CN105896536A - Main wiring system of medium-voltage power distribution cabinet - Google Patents
Main wiring system of medium-voltage power distribution cabinet Download PDFInfo
- Publication number
- CN105896536A CN105896536A CN201610406118.3A CN201610406118A CN105896536A CN 105896536 A CN105896536 A CN 105896536A CN 201610406118 A CN201610406118 A CN 201610406118A CN 105896536 A CN105896536 A CN 105896536A
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- Prior art keywords
- cabinet
- current transformer
- fuse
- transformer
- power distribution
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention provides a main wiring system of a medium-voltage power distribution cabinet. The main wiring system comprises a metering cabinet, a PT cabinet, an incoming cabinet and a feeder cabinet, wherein the metering cabinet comprises a first current transformer, a first fuse, a metering voltage transformer, a first charged display and a first arrester; an incoming line terminal of the metering voltage transformer sequentially passes through the first fuse and the first current transformer and is connected with a medium-voltage bus; an outgoing line terminal of the first current transformer sequentially passes through the first charged display and the first arrester and is grounded; the PT cabinet comprises a three-winding voltage transformer and a second fuse; the incoming line terminal of the three-winding voltage transformer passes through the second fuse and is connected with the medium-voltage bus; the incoming line terminal of the second fuse passes through a second arrester and is grounded. The main wiring system of the medium-voltage power distribution cabinet is simple in structure and convenient to use; the fault rate of the system is reduced; the electric energy quality is improved; the power reliability is ensured; the electric cost expenditure is reduced; and the reliability of a power distribution network is improved.
Description
Technical field
The present invention relates to electrical network distribution technique field, particularly to a kind of medium voltage power distribution cabinet main electrical scheme system.
Background technology
At present, user side is one of important indicator of examining power supply enterprise by the reliability of distribution system, also reflect operation conditions and the technology management level of supply network simultaneously, be the key reference index of power grid construction and transformation, be also the important symbol weighing State Grid's development degree.Along with the development in epoch, user is required higher reliability by distribution system, and more flexible is intelligent, operates easier, runs more energy-conservation, safeguards simpler, and security performance is higher.The user side distribution system scheme that electricity market is not sought unity of standard at present, and customer equipment kind is more numerous and diverse, individual requirement is stronger, and market is more and more open, and this brings difficulty to user side distribution.And owing to amount electricity equipment is not independent, there is also stealing hidden danger, easily cause the increase of line loss per unit.Additionally, the existing mode of connection there is also certain unsafe factor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of medium voltage power distribution cabinet main electrical scheme system, and this system structure is simple, operation maintenance convenient, work efficiency is high and safe and reliable.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
Including a kind of medium voltage power distribution cabinet main electrical scheme system, including metering cabinet, PT cabinet, incoming line cabinet and feeder cabinet, described metering cabinet includes the first current transformer, first fuse, metering voltage transformer, first electrification display and the first spark gap, the end of incoming cables of described metering voltage transformer is connected with middle pressure bus through the first fuse and the first current transformer successively, the leading-out terminal of described first current transformer is respectively through the first electrification display and the first arrester ground, described PT cabinet includes three winding formula voltage transformer and the second fuse, end of incoming cables second fuse of described three winding formula voltage transformer is connected with middle pressure bus, end of incoming cables second arrester ground of described second fuse.
Further improvement as technique scheme:
Described incoming line cabinet includes the first chopper, the second current transformer and the second electrification display, carrying out end and the middle pressure two buss lines of described first chopper, its leading-out terminal is connected with the middle pressure bus of PT cabinet through the second current transformer, and described second electrification display is connected to the leading-out terminal of the second current transformer.
Described feeder cabinet includes the second chopper, the 3rd current transformer, disconnecting switch, the 3rd electrification display and zero sequence current mutual inductor, the carrying out of described second chopper is held and is connected with middle pressure bus, its leading-out terminal is connected with zero sequence current mutual inductor through the 3rd current transformer, described disconnecting switch and the 3rd electrification display are connected to the leading-out terminal of the 3rd current transformer, and the 3rd arrester ground is passed through in the end of incoming cables of described 3rd electrification display.
The invention has the beneficial effects as follows: medium voltage power distribution cabinet main electrical scheme system of the present invention, be not only simple in structure, easy to use, reduce the fault rate of system, improve the quality of power supply, and its operation maintenance is convenient, work efficiency is high, builds and operating cost is low, the advantage of scale can be played, improve overall efficiency.This system can ensure the reliability of electric power, and reduce electric cost expenditure as stand-by power supply for requiring that the user of uninterrupted power supply provides electric energy, improve distribution network reliability.
Accompanying drawing explanation
Fig. 1 is medium voltage power distribution cabinet main electrical scheme system diagram of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the medium voltage power distribution cabinet main electrical scheme system of the present embodiment, including metering cabinet 1, PT cabinet 2, incoming line cabinet 3 and feeder cabinet 4, metering cabinet 1 includes the first current transformer 11, first fuse 12, metering voltage transformer 13, first electrification display 14 and the first spark gap 15, the end of incoming cables of metering voltage transformer 13 is connected with middle pressure bus with the first current transformer 11 through the first fuse 12 successively, the leading-out terminal of the first current transformer 11 is respectively through the first electrification display 14 and the first spark gap 15 ground connection, PT cabinet 2 includes three winding formula voltage transformer 21 and the second fuse 22, end of incoming cables second fuse 22 of three winding formula voltage transformer 21 is connected with middle pressure bus, end of incoming cables the second spark gap 23 ground connection of the second fuse 22.
In the present embodiment, incoming line cabinet 3 includes the first chopper the 31, second current transformer 32 and the second electrification display 33, carrying out end and the middle pressure two buss lines of the first chopper 31, its leading-out terminal is connected with the middle pressure bus of PT cabinet 2 through the second current transformer 32, and the second electrification display 33 is connected to the leading-out terminal of the second current transformer 32.
Further, this feeder cabinet 4 includes the second chopper the 41, the 3rd current transformer 42, disconnecting switch the 43, the 3rd electrification display 44 and zero sequence current mutual inductor 45, the carrying out of the second chopper 41 is held and is connected with middle pressure bus, its leading-out terminal is connected with zero sequence current mutual inductor 45 through the 3rd current transformer 42, disconnecting switch 43 and the 3rd electrification display 44 are connected to the leading-out terminal of the 3rd current transformer 42, and the 3rd spark gap 46 ground connection is passed through in the end of incoming cables of the 3rd electrification display 44.
Medium voltage power distribution cabinet main electrical scheme system of the present invention, is not only simple in structure, easy to use, reduces the fault rate of system, improve the quality of power supply, and its operation maintenance is convenient, work efficiency is high, build and operating cost is low, the advantage of scale can be played, improve overall efficiency.This system can ensure the reliability of electric power, and reduce electric cost expenditure as stand-by power supply for requiring that the user of uninterrupted power supply provides electric energy, improve distribution network reliability.
Claims (3)
- null1. a medium voltage power distribution cabinet main electrical scheme system，It is characterized in that: include metering cabinet (1)、PT cabinet (2)、Incoming line cabinet (3) and feeder cabinet (4)，Described metering cabinet (1) includes the first current transformer (11)、First fuse (12)、Metering voltage transformer (13)、First electrification display (14) and the first spark gap (15)，The end of incoming cables of described metering voltage transformer (13) is connected with middle pressure bus with the first current transformer (11) through the first fuse (12) successively，The leading-out terminal of described first current transformer (11) is respectively through the first electrification display (14) and the first spark gap (15) ground connection，Described PT cabinet (2) includes three winding formula voltage transformer (21) and the second fuse (22)，The end of incoming cables the second fuse (22) of described three winding formula voltage transformer (21) is connected with middle pressure bus，End of incoming cables the second spark gap (23) ground connection of described second fuse (22).
- Medium voltage power distribution cabinet main electrical scheme system the most according to claim 1, it is characterized in that: described incoming line cabinet (3) includes the first chopper (31), the second current transformer (32) and the second electrification display (33), carrying out end and the middle pressure two buss lines of described first chopper (31), its leading-out terminal is connected with the middle pressure bus of PT cabinet (2) through the second current transformer (32), and described second electrification display (33) is connected to the leading-out terminal of the second current transformer (32).
- Medium voltage power distribution cabinet main electrical scheme system the most according to claim 1, it is characterized in that: described feeder cabinet (4) includes the second chopper (41), 3rd current transformer (42), disconnecting switch (43), 3rd electrification display (44) and zero sequence current mutual inductor (45), the carrying out of described second chopper (41) is held and is connected with middle pressure bus, its leading-out terminal is connected with zero sequence current mutual inductor (45) through the 3rd current transformer (42), described disconnecting switch (43) and the 3rd electrification display (44) are connected to the leading-out terminal of the 3rd current transformer (42), the 3rd spark gap (46) ground connection is passed through in the end of incoming cables of described 3rd electrification display (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610406118.3A CN105896536A (en) | 2016-06-12 | 2016-06-12 | Main wiring system of medium-voltage power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610406118.3A CN105896536A (en) | 2016-06-12 | 2016-06-12 | Main wiring system of medium-voltage power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896536A true CN105896536A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610406118.3A Pending CN105896536A (en) | 2016-06-12 | 2016-06-12 | Main wiring system of medium-voltage power distribution cabinet |
Country Status (1)
| Country | Link |
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| CN (1) | CN105896536A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451741A (en) * | 2016-08-25 | 2017-02-22 | 湖州泰伦电力设备有限公司 | 10KV dual-power-supply inflatable cabinet system |
| CN110535116A (en) * | 2019-09-10 | 2019-12-03 | 北京华电瑞通电力工程技术有限公司 | A kind of arc extinction cabinet and small current neutral grounding system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202034695U (en) * | 2011-02-18 | 2011-11-09 | 上海市电力公司 | Single power supply 10kV power distribution unit |
| CN104362519A (en) * | 2014-11-12 | 2015-02-18 | 国家电网公司 | Medium-voltage power distribution system |
| CN205693355U (en) * | 2016-06-12 | 2016-11-16 | 国网安徽省电力公司宿州供电公司 | A kind of medium voltage power distribution cabinet main electrical scheme system |
-
2016
- 2016-06-12 CN CN201610406118.3A patent/CN105896536A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202034695U (en) * | 2011-02-18 | 2011-11-09 | 上海市电力公司 | Single power supply 10kV power distribution unit |
| CN104362519A (en) * | 2014-11-12 | 2015-02-18 | 国家电网公司 | Medium-voltage power distribution system |
| CN205693355U (en) * | 2016-06-12 | 2016-11-16 | 国网安徽省电力公司宿州供电公司 | A kind of medium voltage power distribution cabinet main electrical scheme system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451741A (en) * | 2016-08-25 | 2017-02-22 | 湖州泰伦电力设备有限公司 | 10KV dual-power-supply inflatable cabinet system |
| CN106451741B (en) * | 2016-08-25 | 2019-05-03 | 湖州泰伦电力设备有限公司 | A kind of 10KV dual power supply gas-filling cabinet system |
| CN110535116A (en) * | 2019-09-10 | 2019-12-03 | 北京华电瑞通电力工程技术有限公司 | A kind of arc extinction cabinet and small current neutral grounding system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |
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| RJ01 | Rejection of invention patent application after publication |