CN111953020A - User-side intelligent micro-grid design method - Google Patents
User-side intelligent micro-grid design method Download PDFInfo
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- CN111953020A CN111953020A CN202010851916.3A CN202010851916A CN111953020A CN 111953020 A CN111953020 A CN 111953020A CN 202010851916 A CN202010851916 A CN 202010851916A CN 111953020 A CN111953020 A CN 111953020A
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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
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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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
- H02J3/28—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
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
- Y04S10/14—Energy storage units
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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
- 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
- Y04S10/40—Display of information, e.g. of data or controls
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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
- 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
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- Computer Networks & Wireless Communication (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to the technical field of power grid detection, in particular to a design method of a user-side intelligent micro-grid. Remote signaling quantity displacement active uploading; event information such as battery overvoltage, undervoltage and inverter overload, and the like, of each unit, such as alarm or fault, and the like, is actively uploaded and recorded, analysis by operators is facilitated, the operation condition of the microgrid is monitored in real time according to telemetering and remote signaling data, start and stop of each unit and setting of corresponding parameters can be remotely controlled, pictures and curves are displayed on a terminal, data acquisition is carried out through an intelligent measurement and control terminal of the microgrid, the data are transmitted to a front-end processor of a remote control center through a GPRS (general packet radio service) wireless network, the front-end processor carries out data processing and stores the data in a database, and a supply layer carries out data calling.
Description
Technical Field
The invention relates to the technical field of power grid detection, in particular to a design method of a user-side intelligent micro-grid.
Background
The micro-grid system is a dispersed power supply network with strong independence, and is formed by combining energy storage device groups such as photovoltaic power generation, wind power generation, gas power generation or diesel power generation, fuel cells, storage batteries and the like according to needs and adding devices such as control, protection, metering and the like. The micro-grid technology aims at realizing flexible and efficient application of the distributed power generation technology on the medium-voltage and low-voltage power distribution network level, solves the problem of grid-connected operation of distributed power supplies with large quantity and various forms, maintains local optimization and balance of power through intelligent energy management, effectively reduces the difficulty of system operation scheduling, can continuously supply power to a key load when an external power grid fails when the micro-grid independently operates, and improves the reliability of power utilization. The micro-grid technology is one of the key technologies for realizing the wide application of the distributed power generation system. With the vigorous promotion of new rural construction in China, the existing power supply capacity is far from meeting the rapid increase of rural power load, and the rural power supply becomes one of the factors restricting the current rural economic development and improving the living standard of residents. In order to solve the power supply problem in rural areas, China has developed many rounds of rural power grid upgrading and reconstruction projects, but still has many problems in the aspects of economy, technology and the like, especially point loads such as remote areas, frontier islands and the like. When upgrading and transforming the rural power grid, a new solution is required to be sought.
Disclosure of Invention
The invention aims to provide a user-side intelligent microgrid design method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides a design method of a user-side intelligent microgrid, which comprises a bidirectional inverter, a distributed power generation unit, an energy storage battery, a load and an intelligent measurement and control terminal for remote monitoring, wherein the distributed power generation unit comprises wind power generation, photovoltaic power generation and hydroelectric power generation, the distributed power generation unit and the energy storage battery are connected in parallel on an alternating current bus, the conversion and interaction of alternating current or direct current side energy are completed through a single bidirectional inverter, when the direct current side energy is sufficient, the direct current side energy is inverted to an alternating current side supply load or is merged into the power grid, and the energy in an alternating current side power distribution network is rectified and stored in the storage battery to serve as a standby power supply of the load.
Preferably, the capacity of the bidirectional inverter is a core device of a user microgrid, the maximum load requirement is selected according to the capacity, and the following formula is satisfied:
Sinv＝a×PL_max；
in the formula SinvIs the capacity of a bidirectional inverter and has the unit of kW, PL_maxTo load maximum powerThe unit is kW, a is the capacity-to-average coefficient, and the value of a is 1.2-1.5.
Preferably, in the island operation mode, the internal power of the microgrid satisfies the following formula:
in the formula Sigma PDGThe unit is kW; pBATThe unit is kW for the power of the energy storage battery; pLIs the AC load power, and the unit is kW; when the total power of the distributed power supply is less than the load power, namely the distributed power supply is not enough to supply the load, the shortage of the load power is borne by the discharge of the energy storage battery; when the total power of the distributed power supply is larger than the load power, the redundant power is charged and absorbed by the energy storage battery.
Preferably, the intelligent measurement and control terminal is connected with the data processing terminal through a GPRS (general packet radio service), and the data processing terminal is provided with a real-time monitoring module, a parameter setting module, a history information module, a data display module, an alarm display module and a system information module.
Preferably, the data processing terminal is further provided with a front-end processor and a database.
As preferred, intelligent measurement and control terminal includes operating device and the mainframe box that is used for placing the host computer, the mainframe box sets up in operating device's back, last display screen and the speaker of being provided with of operating device, the operation panel is installed to operating device's display screen below, inlay on the operation panel and establish and install keyboard and mouse.
Preferably, a notification display screen for providing an important notification is provided on the top of the display screen.
Preferably, a cold-rolled steel base is installed at the bottom of the operating device, and a damping base is installed on the connecting side of the operating device and the cold-rolled steel base.
As preferred, be provided with the burglary-resisting door on the mainframe box, the wiring mouth that a plurality of even equidistance were arranged and were linked together with inside host computer is seted up at the back of mainframe box, and there is the protective cover one side of every wiring mouth through hinged joint, the below of wiring mouth is provided with the wiring shift knob who is used for the control to correspond the wiring mouth break-make.
Preferably, a seat is installed at the top of one side, close to the operating panel, of the cold-rolled steel base, a lifting base is arranged at the bottom of the seat, a fixed seat is installed at the bottom of the lifting base, and a lifting operating handle used for controlling lifting is arranged at one side of the lifting base.
Compared with the prior art, the invention has the beneficial effects that:
1. in the design method of the user-side intelligent microgrid, the intelligent measurement and control terminal has the functions of data acquisition, processing and storage, and comprises real-time remote measurement, remote signaling and historical data of each unit. Remote signaling quantity displacement active uploading; event information such as battery overvoltage, battery undervoltage, inverter overload and the like of each unit alarm or fault is actively uploaded and recorded, analysis by operators is facilitated, operation conditions of the microgrid are monitored in real time according to telemetering and telecommand data, starting and stopping of each unit and setting of corresponding parameters can be remotely controlled, pictures and curves are displayed on a terminal, and the user-side intelligent microgrid design method system of the embodiment collects data through the intelligent measurement and control terminal of the microgrid and transmits the data to a front-end processor of a remote control center through a GPRS (general packet radio service) wireless network. The front-end processor processes data and stores the data in a database, the data is called by a supply layer, and the electricity consumption of each unit can be counted, such as the daily electricity generation amount statistics of distributed power supplies such as photovoltaic power supplies and fans, the daily electricity consumption statistics of loads, and the like, so that operators can perform relevant theoretical analysis.
2. In this user side intelligence microgrid design method, display screen through setting up, mainframe box and operation panel can assist the staff to carry out the inquiry of data and set up the parameter of equipment, distributed generator daily generated energy statistics simultaneously, the daily electric quantity statistics of load all can be with on data or image display's the display screen, it is more directly perceived, a plurality of equipment can be connected simultaneously to a plurality of wiring mouths that set up on the mainframe box, and install the protective cover on every wiring mouth, protect the wiring mouth after using, prevent that debris from blockking up, seat through setting up provides staff's comfort, the lift base can be adjusted according to different people's demand, and convenient for operation.
Drawings
FIG. 1 is a schematic diagram of a consumer microgrid architecture according to the present invention;
FIG. 2 is a schematic diagram of the framework for intelligent control of the user microgrid according to the present invention;
FIG. 3 is a schematic structural diagram of an intelligent measurement and control terminal according to the present invention;
fig. 4 is a schematic back structure of the main cabinet of the present invention.
The various reference numbers in the figures mean:
100. operating the equipment; 101. a display screen; 102. a notification display screen; 103. a speaker; 104. a vent hole; 105. a damping mount; 200. a main chassis; 201. a security door; 202. a wiring port; 203. a protective cover; 204. a wiring switch button; 300. an operation panel; 301. a mouse; 302. a keyboard; 400. cold rolling a steel base; 401. a seat; 402. a lifting base; 403. a fixed seat; 404. the operation handle is lifted.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Example 1
A design method of a user-side intelligent micro-grid is shown in figures 1 and 2 and comprises a bidirectional inverter, a distributed power generation unit, an energy storage battery, a load and an intelligent measurement and control terminal for remote monitoring, wherein the distributed power generation unit comprises wind power generation, photovoltaic power generation and hydroelectric power generation, the distributed power generation unit and the energy storage battery are connected in parallel on an alternating current bus, conversion and interaction of alternating current or direct current side energy are completed through a single bidirectional inverter, the direct current side energy is inverted to the alternating current side to supply the load or is merged into the power grid when the direct current side energy is sufficient, and the energy in a power distribution network at the alternating current side is rectified and stored in the storage battery to serve as a standby power supply of the.
Furthermore, the capacity of the bidirectional inverter is a core device of a user microgrid, the maximum load requirement is selected according to the capacity, and the following formula is met:
Sinv＝a×PL_max；
in the formula SinvIs the capacity of a bidirectional inverter and has the unit of kW, PL_maxThe unit is kW for the maximum load power, a is the capacity-to-average coefficient, and the value of a is 1.2-1.5.
It is worth mentioning that in the islanding operation mode, the internal power of the microgrid satisfies the following formula:
in the formula Sigma PDGThe unit is kW; pBATThe unit is kW for the power of the energy storage battery; pLIs the AC load power, and the unit is kW; when the total power of the distributed power supply is less than the load power, namely the distributed power supply is not enough to supply the load, the shortage of the load power is borne by the discharge of the energy storage battery; when the total power of the distributed power supply is larger than the load power, the redundant power is charged and absorbed by the energy storage battery.
In addition, the intelligent measurement and control terminal is connected with the data processing terminal through a GPRS (general packet radio service), the data processing terminal is provided with a real-time monitoring module, a parameter setting module, a history information module, a data display module, an alarm display module and a system information module, and the data processing terminal is also provided with a front-end processor and a database.
In the design method of the user-side intelligent microgrid, the intelligent measurement and control terminal has the functions of data acquisition, processing and storage, and comprises real-time remote measurement, remote signaling and historical data of each unit. Remote signaling quantity displacement active uploading; event information such as battery overvoltage, battery undervoltage, inverter overload and the like of each unit alarm or fault is actively uploaded and recorded, analysis by operators is facilitated, operation conditions of the microgrid are monitored in real time according to telemetering and telecommand data, starting and stopping of each unit and setting of corresponding parameters can be remotely controlled, pictures and curves are displayed on a terminal, and the user-side intelligent microgrid design method system of the embodiment collects data through the intelligent measurement and control terminal of the microgrid and transmits the data to a front-end processor of a remote control center through a GPRS (general packet radio service) wireless network. The front-end processor processes data and stores the data in a database, the data is called by a supply layer, and the electricity consumption of each unit can be counted, such as the daily electricity generation amount statistics of distributed power supplies such as photovoltaic power supplies and fans, the daily electricity consumption statistics of loads, and the like, so that operators can perform relevant theoretical analysis.
Example 2
As a second embodiment of the present invention, as shown in fig. 3 and fig. 4, the intelligent measurement and control terminal includes an operation device 100 and a main cabinet 200 for placing a host, the main cabinet 200 is disposed at the back of the operation device 100, a display screen 101 and a speaker 103 are disposed on the operation device 100, an operation panel 300 is mounted below the display screen 101 of the operation device 100, and a keyboard 302 and a mouse 301 are embedded on the operation panel 300.
Specifically, a notification display screen 102 for providing important notification is disposed on the top of the display screen 101, and is used for displaying important information for the staff to observe.
It should be noted that the cold-rolled steel base 400 is installed at the bottom of the operation device 100, and the vibration damping base 105 is installed at the connection side of the operation device 100 and the cold-rolled steel base 400, so that the structural stability is improved, and the operation device 100 is prevented from shaking.
Further, a security door 201 is arranged on the main case 200, a plurality of wiring ports 202 which are uniformly arranged at equal intervals and communicated with the internal main machine are formed in the back of the main case 200, a protective cover 203 is connected to one side of each wiring port 202 through a hinge, and a wiring switch button 204 used for controlling the connection and disconnection of the corresponding wiring port 202 is arranged below the wiring port 202.
In addition, seat 401 is installed at one side top that cold rolling steel base 400 is close to operation panel 300, and seat 401's bottom is provided with lift base 402, and fixing base 403 is installed to lift base 402's bottom, and one side of lift base 402 is provided with the lift operation handle 404 that is used for controlling the lift, provides staff's comfort through the seat 401 that sets up, and lift base 402 can adjust convenient operation according to different people's demand.
According to the design method of the user-side intelligent microgrid, provided by the invention, through the arranged display screen 101, the main case 200 and the operation panel 300, a worker can be assisted to inquire data and set parameters of equipment, meanwhile, the daily generated energy statistics and the daily load power statistics of a distributed power supply can be displayed on the display screen 101 through data or images, the method is more intuitive, a plurality of wiring ports 202 arranged on the main case 200 can be simultaneously connected with a plurality of equipment, a protective cover 203 is arranged on each wiring port 202, the wiring ports 202 are protected after the method is used, sundries are prevented from being blocked, the comfortable feeling of the worker is provided through the arranged seat 401, the lifting base 402 can be adjusted according to the requirements of different people, and the operation is convenient.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A user side intelligent micro-grid design method is characterized by comprising the following steps: including two-way inverter, distributed generation unit, energy storage battery, load and be used for remote monitoring's intelligent measurement and control terminal, distributed generation unit includes wind power generation, photovoltaic power generation and hydroelectric power generation, and distributed generation unit and energy storage battery connect in parallel on the interchange bus, accomplish interchange or direct current side energy conversion and interaction through single two-way inverter, when direct current side energy is abundant with its contravariant to the interchange side supply load or merge the electric wire netting into, store the energy rectification in the electric wire netting of interchange side in the battery, as the stand-by power supply of load.
2. The design method of the user-side intelligent microgrid according to claim 1, characterized in that: the capacity of the bidirectional inverter is a core device of a user microgrid, the maximum load requirement is selected according to the capacity, and the following formula is met:
Sinv＝a×PL_max；
in the formula SinvIs the capacity of a bidirectional inverter and has the unit of kW, PL_maxThe unit is kW for the maximum load power, a is the capacity-to-average coefficient, and the value of a is 1.2-1.5.
3. The design method of the user-side intelligent microgrid according to claim 1, characterized in that: in an island operation mode, the internal power of the microgrid satisfies the following formula:
in the formula Sigma PDGThe unit is kW; pBATThe unit is kW for the power of the energy storage battery; pLIs the AC load power, and the unit is kW; when the total power of the distributed power supplies is less than the load power, namely the distributed power supplies are not enough to supply the load, the load is drivenThe power carrying shortage is borne by the discharge of the energy storage battery; when the total power of the distributed power supply is larger than the load power, the redundant power is charged and absorbed by the energy storage battery.
4. The design method of the user-side intelligent microgrid according to claim 1, characterized in that: the intelligent measurement and control terminal is connected with the data processing terminal through a GPRS (general packet radio service), and the data processing terminal is provided with a real-time monitoring module, a parameter setting module, a history information module, a data display module, an alarm display module and a system information module.
5. The design method of the user-side intelligent microgrid according to claim 4, characterized in that: the data processing terminal is also provided with a front-end processor and a database.
6. The design method of the user-side intelligent microgrid according to claim 1, characterized in that: the intelligent measurement and control terminal comprises an operating device (100) and a main case (200) for placing a host, the main case (200) is arranged on the back of the operating device (100), a display screen (101) and a loudspeaker (103) are arranged on the operating device (100), an operating panel (300) is installed below the display screen (101) of the operating device (100), and a keyboard (302) and a mouse (301) are installed on the operating panel (300) in an embedded mode.
7. The design method of the user-side intelligent microgrid according to claim 6, characterized in that: the top of the display screen (101) is provided with a notification display screen (102) for providing important notifications.
8. The design method of the user-side intelligent microgrid according to claim 6, characterized in that: the bottom of the operating device (100) is provided with a cold-rolled steel base (400), and the connecting side of the operating device (100) and the cold-rolled steel base (400) is provided with a damping base (105).
9. The design method of the user-side intelligent microgrid according to claim 8, characterized in that: be provided with burglary-resisting door (201) on mainframe box (200), a plurality of even equidistance arrangements and wiring mouth (202) that are linked together with inside host computer have been seted up to the back of mainframe box (200), and there is protective cover (203) one side of every wiring mouth (202) through hinged joint, the below of wiring mouth (202) is provided with wiring shift knob (204) that are used for control to correspond wiring mouth (202) break-make.
10. The design method of the user-side intelligent microgrid according to claim 9, characterized in that: the lifting device is characterized in that a seat (401) is mounted at the top of one side, close to the operating plate (300), of the cold-rolled steel base (400), a lifting base (402) is arranged at the bottom of the seat (401), a fixing seat (403) is mounted at the bottom of the lifting base (402), and a lifting operating handle (404) used for controlling lifting is arranged on one side of the lifting base (402).
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