CN2870245Y - Integrated power-supply device of transformer substation - Google Patents
Integrated power-supply device of transformer substation Download PDFInfo
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- CN2870245Y CN2870245Y CN 200620025152 CN200620025152U CN2870245Y CN 2870245 Y CN2870245 Y CN 2870245Y CN 200620025152 CN200620025152 CN 200620025152 CN 200620025152 U CN200620025152 U CN 200620025152U CN 2870245 Y CN2870245 Y CN 2870245Y
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- power supply
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Abstract
An integrated power supply device for transformer substation, which consists of a control shield (1), a feeder shield (2) and a battery shield (3). The control shield consists of a charging device (4), a DC converter (5), an inverter power supply (6) and a power supply monitoring unit (7). The feeder shield (2) consists of a multi-channel feeder switch (8) and a DC grounding line selection device (9). A battery unit (10) is installed in the battery shield (3). The charging device (4) charges the battery unit (10) and provides power supply for control and relay-protection devices in the substation through a plurality of shunt-connected high-frequency switching power supply modules, and the modules give out 220V or 110V DC power supply. The charging device (4) and the battery unit (10) form a DC bus to provide power supply for the DC converter (5) and the inverter power supply (6). The DC converter (5) provides power supply to communication devices in the substation through a plurality of shunt-connected converter modules, and the modules give out a 48V DC. The inverter power supply (6) provides power to important AC loads in the substation, such as background supporter machine, through a plurality of shunt-connected inverter modules, and the modules give out a 220V AC. The utility model combines three power supply devices normally used in transformer substations into an integrated power supply device. The utility model is featured with low investment and high availability, and can greatly reduce maintenance workloads on control power supply in transformer substations.
Description
Application of the present utility model
The utility model relates to a kind of integrated power supply device that is used for transformer station.
Technical background of the present utility model
In each grade transformer station of electric power system; there is equipment component need be equipped with reliable and stable power supply; these equipment comprise: background computer, the reliable and stable 220V AC power of transmitter needs; control device, protective relaying device need reliable 220V or 110V DC power supply, and communication equipment needs reliable and stable 48V DC power supply.Therefore need dispose independently UPS, control DC power supply and communication power supply in the transformer station usually.
The control DC power supply comprises charging device, batteries and power supply supervision unit, and under the normal condition, charging device is a charge in batteries, and is control device and protective relaying device power supply in the transformer station; Exchanging under the power-off condition, is control device and protective relaying device power supply by batteries.Communication power supply comprises rectifier, batteries and power supply supervision unit, and under the normal condition, rectifier is a battery charging, and is the communication equipment power supply; Under the accident conditions, be the communication equipment power supply by storage battery.UPS comprises rectifier, batteries, charge circuit, inverter and monitoring unit, and under the normal condition, rectifier is transformed to direct current with AC power, is the AC power of voltage stabilization and frequency stabilization again by the inverter inversion; Under the accident conditions, be inverter power supply by storage battery, guarantee the continuity of the power supply of important load, the UPS capacity that transformer station uses is less, generally below 5kVA.
There is the problem of the following aspects in the present this supply power mode of transformer station:
1) equipment investment is bigger
From the composition of control DC power supply, communication power supply and UPS, three kinds of power supplys all need to dispose independently batteries, so the initial investment of equipment is higher.With respect to miscellaneous equipment, the life-span of storage battery is shorter, and under the situation of correct operation and maintenance, the life-span of 12V valve-regulated lead-acid battery can reach 3-5, and the life-span of 2V storage battery can reach 8-10.Because improper use, storage battery does not often reach specified service life, thereby has increased the operating cost of transformer station.From the angle of development harmonious society, a large amount of discarded storage batterys also will increase country to investment in environment protection.
2) post repeats to be provided with
At present, control DC power supply, communication power supply and UPS use valve-control sealed lead acid battery, i.e. " maintenance-free battery ", here " non-maintaining " only refers to that not needing regularly to add acid adds water, still need regularly storage battery to be activated discharge test, otherwise, be in floating charge state for a long time, will shorten the service life of storage battery greatly.According to three kinds of operation maintenance rules that power supply is different separately, all need regularly to the batteries property checked discharge test and activation discharge test.Though all in a transformer station, owing to belong to different administrative departments, three departments all need to be provided with corresponding post to three group storage batteries.Therefore, the originally work that can be born by a maintenance group artificial has been distributed to three departments.
3) maintenance cost height
The battery pack of different electric pressures, when storage battery being activated discharge and the discharge of the capacity property checked, the service equipment of use is also different, therefore, if all batteries in the transformer station are safeguarded, then need to be equipped with three kinds of diverse service equipments, increased the investment of service equipment.In addition, because the difference of membership, the attendant of three departments travels to and fro between between each transformer station, has also increased the maintenance cost of equipment.
4) reliability is low
Reason owing to maintenance cost and post, the administrative department of some power supplys is not provided with corresponding post, causes batteries after putting into operation, and can not get corresponding the maintenance and detection, when accident needs batteries that stand-by power supply is provided, find that just battery capacity reduces already even damages.
Summary of the invention of the present utility model
The utility model purpose
The purpose of this utility model is to provide a kind of transformer station integrated power supply device.
Second purpose of the present utility model is to provide a kind of reliability height, transformer station's integrated power supply device easy to maintenance.
Technical solutions of the utility model
For achieving the above object, the utility model is achieved in that the integrated power supply device is by control flow (1), feeder line screen (2), battery panel (3) is formed, control flow (1) is by charging device (4), DC converter (5), inverter (6), power supply supervision unit (7) is formed, feeder line screen (2) is by multichannel feeder switch (8), DC earthing line selection apparatus (9) is formed, batteries (10) is installed in the battery panel (3), charging device (4) output direct current 220V, DC converter (5) output direct current 48V, inverter output AC 220V, it is DC converter (5) that charging device (4) and batteries (10) are formed dc bus, inverter (6) power supply.
For reaching second purpose, charging device of the present utility model (4), DC converter (5), inverter (6) all adopt modular construction, and each module is according to the N+1 redundant configuration.
Accompanying drawing of the present utility model
The present invention in detail described for illustrating better below by accompanying drawing.
Accompanying drawing 1 is external form figure of the present utility model.
Accompanying drawing 2 is electrical schematic diagrams of the present utility model.
Figure number wherein:
1: the charging screen; 2: the feeder line screen; 3: battery panel;
4: charging device; 5: DC converter; 6: inverter;
7: monitoring unit; 8: feeder switch; 9: the DC earthing line selection apparatus;
10: batteries; 11: switch QF1; 12: switch QF2;
13: switch QF3; 14: switch QF4.
Embodiment of the present utility model
Below in conjunction with accompanying drawing the utility model is described in detail.
Charging device (4) output outputs to dc bus through switch QF1 (11), batteries (10) is connected to dc bus through switch QF2 (12), the input of inverter (6) is connected to dc bus through switch QF3 (14), DC converter (5) is connected to dc bus through switch QF4 (13), and feeder switch (8) directly is connected with dc bus.
Under the normal condition; charging device (4) becomes direct current 220V voltage with three-phase alternating-current supply; output to dc bus; dc bus carries out floating charge to batteries (10); and be that control device in the transformer station and protective relaying device are powered by feeder switch (8); the 220V dc voltage conversion that DC converter (5) provides dc bus is the 48V direct voltage; be the power supply of the communication equipment in the transformer station; inverter (6) is the 220V alternating voltage with the 220V direct voltage inversion that dc bus provides, and is the background computer in the transformer station, transmitter power supply.
Under the accident conditions; three-phase alternating-current supply disappears; charging device (4) output voltage disappears; by batteries (10) is DC bus powered; the assurance DC bus-bar voltage is stable; the output voltage of DC converter (5), inverter (6) remains unchanged, and guarantees the continuity that control device, protective relaying device, communication equipment, background computer, transmitter in the transformer station are powered.
The capacity of batteries (10) also will be considered the power of communication equipment, background computer, transmitter etc. except that the load of control device, protective relaying device.Charging device (4), DC converter (5), inverter (6) but all adopt the parallel modular structure, a plurality of modules can realize the mean allocation of electric current according to the configuration of N+1 redundant fashion between a plurality of modules.It is the module of 20A that charging device (4) adopts rated current, and according to the batteries capacity, quantity in parallel is 2-4; It is the module of 10A that DC converter (5) adopts rated current, and according to the power of communication equipment, quantity 2-6 in parallel only; It is the module of 2kVA that inverter (6) adopts rated capacity, and according to the electrical source consumption power of background computer and transmitter, quantity 2-4 in parallel only.
Monitoring unit (7) is measured, is monitored and control the running status of charging device (4), DC converter (5), inverter (6), distribution switch (8), batteries (10), communicates by RS232, RS485 and host computer.DC earthing line selection apparatus (9) is monitored the state of insulation of dc bus and feeder switch (8).
The useful result of the utility model
1) cancel communication power supply battery pack, UPS battery group, communication power supply rack, thereby reduced the overall cost of transformer station's power-supply device,
2) only need the personnel of an administrative department that transformer station's power-supply device is safeguarded, increase work efficiency, reduce maintenance workload,
3) by the special messenger battery is carried out maintenance management, can greatly improve the reliability of power supply, guarantee the power supply of visual plant in the transformer station under the accident conditions,
4) but charging device, DC converter, inverter all adopt the high frequency parallel module, the reliability height is safeguarded Convenient.
Claims (5)
1. transformer station's integrated power supply device, form by control flow (1), feeder line screen (2), battery panel (3), it is characterized in that control flow (1) is made up of charging device (4), DC converter (5), inverter (6), power supply supervision unit (7), feeder line screen (2) is made up of multichannel feeder switch (8), DC earthing line selection apparatus (9), and batteries (10) is installed in the battery panel (3).
2. transformer station according to claim 1 integrated power supply device is characterized in that charging device (4) adopts a plurality of high-frequency switching power supply modules according to the parallel connection of N+1 redundant fashion, output 220V or 110V direct current.
3. transformer station according to claim 1 integrated power supply device is characterized in that it is DC converter (5), inverter (6) power supply that charging device (4) and batteries (10) are formed dc bus.
4. transformer station according to claim 1 integrated power supply device is characterized in that DC converter (5) adopts a plurality of converter modules to make parallel connection according to N+1 redundancy side, output 48V direct current.
5. transformer station according to claim 1 integrated power supply device is characterized in that inverter (6) adopts a plurality of inversion modules according to the parallel connection of N+1 redundant fashion, output AC 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025152 CN2870245Y (en) | 2006-01-16 | 2006-01-16 | Integrated power-supply device of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025152 CN2870245Y (en) | 2006-01-16 | 2006-01-16 | Integrated power-supply device of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2870245Y true CN2870245Y (en) | 2007-02-14 |
Family
ID=37725185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620025152 Expired - Fee Related CN2870245Y (en) | 2006-01-16 | 2006-01-16 | Integrated power-supply device of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2870245Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068774A1 (en) * | 2010-11-24 | 2012-05-31 | 四川电力试验研究院 | Lithium iron battery-based direct current power supply emergency response system for transformer substation |
| CN104333966A (en) * | 2014-11-15 | 2015-02-04 | 国家电网公司 | Training cabinet recycling and reusing static electricity |
| CN104795979A (en) * | 2014-01-21 | 2015-07-22 | 北京动力源科技股份有限公司 | Intelligent composite power supply |
| CN106549501A (en) * | 2016-12-09 | 2017-03-29 | 国网安徽省电力公司池州供电公司 | For the intelligent management monitoring unit and transformer substation communication power-supply system of communication power supply |
| CN107947344A (en) * | 2017-11-30 | 2018-04-20 | 苏州苏驼通信科技股份有限公司 | A kind of emergent combined type backup power supply equipment integrating for communication base station |
| CN108494072A (en) * | 2018-05-30 | 2018-09-04 | 南京麦格安倍电气科技有限公司 | A kind of modularization accumulator aviation startup power supply system |
| CN110380507A (en) * | 2019-07-24 | 2019-10-25 | 安徽新力电气设备有限责任公司 | Substation's mixed type continuous-current plant |
| CN115347666A (en) * | 2022-08-27 | 2022-11-15 | 国网新疆电力有限公司乌鲁木齐供电公司 | Direct current power supply system for modular station |
| EP4250545A4 (en) * | 2020-11-30 | 2024-05-01 | Huawei Tech Co Ltd | Power converter |
-
2006
- 2006-01-16 CN CN 200620025152 patent/CN2870245Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068774A1 (en) * | 2010-11-24 | 2012-05-31 | 四川电力试验研究院 | Lithium iron battery-based direct current power supply emergency response system for transformer substation |
| CN104795979A (en) * | 2014-01-21 | 2015-07-22 | 北京动力源科技股份有限公司 | Intelligent composite power supply |
| CN104333966A (en) * | 2014-11-15 | 2015-02-04 | 国家电网公司 | Training cabinet recycling and reusing static electricity |
| CN104333966B (en) * | 2014-11-15 | 2016-10-19 | 国家电网公司 | A kind of training cabinet of electric static recovery recycling |
| CN106549501A (en) * | 2016-12-09 | 2017-03-29 | 国网安徽省电力公司池州供电公司 | For the intelligent management monitoring unit and transformer substation communication power-supply system of communication power supply |
| CN106549501B (en) * | 2016-12-09 | 2023-05-16 | 国网安徽省电力公司池州供电公司 | Intelligent management monitoring unit for communication power supply and transformer substation communication power supply system |
| CN107947344A (en) * | 2017-11-30 | 2018-04-20 | 苏州苏驼通信科技股份有限公司 | A kind of emergent combined type backup power supply equipment integrating for communication base station |
| CN108494072A (en) * | 2018-05-30 | 2018-09-04 | 南京麦格安倍电气科技有限公司 | A kind of modularization accumulator aviation startup power supply system |
| CN110380507A (en) * | 2019-07-24 | 2019-10-25 | 安徽新力电气设备有限责任公司 | Substation's mixed type continuous-current plant |
| EP4250545A4 (en) * | 2020-11-30 | 2024-05-01 | Huawei Tech Co Ltd | Power converter |
| CN115347666A (en) * | 2022-08-27 | 2022-11-15 | 国网新疆电力有限公司乌鲁木齐供电公司 | Direct current power supply system for modular station |
| CN115347666B (en) * | 2022-08-27 | 2023-08-08 | 国网新疆电力有限公司乌鲁木齐供电公司 | DC power supply system for modularized station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |