CN205863657U - 220kV double bus scheme transmission line circuit wiring optimizes structure - Google Patents
220kV double bus scheme transmission line circuit wiring optimizes structure Download PDFInfo
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- CN205863657U CN205863657U CN201620860091.0U CN201620860091U CN205863657U CN 205863657 U CN205863657 U CN 205863657U CN 201620860091 U CN201620860091 U CN 201620860091U CN 205863657 U CN205863657 U CN 205863657U
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- switch
- chopper
- bus
- transmission line
- disconnecting switch
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Abstract
The utility model discloses a kind of 220kV double bus scheme transmission line circuit wiring and optimize structure, including chopper, the first disconnecting switch, the first inspection earthing switch, high speed grounding switch, voltage transformer, current transformer and spark gap, the bus bar side of chopper is sequentially connected with the first inspection earthing switch, the first disconnecting switch to bus, and the outgoing line side of chopper is connected with current transformer, high speed grounding switch, voltage transformer, charged display device, spark gap in turn；Described new arrangement, when 220kV outlet is without T link, removes the second disconnecting switch of breaker outgoing line side, the second inspection earthing switch relative to traditional connection type optimization, and the miscellaneous equipment order of connection is identical with conventional connections.This utility model simplifies wiring, improves equipment dependability, meets the basic design principle of main electrical scheme " reliability is reasonable, and economy is optimum ", it is easy to promote the use of.
Description
Technical field
This utility model relates to electrical main connecting wire technical field, particularly relates to a kind of 220kV double bus scheme transmission line circuit
Wiring optimizes structure.
Background technology
Electrical main connecting wire is mainly in power plant, electrical power system in substation as to meet predetermined power transmission and operation etc.
Requiring and design, it shows the circuit transmitting electric energy of interconnected relationship, the high pressure in circuit between high voltage electric equipment
Electrical equipment includes bus, chopper, isolation switch, spark gap etc., and their connected mode is to power supply reliability, flexible operation
Property and economic rationality etc. play decisive role (typically when studying Main Wire Connection Scheme and the method for operation, in order to clear and square
Just, generally three-phase circuit figure is depicted as line chart).
Electrical main connecting wire should meet the following requirements: (1) reliability of operation: main electrical scheme system should ensure that and supplies user
The reliability of electricity, particularly ensures the power supply to important load；(2) motility run: main electrical scheme system should be able to be fitted neatly
Answer various working conditions, particularly when a part of overhaul of the equipments or working condition change, it is possible to by switching switch
The method of operation, accomplishes scheduling flexibly, does not interrupt the power supply to user, when enlarging should be able to very easily from primary construction to finally
Wiring；(3) main electrical scheme system also should ensure that and runs the convenience of operation and under ensureing the requirement that meets the specification, accomplish through
Ji rationally, reduces floor space as far as possible, reduces investment outlay.
Double bus scheme is a kind of connection type conventional in power system, and two groups of buses of double-bus work simultaneously, and
By bus-tie circuit breaker parallel running, power supply and load are distributed evenly on two groups of buses.China's 220kV distribution dress at present
Putting more employing Cubicle Gas-Insulated Switchgear (GIS), the 220kV power distribution equipment in 220kV electric substation, when in system
In occupy critical role, transmission line circuit number be 4 times and above time, preferably use double bus scheme.
Fig. 1 is the 220kV transmission line circuit wiring diagram of prior art, according to regulation in " power engineering electrical design handbook ":
" both sides of chopper all should configuration isolation switch, in order to the insulating power supply when overhaul of line breaker." GIS combination electric appliance is open circuit
Device the 1, first disconnecting switch the 2, second disconnecting switch the 3, first inspection earthing switch the 4, second inspection earthing switch 5, rapid grounding
The equipment that switch 6, current transformer 8, voltage transformer 7 are highly integrated, employing gas-insulated, compact conformation, even if chopper 1
First disconnecting switch the 2, second disconnecting switch 3 of both sides is all opened, and only has a disconnecting switch between maintenance part and live part
Fracture, can not Disintegration overhaul online；GIS disconnecting switch is only external equipment (bus, main transformer etc.) and internal debugging chopper
Offer secured electrical is isolated.Along with the raising of device fabrication level, equipment dependability greatly improves, and therefore designs for switch maintenance
Chopper both sides disconnecting switch just lose (the most greatly slackening) exist necessity and actual application value.Double mothers
Under line section wiring mode, outgoing line side disconnecting switch always exits with chopper simultaneously, puts into operation, only plays and examines into chopper
Repair the effect that security isolation is provided.So, the optimization of 220kV double bus scheme transmission line circuit, to safe operation and investment reduction
There is very important meaning.
Therefore, those skilled in the art is devoted to develop a kind of 220kV double bus scheme transmission line circuit wiring optimization knot
Structure.
Utility model content
Because the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide a kind of 220kV
Double bus scheme transmission line circuit wiring optimizes structure, simplifies wiring, reasonable in design, improves equipment dependability, meets main
The basic design principle of wiring " reliability is reasonable, and economy is optimum ", it is easy to promote the use of.
For achieving the above object, this utility model provides 220kV double bus scheme transmission line circuit wiring and optimizes structure, wraps
Include chopper, the first disconnecting switch, the first inspection earthing switch, high speed grounding switch, voltage transformer, current transformer and keep away
Thunder device, the bus bar side of chopper is sequentially connected with the first inspection earthing switch, the first disconnecting switch to bus, the outgoing line side of chopper
It is connected with current transformer, high speed grounding switch, voltage transformer, charged display device, spark gap in turn.
As preferably, described new arrangement is when 220kV outlet is without T link, excellent relative to traditional connection type
Change and remove the second disconnecting switch of breaker outgoing line side, the second inspection earthing switch, new arrangement by chopper, first keep apart
Pass, the first inspection earthing switch, high speed grounding switch, voltage transformer, current transformer, spark gap are suitable according to certain connection
Sequence connects composition, and its order of connection is identical with conventional connections.
The beneficial effects of the utility model are:
(1) optimization of new arrangement form eliminates disconnecting switch and the earthed switch of breaker outgoing line side, and each GIS is spaced
Equipment investment 20-30 ten thousand yuan can be saved, good in economic efficiency；
(2) this kind of connection type simplifies wiring, improves equipment dependability, meet main electrical scheme run safety, simple and flexible,
The basic design principle such as easy to operate.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is made furtherly
Bright, to be fully understood from the purpose of this utility model, feature and effect.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of background technology；
Fig. 2 is circuit diagram of the present utility model.
Detailed description of the invention
With reference to Fig. 2, this detailed description of the invention by the following technical solutions:
220kV double bus scheme transmission line circuit wiring optimizes structure, examines including chopper the 1, first disconnecting switch 2, first
Repairing earthed switch 4, high speed grounding switch 6, voltage transformer 7, current transformer 8 and spark gap 9, the bus bar side of chopper 1 depends on
Secondary connection the first inspection earthing switch the 4, first disconnecting switch 2 to bus 10, it is mutual that the outgoing line side of chopper 1 is connected with electric current in turn
Sensor 8, high speed grounding switch 6, voltage transformer 7, charged display device 11, spark gap 9.
This detailed description of the invention is a kind of novel 220kV outlet connection type, when 220kV outlet is without T link, relatively
Second disconnecting switch the 3, second inspection earthing switch 5 of chopper 1 outgoing line side, Novel connecting is removed in traditional connection type optimization
Line is mutual by chopper the 1, first disconnecting switch the 2, first inspection earthing switch 4, high speed grounding switch 6, voltage transformer 7, electric current
Sensor 8, spark gap 9 connect composition according to certain order of connection, and its order of connection is identical with conventional connections.
Connection type after this detailed description of the invention optimizes is as shown in table 1 with the technology comparison of traditional wired form:
Table 1
The wiring of this detailed description of the invention is proved through SSRE-TH software, after cancelling outgoing line side disconnecting switch, and power supply reliability
More former scheme improves, result of calculation such as table 2, table 3:
Double bus scheme after table 2 improves contrasts with double bus scheme continuity parameter
| Failure-frequency | Idle time in year | Probability | |
| Double-bus (after optimization) | 100% | 99.34% | 99.34% |
| Double-bus | 100% | 100% | 100% |
Double bus scheme after table 3 improves contrasts with double bus scheme adequacy indexes
| EPNS | EENS | |
| Double-bus (after optimization) | 100% | 99.63% |
| Double-bus | 100% | 100% |
This detailed description of the invention connection type simplifies wiring, and each interval current period can save disconnecting switch 1 group, and ground connection is opened
Closing 1 group, this allocation plan meets main electrical scheme " reliability ", " economy ", the requirement of " motility ", has raising equipment reliable
Property, save the feature such as overall life cycle cost, meeting main electrical scheme, to run safety, simple and flexible, the Basic Design such as easy to operate former
Then, there is wide market application foreground.
Preferred embodiment of the present utility model described in detail above.Should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technology neck
In territory, technical staff passes through logical analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model
Test available technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (1)
1. the wiring of 220kV double bus scheme transmission line circuit optimize a structure, including chopper (1), the first disconnecting switch (2),
First inspection earthing switch (4), high speed grounding switch (6), voltage transformer (7), current transformer (8) and spark gap (9), its
It is characterised by: the bus bar side of chopper (1) is sequentially connected with the first inspection earthing switch (4), the first disconnecting switch (2) to bus
(10), the outgoing line side of chopper (1) be connected with in turn current transformer (8), high speed grounding switch (6), voltage transformer (7),
Charged display device (11), spark gap (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620860091.0U CN205863657U (en) | 2016-08-10 | 2016-08-10 | 220kV double bus scheme transmission line circuit wiring optimizes structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620860091.0U CN205863657U (en) | 2016-08-10 | 2016-08-10 | 220kV double bus scheme transmission line circuit wiring optimizes structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205863657U true CN205863657U (en) | 2017-01-04 |
Family
ID=57658623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620860091.0U Expired - Fee Related CN205863657U (en) | 2016-08-10 | 2016-08-10 | 220kV double bus scheme transmission line circuit wiring optimizes structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205863657U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856436A (en) * | 2019-01-09 | 2019-06-07 | 国网上海市电力公司 | A kind of electric energy metering device |
| CN111596204A (en) * | 2020-05-11 | 2020-08-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current field breaker fracture alternating current withstand voltage test system and method |
| CN114374218A (en) * | 2021-12-14 | 2022-04-19 | 中国华能集团清洁能源技术研究院有限公司 | High-capacity offshore flexible direct-current power transmission system |
-
2016
- 2016-08-10 CN CN201620860091.0U patent/CN205863657U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856436A (en) * | 2019-01-09 | 2019-06-07 | 国网上海市电力公司 | A kind of electric energy metering device |
| CN111596204A (en) * | 2020-05-11 | 2020-08-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current field breaker fracture alternating current withstand voltage test system and method |
| CN111596204B (en) * | 2020-05-11 | 2023-12-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating-current field breaker fracture alternating-current withstand voltage test system and method |
| CN114374218A (en) * | 2021-12-14 | 2022-04-19 | 中国华能集团清洁能源技术研究院有限公司 | High-capacity offshore flexible direct-current power transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20200810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |