CN112202190A - Station power consumption screen and distributed station power consumption system based on energy storage station - Google Patents
Station power consumption screen and distributed station power consumption system based on energy storage station Download PDFInfo
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- CN112202190A CN112202190A CN202011230921.9A CN202011230921A CN112202190A CN 112202190 A CN112202190 A CN 112202190A CN 202011230921 A CN202011230921 A CN 202011230921A CN 112202190 A CN112202190 A CN 112202190A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 51
- 238000002955 isolation Methods 0.000 claims abstract description 22
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/03—Boards, panels, desks; Parts thereof or accessories therefor for energy meters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to an alternating current incoming screen cabinet for a transformer substation and application thereof, in particular to a station power screen based on an energy storage station and a distributed station power system, wherein the station power screen comprises a watt-hour meter, a plurality of feeder line circuit breakers, an ATS switching device, two groups of incoming line circuit breakers and an isolation transformer, wherein the watt-hour meter, the feeder line breakers, the ATS switching device, the two groups of incoming line circuit breakers and the isolation transformer are arranged in the screen cabinet body from top to bottom in sequence, power lines of two groups of alternating current 380V are respectively connected into the two groups of incoming line circuit breakers, then the isolation transformer is connected into an output end of the ATS switching device, and an output end of. The distributed power station power utilization system is characterized in that two power utilization screens are arranged in each load area according to the load distribution of the energy storage stations, each power supply screen is powered by 2 sections of energy storage 380V bus bars which are different from one feeder line, and the power inlet wire of each group of two power supply screens is taken from different feeder line loops. The invention has the advantages that: the occupied area is reduced, the engineering investment and the construction cost are effectively reduced, the reliability is improved, and the modularization of the station power utilization screen is realized.
Description
Technical Field
The invention relates to an alternating current incoming screen cabinet for power utilization of a transformer substation and application thereof, in particular to a station power utilization screen based on an energy storage station and a distributed station power utilization system.
Background
The station power consumption system that present energy storage station adopted is mostly conventional transformer substation station power consumption system, and the main connection is as shown in figure 1: the high-voltage power supply system comprises a plurality of power supply main screens, wherein high-voltage power (10 kV, 35kV, 110kV and the like) is converted into 380V voltage by using 2 station transformers as a group in a station, then the high-voltage power supply main screens are respectively connected into one station power supply alternating current incoming screen in two paths, one station power supply alternating current incoming screen is connected into one station power supply main screen after the station power supply alternating current incoming screen is switched through an ATS device, and finally a plurality of station power supply sub screens arranged according to the construction scale of a transformer substation are divided into two groups and are respectively connected into two paths of power supplies after the two paths of power supplies are respectively switched through the ATS from the.
The station power system needs to use the following three station power screens:
1) station power consumption exchanges inlet wire screen: the system comprises an AC inlet switch, an ATS switching device, an AC controller, an electric meter, a mutual inductor, a monitoring meter and the like. One side of the transformer is connected, and the output of the transformer is connected with the power feeder main screen for the station.
2) Station power feeder main screen: it contains several large rated current plastic shell breakers and ordinary breakers. The station electrical ac inlet screen and the station electrical feeder main screen are typically disposed in a common secondary equipment room.
3) Splitting a screen by using an electric feeder for a station: a plurality of common circuit breakers are contained. Are generally disposed in relay cubicles, distribution equipment cubicles, etc., in the vicinity of the electric loads, and serve as branches of the main screens of the station electric feeders. The main screen and the sub-screen of the station electric feeder are connected through a large-section power cable.
The defects of the technology are as follows:
1) the power access of the station power system adopts a centralized wiring mode, the station transformer-to-station power system alternating current incoming line screen is only a dual-line mutual standby access, the maximum station power system capacity can reach 2500kVA according to the scale of a transformer substation, incoming line currents are 130A-6600A, therefore, corresponding open circuit and ATS rated currents are large, the cross sections of cables and conductors are large, an independent external station transformer and an independent station power alternating current incoming line screen need to be arranged, a large floor area is needed, the whole area of an energy storage station is difficult to compress due to the large floor area, and particularly in urban areas.
2) The large-capacity station transformer, the station electric alternating current inlet screen and the large-section power cable required by the station electric alternating current inlet screen need great engineering investment and construction cost.
3) The centralized wiring manner results in low reliability. Because the total station power consumption only passes through a set of (two sides) station power consumption alternating current inlet wire screen and inserts, once inlet wire return circuit trouble, then face the risk of total station power failure.
Disclosure of Invention
The invention aims to provide the station power utilization screen and the distributed station power utilization system based on the energy storage station, which have the advantages of small occupied area, effective reduction of engineering investment and construction cost and reliability improvement according to the defects of the prior art.
The station power consumption screen based on the energy storage station is realized by the following ways:
station power consumption screen based on energy storage station, including the screen cabinet body, its structural feature lies in: the power line of two groups of alternating current 380V are respectively connected into the two groups of incoming line circuit breakers, and the two groups of incoming line circuit breakers are access switches of the ATS switching device; the output end of the ATS switching device is connected with the input end of an isolation transformer, the output end of the isolation transformer is connected to an alternating current output feeder line through a watt-hour meter, and the access ends of the feeder line breakers are respectively connected to the alternating current output feeder line.
The distributed station power utilization system based on the energy storage station is realized by the following ways:
distributed station power consumption system based on energy storage station, its main points lie in, includes following constitution:
1) each section of energy storage feeder line is connected with a plurality of sections of energy storage 380V bus bars, and each section of bus bar provides two AC 380V power supply connection points;
2) providing a plurality of station power consumption screens, wherein each load area is provided with two side station power consumption screens according to the load distribution of the energy storage station, and each access end of the load area gets electricity through a plurality of feeder line circuit breakers connected to the station power consumption screens;
3) power lines of the electric screens for the two stations in the same load area are respectively connected to different sections of energy storage feeder lines; two groups of incoming line breakers of each station power utilization screen are respectively connected to an alternating current 380V power supply output point of different sections of energy storage 380V bus bars under the same section of energy storage feeder line through power lines.
Therefore, the invention cancels the station transformer, the station power alternating current incoming screen, the station power feeder main screen and the split screen, changes the original centralized wiring scheme into a distributed wiring mode, adopts the energy storage 380V bus bar to directly provide power for each load area through a plurality of novel station power screens which are distributed, has the capacity of the novel station power screens which are distributed dispersedly according to the power requirement of the load area generally not more than 50kVA, and has the rated current not more than 130A, thereby having the condition of integrated cabinet combination, being capable of realizing the integration of the isolation transformer, the ATS, the incoming line circuit breaker and the feeder circuit breaker with small capacity and small volume in the same cabinet body, effectively avoiding the use of equipment with high capacity and high rated power parameters, namely reducing the use amount of large-section power cables, also reducing the occupied area, and greatly reducing the engineering investment and the construction cost; in addition, each load area is independently supplied with power in a distributed mode, the electric screens for the two stations in the same load area are taken from the bus bars under different sections of energy storage feeders, and the two power inlet wires of the electric screen for the same station are also taken from the different bus bars under the same energy storage feeder, so that the power supply reliability is greatly improved.
The invention may further be embodied as:
the capacity specifications of the station electric screen comprise 30kVA and 50 kVA.
The existing centralized wiring needs to design each incoming screen, main screen and split screen according to the total load required by near-far construction of the energy storage station, so that production needs to be carried out according to the existing design, the production period is long, and each incoming screen and main screen are difficult to change and adapt once the load changes. The distributed power system for the station can fix the capacity of the power screen of the station according to the scale of the existing running energy storage power station and the condition of each single load, and the capacity is set to be two specifications of 30kVA and 50kVA, so that the power screen of the station can be modularized, the batch production is realized, the supply period is greatly shortened, the construction efficiency is improved, various load changes can be flexibly coped with, and the adaptability is strong.
In summary, the present invention provides a station power utilization screen and a distributed station power utilization system based on an energy storage station, which changes the original centralized wiring scheme into a distributed wiring manner, and the technical effects are as follows:
1) the transformer for the high-voltage station and the matched high-voltage switch cabinet or AIS circuit breaker, isolating switch and the like are eliminated, so that the occupied area is saved, and the equipment investment is greatly reduced.
2) And distributed power supply is adopted, so that the consumption of large-section power cables is reduced, and the construction cost and the construction time are saved.
3) By adopting the distributed power supply system, the original main split screen mode is reduced, the risk of power failure of the whole station caused by the fault of the station power utilization incoming screen or the station power utilization main screen is avoided, the power failure risk is regionalized, and the power supply reliability in the station can be greatly improved.
4) The station power supply is supplied with power by the inversion of the energy storage equipment, the station power supply grade is improved to the UPS power supply grade from the original commercial power grade, the station power screens are mutually independent, the risk of the whole system is greatly reduced, and the reliability and the safety of the station power supply are greatly improved.
Drawings
Fig. 1 is a schematic system structure diagram of a conventional station power system using centralized wiring according to the background art of the present invention.
FIG. 2 is a schematic structural diagram of a station power utilization screen based on an energy storage station according to the invention;
FIG. 3 is a schematic diagram of the wiring principle of the station power utilization screen based on the energy storage station;
fig. 4 is a schematic system structure diagram of the distributed station power utilization system based on the energy storage station.
The present invention will be further described with reference to the following examples.
Detailed Description
The best embodiment is as follows:
referring to the attached figures 2-3, the station electricity utilization screen based on the energy storage station comprises a screen cabinet body, an electric meter 1, a plurality of feeder line circuit breakers 2, an ATS switching device 3, two groups of incoming line circuit breakers 4 and an isolation transformer 5, wherein the electric meter 1, the feeder line circuit breakers 2, the ATS switching device 3, the two groups of incoming line circuit breakers 4 and the isolation transformer 5 are arranged in the screen cabinet body from top to bottom in sequence; the output end of the ATS switching device 3 is connected with the input end of an isolation transformer 5, the output end of the isolation transformer 5 is connected to an AC output feeder AC380/220V of a load area through a watt-hour meter 1, and the access ends of the feeder circuit breakers 2 are respectively connected to the AC output feeder AC 380/220V.
One design scheme for providing a station power screen is as follows:
1. the size of the screen cabinet is as follows: due to the size limitation of the secondary screen cabinet of the energy storage station, the size of the screen cabinet body of the electric power source for the station is designed to be 2260 x 800 x 600mm (height x length x width).
2. Equipment and arrangement in the cabinet:
three-phase isolation transformer: because the energy storage equipment is provided with the DC/AC conversion device which contains 3 times of characteristic harmonic waves and high-frequency characteristic harmonic waves, in order to ensure the electric energy quality of a station power system, a delta/Y three-phase isolation transformer needs to be arranged in each power supply panel. According to the general size of the isolation transformer, considering the length and width limitation of the screen cabinet, the capacity of the isolation transformer adopts two types of 30kVA and 50kVA, and the size of the transformer is 650 x 550 x 280mm or 650 x 610 x 300mm (height x length and width).
An incoming line breaker: with a frame type structure, the current selects a 30kVA configuration 63A frame type circuit breaker and a 50kVA configuration 100A frame type circuit breaker according to the capacity of the transformer. The frame circuit breaker supports electric operation.
Feeder circuit breaker: the feeder circuit breaker can be selectively provided with 16A-63A ordinary circuit breakers of which the number is not more than 18 according to load requirements.
Electric meter: 2 kilowatt-hour meters are arranged, and 1 kilowatt-hour meter is arranged for each feedback line.
Electric meter: 2 kilowatt-hour meters are arranged, and 1 kilowatt-hour meter is arranged for each feedback line.
3. Wiring in the cabinet: the energy storage 380V bus bar is connected with two paths of three-phase alternating-current power supplies in a leading mode, the three-phase alternating-current power supplies are connected into the ATS device after being opened in an air mode through the incoming line, and the three-phase alternating-current power supplies are connected into the isolation transformer after being switched. The kilowatt-hour meter is installed on the load side of the bulkhead transformer. The specific wiring is shown in fig. 3.
Based on the station power utilization screen, the distributed station power utilization system based on the energy storage station comprises the following components:
1) each section of energy storage feeder line is connected with a plurality of sections of energy storage 380V bus bars CM, and each section of bus bar provides two AC 380V power supply connection points;
2) providing a plurality of station power consumption screens, wherein two station power consumption screens are arranged in each load area to form a group according to the load distribution of the energy storage station, and each access end of the load area gets electricity through a plurality of feeder line circuit breakers connected to the station power consumption screens;
3) power lines of the electric screens for the two stations in the same load area are respectively connected to different sections of energy storage feeder lines; two groups of incoming line breakers of each station power utilization screen are respectively connected to an alternating current 380V power supply output point of different sections of energy storage 380V bus bars under the same section of energy storage feeder line through power lines.
4) The station power supply screens are distributed according to the load size and the load and are configured in groups in a partitioning mode, and each group is provided with 30kVA or 50kVA station power supply screens on two sides. The power supply screen is internally provided with an isolation transformer, an ATS switch, a metering gauge, a feeder circuit breaker and the like. Each power supply screen is powered by 2 different sections of energy storage 380V bus bars of the same feeder line, and power is supplied after ATS switching. And the power inlet wires of each group of the two-sided power supply panel are taken from different feeder circuits.
The parts of the invention not described are the same as the prior art.
Claims (4)
1. Station power consumption screen based on energy storage station, including the screen cabinet body, its characterized in that: the power line of two groups of alternating current 380V are respectively connected into the two groups of incoming line circuit breakers, and the two groups of incoming line circuit breakers are access switches of the ATS switching device; the output end of the ATS switching device is connected with the input end of an isolation transformer, the output end of the isolation transformer is connected to an alternating current output feeder line through a watt-hour meter, and the access ends of the feeder line breakers are respectively connected to the alternating current output feeder line.
2. Distributed station power utilization system based on energy storage station, characterized by, include the following composition:
1) each section of energy storage feeder line is connected with a plurality of sections of energy storage 380V bus bars, and each section of bus bar provides two AC 380V power supply connection points;
2) providing a multi-surface station power utilization screen, wherein each surface station power utilization screen comprises a screen cabinet body, a watt-hour meter, a plurality of feeder line circuit breakers, an ATS switching device, two groups of incoming line circuit breakers and an isolation transformer, wherein the watt-hour meter, the feeder line circuit breakers, the ATS switching device, the two groups of incoming line circuit breakers and the isolation transformer are arranged in the screen cabinet body from top to bottom in sequence; the output end of the ATS switching device is connected with the input end of an isolation transformer, the output end of the isolation transformer is connected to an alternating current output feeder line through a watt-hour meter, and the access ends of the feeder line breakers are respectively connected to the alternating current output feeder line;
3) according to the load distribution of the energy storage station, each load area is provided with two side station power utilization screens, and each access end of the load area gets power through a plurality of feeder line circuit breakers connected to the station power utilization screens;
4) power lines of the electric screens for the two stations in the same load area are respectively connected to different sections of energy storage feeder lines; two groups of incoming line breakers of each station power utilization screen are respectively connected to an alternating current 380V power supply output point of different sections of energy storage 380V bus bars under the same section of energy storage feeder line through power lines.
3. The energy storage station-based power station panel of claim 1, wherein the capacity specifications of the power station panel include 30kVA and 50 kVA.
4. The energy storage station-based distributed station power utilization system of claim 2, wherein the capacity specifications of the station power utilization screen comprise 30kVA and 50 kVA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230921.9A CN112202190B (en) | 2020-11-06 | 2020-11-06 | Station power screen based on energy storage station and distributed station power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230921.9A CN112202190B (en) | 2020-11-06 | 2020-11-06 | Station power screen based on energy storage station and distributed station power system |
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| CN112202190A true CN112202190A (en) | 2021-01-08 |
| CN112202190B CN112202190B (en) | 2024-04-02 |
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| KR20130098079A (en) * | 2012-02-27 | 2013-09-04 | 한국전력공사 | Apparatus and method for controlling power supply at substation |
| CN103560418A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Method for reducing substation distribution board failure times |
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| CN209419320U (en) * | 2019-03-13 | 2019-09-20 | 中国电建集团福建省电力勘测设计院有限公司 | Utilize the energy storage station station power use system of energy storage device |
| CN213585170U (en) * | 2020-11-06 | 2021-06-29 | 中国电建集团福建省电力勘测设计院有限公司 | Station power consumption screen and distributed station power consumption system based on energy storage station |
-
2020
- 2020-11-06 CN CN202011230921.9A patent/CN112202190B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120053606A (en) * | 2010-11-18 | 2012-05-29 | (주) 디지털파워 | Incoming and distributing panel with zero-phase harmonic active filter |
| KR20130098079A (en) * | 2012-02-27 | 2013-09-04 | 한국전력공사 | Apparatus and method for controlling power supply at substation |
| CN103560418A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Method for reducing substation distribution board failure times |
| CN104377805A (en) * | 2014-11-25 | 2015-02-25 | 常熟市五爱电器设备有限公司 | Communication station low-voltage distribution system |
| CN206775227U (en) * | 2017-04-25 | 2017-12-19 | 长沙湘邵电力设备有限公司 | Stand and use power supply AC system and device |
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| CN213585170U (en) * | 2020-11-06 | 2021-06-29 | 中国电建集团福建省电力勘测设计院有限公司 | Station power consumption screen and distributed station power consumption system based on energy storage station |
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| CN112202190B (en) | 2024-04-02 |
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