CN114256852A - Reactive compensation method for photovoltaic power station and photovoltaic power station - Google Patents
Reactive compensation method for photovoltaic power station and photovoltaic power station Download PDFInfo
- Publication number
- CN114256852A CN114256852A CN202111579378.8A CN202111579378A CN114256852A CN 114256852 A CN114256852 A CN 114256852A CN 202111579378 A CN202111579378 A CN 202111579378A CN 114256852 A CN114256852 A CN 114256852A
- Authority
- CN
- China
- Prior art keywords
- reactive
- distribution cabinet
- photovoltaic power
- waveform
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 230000006641 stabilisation Effects 0.000 claims abstract description 5
- 238000011105 stabilization Methods 0.000 claims abstract description 5
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 5
- 238000013500 data storage Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000013480 data collection Methods 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 description 11
- 238000007599 discharging Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000009125 negative feedback regulation Effects 0.000 description 1
Images
Classifications
-
- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
-
- 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
- H02J3/381—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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
- H02J3/44—Synchronising a generator for connection to a network or to another generator with means for ensuring correct phase sequence
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- 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
-
- 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
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a reactive compensation method for a photovoltaic power station and the photovoltaic power station, which comprise a plurality of solar cell matrixes and a direct current junction station, wherein the direct current junction station is used for collecting electric energy generated by the solar cell matrixes and transmitting the electric energy to a direct current power distribution cabinet; the direct current power distribution cabinet is used for stabilizing and filtering the electric energy and then transmitting the electric energy to the inverter; the inverter converts direct current into alternating current, and then transmits the alternating current to the alternating current distribution cabinet for filtering and voltage stabilization and then transmits the alternating current to the reactive power compensator; the reactive compensator performs reactive power compensation on the electric energy, and improves the power factor. The photovoltaic power station reactive compensation method and the photovoltaic power station disclosed by the invention have the technical effect of synchronous switching by automatically calculating the switching time point through the arranged reactive compensator and automatically switching when the output of the reactive compensator is synchronous with the output phase of the alternating-current power distribution cabinet.
Description
Technical Field
The invention relates to the technical field of photovoltaic power stations, in particular to a reactive power compensation method for a photovoltaic power station and the photovoltaic power station.
Background
The photovoltaic power station is a photovoltaic power generation system which is connected with a power grid and transmits power to the power grid, is a green power development energy project with the greatest national encouragement, and can be divided into an independent power generation system with a storage battery and a grid-connected power generation system without the storage battery. Solar energy power generation divide into light and heat power generation and photovoltaic power generation, and what the solar energy electric energy that gets into commercialization at the present time indicates solar photovoltaic power generation, and photovoltaic power generation product mainly used is three big aspects: firstly, a power supply is provided for a non-electricity occasion; solar electronic products such as various solar chargers, solar street lamps and various solar grassland lamps; thirdly, grid-connected power generation is carried out, which is already popularized and implemented in a large scale in developed countries.
The existing photovoltaic power station grid-connected electric energy is alternating current, inductive electronic equipment consumes reactive power in a circuit, if the reactive power in the circuit is insufficient, loss in the circuit is increased, and the quality of the electric energy transmitted to a power grid is reduced, so that the electric energy generated by a solar power station needs to be subjected to reactive compensation and then is connected to the grid, manual switching is performed by a reactive compensation device in the existing device, and the manual switching causes that a waveform output by the reactive compensation device cannot be well matched with a waveform transmitted to the power grid, so that the reactive compensation effect is reduced.
Disclosure of Invention
The invention discloses a reactive power compensation method for a photovoltaic power station and the photovoltaic power station, and aims to solve the technical problem that manual switching is used for a reactive power compensation device in the conventional device, and the manual switching causes that the waveform output by the reactive power compensation device cannot be well matched with the waveform transmitted to a power grid.
In order to achieve the purpose, the invention adopts the following technical scheme:
the photovoltaic power station comprises a plurality of solar cell square matrixes and a direct current junction station, wherein the direct current junction station is used for collecting and transmitting electric energy generated by the solar cell square matrixes to a direct current power distribution cabinet;
the direct current power distribution cabinet is used for stabilizing and filtering the electric energy and then transmitting the electric energy to the inverter;
the inverter converts direct current into alternating current, and then transmits the alternating current to the alternating current distribution cabinet for filtering and voltage stabilization and then transmits the alternating current to the reactive power compensator;
the reactive compensator performs reactive power compensation on the electric energy, and improves the power factor.
In a preferred scheme, the solar tracking control module is further used for keeping a solar panel in the solar cell square matrix capable of receiving illumination in the largest area.
In a preferred scheme, the solar photovoltaic power generation system further comprises a storage battery pack for storing electric energy and providing the electric energy for a monitoring device of the photovoltaic power station when the illumination is insufficient, and the charging and discharging control module is used for controlling the switching of the hot standby battery pack; compared with manual switching of personnel, the charging or discharging of the storage battery is controlled to be faster through the charging and discharging control module, so that the storage battery is in a hot standby state.
A reactive compensation method based on a photovoltaic power station is characterized in that a phase locker, a sampler, a detector and a controller are arranged in a reactive compensator, and the reactive compensation method comprises the following working steps:
s1: the sampler collects the waveform output by the alternating current power distribution cabinet;
s2: the phase locker calculates a fitting point;
s3: the controller controls the reactive compensator to generate a following waveform according to the fit point;
s4: the sampler simultaneously collects a waveform sample output by the alternating current power distribution cabinet and a waveform sample following the waveform, and the two waveform samples are detected by the detector to be consistent or not;
s5: if the following waveform in the S4 is consistent with the waveform comparison of the output end of the power station, the controller controls the reactive power compensator to be connected to a power grid;
therefore, dynamic compensation is formed through calculation, the switching of the reactive compensator is controlled by the controller, the output result of the reactive compensator is synchronous with the output of the alternating current power distribution cabinet, the quality of electric energy output by a power station is improved, if the comparison result in the S4 is inconsistent, the S1 to the S4 are executed again, and negative feedback adjustment is carried out until the following waveform is consistent with the waveform comparison of the output end of the alternating current power distribution cabinet.
The photovoltaic power station comprises a plurality of solar cell square matrixes and a direct current junction station, wherein the direct current junction station is used for collecting and transmitting electric energy generated by the solar cell square matrixes to a direct current power distribution cabinet; the direct current power distribution cabinet is used for stabilizing and filtering the electric energy and then transmitting the electric energy to the inverter; the inverter converts direct current into alternating current, and then transmits the alternating current to the alternating current distribution cabinet for filtering and voltage stabilization and then transmits the alternating current to the reactive power compensator; the reactive compensator performs reactive power compensation on the electric energy, and improves the power factor. According to the photovoltaic power station reactive compensation method and the photovoltaic power station, the switching time point is automatically calculated through the arranged reactive compensator, and automatic switching is performed when the output of the reactive compensator is synchronous with the output phase of the alternating-current power distribution cabinet, so that the technical effect of synchronous switching is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of a reactive power compensation method for a photovoltaic power station and an overall structure of the photovoltaic power station.
Fig. 2 is a schematic diagram of a reactive compensation method for a photovoltaic power station and a cover plate structure of the photovoltaic power station.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention and technical solutions of the embodiments will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are part of the present invention, but not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention, belong to the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top/bottom", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The reactive power compensation method of the photovoltaic power station and the photovoltaic power station are mainly applied to the situation that manual switching is adopted by a reactive power compensation device in the existing device, and the manual switching causes that the waveform output by the reactive power compensation device and the waveform transmitted to a power grid cannot be well matched.
Referring to fig. 1 and 2, the photovoltaic power station includes a plurality of solar cell matrixes, and further includes a dc junction station, wherein the dc junction station is used for collecting electric energy generated by the plurality of solar cell matrixes and transmitting the electric energy to a dc power distribution cabinet;
the direct-current power distribution cabinet is used for stabilizing and filtering the electric energy and then transmitting the electric energy to the inverter;
the inverter converts the direct current into alternating current, and then transmits the alternating current to the alternating current distribution cabinet for filtering and voltage stabilization and then transmits the alternating current to the reactive power compensator;
the reactive compensator performs reactive power compensation on the electric energy, and improves the power factor.
In a preferred embodiment, the solar photovoltaic power generation system further comprises a sun tracking control module, a storage battery pack and a charge and discharge control module, wherein the sun tracking control module is used for keeping a solar panel in a solar cell matrix to receive illumination in the largest area; compared with manual switching of personnel, the charging or discharging of the storage battery is controlled to be faster through the charging and discharging control module, so that the storage battery is in a hot standby state.
In a preferred embodiment, the solar tracking system further comprises a network communication module, a GPS module, a data collection module and a data storage module, wherein the GPS module is used for generating positioning information, and the positioning information is synchronously updated to a placement point in the solar tracking control module, so that the positioning information is automatically generated, the positioning is more accurate, and the working efficiency is higher.
In a preferred embodiment, the data collection module collects the position data of the sun consistent with the positioning information through the network communication module and stores the position data into the data storage module; the solar tracking control system is universal in the world, and the sun position at each moment in the year is stored in the data storage module to be found, namely the tracking is realized by calculating the sun position.
A reactive compensation method based on the photovoltaic power station is characterized in that a phase locker, a sampler, a detector and a controller are arranged in a reactive compensator, and the reactive compensation method comprises the following working steps:
s1: the sampler collects waveforms output by the alternating current power distribution cabinet;
s2: calculating a fit point by the phase locker;
s3: the controller controls the reactive compensator to generate a following waveform according to the conjunction point;
s4: the sampler simultaneously collects a waveform sample output by the AC power distribution cabinet and a waveform sample following the waveform, and the two waveform samples are detected by the detector to be consistent or not;
s5: if the following waveform in the S4 is consistent with the waveform comparison of the output end of the power station, the controller controls the reactive power compensator to be connected into the power grid;
therefore, dynamic compensation is formed through calculation, the switching of the reactive compensator is controlled by the controller, the output result of the reactive compensator is synchronous with the output of the alternating current power distribution cabinet, and the quality of the electric energy output by the power station is improved.
And if the comparison result in the S4 is inconsistent, executing the steps from S1 to S4 again, and performing negative feedback regulation until the following waveform is consistent with the waveform comparison of the output end of the alternating current power distribution cabinet.
The time length of each acquisition of S1 and S4 is longer than the period time length of the current output by the AC power distribution cabinet, so that the phase locker can calculate a conjunction point from the acquired samples, and the conjunction point comprises the frequency, the peak value and the initial phase of the output electric energy of the AC power distribution cabinet.
The switching time point is automatically calculated through the arranged reactive compensator, and automatic switching is carried out when the output of the reactive compensator is synchronous with the output phase of the alternating-current power distribution cabinet, so that the technical effect of synchronous and accurate switching is achieved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The photovoltaic power station comprises a plurality of solar cell square matrixes and is characterized by further comprising a direct current junction station, wherein the direct current junction station is used for collecting and transmitting electric energy generated by the solar cell square matrixes to a direct current power distribution cabinet;
the direct current power distribution cabinet is used for stabilizing and filtering the electric energy and then transmitting the electric energy to the inverter;
the inverter converts direct current into alternating current, and then transmits the alternating current to the alternating current distribution cabinet for filtering and voltage stabilization and then transmits the alternating current to the reactive power compensator;
the reactive compensator performs reactive power compensation on the electric energy, and improves the power factor.
2. The photovoltaic power plant of claim 1 further comprising a sun tracking control module for maintaining a maximum area of illumination received by the solar panels in the solar array.
3. The photovoltaic power plant of claim 1 further comprising a battery pack for storing electrical energy for providing electrical energy to monitoring devices of the photovoltaic power plant during periods of low light.
4. The photovoltaic power plant of claim 3 further comprising a charge and discharge control module for controlling the switching of the hot spare battery pack.
5. The photovoltaic power plant of claim 4 further comprising a network communication module, a GPS module, a data collection module, and a data storage module, the GPS module configured to generate positioning information that is updated synchronously to a point of placement in the solar tracking control module.
6. The photovoltaic power plant of claim 5 wherein the data collection module collects position data of the sun consistent with the positioning information via a network communication module and stores the position data in the data storage module.
7. The reactive compensation method for the photovoltaic power station is characterized in that a phase locker, a sampler, a detector and a controller are arranged in the reactive compensator, and the method comprises the following working steps:
s1: the sampler collects the waveform output by the alternating current power distribution cabinet;
s2: the phase locker calculates a fitting point;
s3: the controller controls the reactive compensator to generate a following waveform according to the fit point;
s4: the sampler simultaneously collects a waveform sample output by the alternating current power distribution cabinet and a waveform sample following the waveform, and the two waveform samples are detected by the detector to be consistent or not;
s5: if the following waveform in the S4 is consistent with the waveform comparison of the output end of the power station, the controller controls the reactive power compensator to be connected to a power grid;
therefore, dynamic compensation is formed through calculation, the switching of the reactive compensator is controlled by the controller, and the output result of the reactive compensator is synchronous with the output of the alternating current power distribution cabinet.
8. The reactive compensation method of claim 7, wherein if the comparison result in S4 is inconsistent, the steps S1 to S4 are repeated until the follow-up waveform is consistent with the waveform at the output end of the AC distribution cabinet.
9. The reactive compensation method of claim 8, wherein the duration of each acquisition of S1 and S4 is greater than the period duration of the current output by the AC distribution cabinet.
10. The reactive compensation method of claim 7, wherein the engagement points include frequency, peak value, and initial phase of the AC distribution cabinet output power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111579378.8A CN114256852A (en) | 2021-12-22 | 2021-12-22 | Reactive compensation method for photovoltaic power station and photovoltaic power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111579378.8A CN114256852A (en) | 2021-12-22 | 2021-12-22 | Reactive compensation method for photovoltaic power station and photovoltaic power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114256852A true CN114256852A (en) | 2022-03-29 |
Family
ID=80794197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111579378.8A Pending CN114256852A (en) | 2021-12-22 | 2021-12-22 | Reactive compensation method for photovoltaic power station and photovoltaic power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114256852A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490305A (en) * | 2016-02-02 | 2016-04-13 | 国网上海市电力公司 | Distributed energy access system and power grid power factor improving method thereof |
| CN107425530A (en) * | 2017-08-16 | 2017-12-01 | 卧龙电气集团辽宁荣信电气传动有限公司 | A kind of high voltage converter and reactive-load compensation integration topological structure and method |
| CN107885235A (en) * | 2017-11-17 | 2018-04-06 | 苏州聚晟太阳能科技股份有限公司 | Suitable for the intelligent-tracking control device and method of photovoltaic tracking |
| CN209731140U (en) * | 2019-05-28 | 2019-12-03 | 北京国电龙庆科技有限公司 | Photovoltaic generating system |
-
2021
- 2021-12-22 CN CN202111579378.8A patent/CN114256852A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490305A (en) * | 2016-02-02 | 2016-04-13 | 国网上海市电力公司 | Distributed energy access system and power grid power factor improving method thereof |
| CN107425530A (en) * | 2017-08-16 | 2017-12-01 | 卧龙电气集团辽宁荣信电气传动有限公司 | A kind of high voltage converter and reactive-load compensation integration topological structure and method |
| CN107885235A (en) * | 2017-11-17 | 2018-04-06 | 苏州聚晟太阳能科技股份有限公司 | Suitable for the intelligent-tracking control device and method of photovoltaic tracking |
| CN209731140U (en) * | 2019-05-28 | 2019-12-03 | 北京国电龙庆科技有限公司 | Photovoltaic generating system |
Non-Patent Citations (1)
| Title |
|---|
| 全国电力工人技术教育供电委员会: "变电运行岗位技能培训教材（220kV）", 重启大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102104257B (en) | Energy storage system of apartment building, integrated power management system, and method of controlling the system | |
| CN102170150B (en) | Power storage system | |
| CN202019227U (en) | Air conditioner and power supply system thereof | |
| US10784702B2 (en) | Battery control device, battery control system, battery control method,and recording medium | |
| CN103545907B (en) | Office photovoltaic DC power-supply system and control method | |
| CN108155638B (en) | Control equipment and control method of direct-current micro-grid and direct-current micro-grid system | |
| CN105515033A (en) | Method for controlling power coordination of light storage micro-grid system | |
| CN102074970A (en) | Energy management system and grid-connected energy storage system including the energy management system | |
| KR20120027782A (en) | Apparatus and method of tracking maximum power point, and operating method of grid connected power storage system using the same | |
| CN104682448A (en) | Operation and monitoring method for battery energy storage power station based on power prediction | |
| CN102480167A (en) | Air conditioner and power supply system thereof | |
| CN105356505A (en) | Multi-source distributed power generation system suitable for micro electrical network and control method | |
| US20170063147A1 (en) | Power source system | |
| CN104701882A (en) | Monitoring method of micro-grid system capable of automatically realizing energy balance | |
| CN112751357B (en) | Photovoltaic energy storage system and control method thereof | |
| CN104682410A (en) | Micro-grid system capable of automatically realizing energy balance | |
| CN104659800A (en) | Power prediction based monitoring device for battery energy storage power station | |
| CN105305466A (en) | Photovoltaic-energy storage combined power generation integrated energy management system | |
| CN113746160A (en) | Photovoltaic energy charging and battery replacing cabinet system and method | |
| CN114256852A (en) | Reactive compensation method for photovoltaic power station and photovoltaic power station | |
| CN104767468A (en) | Solar server control system and method | |
| WO2022057363A1 (en) | Photovoltaic direct-current direct-feed power generation method and apparatus based on controllable power supply | |
| Jena et al. | Performance analysis of solar PV based microgrid with and without BESS estimating the expected battery life | |
| CN115360723A (en) | Intermittent tail end low-voltage split-phase treatment system and method | |
| Zhao et al. | Research of voltage control strategy for power management system in DC microgrid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |