CN104467146A - Electric energy intelligent allocation commutation device - Google Patents
Electric energy intelligent allocation commutation device Download PDFInfo
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- CN104467146A CN104467146A CN201310428147.6A CN201310428147A CN104467146A CN 104467146 A CN104467146 A CN 104467146A CN 201310428147 A CN201310428147 A CN 201310428147A CN 104467146 A CN104467146 A CN 104467146A
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- 230000005611 electricity Effects 0.000 claims abstract description 27
- 238000004146 energy storage Methods 0.000 claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims description 25
- 239000000470 constituent Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 241001672018 Cercomela melanura Species 0.000 abstract 3
- 230000000151 anti-reflux effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000005622 photoelectricity Effects 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the technical field of new energy electric power, and specifically relates to an electric energy intelligent allocation commutation device. Through external DC electric power supplying power for the electric energy intelligent allocation commutation device, the device is started and operates to complete black start of a microgrid. In power utilization peak time and during the period the external DC electric power cannot supply power, a DC input port of a storage battery accesses a DC bus and is connected with an electronic control switching and protection circuit through an anti-reflux circuit, and is connected with an external DC electric power transfer-out port through the electronic control switching and protection, so that the storage battery is externally connected with a grid-connected inverter to supply power for the microgrid, thereby greatly improving power supply output of the microgrid. Under the conditions of not increasing the matching scale of energy storage subsystems and not increasing auxiliary power supply electric sources, the device realizes black start and having the maximum output of an electricity generating period for all weather through regulating a photovoltaic array of a generation subsystem and power supply paths and power supply methods of storage battery sets of energy storage subsystems. Thus, problems that the microgrid cannot black start and cannot have the maximum output of an electricity generating period for all weather caused by schemes in the prior art.
Description
Technical field
The invention belongs to new forms of energy technical field of electric power, be specifically related to a kind of electric energy intelligent allocation current converter.
Background technology
It is main micro-capacitance sensor mode that distributed new electric power application development trends towards using by oneself, fairly large application item is mostly form from net type micro-capacitance sensor, particularly photoelectricity or wind-powered electricity generation are that main generation of electricity by new energy is powered micro-grid system, prior art adopts small rotor electricity generation system (as: diesel generating set generating) mostly, voltage source is it can be used as to support micro-capacitance sensor power line, photoelectricity (or wind-powered electricity generation) is run with current source mode, as the grid-connected power supply unit of micro-capacitance sensor, due to its photoelectricity or wind-powered electricity generation unstable power, need by configuration energy-storage units, in order to stabilize the unsteadiness of photoelectricity (or wind-powered electricity generation), configure a certain proportion of energy storage subsystem and reasonably system set up reliable and stable generating and power micro-grid system with photoelectricity for such as shown in Fig. 1,
As mentioned above, wherein the prior art core of micro-capacitance sensor is, utilize Diesel engine to generate electricity as the support electric power of micro-capacitance sensor, set up power grid environment and ensure that micro-capacitance sensor power line has stable voltage and frequency, making photovoltaic generation unit be generated electricity by combining inverter and power to micro-capacitance sensor; In order to make unstable photovoltaic electric power energy stable power-supplying to user load, being regulated the electric power surplus and deficiency of micro-capacitance sensor by configuration energy storage subsystem, stabilizing the power fluctuation of micro-capacitance sensor.
Prior art utilizes Diesel engine to generate electricity as the support electric power of micro-capacitance sensor, and its diesel generation not only cost is high, and causes environmental pollution.To this, the scientific worker of new forms of energy electric power circle, in order to change this situation, iting is desirable to remove diesel engine generator generating as supporting, building the micro-grid system of the brand-new energy, as shown in Figure 2;
Utilize bidirectional energy-storage converter as the voltage source of micro-capacitance sensor, diesel oil substitute generator unit supports and sets up micro-capacitance sensor must obligato voltage and frequency, and photovoltaic generation unit in micro-capacitance sensor is generated electricity by way of merging two or more grid systems.
During owing to utilizing the voltage source of bidirectional energy-storage converter as micro-capacitance sensor, discharge and recharge is not controlled, the energy-storage system as voltage source can be made to produce overcharge or cross to put, particularly photovoltaic generation be intermittent generate electricity according to sunlight many and few corresponding many and few, generating depends on the situation of weather, weather hold may can not generate electricity for continuous several days, this just impels energy-storage system to produce the situation of putting, the bidirectional energy-storage converter as voltage source device can be made to produce protectiveness shut down, paralyse to making micro-capacitance sensor, more seriously now must charge at energy-storage system the electricity reaching starting resistor as the bidirectional energy-storage converter of voltage source device could startup optimization again, because micro-capacitance sensor is stopped transport, even if now weather possesses the condition of generating, because (photovoltaic) combining inverter has anti-isolated island function, when electrical network and micro-capacitance sensor power line are without electricity, its anti-isolated island function can stop its generating power supply, therefore combining inverter also can not generate electricity power supply, so prior art mostly adopts controlled diesel generating set, in addition, be that user load is powered in the generating period by power generation sub-system and energy storage subsystem muck in, in case of bad weather power generation sub-system can not power time, energy storage subsystem is only had to power, minimizing of now exerting oneself can not meet the normal electricity consumption demand of user load, mostly adopting the configuration by increasing energy storage subsystem to reach the object increasing and power and exert oneself to this prior art, significantly can increase investment like this and causing the wasting of resources.
Many weeks, the generator unit to start micro-capacitance sensor generates electricity and powers, and just must make energy storage subsystem first can starting up's energy storage bi-directional inverter, sets up voltage and the frequency of micro-capacitance sensor, and photovoltaic cells can be generated electricity power supply.Because the starting resistor of the energy storage bi-directional inverter of prior art is higher than discharge prevention voltage, so after discharge prevention, cannot black starting-up be realized, even if photovoltaic can generate electricity, also can not startup optimization because of micro-capacitance sensor no-voltage source.
Summary of the invention
In order to overcome these defects of prior art and scheme, make micro-capacitance sensor round-the-clock maximum output possessing the generating period when not increasing energy storage subsystem power output device, and realize black starting-up and weather when possessing the condition of generating, just energy starting resistor source apparatus, make micro-capacitance sensor power line set up voltage and frequency, recover micro-capacitance sensor operation and generating power supply.The present invention proposes a kind of electric energy intelligent allocation current converter, do not increasing under the condition that energy storage subsystem proportioning scale do not increase auxiliary power supply electric power source yet, by regulating and controlling supply path and the supply power mode of the photovoltaic array of power generation sub-system and the batteries of energy storage subsystem, realize black starting-up and the round-the-clock object of maximum output possessing the generating period, solve prior art thus and cause micro-capacitance sensor can not black starting-up and the round-the-clock difficult problem possessing generating period maximum output can not be realized.
The present invention proposes a kind of electric energy intelligent allocation current converter; comprise: two-way converter circuit module, DC bus, batteries direct-flow input end mouth, counterflow-preventing circuit, electric-controlled switch and protective circuit, external direct current power input port, device intelligent control module, device bus, converter circuit ac output end mouth, apparatus system energy supply control module, device internal power supply module, device inside power supply circuit, external direct current power identification circuit, external input direct-current power line and external direct current power produce port, it is characterized in that:
Batteries direct-flow input end mouth connects two-way converter circuit module by DC bus, connects converter circuit ac output end mouth by two-way converter circuit module, forms the two-way change of current electrical path of energy storage;
Connect DC bus through counterflow-preventing circuit after accessing electric-controlled switch and protective circuit by external direct current power input port and be communicated with two-way converter circuit module, by two-way converter circuit model calling converter circuit ac output end mouth, form external direct current power and to power change of current path;
Batteries direct-flow input end mouth and external direct current power input port be jockey system power supply control module respectively, by apparatus system energy supply control module jockey internal power supply, device internal power supply module accesses two-way converter circuit module and device intelligent control module by device inside power supply circuit, constituent apparatus in-line power path;
External direct current power input port access electric-controlled switch and protective circuit connect external direct current power by electric-controlled switch and protective circuit and produce port, and what form external direct current power produces electrical path;
Accessed after DC bus by batteries direct-flow input end mouth and connect electric-controlled switch and protective circuit through counterflow-preventing circuit, and connect external direct current power through electric-controlled switch and protective circuit and produce port, form the electrical path of the external direct current supply of batteries;
Device intelligent control module connects two-way converter circuit module, counterflow-preventing circuit, electric-controlled switch and protective circuit, external direct current power identification circuit by device bus, forms monitoring communications link;
External direct current power identification circuit connects external DC power line and apparatus system energy supply control module respectively by device bus, forms external direct current power monitor message path.
A kind of electric energy intelligent allocation of the present invention current converter, is further characterized in that storage battery is all connected with device internal power supply by apparatus system energy supply control module with external direct current power source, forms electric energy intelligent allocation current converter electricity consumption supply path.
Instant invention overcomes the defect of prior art, micro-capacitance sensor is made particularly thoroughly to have broken away from the dependence to diesel engine generator from net type micro-capacitance sensor, the present invention is under the prerequisite not increasing system scale resource, thoroughly solve the self-starting black starting-up of micro-capacitance sensor and generation of electricity by new energy electric power system and increase micro-capacitance sensor and to power a key technology difficult problem of exerting oneself, generation of electricity by new energy electric power system is made not only no longer to rely on diesel engine generator or other controlled energy sources, but also reduce investment outlay and O&M cost, clean environment firendly especially more.
Accompanying drawing explanation
Fig. 1 is the principle schematic that prior art builds from net type micro-capacitance sensor.
Fig. 2 is that prior art does not have diesel generation unit new forms of energy from the principle schematic of net type micro-capacitance sensor.
Fig. 3 is a kind of principle schematic of electric energy intelligent allocation current converter system.
Embodiment
As examples of implementation, composition graphs 1 is described a kind of electric energy intelligent allocation current converter, but technology of the present invention and scheme are not limited to the content that the present embodiment provides.
Prior art builds the principle schematic from net type micro-capacitance sensor, as shown in Figure 1.
Prior art does not have diesel generation unit new forms of energy from the principle schematic of net type micro-capacitance sensor, as shown in Figure 2.
As shown in Figure 3, a kind of electric energy intelligent allocation current converter of the present invention, comprise: two-way converter circuit module (1), DC bus (2), batteries direct-flow input end mouth (3), counterflow-preventing circuit (4), electric-controlled switch and protective circuit (5), external direct current power input port (6), device intelligent control module (7), device bus (8), converter circuit ac output end mouth (9), apparatus system energy supply control module (10), device internal power supply module (11), device inside power supply circuit (12), external direct current power identification circuit (13), external input direct-current power line (14) and external direct current power produce port (15), it is characterized in that:
Batteries direct-flow input end mouth (3) connects two-way converter circuit module (1) by DC bus (2), connect converter circuit ac output end mouth (9) by two-way converter circuit module (1), form the two-way change of current electrical path of energy storage;
Access electric-controlled switch and protective circuit (5) by external direct current power input port (6) to connect DC bus (2) by counterflow-preventing circuit (4) and be communicated with two-way converter circuit module (1), connect converter circuit ac output end mouth (9) by two-way converter circuit module (1), form external direct current power and to power change of current path;
Batteries direct-flow input end mouth (3) and external direct current power input port (6) jockey system power supply control module (10) respectively, by apparatus system energy supply control module (10) jockey internal power supply (11), device internal power supply module (11) accesses two-way converter circuit module (1) and device intelligent control module (7) by device inside power supply circuit (12), constituent apparatus in-line power path;
External direct current power input port (6) access electric-controlled switch and protective circuit (5) connect external direct current power by electric-controlled switch and protective circuit (5) and produce port (15), and what form external direct current power produces electrical path;
Access DC bus (2) by batteries direct-flow input end mouth (3) and connect electric-controlled switch and protective circuit (5) by counterflow-preventing circuit (4), and connect external direct current power through electric-controlled switch and protective circuit (5) and produce port (15), form the electrical path of the external direct current supply of batteries;
Device intelligent control module (7) connects two-way converter circuit module (1), counterflow-preventing circuit (4), electric-controlled switch and protective circuit (5), external direct current power identification circuit (13) by device bus (8), forms monitoring communications link;
External direct current power identification circuit (13) connects external DC power line (14) and apparatus system energy supply control module (10) respectively by device bus (8), forms external direct current power monitor message path.
A kind of electric energy intelligent allocation of the present invention current converter, be further characterized in that storage battery is all connected with device internal power supply (11) by apparatus system energy supply control module (10) with external direct current power source, form electric energy intelligent allocation current converter electricity consumption supply path.
Utilize a kind of electric energy intelligent allocation current converter of the present invention to form from net type micro-capacitance sensor, when generator unit possesses power generation conditions, be that electric energy intelligent allocation current converter of the present invention is powered by external direct current power, make its start-up and operation, and the black starting-up completing micro-capacitance sensor as the two-way converter circuit module (1) of voltage source V F convertor unit can be realized, thus micro-capacitance sensor is normally run and the power supply that generates electricity, after normal operation, external direct current power connects external direct current power by external direct current power input port (6) access electric-controlled switch and protective circuit (5) by electric-controlled switch and protective circuit (5) control realization and produces port (15), external direct current power access grid-connected inverter is made to be that micro-capacitance sensor is powered, can not power the period in peak of power consumption and external direct current power, access DC bus (2) by batteries direct-flow input end mouth (3) and connect electric-controlled switch and protective circuit (5) by counterflow-preventing circuit (4), and connect external direct current power through electric-controlled switch and protective circuit (5) and produce port (15), make the external combining inverter of batteries be that micro-capacitance sensor is powered, the power supply greatly increasing micro-capacitance sensor is exerted oneself.
Claims (2)
1. an electric energy intelligent allocation current converter, comprise: two-way converter circuit module (1), DC bus (2), batteries direct-flow input end mouth (3), counterflow-preventing circuit (4), electric-controlled switch and protective circuit (5), external direct current power input port (6), device intelligent control module (7), device bus (8), converter circuit ac output end mouth (9), apparatus system energy supply control module (10), device internal power supply module (11), device inside power supply circuit (12), external direct current power identification circuit (13), external input direct-current power line (14) and external direct current power produce port (15), it is characterized in that:
Batteries direct-flow input end mouth (3) connects two-way converter circuit module (1) by DC bus (2), connect converter circuit ac output end mouth (9) by two-way converter circuit module (1), form the two-way change of current electrical path of energy storage;
Access electric-controlled switch and protective circuit (5) by external direct current power input port (6) to connect DC bus (2) by counterflow-preventing circuit (4) and be communicated with two-way converter circuit module (1), connect converter circuit ac output end mouth (9) by two-way converter circuit module (1), form external direct current power and to power change of current path;
Batteries direct-flow input end mouth (3) and external direct current power input port (6) jockey system power supply control module (10) respectively, by apparatus system energy supply control module (10) jockey internal power supply (11), device internal power supply module (11) accesses two-way converter circuit module (1) and device intelligent control module (7) by device inside power supply circuit (12), constituent apparatus in-line power path;
External direct current power input port (6) access electric-controlled switch and protective circuit (5) connect external direct current power by electric-controlled switch and protective circuit (5) and produce port (15), and what form external direct current power produces electrical path;
Access DC bus (2) by batteries direct-flow input end mouth (3) and connect electric-controlled switch and protective circuit (5) by counterflow-preventing circuit (4), and connect external direct current power through electric-controlled switch and protective circuit (5) and produce port (15), form the electrical path of the external direct current supply of batteries;
Device intelligent control module (7) connects two-way converter circuit module (1), counterflow-preventing circuit (4), electric-controlled switch and protective circuit (5), external direct current power identification circuit (13) by device bus (8), forms monitoring communications link;
External direct current power identification circuit (13) connects external DC power line (14) and apparatus system energy supply control module (10) respectively by device bus (8), forms external direct current power monitor message path.
2. a kind of electric energy intelligent allocation current converter according to claim 1, be further characterized in that storage battery is all connected with device internal power supply (11) by apparatus system energy supply control module (10) with external direct current power source, form electric energy intelligent allocation current converter electricity consumption supply path.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428147.6A CN104467146B (en) | 2013-09-22 | 2013-09-22 | A kind of electric energy intelligent allocation current converter |
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| CN201310428147.6A CN104467146B (en) | 2013-09-22 | 2013-09-22 | A kind of electric energy intelligent allocation current converter |
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| CN104467146A true CN104467146A (en) | 2015-03-25 |
| CN104467146B CN104467146B (en) | 2017-10-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882906A (en) * | 2015-05-04 | 2015-09-02 | 华电电力科学研究院 | Distributed micro-grid black-start control system and method based on photovoltaic and energy storage |
| CN108964011A (en) * | 2017-05-22 | 2018-12-07 | 周锡卫 | A kind of energy storage current converter and control method |
| CN109217348A (en) * | 2017-06-29 | 2019-01-15 | 周锡卫 | A kind of the black starting-up device and control method of scene power supply micro-capacitance sensor |
| CN109687520A (en) * | 2019-01-07 | 2019-04-26 | 浙江中光新能源科技有限公司 | A kind of photovoltaic for electric power isolated network and photothermal complementary electricity generation system |
-
2013
- 2013-09-22 CN CN201310428147.6A patent/CN104467146B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882906A (en) * | 2015-05-04 | 2015-09-02 | 华电电力科学研究院 | Distributed micro-grid black-start control system and method based on photovoltaic and energy storage |
| CN108964011A (en) * | 2017-05-22 | 2018-12-07 | 周锡卫 | A kind of energy storage current converter and control method |
| CN108964011B (en) * | 2017-05-22 | 2020-06-19 | 周锡卫 | Control method applied to energy storage commutation device |
| CN109217348A (en) * | 2017-06-29 | 2019-01-15 | 周锡卫 | A kind of the black starting-up device and control method of scene power supply micro-capacitance sensor |
| CN109217348B (en) * | 2017-06-29 | 2024-03-08 | 周锡卫 | Control method of black start device of wind-light power supply micro-grid |
| CN109687520A (en) * | 2019-01-07 | 2019-04-26 | 浙江中光新能源科技有限公司 | A kind of photovoltaic for electric power isolated network and photothermal complementary electricity generation system |
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| Publication number | Publication date |
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| CN104467146B (en) | 2017-10-27 |
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Effective date of registration: 20231221 Address after: Unit 7, 3rd Floor, No. 1115 Fangshan North 2nd Road, Majiang Street, Xiang'an District, Xiamen City, Fujian Province, 361100 Patentee after: Xiamen Xinshuneng Power Technology Co.,Ltd. Address before: Room 301, No. 2 North Building, No. 8 Nanhun Road, Chaoyang District, Beijing 100102 Patentee before: Zhou Xiwei |
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