CN205753438U - A kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility - Google Patents
A kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility Download PDFInfo
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- CN205753438U CN205753438U CN201620001436.7U CN201620001436U CN205753438U CN 205753438 U CN205753438 U CN 205753438U CN 201620001436 U CN201620001436 U CN 201620001436U CN 205753438 U CN205753438 U CN 205753438U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
This utility model belongs to distributed photovoltaic electric station grid connection technical field, is specifically related to a kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility；Including distributed poverty alleviation photovoltaic plant, collect circuit, 10kV or 35kV public network transformer station, public network transformer station 10kV or 35kV bus, chopper, Microprocessor-based Current voltage protection, low-frequency and low-voltage disconnection device and photovoltaic plant computer supervisory control system that 10kV or 35kV public network transformer substation side is arranged；It is characterized in that:Photovoltaic plant computer supervisory control system is arranged in 10kV or 35kV public network transformer station, and photovoltaic plant computer supervisory control system is connected with distributed poverty alleviation photovoltaic plant.As a example by the photovoltaic plant of 1MW installed capacity, investment reduction accounts for about the 10% of whole photovoltaic plant investment, and owing to secondary device of being correlated with by photovoltaic plant is arranged in access public network transformer station, photovoltaic plant side is not provided with operations staff, greatly reduce the operating cost in later stage, add poverty alleviation photovoltaic plant profit.
Description
Technical field
This utility model belongs to distributed photovoltaic electric station grid connection technical field, is specifically related to a kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility.
Background technology
Development for poverty relief is national for fundamentally changing the socioeconomic backward situation in poverty-stricken area, reduces regional disparity, builds a well-off society in an all-round way, it is achieved a major action of the socialist modernization drive third phase of the strategic goal.At present, multiple poverty alleviation photovoltaic generation engineering is being built in western remote districts, and photovoltaic poverty alleviation opens development for poverty relief by " blood transfusion formula poverty alleviation " to the transformation of " accurate poverty alleviation ", it is achieved that diversified economy benefit combines with social benefit.
Distributed poverty alleviation photovoltaic plant installation scale is less, and general capacity is less than 6MW, and the site in power station is typically chosen in area, remote countryside, near power grid user, particularly rural power grids user side, Regional Distribution is more disperseed.Poverty alleviation photovoltaic plant some need to be used for local peasant household cash addition, therefore to power plant construction cost control the most strictly to ensure investor's rights and interests.The centralized photovoltaic plant of tradition is the reliability service ensureing electrical network, switchyard or booster stations need to be built at photovoltaic plant, connect-in strategy is invested relatively big, is unfavorable for carrying out of aid-the-poor project, proposes a kind of distributed poverty alleviation photovoltaic electric station grid connection scheme simple, reliable, investment saving and has practical significance.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of simple in construction, reliable, the distributed poverty alleviation in the west area photovoltaic electric station grid connection facility of investment saving.This facility should meet photovoltaic plant and access the regulation of power system, the most effectively reduces investment outlay, it is achieved the maximizing the benefits of photovoltaic aid-the-poor project.
This utility model solves above-mentioned technical problem and is adopted the technical scheme that: a kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility, including distributed poverty alleviation photovoltaic plant, collect circuit, 10kV or 35kV public network transformer station, public network transformer station 10kV or 35kV bus, chopper, Microprocessor-based Current voltage protection, low-frequency and low-voltage disconnection device and photovoltaic plant computer supervisory control system that 10kV or 35kV public network transformer substation side is arranged；It is characterized in that:Photovoltaic plant computer supervisory control system is arranged in 10kV or 35kV public network transformer station, and photovoltaic plant computer supervisory control system is connected with distributed poverty alleviation photovoltaic plant.
West area distributed poverty alleviation photovoltaic electric station grid connection facility in this utility model mainly includes:Photovoltaic plant, collect circuit, chopper, Microprocessor-based Current voltage protection, low-frequency and low-voltage disconnection device, 10kV or 35kV public network transformer station.Main Function is summarized as follows:
1, photovoltaic plant: convert the solar into low-voltage AC, boosts to 10kV or 35kV through box type transformer.
2, circuit is collected: Main Function is that the electric energy that the photovoltaic plant after boosting sends accumulates an electric power transmission line, and electric energy is delivered to public electric wire net transformer station.Collect circuit and be not provided with chopper in photovoltaic plant side.Collecting line form can be power cable, it is also possible to be aerial condutor.
3, Microprocessor-based Current voltage protection: generally syllogic, is installed in public network transformer station, and when collecting line failure, protection device detects that electric current raises, and when voltage reduction reaches its definite value, action tripping collects line-breaker, excises fault quickly, reliably.
4, low-frequency and low-voltage disconnection device: detection network system operating condition, when occurrence frequency, voltage reduce, action disconnects photovoltaic and collects line-breaker, and its movement time need to match with operating time of protection.
5, photovoltaic plant computer supervisory control system: realize the control function overall to photovoltaic plant.
Substantive distinguishing features of the present utility model is: first, and distributed poverty alleviation photovoltaic plant converts the solar into after low-voltage AC is followed by boosting to 10kV or 35kV electric pressure to box type transformer and collects, and forms 1 time 10kV or 35kV and collects circuit.
Second, collect circuit photovoltaic plant side and be not provided with chopper, collecting circuit is overhead transmission line or cable run, accesses public network transformer station 35kV or 10kV interval, only arranges 1 chopper in 10kV or 35kV public network transforming plant lead-in side.
3rd; poverty alleviation photovoltaic plant not Construction and operation control room; it is not provided with operator 10kV or 35kV public network transformer station in addition to the relevant secondary device such as Microprocessor-based Current voltage protection, low-frequency and low-voltage disconnection device is set, photovoltaic plant computer supervisory control system is also arranged in 10kV or 35kV public network transformer station.Operation information is sent to each dispatching terminal by public network transformer substation communication equipment by photovoltaic plant computer supervisory control system, to meet the needs that photovoltaic plant runs.
4th, collect line configuring Microprocessor-based Current voltage protection for photovoltaic plant, it is ensured that action accurately and rapidly collects, in chopper, excision, the fault that circuit occurs.Simultaneously as the restriction of photovoltaic plant short circuit current characteristic, configure low-frequency and low-voltage disconnection device for photovoltaic plant, strong supplementary as what network system was protected.Low-frequency and low-voltage disconnection device should reliably escape the movement time of protection movement time, when device detects that low frequency, low pressure occurs in system, and device action, tripping chopper, both ensure photovoltaic plant internal unit safety, also ensure that the safe and stable operation of electrical network.
Owing to western remote districts mostly are barren beach, Gobi desert, the siting of station of distributed poverty alleviation photovoltaic plant is more, it should on the premise of meeting related request, selects near access conditions preferable public network 35kV or 10kV transformer station as far as possible, collect line length to shorten, reduce and send loss.
This utility model is reduced investment outlay size estim ate: collects line outlet side and reduces chopper 1, investment reduction about 100,000 yuan；Collect line outlet side minimizing Microcomputer Protection equipment a set of, investment reduction about about 100,000 yuan；Photovoltaic plant cancels the relevant auxiliary equipment such as Operational Control Room, investment reduction about about 500,000 yuan.More than add up to investment reduction about 700,000 yuan.As a example by the photovoltaic plant of 1MW installed capacity, investment reduction accounts for about the 10% of whole photovoltaic plant investment, and owing to secondary device of being correlated with by photovoltaic plant is arranged in access public network transformer station, photovoltaic plant side is not provided with operations staff, greatly reduce the operating cost in later stage, add poverty alleviation photovoltaic plant profit.
Accompanying drawing explanation
Fig. 1 is overall structural arrangement schematic diagram of the present utility model；
Fig. 2 is photovoltaic electric station grid connection structural representation under usual manner.
In figure: 1 distributed poverty alleviation photovoltaic plant; 2 collect circuit; 3 10kV or 35kV public network transformer stations; 4 public network transformer station 10kV or 35kV bus; 5 choppers, 501 photovoltaic plant side choppers, 6 Microprocessor-based Current voltage protections; 7 low-frequency and low-voltage disconnection devices, 8 photovoltaic plant computer supervisory control systems.
Detailed description of the invention
As shown in Figure 1: a kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility, including distributed poverty alleviation photovoltaic plant 1, collect circuit 2,10kV or 35kV public network transformer station 3, public network transformer station 10kV or 35kV bus 4, chopper 5, Microprocessor-based Current voltage protection 6, low-frequency and low-voltage disconnection device 7 and photovoltaic plant computer supervisory control system 8 that 10kV or 35kV public network transformer substation side is arranged；It is characterized in that:Photovoltaic plant computer supervisory control system 8 is arranged in 10kV or 35kV public network transformer station 3, and photovoltaic plant computer supervisory control system 8 is connected with distributed poverty alleviation photovoltaic plant 1.
The distributed poverty alleviation photovoltaic electric station grid connection facility of prior art sees Fig. 2, with of the present utility model not existing together it is: photovoltaic plant computer supervisory control system 8 is arranged on distributed poverty alleviation photovoltaic plant 1 side, so, distributed poverty alleviation photovoltaic plant 1 is built Operational Control Room, photovoltaic plant computer supervisory control system 8 is installed to Operational Control Room, the construction investment of existing Operational Control Room, distributed poverty alleviation photovoltaic plant 1 follow-up operation also needs to arrange operator at Operational Control Room, and distributed poverty alleviation photovoltaic plant 1 outlet side needs to arrange photovoltaic plant side chopper 501.All in all, the distributed poverty alleviation photovoltaic electric station grid connection facility of prior art increases investment about 700,000 yuan than this utility model.
Claims (1)
1. the distributed poverty alleviation in a west area photovoltaic electric station grid connection facility, including distributed poverty alleviation photovoltaic plant, collect circuit, 10kV or 35kV public network transformer station, public network transformer station 10kV or 35kV bus, chopper, Microprocessor-based Current voltage protection, low-frequency and low-voltage disconnection device and photovoltaic plant computer supervisory control system that 10kV or 35kV public network transformer substation side is arranged；It is characterized in that:Photovoltaic plant computer supervisory control system (8) is arranged in 10kV or 35kV public network transformer station (3), and photovoltaic plant computer supervisory control system (8) is connected with distributed poverty alleviation photovoltaic plant (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620001436.7U CN205753438U (en) | 2016-01-04 | 2016-01-04 | A kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620001436.7U CN205753438U (en) | 2016-01-04 | 2016-01-04 | A kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility |
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| CN205753438U true CN205753438U (en) | 2016-11-30 |
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| CN201620001436.7U Active CN205753438U (en) | 2016-01-04 | 2016-01-04 | A kind of distributed poverty alleviation in west area photovoltaic electric station grid connection facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463835A (en) * | 2020-04-17 | 2020-07-28 | 湖南工业大学 | Method for obtaining maximum planned grid-connected capacity of distributed wind power under 10KV-35KV power grid |
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2016
- 2016-01-04 CN CN201620001436.7U patent/CN205753438U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463835A (en) * | 2020-04-17 | 2020-07-28 | 湖南工业大学 | Method for obtaining maximum planned grid-connected capacity of distributed wind power under 10KV-35KV power grid |
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