CN114336929A - Prefabricated formula transformer substation with photovoltaic energy storage fills electric pile - Google Patents
Prefabricated formula transformer substation with photovoltaic energy storage fills electric pile Download PDFInfo
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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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings 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
- 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
- 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
- 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
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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Abstract
The invention provides a prefabricated substation with a photovoltaic energy storage charging pile.A prefabricated cabin is prefabricated to an installation place, and an energy storage device, a diesel engine generator, UPS equipment, an ammeter, a low-voltage power distribution cabinet and informatization control equipment are installed inside the prefabricated cabin; respectively electrically connecting the distributed photovoltaic power generation device and the charging pile with the prefabricated cabin; the distributed photovoltaic power generation device is used for performing photovoltaic power generation through solar energy, storing generated electricity into the energy storage device, or converting the photovoltaic power generation through the direct current and alternating current of the low-voltage power distribution cabinet according to the control of the information control equipment, and inputting the converted electricity into a power grid after voltage transformation; the information control equipment is connected with the ammeter, acquires the generated energy of the distributed photovoltaic power generation device and the electric quantity of the photovoltaic power generation device on the grid, and uploads the operation data of the prefabricated substation to the grid server through connection with the grid server. The photovoltaic energy storage charging device has the advantages that the manufacturing and installation period is short, multiple functions of photovoltaic energy storage charging are realized, and various requirements of users are met.
Description
Technical Field
The invention relates to the technical field of transformer substations, in particular to a prefabricated transformer substation with a photovoltaic energy storage charging pile.
Background
The transformer substation is a place for converting voltage and current, receiving electric energy and distributing electric energy in an electric power system. The substations in the power plant are step-up substations, which are used to boost up the electrical energy generated by the generator and feed it into the high-voltage network.
The construction of the transformer substation requires field manufacturing, field installation, debugging and operation. The method causes the problems of long manufacturing period and long construction period. At present, a prefabricated substation is developed, and the convenience of use after debugging can be realized only by field installation. However, the substation can only realize the function of voltage transformation or voltage regulation, so that the function of the substation is single. And the current prefabricated substation lacks the monitoring and collection of internal data, and if abnormity and fault occur, the operation is easy to be unstable because the abnormity and fault cannot be found.
Disclosure of Invention
The invention provides a prefabricated substation which is stable in operation and provided with a photovoltaic energy storage charging pile.
The method specifically comprises the following steps: a distributed photovoltaic power generation device and a prefabricated cabin;
installing a prefabricated cabin at a preset place, and installing an energy storage device, a diesel engine generator, UPS equipment, an ammeter, a low-voltage power distribution cabinet and informatization control equipment in the prefabricated cabin; respectively electrically connecting the distributed photovoltaic power generation device and the charging pile with the prefabricated cabin;
the distributed photovoltaic power generation device is used for performing photovoltaic power generation through solar energy, storing generated electricity into the energy storage device, or converting the photovoltaic power generation through the direct current and alternating current of the low-voltage power distribution cabinet according to the control of the information control equipment, and inputting the converted electricity into a power grid after voltage transformation;
the information control equipment is used for acquiring a control instruction input by a user and controlling the diesel engine generator to operate to charge the energy storage device;
the information control equipment is connected with the ammeter, acquires the generated energy of the distributed photovoltaic power generation device and the electric quantity of the photovoltaic power generation device on the grid, and uploads the operation data of the prefabricated substation to the grid server through connection with the grid server.
It should be further noted that the outer wall of the prefabricated cabin is wrapped with a composite magnetic isolation layer structure, the composite magnetic isolation layer structure comprises permalloy sheets and silicon steel sheets, and the permalloy sheets and the silicon steel sheets are mutually adhered to form the composite magnetic isolation layer structure;
the permalloy is usually an iron-nickel alloy, the nickel content is in the range of 30-90%, the permalloy has the initial permeability of over 105, the maximum permeability of over 106, the coercive force as low as 2% o oersted and the rectangular coefficient close to 1 or 0, the permalloy with the face-centered cubic crystal structure has plasticity, and the permalloy is processed into an ultra-thin strip with the thickness of 1 mu m and various use forms;
the prefabricated cabin is provided with antimagnetic paint.
It is further noted that the overall specification and size of the prefabricated cabin are set according to the actual field environment, the length of the prefabricated cabin is 8-15 meters, the width of the prefabricated cabin is 2-2.5 meters, and the height of the prefabricated cabin is 2.5-3.5 meters;
the interfaces of the cables and the optical cables are arranged at the top or the bottom of the prefabricated cabin, and a bridge frame and routing space are reserved at the top or the bottom of the prefabricated cabin;
the outer wall of the prefabricated cabin is made of stainless steel materials; the side wall of the prefabricated cabin is provided with an interlayer, and a heat insulation material is attached to the interlayer, and the fireproof performance of the heat insulation material is not lower than V2 level;
the main structure of the prefabricated cabin adopts H-shaped steel as a main beam and a frame, and the main beam and the frame are connected by welding or bolts;
the main structure of the prefabricated cabin is supported by I-shaped steel or channel steel, so that the strength of the prefabricated cabin is improved;
one side of the prefabricated cabin is provided with a double door, and the other side of the prefabricated cabin is provided with a personnel entrance;
the top of the prefabricated cabin is provided with an inclined strut, and the inclined strut and the box top keep an included angle of 15 degrees, so that water accumulation is prevented, and the sunshine irradiation of the box top is reduced.
It is further noted that the informatization control equipment comprises a wireless communication module, an audio and video module, a user input module, a sensing module, an output module, a memory, an interface module, a processor and a power module;
the information control equipment can collect the internal operation data information of the prefabricated substation, is in communication connection with a power grid server in real time, and performs data processing on analog quantity and digital quantity inside the prefabricated substation, and has the functions of preventing misoperation locking and logging;
the information control equipment has an equipment state visual display function, collects the running state of the primary equipment and the running state of the secondary equipment of the prefabricated substation, and stores and sends the running states;
the information control equipment provides operation data support for the power grid and realizes the full life cycle management of the prefabricated substation based on state monitoring;
the informatization control equipment realizes intelligent control by automatically adjusting the voltage of the transformer and the reactive compensation equipment;
the information control equipment has the functions of acquiring configuration, executing power files, power data and power models, outputting power models and power graphs and provides support for automatic maintenance of the prefabricated substation.
Further, the low-voltage power distribution cabinet and the related cabinet bodies thereof are arranged in a single-side-by-side manner in the prefabricated cabin; the cable sheath protection level meets IP67 and IP 65; the plug-and-play socket is prefabricated inside and outside the cabin;
an energy storage area, a diesel engine power generation area, a UPS equipment area, an ammeter area, a power distribution cabinet area and an informatization control area are arranged in the prefabricated cabin; each area is provided with a standard wiring groove and a standard wiring interface which are connected with secondary equipment in the cabin through optical cables;
connecting a multi-core outdoor prefabricated cable with external equipment;
a conductive copper bar and a cable trench are laid at the bottom of the prefabricated cabin and are used for grounding the prefabricated cabin and secondarily connecting a power distribution cabinet with external equipment;
and manufacturing the prefabricated cabin in a manufacturing plant according to the field and use requirements, transporting the manufactured prefabricated cabin to a construction field, and then butting and installing the prefabricated cabin with field primary equipment.
Further, the information control equipment acquires the grid-connected electricity data of the three-phase electricity before the photovoltaic power generation is connected to the grid;
judging whether the three-phase power grid online electricity data are matched with the power grid operation electricity data;
specifically, judging whether the three-phase power grid-connected electricity data is within a preset threshold range of the unbalance degree;
if the current grid-connected state is not within the preset threshold range, the grid-connected electricity data of the three-phase electricity before the current photovoltaic power generation grid-connected state is in an unbalanced state, and the current grid-connected state is turned off;
if the three-phase power is within the preset threshold range, judging that the three-phase power is in a balanced state before the photovoltaic power generation is on the internet, and controlling the photovoltaic power generation to be on the internet when the three-phase power is still in the balanced state after the preset time is continuously obtained.
It should be further noted that the informatization control equipment is also used for acquiring operation data information of the energy storage device, the diesel generator, the UPS equipment, the low-voltage power distribution cabinet and the distributed photovoltaic power generation device; and judging whether the operation data information exceeds a threshold value, if so, alarming to a power grid server, and simultaneously cutting off the operation of corresponding equipment.
If the range of the threshold value is not exceeded, the previous operation data information of the energy storage device, the diesel engine generator, the UPS equipment, the low-voltage power distribution cabinet and the distributed photovoltaic power generation device in the storage is taken and compared;
and establishing an operation curve trend graph of the energy storage device, the diesel engine generator, the UPS equipment, the low-voltage power distribution cabinet and the distributed photovoltaic power generation device by using big data software, marking abnormal points, analyzing a critical point threshold value of data abnormality, judging whether current operation data information approaches the critical point threshold value or not, or whether the current operation data information continues to develop towards the critical point threshold value or not, and displaying the current operation data information.
The information control equipment is further used for carrying out face identification verification and identity verification on personnel entering the prefabricated cabin, and the personnel enter the prefabricated cabin after the verification is passed;
the power grid server stores face information and identity verification information of personnel having the authority to enter the prefabricated cabin, the information control equipment verifies the face information and the identity information of the personnel currently entering the prefabricated cabin by sending the face information and the identity information of the personnel currently entering the prefabricated cabin when verification is carried out, and the personnel can enter the prefabricated cabin after the verification is passed.
According to the technical scheme, the invention has the following advantages:
the prefabricated substation with the photovoltaic energy storage charging pile provided by the invention realizes seamless switching of different power supplies and multiple power generation functions, and can ensure reliable power supply of important loads. The prefabricated cabin replaces the traditional building, and has the advantages of reducing civil engineering construction amount, being short in construction period, being capable of being constructed in winter, being clear in management interface, saving occupied area and the like.
The prefabricated transformer substation is designed in a modularized mode, processed in a factory mode and built in an assembly mode, can be flexibly configured according to changes of requirements of toll stations, tunnels and service areas, can integrate energy stations of functional areas such as transformers, high and low voltages, UPS and diesel generators, and can be used for establishing a micro-grid system covering photovoltaic, energy storage and charging piles in a new energy matching mode.
The prefabricated substation with the photovoltaic energy storage charging pile provided by the invention can comprise operation information and state information of other power equipment as required, store the operation information and the state information into the storage and configure an operation curve trend chart of a current monitoring period. Of course, the running information with the fault state or the abnormal state is stored at the same time, and meanwhile, a trend chart of the running information from the normal condition to the fault state or the abnormal state can be seen. And calling based on each monitoring period, comparing the obtained operation data information with the currently obtained operation data information to obtain whether the current operation data information approaches to the threshold value of the critical point or whether the current operation data information continues to develop towards the threshold value of the critical point, and displaying the obtained operation data information. The invention realizes the monitoring of the internal equipment of the prefabricated substation, manages and tracks the operation data of the prefabricated substation, and calls and compares the operation data in real time, so that the operation data can be found in time if abnormity or fault occurs. Under a normal state, the critical point threshold value of the abnormal data can be analyzed, whether the current operation data information approaches to the critical point threshold value or not is judged, or whether the current operation data information continues to develop towards the critical point threshold value or not is judged, and the current operation data information is displayed, so that the stable operation of the prefabricated substation is ensured.
The prefabricated substation with the photovoltaic energy storage charging pile is connected with external equipment by adopting a multi-core outdoor prefabricated cable; a conductive copper bar and a cable trench are laid at the bottom of the prefabricated cabin and are used for grounding the prefabricated cabin and secondarily connecting a power distribution cabinet with external equipment; and manufacturing the prefabricated cabin in a manufacturing plant according to the field and use requirements, transporting the manufactured prefabricated cabin to a construction field, and then butting and installing the prefabricated cabin with field primary equipment. And splicing and installing the prefabricated cabin on site. And after the prefabricated cabin is transported to the site, the prefabricated cabin is hoisted in place by a crane and is installed for use.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a prefabricated substation with photovoltaic energy storage charging piles.
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.
The modules and algorithm steps of the examples described in the embodiments disclosed in the prefabricated substation with photovoltaic energy storage charging pile provided by the present invention can be implemented by electronic hardware, computer software or a combination of both, and in order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been generally described in terms of functions in the above description. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The block diagram shown in the attached drawing of the prefabricated substation with the photovoltaic energy storage charging pile is only a functional entity and does not necessarily correspond to a physically independent entity. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
In the prefabricated substation with the photovoltaic energy storage charging pile provided by the invention, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may also be an electrical, mechanical or other form of connection.
The features, structures or characteristics described for the prefabricated substation with photovoltaic energy storage charging poles provided by the present invention may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations or operations have not been shown or described in detail to avoid obscuring aspects of the invention.
As shown in fig. 1, the prefabricated substation with photovoltaic energy storage charging pile provided by the invention comprises: the system comprises a distributed photovoltaic power generation device 3 and a prefabricated cabin 1; the method comprises the following steps of installing a prefabricated cabin at a preset place, and installing an energy storage device 8, a diesel engine generator 4, UPS equipment 6, an ammeter 7, a low-voltage power distribution cabinet 5 and informatization control equipment 9 in the prefabricated cabin 1; the distributed photovoltaic power generation device 3 and the charging pile are respectively and electrically connected with the prefabricated cabin 1;
the distributed photovoltaic power generation device 3 is used for performing photovoltaic power generation through solar energy, storing generated electricity into the energy storage device 8, or converting the photovoltaic power generation through the direct current and the alternating current of the low-voltage power distribution cabinet 5 according to the control of the information control equipment 9, and inputting the converted electricity into a power grid after voltage transformation;
the information control equipment 9 is used for acquiring a control instruction input by a user and controlling the diesel engine generator 4 to operate to charge the energy storage device 8;
the information control equipment 9 is connected with the ammeter 7, acquires the generated energy of the distributed photovoltaic power generation device 3 and the electric quantity of the photovoltaic network, and uploads the operation data of the prefabricated substation to the power grid server by being connected with the power grid server 2.
The information control equipment 9 comprises a wireless communication module, an audio and video module, a user input module, a sensing module, an output module, a memory, an interface module, a processor and a power supply module;
the informatization control equipment 9 can collect operation data information inside the prefabricated substation, is in communication connection with a power grid server in real time, and performs data processing on analog quantity and digital quantity inside the prefabricated substation, and the informatization control equipment 9 has the functions of preventing misoperation locking and log recording;
the information control equipment 9 has an equipment state visual display function, collects the running state of the primary equipment and the running state of the secondary equipment of the prefabricated substation, and stores and transmits the running states;
the informatization control equipment 9 provides operation data support for the power grid, and the full life cycle management of the prefabricated substation based on state monitoring is realized;
the informatization control equipment 9 realizes intelligent control by automatically adjusting the voltage of the transformer and reactive compensation equipment;
the information control equipment 9 has the functions of acquiring configuration, executing power files, power data and power models, outputting power models and power graphs, and provides support for automatic maintenance of the prefabricated substation.
The information control device 9 has a Wireless internet Access technology, and may include a Wireless Local Area network (Wi-Fi, WLAN), a Wireless broadband (Wibro), a worldwide interoperability for microwave Access (Wimax), a High Speed Downlink Packet Access (HSDPA), and so on.
The informatization control equipment 9 can display the state information of the prefabricated substation with the photovoltaic energy storage charging pile. For example, when a prefabricated substation with a photovoltaic energy storage charging pile is in a photovoltaic power generation mode, the operation information of the charging pile in a working state, the information in an energy storage and power supply state and the like can display text information, multimedia file information and the like, and the prefabricated substation is provided with a user operation interface or a graphical user interface.
The information control device 9 may include at least one of a Liquid Crystal Display (LCD), a Thin Film Transistor LCD (TFT-LCD), an Organic Light-Emitting Diode (OLED) Display, a flexible Display, a three-dimensional (3D) Display, and the like. Some of these displays may be configured to be transparent to allow a user to see from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a Transparent Organic Light Emitting Diode (TOLED) display or the like.
The informatization control equipment 9 may be implemented using at least one of Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, electronic modules designed to perform the functions described herein, and in some cases, such implementations may be implemented in a controller. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in memory and executed by the controller.
The informatization control equipment 9 has a safety protection function, carries out face recognition verification and identity verification on personnel entering the prefabricated cabin 1, and enters the prefabricated cabin 1 after passing the verification; the power grid server stores face information and identity authentication information of personnel having the authority to enter the prefabricated cabin 1, when the face information and the identity authentication information are verified, the information control equipment 9 verifies the face information and the identity information of the personnel currently entering the prefabricated cabin 1 by sending, and the personnel can enter the prefabricated cabin after the face information and the identity information are verified. And the information of the personnel entering the prefabricated cabin 1 is stored in a server, so that the privacy information of the personnel is protected.
As an embodiment of the invention, the information control device 9 acquires the grid power data of the three-phase power before the photovoltaic power generation is on the grid; judging whether the three-phase power grid online electricity data are matched with the power grid operation electricity data;
specifically, judging whether the three-phase power grid-connected electricity data is within a preset threshold range of the unbalance degree; if the current grid-connected state is not within the preset threshold range, the grid-connected electricity data of the three-phase electricity before the current photovoltaic power generation grid-connected state is in an unbalanced state, and the current grid-connected state is turned off; if the three-phase power is within the preset threshold range, judging that the three-phase power is in a balanced state before the photovoltaic power generation is on the internet, and controlling the photovoltaic power generation to be on the internet when the three-phase power is still in the balanced state after the preset time is continuously obtained.
As another embodiment of the present invention, the informatization control equipment 9 is further configured to obtain operation data information of the energy storage device 8, the diesel generator 4, the UPS equipment 6, the low-voltage power distribution cabinet 5, and the distributed photovoltaic power generation apparatus 3; and judging whether the operation data information exceeds a threshold value, if so, alarming to a power grid server, and simultaneously cutting off the operation of corresponding equipment.
If the threshold range is not exceeded, the previous operation data information of the energy storage device 8, the diesel engine generator 4, the UPS equipment 6, the low-voltage power distribution cabinet 5 and the distributed photovoltaic power generation device 3 in the storage is called and compared;
and by using big data software, establishing an operation curve trend chart of the energy storage device 8, the diesel engine generator 4, the UPS equipment 6, the low-voltage power distribution cabinet 5 and the distributed photovoltaic power generation device 3, marking abnormal points, analyzing a critical point threshold value of data abnormality, judging whether current operation data information approaches to the critical point threshold value or continues to develop towards the critical point threshold value, and displaying.
In the prefabricated substation with the photovoltaic energy storage charging pile, the energy storage device 8, the diesel generator 4, the UPS equipment 6, the low-voltage power distribution cabinet 5 and the distributed photovoltaic power generation device 3 are obtained in real time, the prefabricated substation is not limited to the devices, and the operation information and the state information of other power equipment can be included as required, stored in the storage and configured into the operation curve trend graph of the current monitoring period. Of course, the running information with the fault state or the abnormal state is stored at the same time, and meanwhile, a trend chart of the running information from the normal condition to the fault state or the abnormal state can be seen. And calling based on each monitoring period, comparing the obtained operation data information with the currently obtained operation data information to obtain whether the current operation data information approaches to the threshold value of the critical point or whether the current operation data information continues to develop towards the threshold value of the critical point, and displaying the obtained operation data information. The invention realizes the monitoring of the internal equipment of the prefabricated substation, manages and tracks the operation data of the prefabricated substation, and calls and compares the operation data in real time, so that the operation data can be found in time if abnormity or fault occurs. Under a normal state, the critical point threshold value of the abnormal data can be analyzed, whether the current operation data information approaches to the critical point threshold value or not is judged, or whether the current operation data information continues to develop towards the critical point threshold value or not is judged, and the current operation data information is displayed, so that the stable operation of the prefabricated substation is ensured.
The techniques described herein may be implemented in hardware, software, firmware, or any combination thereof. Various features are described as modules, modules or components that may be implemented together in an integrated logic device or separately as discrete but interoperable logic devices or other hardware devices. In some cases, various features of an electronic circuit may be implemented as one or more integrated circuit devices, such as an integrated circuit chip or chipset.
If implemented in hardware, the invention relates to an apparatus, which may be, for example, a processor or an integrated circuit device, such as an integrated circuit chip or chipset. Alternatively or additionally, if implemented in software or firmware, the techniques may implement a data storage medium readable at least in part by a computer, comprising instructions that when executed cause a processor to perform one or more of the above-described methods. For example, a computer-readable data storage medium may store instructions that are executed, such as by a processor.
In some embodiments, computer-readable storage media may include non-volatile media. The term "non-transitory" as used herein may indicate that the storage medium does not contain a carrier wave or a propagated signal. In some embodiments, a non-transitory storage medium may store data, which may change over time (e.g., in RAM or cache).
As another embodiment of the invention, the outer wall of the prefabricated cabin 1 is wrapped with a composite magnetic isolation layer structure, the composite magnetic isolation layer structure comprises permalloy sheets and silicon steel sheets, and the permalloy sheets and the silicon steel sheets are mutually pasted to form the composite magnetic isolation layer structure;
the permalloy is usually an iron-nickel alloy, the nickel content is in the range of 30-90%, the permalloy has the initial permeability of over 105, the maximum permeability of over 106, the coercive force as low as 2% o oersted and the rectangular coefficient close to 1 or 0, the permalloy with the face-centered cubic crystal structure has plasticity, and the permalloy is processed into an ultra-thin strip with the thickness of 1 mu m and various use forms;
the prefabricated cabin 1 is provided with antimagnetic paint.
The overall specification and size of the prefabricated cabin 1 are set according to the actual field environment, the length of the prefabricated cabin 1 is 8-15 meters, the width of the prefabricated cabin 1 is 2-2.5 meters, and the height of the prefabricated cabin 1 is 2.5-3.5 meters;
the interfaces of the cables and the optical cables are arranged at the top or the bottom of the prefabricated cabin 1, and a bridge frame and routing space are reserved at the top or the bottom of the prefabricated cabin 1;
the outer wall of the prefabricated cabin 1 is made of stainless steel materials; the side wall of the prefabricated cabin 1 is provided with an interlayer, and a heat insulation material is attached to the interlayer, wherein the fireproof performance of the heat insulation material is not lower than V2 level;
the main structure of the prefabricated cabin 1 adopts H-shaped steel as a main beam and a frame, and the main beam and the frame are connected by welding or bolts; the main structure of the prefabricated cabin 1 is supported by I-shaped steel or channel steel, so that the strength of the prefabricated cabin 1 is improved; one side of the prefabricated cabin 1 is provided with a double door, and the other side is provided with a personnel entrance; the top of the prefabricated cabin 1 is provided with an inclined strut, and the inclined strut and the box top keep an included angle of 15 degrees, so that water accumulation is prevented, and the sunshine irradiation of the box top is reduced. The interior of the prefabricated cabin 1 adopts a single-side-by-side arrangement low-voltage power distribution cabinet 5 and related cabinets thereof; the cable sheath protection level meets IP67 and IP 65; the plug-and-play socket is prefabricated inside and outside the cabin; an energy storage area, a diesel engine power generation area, a UPS (uninterrupted power supply) equipment 6 area, an ammeter 7 area, a power distribution cabinet area and an informatization control area are arranged in the prefabricated cabin 1; each area is provided with a standard wiring groove and a standard wiring interface which are connected with secondary equipment in the cabin through optical cables;
connecting a multi-core outdoor prefabricated cable with external equipment; a conductive copper bar and a cable trench are laid at the bottom of the prefabricated cabin 1 and are used for grounding the prefabricated cabin 1 and secondarily connecting a power distribution cabinet with external equipment; manufacturing the prefabricated cabin 1 in a manufacturing factory according to the field and use requirements, transporting the manufactured prefabricated cabin 1 to a construction field, and then butting and installing the prefabricated cabin with field primary equipment. The prefabricated cabin 1 is spliced and installed at the site. And after being transported to the site, the prefabricated cabin 1 is hoisted in place by a crane and is installed for use.
The prefabricated substation with the photovoltaic energy storage charging pile provided by the invention realizes seamless switching of different power supplies and multiple power generation functions, and can ensure reliable power supply of important loads. The prefabricated cabin 1 replaces the traditional building, and has the advantages of reducing the civil engineering construction amount, being short in construction period, being capable of being constructed in winter, being clear in management interface, saving occupied area and the like.
The prefabricated transformer substation is designed in a modularized mode, processed in a factory mode and built in an assembly mode, can be flexibly configured according to changes of requirements of toll stations, tunnels and service areas, can integrate energy stations of functional areas such as transformers, high and low voltages, UPS and diesel generators, and can be used for establishing a micro-grid system covering photovoltaic, energy storage and charging piles in a new energy matching mode.
As will be appreciated by those skilled in the art, various aspects of a prefabricated substation with photovoltaic energy storage charging piles may be implemented as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
The communication mode of the prefabricated substation with the photovoltaic energy storage charging pile includes, but is not limited to, wireless, wired, optical cable, RF, and the like, or any suitable combination of the foregoing.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a prefabricated formula transformer substation with stake is filled in photovoltaic energy storage which characterized in that includes: a distributed photovoltaic power generation device and a prefabricated cabin;
installing a prefabricated cabin at a preset place, and installing an energy storage device, a diesel engine generator, UPS equipment, an ammeter, a low-voltage power distribution cabinet and informatization control equipment in the prefabricated cabin; respectively electrically connecting the distributed photovoltaic power generation device and the charging pile with the prefabricated cabin;
the distributed photovoltaic power generation device is used for performing photovoltaic power generation through solar energy, storing generated electricity into the energy storage device, or converting the photovoltaic power generation through the direct current and alternating current of the low-voltage power distribution cabinet according to the control of the information control equipment, and inputting the converted electricity into a power grid after voltage transformation;
the information control equipment is used for acquiring a control instruction input by a user and controlling the diesel engine generator to operate to charge the energy storage device;
the information control equipment is connected with the ammeter, acquires the generated energy of the distributed photovoltaic power generation device and the electric quantity of the photovoltaic power generation device on the grid, and uploads the operation data of the prefabricated substation to the grid server through connection with the grid server.
2. The prefabricated substation with photovoltaic energy storage charging pile according to claim 1,
the outer wall of the prefabricated cabin is wrapped with a composite magnetism isolating layer structure, the composite magnetism isolating layer structure comprises permalloy sheets and silicon steel sheets, and the permalloy sheets and the silicon steel sheets are mutually pasted to form the composite magnetism isolating layer structure;
the permalloy is usually an iron-nickel alloy, the nickel content is in the range of 30-90%, the permalloy has the initial permeability of over 105, the maximum permeability of over 106, the coercive force as low as 2% o oersted and the rectangular coefficient close to 1 or 0, the permalloy with the face-centered cubic crystal structure has plasticity, and the permalloy is processed into an ultra-thin strip with the thickness of 1 mu m and various use forms;
the prefabricated cabin is provided with an antimagnetic coating layer.
3. The prefabricated substation with photovoltaic energy storage charging pile according to claim 1,
the overall specification and size of the prefabricated cabin are set according to the actual field environment, the length of the prefabricated cabin is 8-15 meters, the width of the prefabricated cabin is 2-2.5 meters, and the height of the prefabricated cabin is 2.5-3.5 meters;
the interfaces of the cables and the optical cables are arranged at the top or the bottom of the prefabricated cabin, and a bridge frame and routing space are reserved at the top or the bottom of the prefabricated cabin;
the outer wall of the prefabricated cabin is made of stainless steel materials; the side wall of the prefabricated cabin is provided with an interlayer, and a heat insulation material is attached to the interlayer, and the fireproof performance of the heat insulation material is not lower than V2 level;
the main structure of the prefabricated cabin adopts H-shaped steel as a main beam and a frame, and the main beam and the frame are connected by welding or bolts;
the main structure of the prefabricated cabin is supported by I-shaped steel or channel steel, so that the strength of the prefabricated cabin is improved;
one side of the prefabricated cabin is provided with a double door, and the other side of the prefabricated cabin is provided with a personnel entrance;
the top of the prefabricated cabin is provided with an inclined strut, and the inclined strut and the box top keep an included angle of 15 degrees, so that water accumulation is prevented, and the sunshine irradiation of the box top is reduced.
4. The prefabricated substation with photovoltaic energy storage charging pile according to claim 1,
the information control equipment comprises a wireless communication module, an audio and video module, a user input module, a sensing module, an output module, a memory, an interface module, a processor and a power supply module;
the information control equipment can collect the internal operation data information of the prefabricated substation, is in communication connection with a power grid server in real time, and performs data processing on analog quantity and digital quantity inside the prefabricated substation, and has the functions of preventing misoperation locking and logging;
the information control equipment has an equipment state visual display function, collects the running state of the primary equipment and the running state of the secondary equipment of the prefabricated substation, and stores and sends the running states;
the information control equipment provides operation data support for the power grid and realizes the full life cycle management of the prefabricated substation based on state monitoring;
the informatization control equipment realizes intelligent control by automatically adjusting the voltage of the transformer and the reactive compensation equipment;
the information control equipment has the functions of acquiring configuration, executing power files, power data and power models, outputting power models and power graphs and provides support for automatic maintenance of the prefabricated substation.
5. The prefabricated substation with photovoltaic energy storage charging pile according to claim 1,
the interior of the prefabricated cabin adopts a single-side-by-side arrangement low-voltage power distribution cabinet and related cabinet bodies thereof; the cable sheath protection level meets IP67 and IP 65; the plug-and-play socket is prefabricated inside and outside the cabin;
an energy storage area, a diesel engine power generation area, a UPS equipment area, an ammeter area, a power distribution cabinet area and an informatization control area are arranged in the prefabricated cabin; each area is provided with a standard wiring groove and a standard wiring interface which are connected with secondary equipment in the cabin through optical cables;
connecting a multi-core outdoor prefabricated cable with external equipment;
a conductive copper bar and a cable trench are laid at the bottom of the prefabricated cabin and are used for grounding the prefabricated cabin and secondarily connecting a power distribution cabinet with external equipment;
and manufacturing the prefabricated cabin in a manufacturing plant according to the field and use requirements, transporting the manufactured prefabricated cabin to a construction field, and then butting and installing the prefabricated cabin with field primary equipment.
6. The prefabricated substation with photovoltaic energy storage charging pile according to claim 1,
the method comprises the steps that information control equipment obtains online electricity data of three-phase electricity before photovoltaic power generation is online;
judging whether the three-phase power grid online electricity data are matched with the power grid operation electricity data;
specifically, judging whether the three-phase power grid-connected electricity data is within a preset threshold range of the unbalance degree;
if the current grid-connected state is not within the preset threshold range, the grid-connected electricity data of the three-phase electricity before the current photovoltaic power generation grid-connected state is in an unbalanced state, and the current grid-connected state is turned off;
if the three-phase power is within the preset threshold range, judging that the three-phase power is in a balanced state before the photovoltaic power generation is on the internet, and controlling the photovoltaic power generation to be on the internet when the three-phase power is still in the balanced state after the preset time is continuously obtained.
7. The prefabricated substation with photovoltaic energy storage charging pile according to claim 1,
the information control equipment is also used for acquiring the operation data information of the energy storage device, the diesel engine generator, the UPS equipment, the low-voltage power distribution cabinet and the distributed photovoltaic power generation device; and judging whether the operation data information exceeds a threshold value, if so, alarming to a power grid server, and simultaneously cutting off the operation of corresponding equipment.
8. The prefabricated substation with photovoltaic energy storage charging pile according to claim 7,
if the range of the threshold value is not exceeded, respectively calling the past operation data information of the energy storage device, the diesel engine generator, the UPS equipment, the low-voltage power distribution cabinet and the distributed photovoltaic power generation device in the storage device for comparison;
and establishing an operation curve trend graph of the energy storage device, the diesel engine generator, the UPS equipment, the low-voltage power distribution cabinet and the distributed photovoltaic power generation device by using big data software, marking abnormal points, analyzing a critical point threshold value of data abnormality, judging whether current operation data information approaches the critical point threshold value or not, or whether the current operation data information continues to develop towards the critical point threshold value or not, and displaying the current operation data information.
9. The prefabricated substation with photovoltaic energy storage charging pile according to claim 1,
the informatization control equipment is also used for carrying out face recognition verification and identity verification on personnel entering the prefabricated cabin, and the personnel enter the prefabricated cabin after the verification is passed;
the power grid server stores face information and identity verification information of personnel having the authority to enter the prefabricated cabin, the information control equipment verifies the face information and the identity information of the personnel currently entering the prefabricated cabin by sending the face information and the identity information of the personnel currently entering the prefabricated cabin when verification is carried out, and the personnel can enter the prefabricated cabin after the verification is passed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276024A (en) * | 2022-09-26 | 2022-11-01 | 山东中奥电力设备有限公司 | Automatic scheduling system of electric power prefabricated cabin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276024A (en) * | 2022-09-26 | 2022-11-01 | 山东中奥电力设备有限公司 | Automatic scheduling system of electric power prefabricated cabin |
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