CN110445044A - Single bus-bar operation transformation station remodeling method - Google Patents
Single bus-bar operation transformation station remodeling method Download PDFInfo
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- CN110445044A CN110445044A CN201910440521.1A CN201910440521A CN110445044A CN 110445044 A CN110445044 A CN 110445044A CN 201910440521 A CN201910440521 A CN 201910440521A CN 110445044 A CN110445044 A CN 110445044A
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- Prior art keywords
- main transformer
- bus
- electricity
- transformer electricity
- busbar
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Classifications
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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
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The present invention relates to high voltage substation renovation technique fields, disclose a kind of single bus-bar operation transformation station remodeling method, include the following steps: that the load by No. two main transformer electricity moves to No.1 main transformer electricity, accesses double-bus after being first segmented No. two main transformers, then No. two main transformers are connect into electricity.Then the operation that electricity is powered off, accessed, connect to No.1 main transformer electricity, finally takes back load.And relevant device is handled.The present invention, which is realized, is changed to double-bus operation for the operation of original sectionalized single busbar connection, keeps equipment operation more flexible reliable.
Description
Technical field
The present invention relates to high voltage substation renovation technique fields, and in particular to be a kind of transformation of single bus-bar operation transformation station
Method.
Background technique
Job requirement of the high voltage substation at design initial stage can no longer meet current with the variation of power demand
Power demand.In addition, all facilities of substation also will be replaced periodically to eliminate safe hidden trouble.
The effect of high-voltage electricity bus is to collect, distribute and transmit electric energy.In operation due to bus, there is huge electric energy logical
It crosses, when short-circuit, subjects very big fever and dynamo-electric effect, therefore, existing single busbar substation is become by double-bus substantially
Replaced power station, double-bus power supply is reliable, and flexibly, enlarging is convenient for scheduling, convenient for design.
In view of the above problems, existing way is two kinds nothing but, one is substation is built again, another kind is to substation
It is transformed.Reconstruction substation is at high cost, and the period is long, to the wasting of resources than more serious.And substation is transformed, to carry out power failure behaviour
Make, influences to produce.
Summary of the invention
The purpose of the present invention is to solve the above problems, a kind of single bus-bar operation transformation station remodeling method are provided, not
In the case that influence follow up device normally produces, the segmentation of bus relevant device, which has a power failure, is transformed, final realization substation's double-bus fortune
Row.
The technical solution adopted by the present invention is that:
A kind of single bus-bar operation transformation station remodeling method, characterized in that substation includes at least two groups of main transformer electricity, respectively
No.1 main transformer electricity and No. two main transformer electricity, single busbar have two inlet wires, one mother and two disconnecting switch.The single bus-bar operation transformation station
Remodeling method includes the following steps:
(1) load of No. two main transformer electricity is moved into No.1 main transformer electricity；
(2) breaker between No. two main transformer electricity and single busbar is disconnected；Make No. two main transformer electricity power loss and is grounded；
(3) bus isolating switch for disconnecting No. two main transformer corresponding segments of single busbar disconnects No. two main transformers and corresponds to single busbar point
The incoming breaker of section, and the sectionalized busbar is grounded；
(4) the single busbar equipment of No. two main transformer corresponding segments of removal increases the first segmentation double-bus relevant device, Ge Xiangshi
Test equal qualification；
(5) No. two main transformer electric equipments are accessed, No. two main transformers are electrically accessed in the first segmentation double-bus on two mothers；
(6) breaker between No. two main transformer electricity and bus is closed；Make No. two main transformers are electric must be electric；
(7) to No.1 main transformer electricity and No. two main transformer electricity high and low pressure side nuclear phases, determine that nuclear phase is normal；
(8) load of No.1 main transformer electricity is moved into No. two main transformer electricity；
(9) breaker between the corresponding single busbar of No.1 main transformer electricity is disconnected；Make No.1 main transformer electricity power loss and is grounded；
(10) bus isolating switch for disconnecting single busbar No.1 main transformer corresponding segments disconnects No. two main transformers and corresponds to single busbar point
The incoming breaker of section, and the sectionalized busbar is grounded；
(11) the single busbar equipment of removal No.1 main transformer corresponding segments increases by the second segmentation double-bus relevant device, every
Test is qualified；
(12) is accessed by No.1 main transformer electricity and is set for this part busbar charging with the bus connection switch of institute's band on the second sectionalized busbar
It is standby, the breaker between No.1 main transformer electricity and double-bus is closed, No.1 main transformer electricity work once electrified is made；
(13) No.1 main transformer electric loading is taken back into No.1 main transformer electricity；
(14) realize that double-bus loop-net operation, No.1 main transformer hang a female operation, No. two main transformers hang two female operations.
Further, the substation further includes No. three main transformer electricity and No. four main transformer electricity, No. three main transformer electricity and No. four masters
The reforming mode of power transformation is identical as No.1 main transformer electricity and No. two main transformer electricity, carries out No. three main transformer electricity and No. four masters afterwards in step (14)
The transformation of power transformation.
Further, the step (4), the relevant device in (11) include: control cabinet, control cabinet cable, a control cabinet
One or more of secondary cable, gas chamber.
Further, the relevant device of the double-bus includes four sections of incoming breakers, bus pipe, disconnecting switch.
Further, the dismounting sequence of the first sectionalized busbar relevant device and the second sectionalized busbar relevant device are as follows: control
Cabinet secondary cable processed, control cabinet cable, control cabinet, a gas chamber.
Further, when the step (4), the sectionalized busbar relevant device in (11) are removed, break to the power supply of its light current
It opens.
Further, the gas chamber is tested after removing, and is recycled to gas indoor gas.
Further, the test includes using preceding purity and slug test and equipment pressure test.
Further, it is equipped at the scene after the main transformer electric equipment preprocessing.
Further, the transformation station input voltage is 110KV.
The beneficial effects of the present invention are:
(1) operation of original sectionalized single busbar connection is changed to double-bus operation, keeps equipment operation more flexible reliable；
(2) the prefabricated completion of part reforming equipment improves transformation efficiency；
(3) it does not influence to produce, realizes that most equipment does not have a power failure transformation.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is No. two main transformer electricity transformations is power cutoff device in double dot dash line in figure；
Fig. 2 is the structural schematic diagram after No. two main transformer electricity transformations, is power cutoff device in double dot dash line in figure；
Structural schematic diagram when Fig. 3 is No.1 main transformer electricity transformation is power cutoff device in double dot dash line in figure；
Fig. 4 is the structural schematic diagram after No.1 main transformer electricity transformation, is power cutoff device in double dot dash line in figure；
Structural schematic diagram when Fig. 5 is No. four main transformer electricity transformations is power cutoff device in double dot dash line in figure；
Fig. 6 is the structural schematic diagram after No. four main transformer electricity transformations, is power cutoff device in double dot dash line in figure；
Structural schematic diagram when Fig. 7 is No. three main transformer electricity transformations is power cutoff device in double dot dash line in figure；
Fig. 8 is the structural schematic diagram after No. three main transformer electricity transformations, is power cutoff device in double dot dash line in figure.
Fig. 9 is the positioning of secondary control cabinet and secondary cable catenation principle figure with frequency with phase study.
Specific embodiment
It elaborates with reference to the accompanying drawing to the specific embodiment of single bus-bar operation transformation station remodeling method of the present invention.
Referring to Fig. 1,2, when transformation, the load of No. two main transformer electricity is moved into No.1 main transformer electricity；Disconnect No. two main transformer electricity and list
Breaker between bus；Make No. two main transformer electricity power loss and is grounded；Disconnect the bus isolation of No. two main transformer corresponding segments of single busbar
Switch, disconnects the incoming breaker that No. two main transformers correspond to sectionalized single busbar connection, and the sectionalized busbar is grounded；Removal single busbar two
Main transformer corresponding segment equipment, increases first segment double-bus relevant device, and items test is qualified；No. two main transformer electric equipments are accessed, it will
No. two main transformers are electrically accessed in double-bus on two mothers；Close the breaker between No. two main transformer electricity and bus；Make No. two main substations
It is obtained every equipment electric；To No. two main transformer electricity and the equal nuclear phase in No.1 main transformer electricity high and low pressure side, determine that nuclear phase is normal；By No.1 main transformer electricity
Load move to No. two main transformer electricity；.
Double dot dash line in figure is power-off section, and operation is carried out in power-off section, and other sections that do not power off work as usual.
Referring to Fig. 3,4, the load of No.1 main transformer electricity is moved into No. two main transformer electricity；It is corresponding single female to disconnect No.1 main transformer electricity
Breaker between line；Make No.1 main transformer electricity power loss and is grounded；The bus for disconnecting single busbar No.1 main transformer corresponding segments is kept apart
It closes, disconnects the incoming breaker that No. two main transformers correspond to sectionalized single busbar connection, and the sectionalized busbar is grounded；Removal No.1 main transformer is corresponding
The single busbar equipment of segmentation, increases by the second segmentation double-bus relevant device, and items test is qualified；With institute on the second sectionalized busbar
The bus connection switch of band accesses No.1 main transformer electric equipment to this part busbar charging, closes between No.1 main transformer electricity and double-bus
Breaker makes No.1 main transformer electricity work once electrified；
Equally, referring to Fig. 5,6 and referring to Fig. 7,8, the transformation process and No.1 two of No. three main transformer electricity and No. four main transformer electricity
Number main transformer electricity situation is similar, and power-off section is located at No. three and No. four main transformer electricity opposite positions.
After the completion of four main transformer electricity are all transformed, the second bus will be accessed power grid and substation.
Below by the explanation of specific transformation process, the contents of the present invention are elaborated.
Have a power failure for the first time and construct:
The No.1 main transformer electricity busbar breaker of total drop 10kV is closed, and the incoming breaker of No. two main transformer electricity separates.
(a) the corresponding interval of No. two main transformers has a power failure and is grounded；
(b) No.1 main transformer interval breaker is divided to, two disconnecting switch distinguish division and combinations；
(c) control cabinet operation power of alterating and direct current disconnects；
(d) recycling need to remove part and adjacent air cells；
(e) telescopic joint part, which starts to remove, need to remove bus part；
(f) it removes secondary connecting cable, the interval GIS to control cabinet partial cables, remove tie-portion between cabinet；(g) basis
Drawing carries out bus transformation and connection, and carries out with the same phase study of frequency, the positioning of secondary control cabinet and secondary cable connection；This step
In, see Fig. 9, this GIS ac voltage withstanding test intended is used pressurizes with frequency with phase inverter series resonant equipment test principle, uses
220kV AC potentiometer directly measures at subject end and (prevents from holding and rise phenomenon).In Fig. 9, Ts: intermediate transformer；XL: adjustable compensation
Reactor；R: protective resistance；C1, C2 capacitive divider；CX: test item；PT:I mother or mother's II bus-bar potential transformer.Exchange
Pressure test program and result judgement
(1) according to on-site actual situations, test voltage is imported by sleeve of main transformer.(split-phase carries out, and by taking A phase as an example, test is set
Standby to be placed on the highway by the switch gear room GIS, not test (N.T.) is mutually grounded).
It is depressed into when test by 0 raisingThat is 73kV pressure resistance 5 minutes, then test voltage is boosted into Um i.e.
126kV is stopped 3 minutes, is finally risen to test voltage 184kV again and is stopped 1 minute to prevent from occurring test item during the test hitting
The risk that phenomenon leads to failure propagation and causes operation busbar grounding is worn, therefore Party A is needed to draft emergency plan.Work order before pressurizeing
The secondary staff in position uses from a secondary voltage signal side-draw of operation bus PT for test, and testing equipment elder generation sky rises to 50
~63KV carries out nuclear phase in 2# main transformer and testing equipment side with a phasing tester, it is ensured that the secondary voltage phase and pressurization of extraction
Side is consistent.The disconnecting link fracture voltage (backward voltage indicated value) shown on stringent monitoring testing equipment during test.
(2) judgement of test result:
1) test of major loop ac voltage withstanding passes through if without flashover or phenomena such as breakdown under pressure test in 1 minute.
2) ac voltage withstanding is forward and backward, and split-phase tests insulation resistance of main, before resistance to rear insulating resistance value must not be lower than pressure resistance
70%.
(h) gas chamber processing and routine test；(original equipment gas recovery carries out secondary use, needs to do before use
Purity and slug test)；
(i) equipment pressure test.
Pressure resistance and examination terminate, equipment power transmission.Power transmission state is that interval and upper master tape are electric, upper female newly-increased disconnecting switch point,
Earthing switch closes, transition short tube chamber inflated pressure is 2bar, and lower mother is not charged.
Then second of power operation, third time power operation are carried out, method and first time are substantially identical.
Ensure safe operation, staff has to comply with safety standard:
1. requiring on-site personnel, Safety helmets must be worn, wears work clothes footware, and carries out necessary safety alarming sign
Show；
2. work relevant to GIS dismounting must carry out in the case where ventilation, all door and windows should be at opening state,
Ventilation equipment should be opened；
3. using the dedicated SF6 gas concentration unit of DILO, the SF6 gas storage pressure in GIS device can be effectively recycled
It is reduced in SF6 air accumulator, so that SF6 gas be avoided to be discharged into atmosphere, SF6, which is discharged into atmosphere, will generate strong greenhouse effects,
Forbid being discharged directly to the atmosphere；
4. must have specified work responsible person, safety director on the scene in operation process, to every safety event handle
It closes, while suggesting that customers assignment personnel carry out safely instruction and supervision to our work progress；
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of single bus-bar operation transformation station remodeling method, it is characterised in that: substation includes at least two groups of main transformer electricity, respectively
No.1 main transformer electricity and No. two main transformer electricity, single busbar have two inlet wires, one mother and two disconnecting switch.The single bus-bar operation transformation station
Remodeling method includes the following steps:
(1) load of No. two main transformer electricity is moved into No.1 main transformer electricity；
(2) breaker between No. two main transformer electricity and single busbar is disconnected；Make No. two main transformer electricity power loss and is grounded；
(3) bus isolating switch for disconnecting No. two main transformer corresponding segments of single busbar, disconnects No. two main transformers and corresponds to sectionalized single busbar connection
Incoming breaker, and the sectionalized busbar is grounded；
(4) the single busbar equipment of No. two main transformer corresponding segments of removal, increases by the first segmentation double-bus relevant device, and items test is equal
It is qualified；
(5) No. two main transformer electric equipments are accessed, No. two main transformers are electrically accessed in the first segmentation double-bus on two mothers；
(6) breaker between No. two main transformer electricity and bus is closed；Make No. two main transformers are electric must be electric；
(7) to No.1 main transformer electricity and No. two main transformer electricity high and low pressure side nuclear phases, determine that nuclear phase is normal；
(8) load of No.1 main transformer electricity is moved into No. two main transformer electricity；
(9) breaker between the corresponding single busbar of No.1 main transformer electricity is disconnected；Make No.1 main transformer electricity power loss and is grounded；
(10) bus isolating switch for disconnecting single busbar No.1 main transformer corresponding segments, disconnects No. two main transformers and corresponds to sectionalized single busbar connection
Incoming breaker, and the sectionalized busbar is grounded；
(11) the single busbar equipment of removal No.1 main transformer corresponding segments increases the second segmentation double-bus relevant device, items test
It is qualified；
(12) is accessed by No.1 main transformer electric equipment, is closed for this part busbar charging with the bus connection switch of institute's band on the second sectionalized busbar
Breaker between upper No.1 main transformer electricity and double-bus, makes No.1 main transformer electricity work once electrified；
(13) No.1 main transformer electric loading is taken back into No.1 main transformer electricity；
(14) realize that double-bus loop-net operation, No.1 main transformer hang a female operation, No. two main transformers hang two female operations.
2. single bus-bar operation transformation station remodeling method according to claim 1, it is characterised in that: the substation further includes
The reforming mode and No.1 main transformer electricity and No. two of No. three main transformer electricity and No. four main transformer electricity, No. three main transformer electricity and No. four main transformer electricity
Main transformer electricity is identical, carries out the transformation of No. three main transformer electricity and No. four main transformer electricity afterwards in step (14).
3. single bus-bar operation transformation station remodeling method according to claim 2, it is characterised in that: the step (4), (11)
In relevant device include: one or more of control cabinet, cable of control cabinet, control cabinet secondary cable, gas chamber.
4. single bus-bar operation transformation station remodeling method according to claim 2, it is characterised in that: the correlation of the double-bus
Equipment includes four sections of incoming breakers, bus pipe, disconnecting switch.
5. single bus-bar operation transformation station remodeling method according to claim 3, it is characterised in that: first sectionalized busbar
The dismounting sequence of relevant device and the second sectionalized busbar relevant device are as follows: control cabinet secondary cable, cable of control cabinet, control
Cabinet, gas chamber.
6. the single bus-bar operation transformation station remodeling method according to any one of claim 2 to 5, it is characterised in that: described
When main transformer electric equipment in step (4), (11) is removed, the power supply of its light current is turned off.
7. single bus-bar operation transformation station remodeling method according to claim 3, it is characterised in that: the gas chamber is removed laggard
Row test, and gas indoor gas is recycled.
8. single bus-bar operation transformation station remodeling method according to claim 7, it is characterised in that: the test includes using
Preceding purity and slug test and equipment pressure test.
9. single bus-bar operation transformation station remodeling method according to any one of claim 1 to 5, it is characterised in that: described
It is equipped at the scene after main transformer electric equipment preprocessing.
10. single bus-bar operation transformation station remodeling method according to any one of claim 1 to 5, it is characterised in that: described
Transformation station input voltage is 110KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910440521.1A CN110445044B (en) | 2019-05-24 | 2019-05-24 | Transformation station transformation method for single-bus operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910440521.1A CN110445044B (en) | 2019-05-24 | 2019-05-24 | Transformation station transformation method for single-bus operation |
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| Publication Number | Publication Date |
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| CN110445044A true CN110445044A (en) | 2019-11-12 |
| CN110445044B CN110445044B (en) | 2020-11-13 |
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ID=68428224
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910440521.1A Active CN110445044B (en) | 2019-05-24 | 2019-05-24 | Transformation station transformation method for single-bus operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325236A (en) * | 2021-07-02 | 2021-08-31 | 山东钢铁股份有限公司 | Power transmission phase checking method for double-bus double-section wiring GIS cabinet power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169306A (en) * | 1983-03-17 | 1984-09-25 | 株式会社東芝 | Gas insulated switching device |
| JPS59194607A (en) * | 1983-04-19 | 1984-11-05 | 三菱電機株式会社 | Gas insulated switching device |
| JPH0847122A (en) * | 1994-08-04 | 1996-02-16 | Hitachi Ltd | Gas-insulated switchgear |
| CN202340065U (en) * | 2011-12-01 | 2012-07-18 | 四川电力设计咨询有限责任公司 | Double-row bus bar distributing structure for single-bus bar segmentation type GIS (Gas Insulated Switchgear) power distribution unit |
| CN203747256U (en) * | 2014-03-11 | 2014-07-30 | 中国电力工程顾问集团西南电力设计院 | 220 kV double-bus single-segment breaker single-row arranged arrangement structure |
| CN208062498U (en) * | 2018-05-04 | 2018-11-06 | 荆州市荆力工程设计咨询有限责任公司 | A kind of sectionalized single busbar connection configuration system for being conducive to increase outgoing line interval |
-
2019
- 2019-05-24 CN CN201910440521.1A patent/CN110445044B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169306A (en) * | 1983-03-17 | 1984-09-25 | 株式会社東芝 | Gas insulated switching device |
| JPS59194607A (en) * | 1983-04-19 | 1984-11-05 | 三菱電機株式会社 | Gas insulated switching device |
| JPH0847122A (en) * | 1994-08-04 | 1996-02-16 | Hitachi Ltd | Gas-insulated switchgear |
| CN202340065U (en) * | 2011-12-01 | 2012-07-18 | 四川电力设计咨询有限责任公司 | Double-row bus bar distributing structure for single-bus bar segmentation type GIS (Gas Insulated Switchgear) power distribution unit |
| CN203747256U (en) * | 2014-03-11 | 2014-07-30 | 中国电力工程顾问集团西南电力设计院 | 220 kV double-bus single-segment breaker single-row arranged arrangement structure |
| CN208062498U (en) * | 2018-05-04 | 2018-11-06 | 荆州市荆力工程设计咨询有限责任公司 | A kind of sectionalized single busbar connection configuration system for being conducive to increase outgoing line interval |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325236A (en) * | 2021-07-02 | 2021-08-31 | 山东钢铁股份有限公司 | Power transmission phase checking method for double-bus double-section wiring GIS cabinet power supply |
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