CN112018890B - Modularized prefabricated cabin type 110kV photovoltaic collection station for high-altitude areas - Google Patents
Modularized prefabricated cabin type 110kV photovoltaic collection station for high-altitude areas Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 claims abstract description 40
- 238000012423 maintenance Methods 0.000 claims abstract description 18
- 238000010248 power generation Methods 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 24
- 238000004904 shortening Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/01—Earthing arrangements, e.g. earthing rods
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/40—Mobile PV generator systems
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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
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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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
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a modularized prefabricated cabin type 110kV photovoltaic collection station for a high-altitude area, which comprises a photovoltaic power generation module, a power distribution integrated prefabricated cabin, a secondary equipment prefabricated cabin, a monitoring prefabricated cabin, a 110kV power distribution device and a main transformer, wherein the photovoltaic power generation module is connected with the power distribution integrated prefabricated cabin through a direct-current cabinet and an inverter which are sequentially connected, the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin are respectively connected with the main transformer, the power distribution integrated prefabricated cabin is connected with the secondary equipment prefabricated cabin, an integrated 35kV power distribution device, an integrated 35kV SVG equipment control cabinet and a power cabinet are arranged in the power distribution integrated prefabricated cabin, secondary equipment is arranged in the secondary equipment prefabricated cabin, and equipment and operation and maintenance personnel monitoring working areas are arranged in the monitoring prefabricated cabin. Compared with the prior art, the invention has the advantages of shortening the engineering construction period, improving the construction efficiency and the like.
Description
Technical Field
The invention relates to the technical field of photovoltaic collection stations, in particular to a modularized prefabricated cabin type 110kV photovoltaic collection station for a high-altitude area.
Background
With the rapid increase of urban electricity load, new substations and photovoltaic collection stations are built in urban centers, and power sources are led to the urban periphery through high-voltage cables, so that the urban electricity collection station is an urgent problem faced by the supply of many economically developed urban electric power in China. However, the existing construction of the transformer substation and the photovoltaic collection station generally has the problem of difficult landing, mainly because of the shortage of land resources of each land, the construction land of the transformer substation and the photovoltaic collection station is difficult to be drawn out. And the construction of the traditional transformer substation and the photovoltaic collection station is generally in a civil engineering mode, the construction and construction on site are needed, and the defects of long construction period, large influence on the surrounding environment, large occupied area and the like exist.
For high altitude areas, the construction of transformer substations and photovoltaic collection stations also needs to consider factors such as altitude, complex geological conditions, extreme environmental conditions and the like, and certain areas do not have good building conditions, in order to ensure that the photovoltaic collection stations in the high altitude areas are stably constructed, the mode adopted at present is still a civil engineering technology, a large number of peripheral matched projects are needed, the construction period is long, the construction period is short, the construction efficiency is low, the protection technology of equipment is not perfect, and the space utilization rate of the photovoltaic collection stations is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the modularized prefabricated cabin type 110kV photovoltaic collection station for the high-altitude area, which adopts the modularized design, can meet the requirements of the high-altitude area with complicated geological conditions, can obviously shorten the engineering construction period, improve the construction efficiency, and provide reliable guarantee for equipment protection power supply and control system of the whole photovoltaic collection station.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides a modularization prefabricated cabin formula 110kV photovoltaic collection station for high altitude area, includes photovoltaic power generation module, the prefabricated cabin of distribution, the prefabricated cabin of secondary equipment, control prefabricated cabin, 110kV distribution equipment, main transformer and dispatch data network module, 110kV distribution equipment adopts outdoor equipment formula equipment, outdoor basis is located to the main transformer, photovoltaic power generation module is connected with the prefabricated cabin of distribution through the collection flow box that connects gradually, direct current cabinet and dc-to-ac converter, the prefabricated cabin of distribution, the prefabricated cabin of secondary equipment, control prefabricated cabin are connected with the main transformer respectively, the prefabricated cabin of distribution is connected with the prefabricated cabin of secondary equipment, be equipped with integrated 35kV distribution equipment, 35kV SVG equipment control cabinet and power cabinet in the prefabricated cabin of distribution, 35kV SVG equipment control cabinet and power cabinet are connected with 35kV distribution equipment, be equipped with secondary equipment in the prefabricated cabin of secondary equipment, the prefabricated cabin of control is provided with equipment and operation maintenance personnel control work area, the prefabricated cabin of control is connected with the dispatch main website through the dispatch data network module.
Further, the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin are respectively provided with an integrated skid-mounted base.
Further, outdoor fences are arranged around the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin respectively.
Further, the 35kV grounding transformer, the grounding resistor, the starting device and the reactor are arranged outside the power distribution integrated prefabricated cabin and in front of the corresponding outdoor fence, and the starting device is connected with secondary equipment in the secondary equipment prefabricated cabin.
Further, the 35kV power distribution device adopts an air armoured switch cabinet, and the air armoured switch cabinet, the 35kV SVG equipment control cabinet and the power cabinet are integrated in a factory.
Further, the 110kV power distribution device adopts a wiring form of a line transformer group with a circuit breaker, and the photovoltaic incoming lines are shared.
Further, the 35kV power distribution device adopts a single bus wiring mode, and six photovoltaic incoming lines are formed.
Further, the equipment and operation and maintenance personnel monitoring working area is provided with an equipment monitoring platform and an operation and maintenance personnel living space, and the equipment monitoring platform generates a scheduling requirement file according to weather forecast files, environment detector data, geological complexity conditions and output conditions of the photovoltaic collecting station obtained through an external network and sends the scheduling requirement file to a scheduling master station through a scheduling data network module.
Further, the 35kV SVG equipment control cabinet performs reactive power compensation by hanging the SVG switch cabinet on a 35KV bus, and the compensation capacity is + -25000 kVar.
Further, the neutral point of the main transformer at the 110kV side is directly grounded through a grounding disconnecting link, and the neutral point at the 35kV side is grounded through a small resistor.
Compared with the prior art, the modularized prefabricated cabin type 110kV photovoltaic collection station for the high-altitude area provided by the invention at least has the following beneficial effects:
1) The invention is provided with the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin in a modularized manner, and the three prefabricated cabins can be distributed in different places according to the regional conditions of the high altitude and the complicated geological conditions, so that the requirements of the high altitude areas with the complicated geological conditions are met;
2) Each prefabricated cabin is provided with an integrated skid-mounted base, so that the assembly is quick and movable; the photovoltaic collection station adopts a modularized prefabricated cabin design, has the characteristics of compact structure, strong complete set, portability and repeated use, and meanwhile, has complete protection functions and high power supply reliability; the skid-mounted photovoltaic collection station can be disassembled into a plurality of modules for transportation, can be moved for reuse, is suitable for the requirement of rolling development, and improves the space utilization rate of the photovoltaic collection station.
3) The photovoltaic collecting station can assemble each prefabricated cabin on site and perform external wiring, so that the workload of peripheral matched engineering is greatly reduced, and the engineering construction period is shortened.
4) The equipment and the operation and maintenance personnel monitoring working area are arranged in the monitoring prefabricated cabin, so that the construction efficiency can be improved for high-altitude areas with complicated geology, and the construction period is further shortened.
5) The 35kV power distribution device, the 35kV SVG equipment control cabinet and the power cabinet are integrated in the power distribution integrated prefabricated cabin in a factory preassembled mode, and accordingly installation of corresponding control components is facilitated to be debugged.
6) 110KV distribution unit adopts the circuit transformer group wiring form of taking the circuit breaker, and the photovoltaic inlet wire of sharing, 35kV distribution unit adopts single busbar mode of connection, and six photovoltaic inlet wires altogether, and 35kV SVG equipment control cabinet can carry out reactive compensation, provides reliable assurance to equipment protection power, the control system of whole photovoltaic collection station.
7) The equipment and operation and maintenance personnel monitoring working area is arranged in the monitoring prefabricated cabin, the equipment and operation and maintenance personnel monitoring working area is provided with an equipment monitoring platform and an operation and maintenance personnel living space, and the equipment monitoring platform can generate a scheduling requirement file according to weather forecast files, environment detector data, geological complexity conditions and output conditions of the photovoltaic collection station, which are acquired through an external network, and the scheduling requirement file is uploaded to a scheduling master station end, so that the operation and maintenance personnel and the scheduling master station end can conveniently maintain, check and monitor real-time construction and operation conditions of the photovoltaic collection station.
Drawings
Fig. 1 is a schematic plan view of each prefabricated cabin of a modular prefabricated cabin type 110kV photovoltaic collection station for a high altitude area in an embodiment.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Examples
The invention relates to a modularized prefabricated cabin type 110kV photovoltaic collection station for a high-altitude area, which is applicable to the high-altitude area with complex geology, such as an area with characteristics of a subsidence area and the like.
The photovoltaic collection station comprises a photovoltaic power generation module, a power distribution integrated prefabricated cabin, a secondary equipment prefabricated cabin, a monitoring prefabricated cabin, a dispatching data network module, an outdoor fence, a 110kV power distribution device, a main transformer, a 35kV power distribution device, a 110kV power distribution device, secondary equipment, a starting device, a reactor, a 35kV grounding transformer and grounding resistor which are arranged in a complete set, a 35kV SVG equipment control cabinet and a power cabinet.
The photovoltaic power generation module comprises a solar panel, a panel support and a solar panel, wherein the solar panel is used for generating electricity, the solar panel is fixed on the panel support, and the inclination angle, the height and the depth of the panel support in the ground are determined according to the specific local situation. The solar cell panel is connected with the power distribution integrated prefabricated cabin through the junction box, the direct current cabinet and the inverter which are connected in sequence. The junction box is provided with a communication module.
Preferably, the solar panel uses polysilicon, or a thin film photovoltaic panel. The light energy is fully converted into electrical energy, typically at a voltage of DC12V per panel. The battery board bracket is made of galvanized square steel and has the main function of fixing the battery board. The inclination angle of the panel bracket is preferably 30 degrees.
The power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin can be distributed in different places according to the conditions of areas with complex high altitude and geological conditions. Each prefabricated cabin is provided with an integrated skid-mounted base, so that the assembly is quick and movable.
The outdoor fence is arranged around the areas where the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin are located respectively, plays roles of protection and protection, and an insulating protection fence is preferably used. In actual use, the glass fiber reinforced plastic guardrail can be adopted, is light in weight and convenient to install, does not need welding, is strong in corrosion resistance, does not rust, does not need maintenance after long-term use, can further reduce cost and saves construction time.
And the 110kV power distribution devices all adopt outdoor assembly type equipment. The 35kV power distribution device adopts an air armoured switch cabinet and is integrally installed in a power distribution integrated prefabricated cabin. The 35kv power distribution device is mainly a combined electrical appliance and mainly comprises a 35kv side breaker, a mechanism box, isolation equipment and the like, and has the functions of isolation, disconnection and the like.
The 35kV grounding transformer and the grounding resistor are arranged in an outdoor fence outside the power distribution integrated prefabricated cabin by adopting a complete device; the 35kV SVG equipment control cabinet and the power cabinet are integrated in the power distribution integrated prefabricated cabin and are connected with a 35kV power distribution device. The 35kV SVG equipment control cabinet has the function of dynamic reactive power compensation, and the compensation capacity is + -25000 kVar by hanging the SVG equipment control cabinet on a 35KV bus.
The starting device and the reactor are arranged in an outdoor fence outside the power distribution integrated prefabricated cabin. The secondary equipment is arranged in the secondary equipment prefabricated cabin in a centralized mode. And a starting device in the power distribution integrated prefabricated cabin is connected with secondary equipment of the secondary equipment prefabricated cabin.
The equipment and operation and maintenance personnel monitoring working area is arranged in the monitoring prefabricated cabin. The equipment and operation and maintenance personnel monitoring working area comprises an equipment monitoring platform and an operation and maintenance personnel living space, wherein the equipment monitoring platform is used for generating a scheduling requirement file according to weather forecast files, environment detector data, geological complexity conditions and output conditions of the photovoltaic collecting station obtained through an external network and sending the scheduling requirement file to a scheduling master station end. The photovoltaic collection station is convenient for operation and maintenance personnel and a dispatching master station to maintain, check and monitor the real-time construction and the operation condition of the photovoltaic collection station.
The dispatching data network module is used for connecting the 110kv photovoltaic collecting station with the dispatching master station and comprises equipment such as a real-time switch, a non-real-time switch or a router. The equipment monitoring platform is connected with the dispatching master station end through the dispatching data network module.
The main transformer of the photovoltaic collection station adopts a natural air cooling integrated main transformer which is arranged on an outdoor foundation and is used for raising the voltage from 35KV to 110KV. The power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin are arranged around the main transformer and are respectively connected with the main transformer.
The wiring form of the transformer substation is as follows, and reliable guarantee is provided for a power supply and a control system of equipment protection of the whole photovoltaic collecting station.
Main transformer capacity: 1X 100MVA;
110kV system: the line transformer group with a breaker is connected with the line, and the line is fed back by 1;
35kV system: a single bus is connected, and 6 times of photovoltaic incoming wires are added;
Reactive compensation: adopting SVG equipment, wherein the compensation capacity is + -25000 kVar;
Grounding system: the neutral point of the 110kV side of the main transformer of the 110kV photovoltaic collection station is directly grounded through a grounding disconnecting link, and the 35kV side is grounded through a small resistor.
In this embodiment, as a preferred solution, the 35kV distribution device employs an air armoured switchgear that enables integration of the cabinet within the plant. The secondary equipment centralized screen assembly is installed in the secondary equipment prefabricated cabin.
In this embodiment, as another preferable scheme, the main transformer, the power distribution integrated prefabricated cabin and the secondary equipment prefabricated cabin of the photovoltaic collection station can be installed on the same skid-mounted base, and the three components form an integrated skid-mounted structure, so that the structure is more compact, and the modularization degree of the photovoltaic collection station is increased.
Compared with the construction technology of the photovoltaic collection station which is unified and needs a large number of peripheral matched projects in the existing civil engineering technology, the invention provides the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin which are arranged in a modularized mode, the three prefabricated cabins can be arranged in different sections, and the areas with high altitude and complicated geological conditions can be met through modularized design. All the prefabricated cabins are assembled on site and externally connected, so that the workload of peripheral matched engineering is greatly reduced, and the engineering construction period is shortened. The prefabricated cabin type design has the characteristics of compact structure, strong complete set, portability and repeated use; meanwhile, the protection function is complete, and the power supply reliability is high. The equipment and the operation and maintenance personnel monitoring working area are arranged in the monitoring prefabricated cabin, so that the construction efficiency can be improved and the construction period can be further shortened for high-altitude areas with complicated geology.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (1)
1. The modularized prefabricated cabin type 110kV photovoltaic collection station for the high-altitude area is characterized by comprising a photovoltaic power generation module, a power distribution integrated prefabricated cabin, a secondary equipment prefabricated cabin, a monitoring prefabricated cabin, a 110kV power distribution device, a main transformer and a dispatching data network module, wherein the 110kV power distribution device adopts outdoor equipment, the main transformer is arranged on an outdoor foundation, the photovoltaic power generation module is connected with the power distribution integrated prefabricated cabin through a junction box, a direct current cabinet and an inverter which are sequentially connected, the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin are respectively connected with the main transformer, the power distribution integrated prefabricated cabin is connected with the secondary equipment prefabricated cabin, an integrated 35kV power distribution device, a 35kV SVG equipment control cabinet and a power cabinet are arranged in the power distribution integrated prefabricated cabin, the 35kV SVG equipment control cabinet and the power cabinet are connected with the 35kV power distribution device, secondary equipment is arranged in the secondary equipment prefabricated cabin, equipment and an operation and maintenance personnel monitoring working area are arranged in the monitoring prefabricated cabin, and the monitoring prefabricated cabin is connected with a dispatching data network module;
the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin are respectively provided with an integrated skid-mounted base;
outdoor fences are respectively arranged around the power distribution integrated prefabricated cabin, the secondary equipment prefabricated cabin and the monitoring prefabricated cabin;
The outdoor fence is characterized in that a 35kV grounding transformer, a grounding resistor, a starting device and a reactor are arranged outside the power distribution integrated prefabricated cabin and in front of the outdoor fence corresponding to the power distribution integrated prefabricated cabin, and the starting device is connected with secondary equipment in the secondary equipment prefabricated cabin;
the 35kV power distribution device adopts an air armoured switch cabinet, and the air armoured switch cabinet, a 35kV SVG equipment control cabinet and a power cabinet are integrated in a factory;
The 110kV distribution device adopts a wiring form of a line transformer group with a circuit breaker, and shares one photovoltaic incoming line;
The 35kV power distribution device adopts a single bus wiring mode, and six photovoltaic incoming lines are adopted;
The equipment and operation and maintenance personnel monitoring working area is provided with an equipment monitoring platform and an operation and maintenance personnel living space, and the equipment monitoring platform generates a scheduling requirement file according to weather forecast files, environment detector data, geological complexity conditions and output conditions of the photovoltaic collecting station obtained through an external network and sends the scheduling requirement file to a scheduling master station through a scheduling data network module;
The 35kV SVG equipment control cabinet performs reactive power compensation by hanging the SVG switch cabinet on a 35KV bus, wherein the compensation capacity is + -25000 kVar;
the neutral point of the main transformer at the 110kV side is directly grounded through a grounding disconnecting link, and the main transformer at the 35kV side is grounded through a small resistor.
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| CN202010875847.XA CN112018890B (en) | 2020-08-27 | 2020-08-27 | Modularized prefabricated cabin type 110kV photovoltaic collection station for high-altitude areas |
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| CN202010875847.XA CN112018890B (en) | 2020-08-27 | 2020-08-27 | Modularized prefabricated cabin type 110kV photovoltaic collection station for high-altitude areas |
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| CN112018890B true CN112018890B (en) | 2024-04-19 |
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| CN114843919B (en) * | 2021-02-02 | 2024-06-25 | 中国石油天然气集团有限公司 | Preassembled transformer substation |
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