that:
Described energy storage power device adopts modularized design, special module is arranged for alternating current-direct current input power of different nature and output, namely the special module of alternating current-direct current input power comprises photovoltaic input module, wind-powered electricity generation input module, and the special module of output comprises alternating-current bidirectional module and direct current output module.
2. energy storage power device according to claim 1, is characterized in that:
The input of photovoltaic input module, wind-powered electricity generation input module is directly connected with respective input source respectively, after its outlet side all connects together, is directly connected with energy-storage travelling wave tube DC bus;
Alternating-current bidirectional module DC terminal is connected with energy-storage travelling wave tube DC bus, exchanges end and can connect mains supply or diesel-generator power sources, also can connect AC load; Alternating-current bidirectional module both can be charged to energy-storage travelling wave tube, also can as distributed inverter to grid generation;
The input of direct current output module is connected with energy-storage travelling wave tube DC bus, and output connects DC load; Direct current output module itself, based on customization design, by adjusting the power device of direct current output module inside, high frequency transformer and control strategy, realizes the output of different voltage and power.
3. energy storage power device according to claim 2, is characterized in that:
Photovoltaic input module comprises hand switch, soft start switch group, integrated DC filter unit and booster circuit unit; Described hand switch one end connects photovoltaic module, and the other end connects soft start switch group; The soft start switch group other end connects integrated DC filter unit and booster circuit unit successively; At integrated DC filter unit and booster circuit junction, current-voltage sampling transducer is set; Photovoltaic access module is carried out maximal power tracing (MPPT) to photovoltaic module and is controlled and restriction output power; When many groups photovoltaic access module works simultaneously, adopt crisscross parallel drived control.
4. the energy storage power device according to Claims 2 or 3, is characterized in that:
Alternating-current bidirectional module comprises DC terminal soft start switch group, commutation inversion two-way circuit unit, integrated ac filter unit, power frequency isolation transformer, interchange end soft start switch group and hand switch; Described DC terminal soft start switch group one end connects energy-storage travelling wave tube DC bus, and the other end is connected with the DC terminal of commutation inversion two-way circuit unit; The interchange end of commutation inversion two-way circuit unit connects integrated ac filter unit, power frequency isolation transformer, interchange end soft start switch group and hand switch successively; Integrated ac filter unit with between Industrial Frequency Transformer, exchange to hold between soft start switch group and hand switch current-voltage sampling transducer be all set; Described alternating-current bidirectional module automatically identifies and exchanges the electrical network and load that end connects, and the control strategy according in advance setting carries out energy traffic organising, complete grid-connected, from network operation with and switch from net.
5. the energy storage power device according to the arbitrary claim of claim 2-4, is characterized in that:
Direct current output module comprises soft start switch group, isolated form full-bridge DC/DC circuit unit, integrated DC filter unit and hand switch; Soft start switch group one end of described module connects energy-storage travelling wave tube DC bus, and the other end is connected with isolated form full-bridge DC/DC circuit unit input; Isolated form full-bridge DC/DC circuit unit output connects integrated DC filter unit and hand switch successively; At isolated form full-bridge DC/DC circuit unit and integrated DC filter unit junction, current-voltage sampling transducer is set.
6. the energy storage power device according to the arbitrary claim of claim 2-5, is characterized in that:
Described energy storage power device control system adopts hierarchical logic framework, is divided into two-layer, is respectively module control unit layer and main control unit layer;
Module controls layer comprises an input module central control unit, several alternating-current bidirectional module control units and several direct current output module control units; Input module central control unit is responsible for unifying to control to multiple input module, the independence that each alternating-current bidirectional module control unit is responsible for an alternating-current bidirectional module controls, and the independence that each direct current output module control unit is responsible for a direct current output module controls;
Main control unit layer comprises main control unit, energy-storage travelling wave tube management system and human-computer interaction interface, energy-storage travelling wave tube management system is responsible for intelligent monitoring and the management of energy-storage travelling wave tube, and main control unit is responsible for and input module central control unit, output module control unit, energy-storage travelling wave tube management system, signal communicating between human-computer interaction interface and control to coordinate.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471387A (en) * | 2015-11-26 | 2016-04-06 | 中国空间技术研究院 | Circuit topology and energy management method of satellite power source system |
| CN105871193A (en) * | 2016-06-03 | 2016-08-17 | 东莞市科旺科技股份有限公司 | PLC-based method for controlling transformer two-way soft start |
| CN107623435A (en) * | 2017-09-05 | 2018-01-23 | 华北电力大学 | The two-way common mode differential mode EMI filter and its design method of photovoltaic module tandem |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436785A (en) * | 2008-12-12 | 2009-05-20 | 无锡开普动力有限公司 | Mixing DC power supply control system for communication base station |
| CN101442207A (en) * | 2008-12-30 | 2009-05-27 | 上海市电力公司 | Novel energy storage apparatus |
| US20100039062A1 (en) * | 2008-08-18 | 2010-02-18 | Gong-En Gu | Smart charge system for electric vehicles integrated with alternative energy sources and energy storage |
| CN201650611U (en) * | 2010-04-12 | 2010-11-24 | 山东大学 | Novel hybrid energy system |
| CN201956701U (en) * | 2011-03-12 | 2011-08-31 | 云南电力试验研究院(集团)有限公司 | Single house type AC (Alternating Current)/DC (Direct Current) mixing microgrid |
| CN102684183A (en) * | 2012-05-08 | 2012-09-19 | 吕遥 | DC LAN (Direct Current Local Area Network)-based distributed power generation system and control method |
-
2014
- 2014-12-18 CN CN201410789451.8A patent/CN104505848A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100039062A1 (en) * | 2008-08-18 | 2010-02-18 | Gong-En Gu | Smart charge system for electric vehicles integrated with alternative energy sources and energy storage |
| CN101436785A (en) * | 2008-12-12 | 2009-05-20 | 无锡开普动力有限公司 | Mixing DC power supply control system for communication base station |
| CN101442207A (en) * | 2008-12-30 | 2009-05-27 | 上海市电力公司 | Novel energy storage apparatus |
| CN201650611U (en) * | 2010-04-12 | 2010-11-24 | 山东大学 | Novel hybrid energy system |
| CN201956701U (en) * | 2011-03-12 | 2011-08-31 | 云南电力试验研究院(集团)有限公司 | Single house type AC (Alternating Current)/DC (Direct Current) mixing microgrid |
| CN102684183A (en) * | 2012-05-08 | 2012-09-19 | 吕遥 | DC LAN (Direct Current Local Area Network)-based distributed power generation system and control method |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471387A (en) * | 2015-11-26 | 2016-04-06 | 中国空间技术研究院 | Circuit topology and energy management method of satellite power source system |
| CN105471387B (en) * | 2015-11-26 | 2017-12-22 | 中国空间技术研究院 | The circuit topology and energy management method of a kind of satellite power system |
| CN105871193A (en) * | 2016-06-03 | 2016-08-17 | 东莞市科旺科技股份有限公司 | PLC-based method for controlling transformer two-way soft start |
| CN107976966A (en) * | 2016-10-24 | 2018-05-01 | 费希尔-罗斯蒙特系统公司 | System and method for Modular control system to be merged into process plant |
| CN107623435A (en) * | 2017-09-05 | 2018-01-23 | 华北电力大学 | The two-way common mode differential mode EMI filter and its design method of photovoltaic module tandem |
| CN107623435B (en) * | 2017-09-05 | 2019-11-01 | 华北电力大学 | The two-way common mode differential mode EMI filter and its design method of photovoltaic module tandem |
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| CN108933455A (en) * | 2018-09-11 | 2018-12-04 | 深圳众城卓越科技有限公司 | Over-voltage protection method and device for wind power plant |
| CN110601199A (en) * | 2019-09-12 | 2019-12-20 | 中国电子科技集团公司第十八研究所 | Multi-system input combined module type energy conversion device |
| CN110601199B (en) * | 2019-09-12 | 2022-08-02 | 中国电子科技集团公司第十八研究所 | Multi-system input combined module type energy conversion device |
| CN112531754A (en) * | 2020-12-09 | 2021-03-19 | 武汉易飞信科技有限公司 | Design method of multi-energy-source-accessed energy storage shelter |
| CN112531901A (en) * | 2020-12-09 | 2021-03-19 | 武汉易飞信科技有限公司 | Energy management system for square cabin of mobile power supply |
| CN112713520A (en) * | 2020-12-17 | 2021-04-27 | 中交铁道设计研究总院有限公司 | Off-grid wind-solar energy storage intelligent power supply system |
| CN113193776A (en) * | 2021-05-31 | 2021-07-30 | 上海交通大学 | MMC structure based on synchronous handshake protocol and control method |
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| CN116979671B (en) * | 2023-09-25 | 2023-12-19 | 江苏省现代交通节能减排工程技术研究中心 | Charging and discharging safety management system of energy storage battery pack for wind-solar power generation |
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