CN204794339U - System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer - Google Patents
System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer Download PDFInfo
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- CN204794339U CN204794339U CN201520512092.1U CN201520512092U CN204794339U CN 204794339 U CN204794339 U CN 204794339U CN 201520512092 U CN201520512092 U CN 201520512092U CN 204794339 U CN204794339 U CN 204794339U
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- bypass cable
- transformer
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- oneself willingly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Supply And Distribution Of Alternating Current (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer, this system is including parallelly connected first bypass cable (L1), second bypass cable (L2), third bypass cable (L3), concatenated first power and haul oneself willingly into a switch (1DL) and a load switch (K1) fully on first bypass cable (L1), met the 2nd load switch (K2) on second bypass cable (L2), connect the second source to haul oneself willingly into switch (2DL) fully on third bypass cable (L3), third bypass cable (L3) supplies transformer or low pressure generating set (2) to be connected with portable the commentaries on classics. The utility model discloses can be when the transformer break down, accomplish low -voltage load's uninterrupted power supply, make the load change the restriction that supplies no longer to receive time, place, power, guarantee not having a power failure of user, improve the service reliability of distribution network.
Description
Technical field
The utility model belongs to bypass live line working technical field, when applicable low voltage distribution transformer proceeds to maintenance, utilizes bypass live line working and duplicate supply prepared auto restart technology to realize uninterrupted power supply to Awaiting Overhaul transformer back-end load.
Background technology
Constant power supply is the basic demand of each department of national economy to electric power.Along with the development of China's economic construction, urban electricity supply reliability has become power supply unit emphasis performance assessment criteria, improve the vital task that power supply reliability has become current power department, widely popularize 10kV line live-line work, being the developing direction of urban power distribution network overhaul management from now on, is also the major measure replacing interruption maintenance.At present, China's live line working in 10kV power distribution network is carried out comparatively extensive, and technology is relative maturity.But relative to low-voltage distribution, technology is relatively blank, particularly for single supply transformer back-end load, once transformer goes wrong need maintenance, adopt the method for existing live line working, user transformers can only be substituted with temporary transformers, namely under the prerequisite meeting power network safety operation, by changing network breaker in middle state or operation such as excision load etc., by the mode of power failure operation faulty section internal loading is transferred to other transformers or low voltage generator group is powered.But parallel operation of transformers need meet, and winding connection group is identical, no-load voltage ratio difference is no more than ± and 0.5%, short circuit voltage value is no more than ± 10%, two transformer capacity ratios are no more than the conditions such as 3:1, therefore, the limitation that temporary transformers and maintenance transformer reach condition arranged side by side is comparatively large, is difficult to spread and uses.
Summary of the invention
The utility model object be to solve low-voltage load turns can not the problem of reliable power supply by the restriction of parallel operation of transformers condition for equipment, a kind of system of charged employing prepared auto restart technical substitution 10kV transformer is provided.
The purpose of this utility model is achieved through the following technical solutions.
The system of charged employing prepared auto restart technical substitution 10kV transformer, this system includes the first bypass cable, the second bypass cable, the 3rd bypass cable in parallel; First bypass cable is serially connected with the first power supply prepared auto restart switch and the first on-load switch, second bypass cable is connected to the second on-load switch, 3rd bypass cable is connected to second source prepared auto restart switch, and the 3rd bypass cable is connected for transformer or low voltage generator group with portable turning.
Adopt the utility model, utilize mode and the prepared auto restart know-why of bypass live line working, can when transformer break down, the load of transformer is transferred to other transformers in short-term or low voltage generator group is powered, transformer is overhauled, after having overhauled, low-voltage load is transferred to former transformer-supplied, the uninterrupted power supply of low-voltage load can be completed, make load transfer no longer by the restriction of time, place, power supply, ensure not having a power failure of user, improve the power supply reliability of power distribution network.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model.
Embodiment
Content of the present utility model is set forth further below in conjunction with Figure of description.
As shown in Figure 1, the utility model system includes the first bypass cable L1, the second bypass cable L2, the 3rd bypass cable L3 in parallel; First bypass cable L1 is serially connected with the first power supply prepared auto restart switch 1DL and the first on-load switch K1, second bypass cable L2 is connected to the second on-load switch K2,3rd bypass cable L3 is connected to second source prepared auto restart switch 2DL, and the 3rd bypass cable L3 is connected for transformer or low voltage generator group 2 with portable turning.
When 10KV transformer 1 go wrong need maintenance time, the load of 10KV transformer 1 rear end low-voltage customer 4 is turned to be turned by movable type and power for transformer or low voltage generator group 2, operational method the free end of the first bypass cable L1 of the present utility model and the second bypass cable L2 is accessed respectively the front-end and back-end main line between 10KV transformer 1 and low-voltage customer 4 preparing the cut-off point 3 disconnected, guarantee during access that all on-load switches of the utility model are in open position, all prepared auto restart switches are in electroless state.Close after the utility model access on-load switch K1, K2, energy normal operation after prepared auto restart switch is energized, then on-load switch K1 is disconnected, automatically disconnect after making prepared auto restart switch 1DL power-off, prepared auto restart switch 2DL automatic closing, turns to be turned by movable type and powers for low-voltage customer 4 for transformer or low voltage generator group 2.Then cut off the power supply of 10KV transformer 1, disconnect cut-off point 3,10KV transformer is overhauled.After maintenance, close on-load switch K1 and prepared auto restart switch 1DL, and prepared auto restart switch 2DL disconnects automatically, remove the 3rd stube cable L3, again connect cut-off point 3, then disconnect on-load switch K2, finally the first bypass cable L1 and the second bypass cable L2 is pulled down from main line.
Claims (1)
1. the system of charged employing prepared auto restart technical substitution 10kV transformer, is characterized in that, this system includes the first bypass cable (L1), the second bypass cable (L2), the 3rd bypass cable (L3) in parallel; First bypass cable (L1) is serially connected with the first power supply prepared auto restart switch (1DL) and the first on-load switch (K1), second bypass cable (L2) is connected to the second on-load switch (K2), 3rd bypass cable (L3) is connected to second source prepared auto restart switch (2DL), and the 3rd bypass cable (L3) is connected for transformer or low voltage generator group (2) with portable turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512092.1U CN204794339U (en) | 2015-07-15 | 2015-07-15 | System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512092.1U CN204794339U (en) | 2015-07-15 | 2015-07-15 | System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794339U true CN204794339U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520512092.1U Active CN204794339U (en) | 2015-07-15 | 2015-07-15 | System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054656A (en) * | 2021-03-10 | 2021-06-29 | 广东电网有限责任公司广州供电局 | Distribution transformer overhauling method and device, electronic equipment and storage medium |
-
2015
- 2015-07-15 CN CN201520512092.1U patent/CN204794339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054656A (en) * | 2021-03-10 | 2021-06-29 | 广东电网有限责任公司广州供电局 | Distribution transformer overhauling method and device, electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.1 yangxianpo, Wuhua District, Kunming, Yunnan 650033 Patentee after: Transmission branch of Yunnan Power Grid Co.,Ltd. Address before: No. 201, Baita Road, Panlong District, Kunming, Yunnan 650011 Patentee before: YUNNAN POWER GRID Co.,Ltd. CHARGED OPERATION BRANCH |
|
| CP03 | Change of name, title or address |