CN103337886B - Industrial park wind-light storage micro-grid system - Google Patents
Industrial park wind-light storage micro-grid system Download PDFInfo
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- CN103337886B CN103337886B CN201310249902.4A CN201310249902A CN103337886B CN 103337886 B CN103337886 B CN 103337886B CN 201310249902 A CN201310249902 A CN 201310249902A CN 103337886 B CN103337886 B CN 103337886B
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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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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
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Abstract
The present invention relates to a kind of industrial park wind-light storage micro-grid system, its technical characteristics is: comprise wind-solar generation device, electricity generation system detection and control terminal, energy-storage units, inverter and far-end controlling center, the input of wind-solar generation device is connected with wind energy plant and solar energy equipment, wind-solar generation device and electricity generation system measure and control device, energy-storage units is connected with inverter, the output of wind-solar generation device output and inverter is linked in electrical network or is connected to load for its power supply, electricity generation system detection and control terminal is connected with inverter, electricity generation system measure and control device is connected with far-end controlling center.The present invention is effectively by wind power generation, photovoltaic generation, energy storage, from function i ntegration such as net inversion, grid-connected feeds together, realize multifunctional electric energy mapping function; There are energy-conserving and environment-protective, cost is low, efficiency is high and the features such as stable performance.
Description
Technical field
The invention belongs to micro-capacitance sensor technical field, especially a kind of industrial park wind-light storage micro-grid system.
Background technology
Since entering 21 century, the resources and environment problems of China becomes increasingly conspicuous.For realizing the sustainable development of socio-economy, must implement energy-saving and emission-reduction strategy, development clean energy resource is the key link of energy-saving and emission-reduction strategy.Along with comprehensive startup of State Grid Corporation of China's intelligent grid strategy, build distributed energy, energy storage and like a raging fire the carrying out of microgrid, the building up and putting into operation of various distributed energy, need urgently to research and solve all kinds of distributed energy, the jointly controlling and scheduling problem of energy storage and microgrid, realize economical operation and the scheduling of electrical network.Huge for market potential, the industrial park wind-light storage microgrid towards industrial cousumer progressively forms foundation, to meet the demand that industrial cousumer powers to energy-saving and emission-reduction and high-quality.Such as, North China Electric Power University provides the imagination of distributed power generation in industrial park, and propose total tune control method, and by being product, byproduct, the refuse in garden endogenous substance electricity generation system between unit, and the exchange of energy and water, realize the imagination of electric power ecological Industrial Area; Beijing Electric Power Science Inst it is also proposed the grid-connected development countermeasure of industrial cousumer's distributed power source, but research, mainly for the cogeneration cooling heating system to improve energy consumption efficiency, there is not yet the report about wind-light storage microgrid at present.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of reasonable in design, cost is low, efficiency is high industrial park wind-light storage micro-grid system is provided.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of industrial park wind-light storage micro-grid system, comprise wind-solar generation device, electricity generation system detection and control terminal, energy-storage units, inverter and far-end controlling center, the input of wind-solar generation device is connected with wind energy plant and solar energy equipment, wind-solar generation device and electricity generation system measure and control device, energy-storage units is connected with inverter, the output of wind-solar generation device output and inverter is linked in electrical network or is connected to load for its power supply, electricity generation system detection and control terminal is connected with inverter, electricity generation system measure and control device is connected with far-end controlling center.
And described wind-solar generation device is connected with electricity generation system measure and control device by RS232 interface; Described electricity generation system detection and control terminal is connected with inverter by RS232 interface, and described electricity generation system measure and control device is connected with far-end controlling center by RS485 interface.
And described wind energy plant is connected with wind-solar generation device respectively by circuit breaker with solar energy equipment, described inverter is connected with electrical network or load by circuit breaker, and described energy-storage units is connected with inverter by fuse.
And what described electricity generation system detection and control terminal adopted is single-phase wind-light storage electricity generation system detection and control terminal.
And described inverter adopts full-automatic Industrial Frequency Transformer isolated form, pure sine wave to export, the two-way inverter of grid type of charging one.
And described energy-storage units adopts lithium ion battery.
Advantage of the present invention and good effect are:
The present invention is effectively by wind power generation, photovoltaic generation, energy storage, from function i ntegration such as net inversion, grid-connected feeds together, realize multifunctional electric energy mapping function; Meanwhile, electricity generation system detection and control terminal is connected with far-end controlling center, and monitoring microgrid is dynamic in real time, and realize the functions such as remote measurement, remote signalling, remote control, and all record data that can obtain side control terminal are gone forward side by side, line parameter is adjusted.There are energy-conserving and environment-protective, cost is low, efficiency is high and the features such as stable performance.
Accompanying drawing explanation
Fig. 1 is system connection diagram of the present invention;
Fig. 2 is practical application schematic diagram of the present invention;
Fig. 3 is workflow schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
A kind of industrial park wind-light storage micro-grid system, as shown in Figure 1, comprise wind-solar generation device, electricity generation system detection and control terminal, energy-storage units, inverter and far-end controlling center, the input of wind-solar generation device is connected with wind energy plant and solar energy equipment, wind-solar generation device is by RS232 interface and electricity generation system measure and control device, energy-storage units is connected with inverter, the output of wind-solar generation device output and inverter is linked in electrical network or is connected to load for its power supply, electricity generation system detection and control terminal is connected with inverter by RS232 interface, electricity generation system measure and control device is connected with far-end controlling center by RS485 interface.In the present embodiment, what electricity generation system detection and control terminal adopted is single-phase wind-light storage electricity generation system detection and control terminal.Below the various piece in system is described respectively:
Far-end controlling center is connected for monitoring whole system running status in real time with electricity generation system detection and control terminal, and to setting the parameter of wind-light storage micro-grid system and revise, can control the wind-solar generation device in system and load simultaneously.
Single-phase wind-light storage electricity generation system detection and control terminal to be connected with wind-solar generation device by RS232 interface can detect the electrical quantity certificate of wind-driven generator, photovoltaic panel, storage battery.Single-phase wind-light storage electricity generation system detection and control terminal can detect and record the various electric datas of inverter, MPPT, blower fan, and is transferred to Surveillance center.Possessing 8 way switch amount input interfaces for measuring external switch state simultaneously, there are No. 6 relay output interfaces for connecting warning device or control switch, there is the analog input function of 2 road alternating voltages and 2 road alternating currents.If need to carry out program maintenance and upgrading to detection and control terminal, can directly be downloaded, without the need to on-site maintenance by the program of far-end controlling center to detection and control terminal.
Wind-solar generation device carries out work under controlling at electricity generation system detection and control terminal, and it adopts PWM mode to control blower fan and solar cell carries out current limiting pressure-limiting charging safely and efficiently to storage battery, ensures that battery tension is stablized.Wind-solar generation device is configured with Liquid Crystal Module for showing battery tension, blower voltage, photocell voltage, power of fan, photocell power, blower fan electric current, photocell electric current, accumulator electric-quantity state.There is perfect defencive function simultaneously, comprise that solar cell is anti-recoil, anti-reverse, overcharge of a battery, anti-reverse, lightning protection, blower fan current limliting, blower fan automatic hand brake and manual parking brake function, there is the grid-connected function of automatic synchronization simultaneously.This wind-solar generation device can carry out work under electricity generation system detection and control terminal controls.
Inverter adopts full-automatic Industrial Frequency Transformer isolated form, pure sine wave to export, the two-way inverter of grid type of charging one, 48V DC bus power conversion can be become the alternating current with electrical network same frequency, and by electric energy feed-in electrical network or powering load, also can convert the alternating current of electrical network to direct current and charge a battery.Can realize grid-connected or from network operation switching undisturbed.
Energy-storage units adopts lithium ion battery, and lithium-ion battery monomer output voltage is high, operating temperature range is wide, energy is high, efficiency is low and self-discharge rate is low.
Fig. 2 gives real application systems connection layout of the present invention, and Fig. 3 gives the process chart of real application systems, and in the drawings, solid line represents loop of power circuit, and dotted line represents signal circuit.The connection of this application system is: wind energy plant and solar energy equipment are connected to the input of wind-solar generation device respectively by circuit breaker three, circuit breaker four, electrical network is connected with inverter by circuit breaker one, energy-storage units is connected with inverter by fuse, the output of inverter is connected with spatial load forecasting performance element by circuit breaker two with the output of wind-solar generation device, and this load performance element connects load.Single-phase wind-light storage detection and control terminal is the core component of native system, and it is by communicating with one another the permission access power reference value and inverter mode of operation that determine blower fan now and solar energy with wind-solar generation device and inverter.
1, when the charged capacity of energy-storage units is less than 80%, the electricity that wind-powered electricity generation, photovoltaic export, all for the charging of energy-storage units, when system connects electrical network, is powered to the load by electrical network, when system does not connect electrical network, stops powering to the load.
2, when the charged capacity of energy-storage units is greater than 80%, then give an order by wind-powered electricity generation, photovoltaic export electricity and energy storage inverter export simultaneously, powering load.When electricity has exceeded the capacity of load, under the condition of operation of power networks access, then by dump energy feed-in major network.
3, when inverter detects that line voltage proceeds to and is incorporated into the power networks after qualified, inverter Real-Time Monitoring in grid-connected process also follows the tracks of the voltage waveform of major network, to accomplish seamless switching, do not produce impact electric current and harmonic wave, before synchronous, wind light generation net-connected controller is simultaneously synchronous under detection and control terminal controls.
4, when the charged capacity of energy-storage units is less than 60%, the electricity that wind-powered electricity generation, photovoltaic export be when cannot meet the energy storage electricity required for energy storage device, be then energy storage device charging by two-way inverter from major network.
5, after line voltage loses or exceed normal range (NR), energy storage inverter breaking inner and electrical network connecting valve, proceed to islet operation, and wind light generation parallel network reverse device proceeds to island operation state simultaneously.
6, when the charged capacity of energy-storage units is greater than 90% and does not connect electrical network, wind-powered electricity generation, photovoltaic are implemented to subtract power by power load demand and are controlled, and when zero load, wind light generation controller proceeds to wind-powered electricity generation brake, and photovoltaic is shut down and controlled, until load or power system restoration.
This industrial park wind-light storage micro-grid system has following functions:
1, the three-phase voltage of measuring transformer low-pressure side, three-phase current, active power, reactive power, power factor, frequency, active electrical degree and idle electric degree.Event recording function record SOE function and switch changed position record.Time recording function comprises time recording AC-input voltage, ac output voltage, ac input power, output AC power, DC bus-bar voltage, photovoltaic generation power, wind power generation power etc., altogether records 30 days.All records are stored in (band power down keeps) in the data storage of single-phase wind-light storage electricity generation system detection and control terminal, and far-end controlling center can read the data in single-phase wind-light storage electricity generation system detection and control terminal at any time.
2, grid-connected feeding function.In the normal situation of line voltage frequency, inverter is set to grid-connected feeding mode, the wind light generation of now AC input is after storage battery charge state reaches setting capacity, and exchange and export priority of supply load, complementary energy is fed to electrical network.When line voltage frequency occurs abnormal by automatically disconnecting the connection with electrical network, powered by microgrid completely, until line voltage recovers normal.Main electrical network powering load is automatically switched to when load exceedes the capacity that microgrid can provide.Open grid-connected feeding function maximizing and utilize wind energy, solar power generation resource, eliminate the off-load caused when load is light because storage battery is full, also maximizedly can utilize natural energy resources.
3, grid-connectedly Grid Movement Function is not gone up, because some areas electrical network does not allow grid-connected feed, native system devises grid-connected operational mode of not surfing the Net for this reason, system is networking operation all the time, when the gross power that generates electricity is less than bearing power, wind light generation and electrical network are load supplying jointly or are charge in batteries, when the gross power that generates electricity is greater than bearing power, energy storage and off-load is relied on to absorb complementary energy, and not to electrical network feed.
4, the storage battery that battery management system is equipped with can be charged by grid side or wind light generation, and charging modes is flexible.Implement the meticulous charging control model of 6 segmentation in charging, comprise constant current, constant voltage, floating charge, reduce floating charge, equalizing charge and cycle absorb charging, keep capacity equilibrium between battery, reduce inside battery crystallization, prevent the excessive dehydration of battery.Battery management has temperature compensation function simultaneously, can monitor storage battery charge state.
5, perfect defencive function, native system restarts protection with the overvoltage of storage battery, under-voltage protection, overcurrent protection, time delay, exchanges the overvoltage of input, under-voltage, overfrequency, under-frequency, island protect, exchanges the overload, overheated exported.There is battery overvoltage, under-voltage, the overheated audible alarm that transships protection simultaneously.
6, powerful communication function, single-phase family wind-light storage detection and control terminal is with RS-232C and RS-485 communication interface.Be connected with microcomputer by RS-232C/RS-485 communication interface, in real time monitoring microgrid is dynamic, also can form an electric power monitoring system larger, with better function by repeater networking mode.In addition, also can, by means of passages such as telephone wire, radio, carrier wave, microwave and optical fiber, realize communicating more at a distance.Realize the three distant functions such as remote measurement, remote signalling, remote control.Utilize communication function can also obtain all record data line parameter of going forward side by side to adjust.
It is emphasized that; embodiment of the present invention is illustrative; instead of it is determinate; therefore the present invention includes the embodiment be not limited to described in embodiment; every other execution modes drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of protection of the invention equally.
Claims (2)
1. an industrial park wind-light storage micro-grid system, it is characterized in that: comprise wind-solar generation device, electricity generation system detection and control terminal, energy-storage units, inverter and far-end controlling center, the input of wind-solar generation device is connected with wind energy plant and solar energy equipment, wind-solar generation device and electricity generation system measure and control device, energy-storage units is connected with inverter, the output of wind-solar generation device output and inverter is linked in electrical network or is connected to load for its power supply, electricity generation system detection and control terminal is connected with inverter, electricity generation system measure and control device is connected with far-end controlling center,
Described wind-solar generation device is connected with electricity generation system measure and control device by RS232 interface; Described electricity generation system detection and control terminal is connected with inverter by RS232 interface, and described electricity generation system measure and control device is connected with far-end controlling center by RS485 interface;
Described wind energy plant is connected with wind-solar generation device respectively by circuit breaker with solar energy equipment, and described inverter is connected with electrical network or load by circuit breaker, and described energy-storage units is connected with inverter by fuse;
What described electricity generation system detection and control terminal adopted is single-phase wind-light storage electricity generation system detection and control terminal;
Described inverter adopts full-automatic Industrial Frequency Transformer isolated form, pure sine wave to export, the two-way inverter of grid type of charging one.
2. industrial park according to claim 1 wind-light storage micro-grid system, is characterized in that: described energy-storage units adopts lithium ion battery.
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| CN104734146B (en) * | 2013-12-24 | 2019-07-26 | 比亚迪股份有限公司 | Power supply dispatching method and system based on distributed energy storage |
| CN103904684A (en) * | 2014-03-28 | 2014-07-02 | 国网节能服务有限公司 | Micro-grid control system and a new energy recycling system |
| CN104124702A (en) * | 2014-06-25 | 2014-10-29 | 许继电气股份有限公司 | Lithium photovoltaic energy-storing grid-connected power supply system |
| CN104113128A (en) * | 2014-07-30 | 2014-10-22 | 深圳市赛宝伦计算机技术有限公司 | Micro-intelligent power distribution control system and method for solar and wind power |
| CN113078798A (en) * | 2021-05-20 | 2021-07-06 | 金华市华强电子科技股份有限公司 | Multipurpose power generation control system based on outdoor movement and control method thereof |
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| CN103138290A (en) * | 2013-02-19 | 2013-06-05 | 广西电网公司 | Microgrid seamless switching control method based on improving phase control under peer mode |
| CN203218879U (en) * | 2013-04-24 | 2013-09-25 | 河海大学 | Wind-solar complementary off-grid control system |
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| CN103138290A (en) * | 2013-02-19 | 2013-06-05 | 广西电网公司 | Microgrid seamless switching control method based on improving phase control under peer mode |
| CN203218879U (en) * | 2013-04-24 | 2013-09-25 | 河海大学 | Wind-solar complementary off-grid control system |
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