CN111327109A - Laboratory emergency power supply system - Google Patents
Laboratory emergency power supply system Download PDFInfo
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- CN111327109A CN111327109A CN202010229047.0A CN202010229047A CN111327109A CN 111327109 A CN111327109 A CN 111327109A CN 202010229047 A CN202010229047 A CN 202010229047A CN 111327109 A CN111327109 A CN 111327109A
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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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
- 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
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- 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
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a laboratory emergency power supply system, which comprises: the power generation unit is used for generating power to generate electric energy; the battery energy storage unit is used for outputting stored electric energy; the grid-connected power cabinet is used for executing a grid-connected operation mode or an isolated network operation mode, so that the power generation unit and the battery energy storage unit output electric energy simultaneously or the power generation unit or the battery energy storage unit output electric energy independently, and an emergency power supply is provided for a laboratory; and the energy management unit is used for controlling the grid-connected power cabinet to enable the grid-connected power cabinet to execute a grid-connected operation mode or an isolated network operation mode. According to the invention, new energy sources such as photovoltaic energy, wind power and the like can be introduced on the basis of existing buildings and equipment in a laboratory, and are incorporated into an original power distribution system of the laboratory, and centralized control and metering are carried out, so that multiple energy sources are provided jointly, emergency power management and energy conservation and emission reduction benefits maximization of the laboratory are realized, the energy utilization efficiency and the power supply reliability of the laboratory are improved, and meanwhile, the power supply cost of the laboratory is reduced.
Description
Technical Field
The invention relates to the technical field of laboratory power supply, in particular to a laboratory emergency power supply system.
Background
At present, a power supply scheme for a laboratory generally adopts a single power supply as an emergency power supply, so that the reliability is not high, and the required power supply cost is high.
Other fields have presented power supply technologies in a single field related to photovoltaic, energy storage battery and emergency power supply, however, the power supply technologies in these different fields have strong independence and are completely separated from each other, and are not suitable for providing an overall emergency power supply service for a laboratory.
Therefore, at present, a scheme which can combine multiple energy sources to supply power to a laboratory so as to improve power supply stability and reduce power supply cost is not available.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
Therefore, the invention aims to provide a laboratory emergency power supply system which can introduce new energy such as photovoltaic energy, wind power and the like on the basis of existing buildings and equipment in a laboratory, is incorporated into an original laboratory power distribution system, and performs centralized control and metering, so that multiple energy sources are provided in a combined manner, emergency power supply management and energy conservation and emission reduction benefit maximization of the laboratory are realized, energy utilization efficiency and laboratory power supply reliability are improved, and laboratory power supply cost is reduced.
In order to achieve the above object, an embodiment of the present invention provides a laboratory emergency power supply system, including: the power generation unit is used for generating power to generate electric energy; the battery energy storage unit is used for outputting stored electric energy; the grid-connected power cabinet is respectively connected with the power generation unit and the battery energy storage unit and is used for executing a grid-connected operation mode or an isolated network operation mode, so that the power generation unit and the battery energy storage unit can simultaneously output electric energy or the power generation unit or the battery energy storage unit can independently output electric energy to provide an emergency power supply for the laboratory; and the energy management unit is connected with the grid-connected power cabinet and used for controlling the grid-connected power cabinet to enable the grid-connected power cabinet to execute a grid-connected operation mode or an isolated network operation mode.
In addition, the laboratory emergency power supply system according to the above embodiment of the present invention may further have the following additional technical features:
in some examples, the power generation unit includes at least one or more of a photovoltaic power generation unit, a wind power generation unit, and a photo-thermal power generation unit.
In some examples, the photovoltaic power generation unit includes: the single-side polycrystalline silicon photovoltaic module and the single-side monocrystalline silicon photovoltaic module are respectively and correspondingly connected to direct current ends of the first group of series inverters and the second group of series inverters, and the inverted alternating current is connected to an alternating current bus in the grid-connected power cabinet.
In some examples, the first and second sets of string inverters each have a communication interface to upload data to the energy management unit via the communication interface.
In some examples, the photovoltaic power generation unit further includes: the photovoltaic support is fixed on the photovoltaic support, and the photovoltaic support is installed on a roof at a preset inclination angle in a pressing block type foundation mode.
In some examples, the battery energy storage unit includes: the energy storage converter and the energy storage battery can be connected to the grid or operated off the grid.
In some examples, the energy storage converter, the energy storage battery, and the energy management unit are integrally disposed within a container.
In some examples, the grid-connected power cabinets comprise a first wire inlet, a second wire inlet and a plurality of power distribution loops, the first wire inlet is connected with the power generation unit, the second wire inlet is connected with the battery energy storage unit, and the grid-connected power cabinets are controlled to execute a grid-connected operation mode or an isolated grid operation mode in an interlocking manner through contactors in the power distribution loops.
In some examples, when all line contactors in the grid-connected power cabinet are disconnected, if the battery energy storage unit is started, the grid-connected power cabinet operates in an isolated network mode, in the isolated network mode, an incoming line switch of the grid-connected power cabinet is disconnected, the battery energy storage unit is started in an off-network mode, a bus of power of the grid-connected cabinet is electrified, an emergency power supply line contactor in the grid-connected power cabinet is closed, and the emergency power supply line contactor is switched to the battery energy storage unit to receive electric energy output by the battery energy storage unit.
In some examples, when the power generation unit is started, the energy storage line contactor in the grid-connected power cabinet is opened, the commercial power line contactor in the grid-connected power cabinet is closed, the power generation unit is switched to supply power, the energy storage incoming line switch of the grid-connected power cabinet is closed again, and the grid-connected working mode is switched to.
According to the laboratory emergency power supply system provided by the embodiment of the invention, new energy sources such as photovoltaic energy, wind power and the like can be introduced on the basis of existing buildings and equipment in a laboratory, and are merged into an original power distribution system in the laboratory, and centralized management control and metering are carried out, so that multiple energy sources are provided in a combined manner, the emergency power supply management and energy-saving and emission-reducing benefits maximization of the laboratory is realized, the energy utilization efficiency and the power supply reliability of the laboratory are improved, and the power supply cost of the laboratory is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of a laboratory emergency power system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to 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.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A laboratory emergency power supply system according to an embodiment of the present invention is described below with reference to the accompanying drawings.
Fig. 1 is a block diagram of a laboratory emergency power system according to an embodiment of the present invention. As shown in fig. 1, the laboratory emergency power supply system 100 includes: the power generation system comprises a power generation unit 110, a battery energy storage unit 120, a grid-connected power cabinet 130 and an energy management unit 140.
Specifically, the power generation unit 110 is used to generate electricity to generate electric energy.
In one embodiment of the present invention, the power generation unit 110 includes at least one or more of a photovoltaic power generation unit, a wind power generation unit, and a photo-thermal power generation unit. That is to say, a plurality of new energy power supplies such as wind power generation, photo-thermal power generation and photovoltaic power generation are introduced to provide an emergency power supply for a laboratory, a plurality of energy sources are integrated into the existing power distribution system of an enterprise, various energy sources are organically integrated, the energy utilization efficiency is improved, the reliable power supply quality of the laboratory is ensured, and the power supply reliability is improved.
Specifically, the photovoltaic power generation unit includes: the photovoltaic power system comprises a single-sided polycrystalline silicon photovoltaic component, a single-sided monocrystalline silicon photovoltaic component, a first group of string inverters and a second group of string inverters, wherein the single-sided polycrystalline silicon photovoltaic component and the single-sided monocrystalline silicon photovoltaic component are respectively and correspondingly connected to direct current ends of the first group of string inverters and the second group of string inverters, and inverted alternating current is connected to an alternating current bus in the grid-connected power cabinet 130.
In a specific embodiment, the photovoltaic power generation unit includes, for example, a 50kW single-sided polycrystalline silicon photovoltaic module and a 50kW single-sided monocrystalline silicon photovoltaic module, and the 50kW single-sided polycrystalline silicon photovoltaic module and the 50kW single-sided monocrystalline silicon photovoltaic module are respectively connected to dc terminals of 250kW groups of string-type inverters (i.e., a first group of string-type inverters and a second group of string-type inverters), and are inverted to ac 380V to be connected to an ac bus in the grid-connected power cabinet 130.
The first and second series inverters have communication interfaces to upload data to the energy management unit 140. The Energy management unit 140 is specifically an EMS (Energy management system). More specifically, the communication interface is, for example, a wired communication interface, that is, the inverter has a wired communication interface, so as to satisfy the requirement of uploading data to the EMS energy management system. The system is provided with a wired communication interface and can upload data to an EMS energy management system.
In one embodiment of the present invention, the photovoltaic power generation unit further includes: the photovoltaic support, single face polycrystalline silicon photovoltaic module, single face monocrystalline silicon photovoltaic module are fixed on the photovoltaic support, and the photovoltaic support is installed on the roof through a pressing block type foundation mode with a preset inclination angle.
In a specific embodiment, the predetermined angle is, for example, 30 degrees. Specifically, the photovoltaic support adopts a 30-degree optimal dip angle hot-dip galvanized steel support mounting mode, and a pressing block type basic scheme is adopted to be mounted on the roof, so that drilling and earthwork operation on the roof are not needed, the roof water resistance is not damaged, and the operation cost is reduced. That is, the embodiment of the invention utilizes the roof of a factory building and the like to build the distributed photovoltaic power station, has the characteristics of solid structure, wide and flat structure and no shielding at the front and the back, and is very suitable for the building of roof photovoltaic, thereby not only utilizing the roof resources, but also providing green and pollution-free electric energy supply for laboratories and improving the space and energy utilization rate.
The battery energy storage unit 120 is used to output the stored electric energy.
In one embodiment of the present invention, the battery energy storage unit 120 includes: the energy storage converter and the energy storage battery can be connected to the grid or operated off the grid.
In a specific embodiment, the battery energy storage unit 120 includes, for example, a 250kW energy storage converter and a 200kWh lithium iron phosphate energy storage battery, and the 250kW energy storage converter and the 200kWh lithium iron phosphate energy storage battery have grid-connected and off-grid operation functions. More specifically, the discharge depth of the 250kW energy storage converter and the 200kWh lithium iron phosphate battery pack can be 90%, and the maximum discharge capacity does not exceed 1C. An EMS energy management system is configured to realize active control on photovoltaic and energy storage, and a light-storage combined power generation strategy control function can be realized.
In one embodiment of the present invention, the energy storage converter, the energy storage battery and the energy management unit 140 are integrally disposed within the container.
In a specific embodiment, the battery energy storage unit 120 may adopt a 20-foot pre-installed container manner, and the energy storage converter, the energy storage battery, the energy management unit 140, the fire protection system, the air conditioner and the like are integrated in the container and are placed in the air space of the laboratory. Furthermore, the energy storage device can be provided with a remote communication interface to realize data uploading.
The grid-connected power cabinet 130 is connected to the power generation unit 110 and the battery energy storage unit 120, and is configured to execute a grid-connected operation mode or an isolated network operation mode, so that the power generation unit 110 and the battery energy storage unit 120 output electric energy at the same time or the power generation unit 110 or the battery energy storage unit 120 output electric energy separately, that is, joint power supply can be realized, an emergency power supply is provided for a laboratory, and power supply reliability is improved.
The energy management unit 140 is connected to the grid-connected power cabinet 130, and is configured to control the grid-connected power cabinet 130, so that the grid-connected power cabinet 130 executes a grid-connected operation mode or an isolated network operation mode.
In an embodiment of the present invention, the grid-connected power cabinets 130 are multiple in number, each grid-connected power cabinet 130 includes a first wire inlet, a second wire inlet, and multiple power distribution loops, the first wire inlet is connected to the power generation unit 110, the second wire inlet is connected to the battery energy storage unit 120, and the grid-connected power cabinets 130 are controlled in an interlocking manner by contactors in the multiple power distribution loops to execute a grid-connected operation mode or an isolated network operation mode.
In an exemplary embodiment, the number of grid-connected power cabinets 130 is, for example, 3 to 4, and may be placed in a laboratory power distribution room. The grid-connected power cabinet 130 is provided with two incoming lines, namely a first incoming line and a second incoming line, one line of commercial power is accessed, the other line of energy storage unit is accessed, and the grid-connected power cabinet has grid-connected operation and isolated network operation modes; a plurality of power distribution circuits are arranged in the grid-connected power cabinet 130, and a scheme of connecting commercial power or an energy storage isolated network by interlocking control of a double-path contactor can be selected.
Specifically, when all the line contactors in the grid-connected power cabinet 130 are disconnected, if the battery energy storage unit 120 is started, the grid-connected power cabinet 130 operates in an isolated grid mode, in the isolated grid mode, an incoming line switch of the grid-connected power cabinet 130 is disconnected, the battery energy storage unit 120 is started in an off-grid mode, a bus powered by the grid-connected power cabinet 130 is powered on, an emergency power supply circuit contactor in the grid-connected power cabinet 130 is closed, and is switched to the battery energy storage unit 120 to receive electric energy output by the battery energy storage unit 120.
In other words, when the utility power fails and the energy storage power station fails, all line contactors in the grid-connected power cabinet 130 are disconnected, the base electrician manually starts the energy storage power station as soon as possible to operate in the isolated grid mode, the incoming line switch of the grid-connected power cabinet 130 is disconnected, the energy storage unit is started in the off-grid mode, and the bus in the grid-connected power cabinet 130 is powered on. And closing the contactor of the emergency power circuit in the grid-connected power cabinet 130 and switching to the power side of the energy storage unit. The photovoltaic inverter is automatically put into grid-connected operation.
When the power generation unit 110 is started, the energy storage line contactor in the grid-connected power cabinet 130 is disconnected, the commercial power line contactor in the grid-connected power cabinet 130 is closed, the power is switched to the power generation unit 110, the power is supplied by the power generation unit 110, the energy storage incoming line switch of the grid-connected power cabinet 130 is closed again, and the grid-connected working mode is switched. In other words, the utility power is restored, the energy storage line contactor in the grid-connected power cabinet 130 is opened, the utility power line contactor is closed again, and the mode is switched to the utility power supply mode. And the inlet switch of the energy storage unit grid-connected power cabinet 130 is closed again, and the grid-connected working mode is switched to. The photovoltaic inverter is automatically put into grid-connected operation.
Further, in the specific embodiment, the branch equipment breakers in the power boxes in the dining hall and the dormitory are modified into low-voltage tripping type, so that part of non-important loads can be tripped in a low-voltage mode conveniently during power failure, and the battery capacity is not occupied. The corresponding 4 field grid-connected power cabinets 130 in the scandium antimony workshop and the extraction laboratory are introduced into the power cabinet by adopting a mode that the grid-connected power cabinet 130 draws a special cable. In a fire department, a filling laboratory, a comprehensive laboratory and the like, the grid-connected power cabinet 130 is adopted to lay cables to the corresponding drawer cabinets, and when power is cut off, professional operators are required to disconnect the commercial power circuit breaker first, disconnect non-important loads on site and close the emergency power circuit breaker.
In conclusion, the laboratory emergency power supply system is an integral scheme of a laboratory emergency power supply combining a photovoltaic power supply, a wind driven generator, a photo-thermal power generation power supply, an energy storage power supply and other new energy power supplies and an energy management platform, improves the energy utilization efficiency, and simultaneously utilizes the green and healthy development of enterprises to establish an industry model; various energy sources are introduced, an energy storage device is added, and the energy is opened and throttled, so that the energy supply is increased, the energy consumption is reduced, and the power supply cost of a laboratory is reduced; the system integrates various energy sources into the existing power distribution system of an enterprise, wherein the photovoltaic has intermittency, organically integrates the various energy sources, improves the utilization efficiency of the energy sources, ensures the reliable power supply quality of a laboratory, and simultaneously solves the problems of analysis and planning of the multiple energy sources, access schemes and configuration proportions of the various energy sources, energy metering and management, coordination and optimization control and the like.
That is, the laboratory emergency power supply system of the embodiment of the invention integrates technical measures such as a distributed photovoltaic power generation technology, an electrochemical energy storage technology, an informatization and control technology and the like, achieves the purposes of self-generating capacity, emergency power supply, electric quantity saving and the like, meets the development requirements of national energy-saving industry, meets the requirements of social and economic development and ecological environment protection, is beneficial to achieving the purposes of energy conservation and emission reduction, and simultaneously reduces the energy cost for users and achieves the requirements of emergency power supply.
According to the laboratory emergency power supply system provided by the embodiment of the invention, new energy sources such as photovoltaic energy, wind power and the like can be introduced on the basis of existing buildings and equipment in a laboratory, and are merged into an original power distribution system in the laboratory, and centralized management control and metering are carried out, so that multiple energy sources are provided in a combined manner, the emergency power supply management and energy-saving and emission-reducing benefits maximization of the laboratory is realized, the energy utilization efficiency and the power supply reliability of the laboratory are improved, and the power supply cost of the laboratory is reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A laboratory emergency power system, comprising:
the power generation unit is used for generating power to generate electric energy;
the battery energy storage unit is used for outputting stored electric energy;
the grid-connected power cabinet is respectively connected with the power generation unit and the battery energy storage unit and is used for executing a grid-connected operation mode or an isolated network operation mode, so that the power generation unit and the battery energy storage unit can simultaneously output electric energy or the power generation unit or the battery energy storage unit can independently output electric energy to provide an emergency power supply for the laboratory;
and the energy management unit is connected with the grid-connected power cabinet and used for controlling the grid-connected power cabinet to enable the grid-connected power cabinet to execute a grid-connected operation mode or an isolated network operation mode.
2. The laboratory emergency power supply system of claim 1, wherein the power generation unit comprises at least one or more of a photovoltaic power generation unit, a wind power generation unit, and a photo-thermal power generation unit.
3. Laboratory emergency power supply system according to claim 2, characterized in that said photovoltaic power generation unit comprises: a single-sided polycrystalline silicon photovoltaic module, a single-sided monocrystalline silicon photovoltaic module, a first set of string inverters and a second set of string inverters, wherein,
the single-sided polycrystalline silicon photovoltaic module and the single-sided monocrystalline silicon photovoltaic module are respectively and correspondingly connected to the direct current ends of the first group of series inverters and the second group of series inverters, and the inverted alternating current is connected to an alternating current bus in the grid-connected power cabinet.
4. The laboratory emergency power supply system of claim 3, wherein the first and second series of inverters each have a communication interface to upload data to the energy management unit via the communication interface.
5. The laboratory emergency power supply system of claim 3, wherein the photovoltaic power generation unit further comprises:
the photovoltaic support is fixed on the photovoltaic support, and the photovoltaic support is installed on a roof at a preset inclination angle in a pressing block type foundation mode.
6. The laboratory emergency power supply system of claim 1, wherein the battery energy storage unit comprises: the energy storage converter and the energy storage battery can be connected to the grid or operated off the grid.
7. The laboratory emergency power supply system of claim 6, wherein the energy storage converter, the energy storage battery and the energy management unit are integrally disposed within a shipping container.
8. The laboratory emergency power supply system according to claim 1, wherein the grid-connected power cabinets are multiple in number, each grid-connected power cabinet comprises a first wire inlet, a second wire inlet and a plurality of power distribution circuits, the first wire inlet is connected with the power generation unit, the second wire inlet is connected with the battery energy storage unit, and the grid-connected power cabinets are controlled to execute a grid-connected operation mode or an isolated grid operation mode in a linkage manner through contactors in the plurality of power distribution circuits.
9. The laboratory emergency power supply system according to claim 8, wherein when all line contactors in the grid-connected power cabinet are disconnected, if the battery energy storage unit is started, the grid-connected power cabinet operates in an isolated grid mode, in the isolated grid mode, the incoming line switch of the grid-connected power cabinet is disconnected, the battery energy storage unit is started in an off-grid mode, a bus of power of the grid-connected cabinet is powered on, the emergency power supply line contactor in the grid-connected power cabinet is closed, and is switched to the battery energy storage unit to receive electric energy output by the battery energy storage unit.
10. The laboratory emergency power supply system according to claim 8, wherein when the power generation unit is started, the energy storage line contactor in the grid-connected power cabinet is opened, the mains supply line contactor in the grid-connected power cabinet is closed, the power generation unit is switched to, the power generation unit supplies power, the energy storage incoming line switch of the grid-connected power cabinet is closed again, and the grid-connected operation mode is switched to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010229047.0A CN111327109A (en) | 2020-03-27 | 2020-03-27 | Laboratory emergency power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010229047.0A CN111327109A (en) | 2020-03-27 | 2020-03-27 | Laboratory emergency power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374267A (en) * | 2022-03-21 | 2022-04-19 | 浙江浙能能源服务有限公司 | Multi-power supply hybrid power supply switching system for shelter nucleic acid laboratory |
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- 2020-03-27 CN CN202010229047.0A patent/CN111327109A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374267A (en) * | 2022-03-21 | 2022-04-19 | 浙江浙能能源服务有限公司 | Multi-power supply hybrid power supply switching system for shelter nucleic acid laboratory |
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