CN114123320A - OPLC-based distributed power generation system - Google Patents
OPLC-based distributed power generation system Download PDFInfo
- Publication number
- CN114123320A CN114123320A CN202111382852.8A CN202111382852A CN114123320A CN 114123320 A CN114123320 A CN 114123320A CN 202111382852 A CN202111382852 A CN 202111382852A CN 114123320 A CN114123320 A CN 114123320A
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- China
- Prior art keywords
- power generation
- unit
- electric energy
- power supply
- power
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- 238000010248 power generation Methods 0.000 title claims abstract description 76
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention designs an OPLC-based distributed power generation system, which comprises a main power station and a plurality of distributed power stations; the distributed power station comprises sub power generation units, a detection unit and an electric energy transmission unit, wherein the sub power generation units are used for converting external energy into electric energy and transmitting the converted electric energy to the main power station through the electric energy transmission unit; the detection unit is used for detecting the operation information of the sub power generation unit and transmitting the operation information to the main power station; the main power station comprises a main power generation unit, a control unit and a power supply unit, wherein the control unit controls the main power generation unit to provide electric energy for the power supply unit, and is also used for receiving the operation information of the sub power generation units; the invention provides a distributed power generation system, which adopts a mode that a main power station and a sub power station generate power in parallel and can reasonably utilize and output unstable new energy.
Description
Technical Field
The invention relates to the technical field of power generation, in particular to an OPLC-based distributed power generation system.
Background
The existing world power supply system is a centralized single power supply system which is mainly characterized by a large unit, a large power grid and high voltage; although 90% of the worldwide electric loads are supplied by the centralized single large power grid, the quality, safety and reliability of energy and power supply in the modern society are higher and higher, and the large power grid cannot meet the requirements due to the defects of the large power grid; disturbance generated by a fault of any point in a large power grid can cause great influence on the whole power grid, and large-area power failure and even whole-grid breakdown can be caused in serious cases to cause catastrophic results; therefore, a large power grid and a distributed power grid are used for power supply in parallel at present, a distributed power generation system can utilize new energy for power generation, the new energy has the advantage of cleanness, but the power generation is not stable enough, and therefore the problems need to be solved.
Disclosure of Invention
Aiming at the problems, the invention designs an OPLC-based distributed power generation system, which comprises a main power station and a plurality of distributed power stations, wherein the main power station and the plurality of distributed power stations are connected through OPLC cables;
the distributed power station comprises a sub power generation unit, a detection unit and an electric energy transmission unit, wherein the sub power generation unit is used for converting external energy into electric energy and transmitting the electric energy obtained by conversion to the main power station through the electric energy transmission unit; the detection unit is used for detecting the operation information of the sub power generation unit and transmitting the operation information to the main power station;
the main power station comprises a main power generation unit, a control unit and a power supply unit, wherein the control unit controls the main power generation unit to provide electric energy for the power supply unit, and is also used for receiving the operation information of the sub power generation units; the power supply unit is used for being connected with an external power grid and providing electric energy, and the power supply unit is also used for receiving the electric energy of the sub power generation units.
Further, the main power generation unit provides electric energy for the power supply unit through thermal power generation.
Further, the sub-power generation units deliver electrical energy to the main power generation unit through one or more of tidal energy, wind energy, or photovoltaic energy.
Further, the detection unit comprises a current transformer and a voltage transformer, and the current transformer and the voltage transformer are used for detecting current and voltage information of the distributed power station;
the detection unit further comprises a sensor assembly, and the sensor assembly is used for detecting fault information of the distributed power station, wherein the fault information comprises phase-to-phase faults and earth faults.
Furthermore, the control unit comprises a display and a processing module, wherein the processing module is used for processing the operation information of the sub power generation unit and sending the operation information to the display for the display to display.
Further, the power supply unit comprises a storage battery pack, and the storage battery pack is charged by the electric energy provided by the sub power generation units.
Further, the power supply unit comprises a feedback module, and the feedback module is used for detecting the battery capacity of the storage battery;
if the battery capacity reaches a preset high threshold value, the feedback module sends prompt information to the control unit, and the control unit controls the main power generation unit to stop providing electric energy for the power supply unit;
when the battery capacity is lower than a preset low threshold value, the feedback module sends prompt information to the control unit, and the control unit controls the main power generation unit to provide electric energy for the power supply unit.
Further, the power supply unit further comprises a switching module, and the switching module is used for detecting the on-off condition of the main power generation unit and the power supply module;
and when the main power generation unit is disconnected with the power supply module, the switching module starts the storage battery pack to provide electric energy for an external power grid.
The distributed power generation system based on the OPLC designed by the invention can provide reliable electric energy support for an external power grid by adopting a thermal power generation and new energy power generation mode.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an OPLC-based distributed power generation system, which comprises a main power station and a plurality of distributed power stations, wherein the main power station and the plurality of distributed power stations are connected through OPLC cables;
the distributed power station comprises a sub power generation unit, a detection unit and an electric energy transmission unit, wherein the sub power generation unit is used for converting external energy into electric energy and transmitting the electric energy obtained by conversion to the main power station through the electric energy transmission unit; the detection unit is used for detecting the operation information of the sub power generation unit and transmitting the operation information to the main power station;
the main power station comprises a main power generation unit, a control unit and a power supply unit, wherein the control unit controls the main power generation unit to provide electric energy for the power supply unit, and is also used for receiving the operation information of the sub power generation units; the power supply unit is used for being connected with an external power grid and providing electric energy, and the power supply unit is also used for receiving the electric energy of the sub power generation units.
As an embodiment of the present invention, the main power generation unit supplies the power supply unit with electric energy by thermal power generation.
As an embodiment of the invention, the sub power generating units deliver electrical energy to the main power generating unit by one or more of tidal energy, wind energy or photovoltaic energy.
As an embodiment of the present invention, the detection unit includes a current transformer and a voltage transformer, where the current transformer and the voltage transformer are used to detect current and voltage information of the distributed power station;
the detection unit further comprises a sensor assembly, and the sensor assembly is used for detecting fault information of the distributed power station, wherein the fault information comprises phase-to-phase faults and earth faults.
As an embodiment of the present invention, the control unit includes a display and a processing module, and the processing module is configured to process the operation information of the sub power generation unit and send the operation information to the display for display by the display.
As an embodiment of the present invention, the power supply unit includes a secondary battery, and the secondary battery is charged by the electric energy provided by the sub-power generation units.
As an embodiment of the present invention, the power supply unit includes a feedback module for detecting a battery capacity of the storage battery;
if the battery capacity reaches a preset high threshold value, the feedback module sends prompt information to the control unit, and the control unit controls the main power generation unit to stop providing electric energy for the power supply unit;
when the battery capacity is lower than a preset low threshold value, the feedback module sends prompt information to the control unit, and the control unit controls the main power generation unit to provide electric energy for the power supply unit.
As an embodiment of the present invention, the power supply unit further includes a switching module, and the switching module is configured to detect a connection/disconnection condition between the main power generation unit and the power supply module;
and when the main power generation unit is disconnected with the power supply module, the switching module starts the storage battery pack to provide electric energy for an external power grid.
In summary, the OPLC-based distributed power generation system designed in the present invention provides an electric energy support for an external power grid through the following methods, including:
the method comprises the steps that conventional electric energy support is provided for an external power grid through stable thermal power generation of a main power station, meanwhile, a storage battery in a power supply module receives electric energy generated by new energy from a sub power station, and when the electric energy stored in the storage battery reaches a preset threshold value, the storage battery is used for providing electric energy support for the external power grid.
Finally, it is further noted that, herein, relational terms such as one and the other, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The distributed power generation system based on the OPLC comprises a main power station and a plurality of distributed power stations, and is characterized in that the main power station and the plurality of distributed power stations are connected through OPLC cables;
the distributed power station comprises a sub power generation unit, a detection unit and an electric energy transmission unit, wherein the sub power generation unit is used for converting external energy into electric energy and transmitting the electric energy obtained by conversion to the main power station through the electric energy transmission unit; the detection unit is used for detecting the operation information of the sub power generation unit and transmitting the operation information to the main power station;
the main power station comprises a main power generation unit, a control unit and a power supply unit, wherein the control unit controls the main power generation unit to provide electric energy for the power supply unit, and is also used for receiving the operation information of the sub power generation units; the power supply unit is used for being connected with an external power grid and providing electric energy, and the power supply unit is also used for receiving the electric energy of the sub power generation units.
2. The power generation system according to claim 1, wherein the main power generation unit supplies the power supply unit with electric energy by thermal power generation.
3. The power generation system of claim 1, wherein the sub-generation units deliver electrical energy to the main generation unit via one or more of tidal energy, wind energy, or photovoltaic energy.
4. The power generation system according to claim 1, wherein the detection unit includes a current transformer and a voltage transformer for detecting current and voltage information of the distributed power plant;
the detection unit further comprises a sensor assembly, and the sensor assembly is used for detecting fault information of the distributed power station, wherein the fault information comprises phase-to-phase faults and earth faults.
5. The power generation system of claim 1, wherein the control unit comprises a display and a processing module for processing the operational information of the sub-power generation units and sending the operational information to the display for display by the display.
6. The power generation system of claim 1, wherein the power supply unit comprises a battery pack that is charged by the electrical energy provided by the sub-generation units.
7. The power generation system of claim 6, wherein the power supply unit comprises a feedback module for detecting a battery capacity of the battery;
if the battery capacity reaches a preset high threshold value, the feedback module sends prompt information to the control unit, and the control unit controls the main power generation unit to stop providing electric energy for the power supply unit;
when the battery capacity is lower than a preset low threshold value, the feedback module sends prompt information to the control unit, and the control unit controls the main power generation unit to provide electric energy for the power supply unit.
8. The power generation system of claim 6, wherein the power supply unit further comprises a switching module for detecting the on/off condition of the main power generation unit and the power supply module;
and when the main power generation unit is disconnected with the power supply module, the switching module starts the storage battery pack to provide electric energy for an external power grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111382852.8A CN114123320A (en) | 2021-11-22 | 2021-11-22 | OPLC-based distributed power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111382852.8A CN114123320A (en) | 2021-11-22 | 2021-11-22 | OPLC-based distributed power generation system |
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| CN114123320A true CN114123320A (en) | 2022-03-01 |
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| CN202111382852.8A Pending CN114123320A (en) | 2021-11-22 | 2021-11-22 | OPLC-based distributed power generation system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140117912A1 (en) * | 2011-07-04 | 2014-05-01 | Zoran Gajic | System For Detecting Internal Winding Faults Of A Synchronous Generator, Computer Program Product And Method |
| WO2015052824A1 (en) * | 2013-10-11 | 2015-04-16 | 株式会社日立製作所 | Distributed power management system |
| CN108471142A (en) * | 2018-03-14 | 2018-08-31 | 西安电子科技大学 | A kind of distributed power grid Frequency Synchronization and active power distribute control method |
| CN109245115A (en) * | 2018-08-17 | 2019-01-18 | 国网江苏省电力有限公司盐城供电分公司 | A kind of distributed electrical source power supply system |
| US11031785B1 (en) * | 2018-05-24 | 2021-06-08 | Mikhail Valerievich Erokhovets | Device and method for intelligent control of power supply source connection |
-
2021
- 2021-11-22 CN CN202111382852.8A patent/CN114123320A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140117912A1 (en) * | 2011-07-04 | 2014-05-01 | Zoran Gajic | System For Detecting Internal Winding Faults Of A Synchronous Generator, Computer Program Product And Method |
| WO2015052824A1 (en) * | 2013-10-11 | 2015-04-16 | 株式会社日立製作所 | Distributed power management system |
| CN108471142A (en) * | 2018-03-14 | 2018-08-31 | 西安电子科技大学 | A kind of distributed power grid Frequency Synchronization and active power distribute control method |
| US11031785B1 (en) * | 2018-05-24 | 2021-06-08 | Mikhail Valerievich Erokhovets | Device and method for intelligent control of power supply source connection |
| CN109245115A (en) * | 2018-08-17 | 2019-01-18 | 国网江苏省电力有限公司盐城供电分公司 | A kind of distributed electrical source power supply system |
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