CN205283237U - Little electric wire netting leaves net switching power braced system - Google Patents
Little electric wire netting leaves net switching power braced system Download PDFInfo
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- CN205283237U CN205283237U CN201620048380.0U CN201620048380U CN205283237U CN 205283237 U CN205283237 U CN 205283237U CN 201620048380 U CN201620048380 U CN 201620048380U CN 205283237 U CN205283237 U CN 205283237U
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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
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- Y02P80/00—Climate change mitigation technologies for sector-wide applications
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- Y02P80/14—District level solutions, i.e. local energy networks
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Abstract
The utility model relates to a little electric wire netting leaves net switching power braced system belongs to little mains supply technical field. Technical scheme is: distributed generator (1) series connection distributed generator converter (2) back is connected with little electric wire netting ac bus (7), and battery energy memory (3) series connection battery energy memory converters (4) back is connected with little electric wire netting ac bus, and flywheel energy storage system (5) series connection energy storage converters (6) back is connected with little electric wire netting ac bus, little electric wire netting ac bus is connected in little load of power grid (8), and little electric wire netting ac bus connects step up transformer (10) after through the isolator that is incorporated into the power networks (9), and step up transformer connects distribution network ac bus (11). The utility model discloses extremely from the in -process of net operational mode, help main power source fast settling to play voltage and frequency support by the mode switch that is incorporated into the power networks at little grid system, realize the load uninterrupted power supply. It is big that this flywheel energy storage system possesses power density, characteristics that dynamic response is fast.
Description
Technical field
The utility model relates to a kind of micro-capacitance sensor and from net power switched support system, belongs to micro-capacitance sensor power supply technique field.
Background technology
At present, having benefited from national policy and the market requirement, in China's development rapidly, its market potential is very huge for micro-capacitance sensor. Micro-capacitance sensor comprises and being incorporated into the power networks and from network operation two kinds of operational modes. Under the pattern of being incorporated into the power networks, when there is disconnection fault or planned power failure when distribution network, micro-grid system needs to switch to from network operation pattern by the pattern of being incorporated into the power networks; Now the electric voltage frequency needed for whole micro-capacitance sensor can be provided by the energy storage battery energy storage device in micro-capacitance sensor to support as primary source, but, and from net handoff procedure, owing to the response speed of energy storage battery energy storage device is relatively slow, cannot power needed for instantaneous offer micro-capacitance sensor internal loading, the failure that now may cause micro-capacitance sensor and switch from network operation, cause the system cannot normal operation, the electric energy voltage also causing sending and the instantaneous fluctuation of power are bigger, the quality of power supply is poor, affects the normal operation of load. Along with the growth of micro-capacitance sensor, this problems demand solve, therefore, it is to increase micro-capacitance sensor and in net handoff procedure power supply reliability extremely urgent. At present, background technology adopts super capacitor energy-storage mode to provide momentary power to support, it is to increase ask the power supply reliability of electrical network, but, there is reliability low, floor space is big, it may also be useful to the problems such as the life-span is short.
Practical novel content
The utility model object be to provide a kind of micro-capacitance sensor and from net power switched support system, improve the power supply reliability of micro-capacitance sensor, realize the uninterrupted power supply to micro-grid load, when disconnection fault or planned power failure occur when distribution network, micro-grid system needs to switch to from network operation pattern by the pattern of being incorporated into the power networks, in the process of switching, momentary power can be provided to support for micro-capacitance sensor, primary source is helped to set up voltage and frequency support fast, realize load uninterruptedly being powered, solve the problems referred to above that background technology exists.
The technical solution of the utility model is: a kind of micro-capacitance sensor and from net power switched support system, comprise distributed power source, distributed power source current transformer, batteries to store energy device, batteries to store energy device current transformer, flywheel energy storage system, energy accumulation current converter, micro-capacitance sensor ac bus, micro-grid load, grid-connected isolator, step-up transformer and distribution network ac bus, it is connected with micro-capacitance sensor ac bus after the series distributed power converter of distributed power source, it is connected with micro-capacitance sensor ac bus after batteries to store energy device series connection batteries to store energy device current transformer, it is connected with micro-capacitance sensor ac bus after flywheel energy storage system series connection accumulation current transformer, micro-grid load connects micro-capacitance sensor ac bus, and micro-capacitance sensor ac bus is by connecting step-up transformer after grid-connected isolator, and step-up transformer connects distribution network ac bus.
Described distribution network bus voltage is exchange 10kV, and micro-capacitance sensor bus voltage is exchange 400V.
Distributed power source of the present utility model, distributed power source current transformer, batteries to store energy device, batteries to store energy device current transformer, flywheel energy storage system, energy accumulation current converter PCS, grid-connected isolator, step-up transformer etc. are communal technique known in this field, can commercially buy or assemble as required.
Described flywheel energy storage system, for model is the flywheel energy storage system of GTR200, the product that shield stone magnetic energy science and technology limited Company is produced, for electromechanical integrated product, flywheel part is Purely mechanical energy storage, flywheel part and synchronous permanent-magnet motor/generator rotor are integrated, and reduce the overall mechanical dimension of flywheel and dragging motor.
The utility model step-up transformer, between distribution network ac bus and micro-capacitance sensor ac bus, is responsible for the two-way transmission of voltage transitions and the energy carried out between distribution network and micro-capacitance sensor. Grid-connected isolator connects distribution network ac bus and step-up transformer, for micro-grid connection and the switching from network operation pattern. The distributed power source being made up of photovoltaic generating system and wind-force power generation system is in micro-grid system inside, is responsible for providing electric energy to micro-capacitance sensor. Batteries to store energy device is responsible for providing voltage and frequency to support as primary source to micro-grid system in net handoff procedure grid-connected. Micro-grid load is connected to micro-capacitance sensor ac bus, and flywheel energy storage system coordinates energy accumulation current converter PCS to be responsible in the process from net switching provides momentary high power to support.
Flywheel energy storage system is combined by the utility model with micro-grid system, switch to from the process of network operation pattern at micro-grid system by the pattern of being incorporated into the power networks, momentary power can be provided to support for micro-capacitance sensor, primary source is helped to set up voltage and frequency support fast, it is achieved load uninterruptedly to be powered.
The beneficial effects of the utility model: at micro-capacitance sensor by grid-connected to from net handoff procedure, it may be possible to provide momentary power supports, help primary source to set up voltage and frequency support fast, it is achieved load uninterruptedly to be powered, it is to increase the power supply reliability of micro-capacitance sensor. It is big that this flywheel energy storage system possesses power density, it may also be useful to the life-span is long, the feature that dynamic response is fast.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
In figure: distributed power source 1, distributed power source current transformer 2, batteries to store energy device 3, batteries to store energy device current transformer 4, flywheel energy storage system 5, energy accumulation current converter 6, micro-capacitance sensor ac bus 7, micro-grid load 8, grid-connected isolator 9, step-up transformer 10, distribution network ac bus 11.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described further.
A kind of micro-capacitance sensor and from net power switched support system, comprise distributed power source 1, distributed power source current transformer 2, batteries to store energy device 3, batteries to store energy device current transformer 4, flywheel energy storage system 5, energy accumulation current converter 6, micro-capacitance sensor ac bus 7, micro-grid load 8, grid-connected isolator 9, step-up transformer 10 and distribution network ac bus 11, it is connected with micro-capacitance sensor ac bus 7 after the series distributed power converter 2 of distributed power source 1, batteries to store energy device 3 is connected, and batteries to store energy device current transformer 4 is rear to be connected with micro-capacitance sensor ac bus 7, it is connected with micro-capacitance sensor ac bus 7 after flywheel energy storage system 5 series connection accumulation current transformer 6, micro-grid load 8 connects micro-capacitance sensor ac bus 7, and micro-capacitance sensor ac bus 7 is by connecting step-up transformer 10 after grid-connected isolator 9, step-up transformer 10 connects distribution network ac bus 11.
Described distribution network bus voltage is exchange 10kV, and micro-capacitance sensor bus voltage is exchange 400V.
Luminous energy and wind energy natural energy are converted to electric energy by the distributed power source 1 that photovoltaic power generation apparatus and wind power generation plant are formed, and it being delivered to micro-capacitance sensor ac bus 7 by distributed power source current transformer 2, micro-grid load 8 is connected on micro-net ac bus 7 to obtain the normal operation that electric energy realizes equipment.
When the voltage of distribution network ac bus 11 and frequency are normal, micro-grid system is by grid-connected isolator 9, and realizes being incorporated into the power networks of micro-grid system through step-up transformer 10, now can realize the two-way flow of energy. Now the electric voltage frequency of micro-net ac bus 7 is provided to support by distribution network ac bus 11. Flywheel energy storage system 5 operates in charging or maintaining condition. Distributed power source 1 in micro-net and batteries to store energy device 3 adopt meritorious/idle control strategy, according to electrical network specify meritorious, reactive power value carries out following the tracks of and regulates, it is achieved the balance of meritorious and wattless power in micro-net.
When distribution network ac bus 11 voltage and frequency breaks down or during planned power failure, now micro-capacitance sensor need to be switched to from network process by grid-connected, disconnect grid-connected isolator 9, micro-capacitance sensor is in from network operation pattern, by in the grid-connected transient state process to switching from net, batteries to store energy device 3 provides voltage and frequency to support as primary source to micro-grid system, owing to the response speed of energy storage battery energy storage device is relatively slow, cannot power needed for instantaneous offer micro-capacitance sensor internal loading, now flywheel energy storage system 5 is rapidly to micro-capacitance sensor ac bus 7 through energy accumulation current converter 6 provides power to support, maintain the voltage of micro-capacitance sensor ac bus 7 and the uninterrupted power supply of frequency stabilization and micro-grid load 8. micro-capacitance sensor adopts master & slave control mode, batteries to store energy device 3 adopts voltage/frequency control strategy to provide voltage and the frequency reference of whole micro-capacitance sensor ac bus 7, and distributed power source 1 then adopts meritorious/idle control strategy to ensure the power balance of micro-capacitance sensor inside.
Claims (3)
1. a micro-capacitance sensor and from net power switched support system, it is characterized in that: comprise distributed power source (1), distributed power source current transformer (2), batteries to store energy device (3), batteries to store energy device current transformer (4), flywheel energy storage system (5), energy accumulation current converter (6), micro-capacitance sensor ac bus (7), micro-grid load (8), grid-connected isolator (9), step-up transformer (10) and distribution network ac bus (11), distributed power source (1) series distributed power converter (2) is connected with micro-capacitance sensor ac bus (7) afterwards, batteries to store energy device (3) series connection batteries to store energy device current transformer (4) is connected with micro-capacitance sensor ac bus (7) afterwards, flywheel energy storage system (5) series connection accumulation current transformer (6) is connected with micro-capacitance sensor ac bus (7) afterwards, micro-grid load (8) connects micro-capacitance sensor ac bus (7), and micro-capacitance sensor ac bus (7) connects step-up transformer (10) afterwards by grid-connected isolator (9), and step-up transformer (10) connects distribution network ac bus (11).
2. a kind of micro-capacitance sensor according to claim 1 and from net power switched support system, it is characterised in that: described distribution network bus voltage is exchange 10kV, and micro-capacitance sensor bus voltage is exchange 400V.
3. a kind of micro-capacitance sensor according to claim 1 and from net power switched support system, it is characterized in that: described flywheel energy storage system, for model is the flywheel energy storage system of GTR200, electromechanical integrated product, flywheel part is Purely mechanical energy storage, and flywheel part and synchronous permanent-magnet motor/generator rotor are integrated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048380.0U CN205283237U (en) | 2016-01-19 | 2016-01-19 | Little electric wire netting leaves net switching power braced system |
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| CN201620048380.0U CN205283237U (en) | 2016-01-19 | 2016-01-19 | Little electric wire netting leaves net switching power braced system |
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| CN205283237U true CN205283237U (en) | 2016-06-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099994A (en) * | 2016-07-04 | 2016-11-09 | 曾宪瑞 | A kind of control method of the stable electric generation system being adapted to remote districts isolated power network |
| CN107785919A (en) * | 2017-09-22 | 2018-03-09 | 中节能工程技术研究院有限公司 | A kind of mixed energy storage system and its control method |
| CN110176778A (en) * | 2019-03-26 | 2019-08-27 | 国网天津市电力公司电力科学研究院 | A kind of distribution movable energy storage system |
| CN110943486A (en) * | 2019-12-25 | 2020-03-31 | 深圳市永联科技股份有限公司 | Control method for grid-connected and grid-disconnected seamless switching of energy storage inverter |
| WO2023123679A1 (en) * | 2021-12-30 | 2023-07-06 | 北京天诚同创电气有限公司 | Microgrid control method and apparatus and regional power system |
-
2016
- 2016-01-19 CN CN201620048380.0U patent/CN205283237U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099994A (en) * | 2016-07-04 | 2016-11-09 | 曾宪瑞 | A kind of control method of the stable electric generation system being adapted to remote districts isolated power network |
| CN106099994B (en) * | 2016-07-04 | 2017-07-21 | 曾宪瑞 | A kind of control method for the stable electric generation system for being adapted to isolated power network from far-off regions |
| CN107785919A (en) * | 2017-09-22 | 2018-03-09 | 中节能工程技术研究院有限公司 | A kind of mixed energy storage system and its control method |
| CN107785919B (en) * | 2017-09-22 | 2024-05-03 | 中节能工程技术研究院有限公司 | Hybrid energy storage system and control method thereof |
| CN110176778A (en) * | 2019-03-26 | 2019-08-27 | 国网天津市电力公司电力科学研究院 | A kind of distribution movable energy storage system |
| CN110943486A (en) * | 2019-12-25 | 2020-03-31 | 深圳市永联科技股份有限公司 | Control method for grid-connected and grid-disconnected seamless switching of energy storage inverter |
| CN110943486B (en) * | 2019-12-25 | 2023-02-21 | 深圳市永联科技股份有限公司 | Control method for grid-connected and grid-disconnected seamless switching of energy storage inverter |
| WO2023123679A1 (en) * | 2021-12-30 | 2023-07-06 | 北京天诚同创电气有限公司 | Microgrid control method and apparatus and regional power system |
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Address after: 050800 No.12, jiaojiaopu street, North District, high tech Development Zone, Zhengding County, Shijiazhuang City, Hebei Province Patentee after: DUNSHI MAGNETIC ENERGY TECHNOLOGY Co.,Ltd. Address before: 063020 No. 35, Daqing Road, Tangshan City hi tech Development Zone, Hebei Patentee before: DUNSHI MAGNETIC ENERGY TECHNOLOGY Co.,Ltd. |