CN204858589U - Photovoltaic microgrid power generation system's automatic switching control mechanism - Google Patents

Photovoltaic microgrid power generation system's automatic switching control mechanism Download PDF

Info

Publication number
CN204858589U
CN204858589U CN201520571884.6U CN201520571884U CN204858589U CN 204858589 U CN204858589 U CN 204858589U CN 201520571884 U CN201520571884 U CN 201520571884U CN 204858589 U CN204858589 U CN 204858589U
Authority
CN
China
Prior art keywords
power generation
generation system
module
automatic switching
acquisition module
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.)
Expired - Fee Related
Application number
CN201520571884.6U
Other languages
Chinese (zh)
Inventor
张晓芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Chien Shiung Institute of Technology
Original Assignee
Suzhou Chien Shiung Institute of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Chien Shiung Institute of Technology filed Critical Suzhou Chien Shiung Institute of Technology
Priority to CN201520571884.6U priority Critical patent/CN204858589U/en
Application granted granted Critical
Publication of CN204858589U publication Critical patent/CN204858589U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The utility model discloses a photovoltaic microgrid power generation system's automatic switching control mechanism, including observing and controling unit, wireless communication network and backstage decision package, observe and control unit and backstage decision package and carry out data transfer through wireless communication network, it includes signal processor, radio network interface module, control output interface module, collection module and electric energy metering modules to observe and control the unit, radio network interface module, control output interface module, collection module and electric energy metering modules all with the signal processor electricity federation, control output interface module links to each other with the relay and accomplishes the switching, the backstage decision package includes the gateway server.

Description

The automatic switching controlling organization of photovoltaic micro-grid power generation system
Technical field
The utility model belongs to field of power, is specifically related to a kind of automatic switching controlling organization for photovoltaic micro-grid power generation system.
Background technology
Along with socioeconomic development, energy and environment become the major issue that the whole world faces, energy shortage, ecological deterioration highlights day by day, develop green energy resource and become the most effective way that countries in the world solve energy crisis and ecological deterioration, solar energy is with its aboundresources, cleanliness without any pollution becomes the good regenerative resource of exploitation prospect, parallel network power generation technology more and more receives accreditation and the concern of people as the major way of photovoltaic generation, and become the main flow of photovoltaic generation application gradually, distributed power source pollutes less owing to having, efficiency of energy utilization is high, infield many-sided advantage such as is flexibly able to fast development, but a large amount of distributed power source access electrical network also creates some harmful effects, what need solution so grid-connected is inversion, grid-connected.The problems such as harmonic controling, at present, conventional method is the operating characteristic according to photovoltaic cell, maximal power tracing is controlled to be applied in the charging circuit of controller, realizes the output of photovoltaic cell maximal efficiency, first carry out high frequency boosting, digital signal processor is grid-connected after producing SPWM pulsed drive inverter circuit, controller achieves the utilization of photovoltaic cell maximal efficiency, and reduces the percent harmonic distortion of Converting Unit to greatest extent, but there is following problem:
1, DSP chip disposal ability is limited, complete voltage, current monitoring, inversion driving, harmonic controling simultaneously, thoroughly to cut etc. and accurately control, technical requirement content is high, and reliability is low, needs the chip of research higher height rationality energy or increases input on a large scale.
2, with traditional energies such as thermoelectricity, water power, nuclear powers for backbone, with the grid-connected power generation system of balance mode access, photovoltaic micro-grid power generation system is as the useful supplement of power distribution network, its switching needs to carry out macro-control on the whole, according to load level and photovoltaic microgrid generating capacity, select photovoltaic microgrid system the most suitable to drop into electrical network, accomplish the reasonable distribution of resource, cost-saving, this part content is still blank at present.
3, need to accomplish macro adjustments and controls, must each photovoltaic microgrid system monitor, and data are delivered to backstage and make after expert system decision-making and optimum to judge, how to solve the information transmission system because of its inefficiency, slow in reacting, transmission information is single, and the exploitation of background intelligent decision system is also solve the effectively grid-connected key issue of photovoltaic system.
Utility model content
Utility model object: for above-mentioned prior art Problems existing and deficiency, the purpose of this utility model is to provide a kind of automatic switching controlling organization of photovoltaic micro-grid power generation system.
Technical scheme: the automatic switching controlling organization that the utility model discloses photovoltaic micro-grid power generation system, comprises measurement and control unit, cordless communication network and backstage decision package, and measurement and control unit and backstage decision package carry out data transmission by cordless communication network;
Measurement and control unit comprises signal processor, wireless network interface modules, control output interface module, acquisition module and electric energy metering module, described wireless network interface modules, control output interface module, acquisition module and electric energy metering module all with signal processor Electricity Federation, described control output interface module has been connected with relay switching; Backstage decision package comprises gateway server.
As further optimization of the present utility model, acquisition module described in the utility model comprises the environmental data collecting transducer for gathering photovoltaic micro-grid power generation system environmental parameter.
As further optimization of the present utility model, environmental data collecting transducer described in the utility model comprises the light-intensity test transducer, the Temperature Humidity Sensor for testing environment situation and the gravity acceleration sensor for calculation matrix inclination angle that detect solar radiation quantity.
As further optimization of the present utility model, measurement and control unit described in the utility model also comprises voltage acquisition module and current acquisition module, and described voltage acquisition module is all connected with electric energy metering module with current acquisition module.
As further optimization of the present utility model, measurement and control unit described in the utility model also comprises key-press module.
Beneficial effect: the utility model compared with prior art, has the following advantages:
1, the utility model realizes the control of macroscopical switching on the whole, according to load level and photovoltaic microgrid generating capacity, selects photovoltaic microgrid system the most suitable to drop into electrical network, accomplishes the reasonable distribution of resource, cost-saving;
2, the utility model can realize on-site supervision and automatic switching, reduces the number of stoppages, reduces accident scope, shorten time of casualty, for restoring electricity, rapid analysis, diagnosis, report accident cause provide effective foundation, reduces a large amount of labour cost, improve power supply quality;
3, the utility model has responded the construction of country about the renewable new forms of energy connecting system of intelligent grid, is the guarantee that it provides reliability, has stronger competitiveness.
Figure of description
Fig. 1 is frame diagram of the present utility model;
Fig. 2 is workflow diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in detail; but illustrate that protection range of the present utility model is not limited to the concrete scope of the present embodiment simultaneously; based on the embodiment in the utility model; those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
It should be noted that, in description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
Embodiment
As shown in Figure 1, the automatic switching controlling organization of the photovoltaic micro-grid power generation system of the present embodiment, comprises measurement and control unit, cordless communication network and backstage decision package, and measurement and control unit and backstage decision package carry out data transmission by cordless communication network.
Measurement and control unit comprises signal processor, wireless network interface modules, control output interface module, acquisition module, electric energy metering module, display module, key-press module, clock circuit and data storage, wireless network interface modules, control output interface module, acquisition module, electric energy metering module, display module, key-press module, clock circuit and data storage all with signal processor Electricity Federation, control output interface module has been connected with relay the switching of photovoltaic micro-grid power generation system.
Acquisition module comprises the environmental data collecting transducer for gathering photovoltaic micro-grid power generation system environmental parameter, this environmental data collecting transducer comprises the light-intensity test transducer, the Temperature Humidity Sensor for testing environment situation and the gravity acceleration sensor for calculation matrix inclination angle that detect solar radiation quantity, and signal processor can calculate photovoltaic micro-grid power generation system energy output according to these data volumes.
Electric energy metering module is connected with current acquisition module with voltage acquisition module, be measurable voltage and current by large for big current photovoltaic conversion, collect grid-connected voltage and current, according to the grid-connected voltage and current collected, carry out electric energy quality monitoring, analyze harmonic wave, voltage level of power grid, tri-phase unbalance factor etc., make photovoltaic micro-grid power generation system exit distribution fast time undesirable in fault, the quality of power supply.
The display module of measurement and control unit includes LCD, can carry out real-time tracking display, complete SOE logout etc., facilitate user to monitor in real time data network wave.
The conversion that the key-press module of the present embodiment has been used for monitor state, optimum configurations and fixed value modification, complete local fling-cut switch point, close a floodgate and divide-shut brake lock operation.
The wireless network interface modules of the present embodiment can facilitate the 4G network of access communications operator, electric network information data is sent to main website or main website instruction is issued to target measurement and control unit.
The backstage decision package of the present embodiment comprises gateway server, this gateway server is connected with signal processor by cordless communication network, accept and analyze the real time data that measurement and control unit collects, require that photovoltaic micro-grid power generation system energy output that the demand history data that obtain on long-time running experiential basis and signal processor draw carries out calculating and compares according to local power grid situation and user, draw the quantity of the photovoltaic micro-grid power generation system of access, guarantee the optimum switching in the scene of photovoltaic micro-grid power generation system.
The backstage decision package of the present embodiment mainly adopts artificial neural net or System program, provide Generalization bounds to carry into execution a plan, carry out the complementary supervision of artificial experience and decision-making, be used for making up automatic switching failure, simultaneously can also by WEB by Information issued on the net, user can the operation conditions of strange land to photovoltaic microgrid system manage, safeguard, browse, the operation such as analysis.
With reference to figure 2, the course of work of the present embodiment is: the data of signal processor environmentally data sampling sensor draw the energy output of photovoltaic array and photovoltaic micro-grid power generation system, these energy output data are sent to gateway server by signal processor, gateway server is according to the demand history data of same or similar time period, make the decision-making of access photovoltaic array quantity, this decision-making is sent to control output interface module by signal processor, the switching of photovoltaic micro-grid power generation system is completed by relay, electric energy metering module carries out real-time electric energy quality monitoring to grid-connected voltage and current, analyze harmonic wave, voltage level of power grid, tri-phase unbalance factor etc., in fault, photovoltaic micro-grid power generation system is made to exit distribution fast when the quality of power supply is undesirable.
During grid-connected work, line voltage normal range (NR) is the 80%-110% of normal voltage, when line voltage exceeds normal range (NR), switching device detects abnormal at once and departs from electrical network at the appointed time or make corresponding, is below the switching index of automatic switching control device:
The table 1 grid-connected system electric voltage exception corresponding time
Voltage range (normal voltage percentage %) Response time (Ms)
V<50％ 160
50％≤V<88％ 2000
110％<V<120％ 1000
V≥120％ 160
The grid-connected synchronous requirement of table 2
Capacity (KVA) Frequency (Δ F, HZ) Voltage difference (Δ V, %) Phase difference (Δ U; °)
0～500 0.3 10 20
>500～1500 0.2 5 15
>1500～10000 0.1 3 10
Table 3 voltage harmonic technical indicator
Odd harmonic H H<11 11≤H<17 17≤H<23 23≤H<35 35≤H Total harmonic wave (THD)
(％) 4.0 2.0 1.5 0.6 0.3 5.0
Table 4 grid-connected current harmonic wave index
Odd harmonic H H<11 11≤H<17 17≤H<23 23≤H<35 35≤H Total harmonic wave (THD)
(％) 4.0 2.0 1.5 0.6 0.3 5.0
Embodiment of the present utility model provides for the purpose of example and description, and is not exhaustively or by the utility model be limited to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and practical application are better described, and enables those of ordinary skill in the art understand the utility model thus design the various embodiments with various amendment being suitable for special-purpose.

Claims (5)

1. the automatic switching controlling organization of photovoltaic micro-grid power generation system, is characterized in that: comprise measurement and control unit, cordless communication network and backstage decision package, and described measurement and control unit and backstage decision package carry out data transmission by cordless communication network;
Described measurement and control unit comprises signal processor, wireless network interface modules, control output interface module, acquisition module and electric energy metering module, described wireless network interface modules, control output interface module, acquisition module and electric energy metering module all with signal processor Electricity Federation, described control output interface module has been connected with relay switching;
Described backstage decision package comprises gateway server.
2. the automatic switching controlling organization of photovoltaic micro-grid power generation system according to claim 1, is characterized in that: described acquisition module comprises the environmental data collecting transducer for gathering photovoltaic micro-grid power generation system environmental parameter.
3. the automatic switching controlling organization of photovoltaic micro-grid power generation system according to claim 2, is characterized in that: described environmental data collecting transducer comprises the light-intensity test transducer, the Temperature Humidity Sensor for testing environment situation and the gravity acceleration sensor for calculation matrix inclination angle that detect solar radiation quantity.
4. the automatic switching controlling organization of photovoltaic micro-grid power generation system according to claim 1, it is characterized in that: described measurement and control unit also comprises voltage acquisition module and current acquisition module, and described voltage acquisition module is all connected with electric energy metering module with current acquisition module.
5. the automatic switching controlling organization of photovoltaic micro-grid power generation system according to claim 1, is characterized in that: described measurement and control unit also comprises key-press module.
CN201520571884.6U 2015-08-03 2015-08-03 Photovoltaic microgrid power generation system's automatic switching control mechanism Expired - Fee Related CN204858589U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520571884.6U CN204858589U (en) 2015-08-03 2015-08-03 Photovoltaic microgrid power generation system's automatic switching control mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520571884.6U CN204858589U (en) 2015-08-03 2015-08-03 Photovoltaic microgrid power generation system's automatic switching control mechanism

Publications (1)

Publication Number Publication Date
CN204858589U true CN204858589U (en) 2015-12-09

Family

ID=54749108

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520571884.6U Expired - Fee Related CN204858589U (en) 2015-08-03 2015-08-03 Photovoltaic microgrid power generation system's automatic switching control mechanism

Country Status (1)

Country Link
CN (1) CN204858589U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109525596A (en) * 2018-12-25 2019-03-26 汉能移动能源控股集团有限公司 Communication method and gateway of microgrid system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109525596A (en) * 2018-12-25 2019-03-26 汉能移动能源控股集团有限公司 Communication method and gateway of microgrid system

Similar Documents

Publication Publication Date Title
CN102570508B (en) Systems for controlling a power conversion system
CN104682435B (en) The operation of a kind of micro-capacitance sensor with the energy-storage system that can stabilize power swing and monitoring method
CN106054672A (en) Real micro-grid operation dynamic simulation test platform based on RT-LAB
Guo et al. Application research on large-scale battery energy storage system under Global Energy Interconnection framework
CN102893264B (en) Power points is followed the tracks of
CN104734190B (en) A kind of monitoring method of the micro-grid system being automatically obtained FREQUENCY CONTROL
CN103236718A (en) Source-network-load automatic control system and method for intelligent microgrid
CN104701882A (en) Monitoring method of micro-grid system capable of automatically realizing energy balance
CN102142693A (en) Solar photovoltaic grid-connected inversion control system based on field programmable gate array (FPGA)
CN104734194B (en) Wind, photovoltaic and storage-integrated micro-grid capable of being operated in a grid-connected manner
CN104682436B (en) Energy storage system micro-grid capable of inhibiting power fluctuation
CN202633961U (en) Monitoring system for battery energy storing station
CN201837674U (en) Grid-connected photovoltaic power generation monitoring and analysis system
CN105048507A (en) Automatic switching control device for photovoltaic micro-grid power generation system
CN104682448A (en) Operation and monitoring method for battery energy storage power station based on power prediction
CN104617876A (en) Outdoor test platform of solar photovoltaic modules and electricity generation performance online analysis method thereof
CN104682410A (en) Micro-grid system capable of automatically realizing energy balance
CN104682409A (en) Monitoring device for micro-grid system capable of automatically realizing energy balance
CN202906492U (en) Solar cell panel generating monitoring system based on DC carrier wave technology
CN104682440A (en) Grid-connected operation photovoltaic power generation system
CN104753084A (en) Micro-grid system capable of controlling frequency automatically
CN104682439A (en) Operation and monitoring method for grid-connected operation photovoltaic power generation system
CN104682438A (en) Monitoring device for grid-connected operation photovoltaic power generation system
CN102437593A (en) Small-scale wind/light supplementation type independent power supply system
CN204858589U (en) Photovoltaic microgrid power generation system&#39;s automatic switching control mechanism

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151209

Termination date: 20160803

CF01 Termination of patent right due to non-payment of annual fee