CN102638009A - Operation method for first-aid repair of 630A low-tension outgoing lines by by-pass switch - Google Patents
Operation method for first-aid repair of 630A low-tension outgoing lines by by-pass switch Download PDFInfo
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- CN102638009A CN102638009A CN2012100885792A CN201210088579A CN102638009A CN 102638009 A CN102638009 A CN 102638009A CN 2012100885792 A CN2012100885792 A CN 2012100885792A CN 201210088579 A CN201210088579 A CN 201210088579A CN 102638009 A CN102638009 A CN 102638009A
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Abstract
The invention discloses an operation method for first-aid repair of 630A low-tension outgoing lines by a by-pass switch, which includes: 1 inserting one cylindrical end of an incoming cable into a three-phase incoming line end of the by-pass switch; 2 fastening the incoming cable; 3 sleeving an insulating bush on an outgoing cable; 4 inserting one cylindrical end of the outgoing cable into a three-phase outgoing line end of the by-pass switch; 5 fastening the outgoing cable; 6 checking whether switching on or off of the by-pass switch is normal or not; 7 setting parameters of the by-pass switch; 8 detaching or switching off a spare-free low-tension switch; 9 fixedly connecting a duckbilled wiring device of the outgoing cable with cable connectors of various phases on an original circuit load side; 10 fixedly connecting a handheld wiring device of the incoming cable with a busbar of an original circuit; 11 stably fixing the outgoing cable with the incoming cable; and 12 switching on the by-pass switch to perform power transmission. As the by-pass switch is used for first-aid repair of the spare-free 630A low-tension switch, first-aid repair speed is high, first-aid repair spare mounting speed is high, required staff is less, and stable power supply to power distribution networks is guaranteed.
Description
Technical field
The present invention relates to be used in a kind of power distribution station rush to repair the method for operation of the by-pass switch of 630A low pressure outlet.
Background technology
No spare unit low tension switch mainly is meant following two types of low tension switches: one type is to put into operation the age early, stopped production the low tension switch of such model of manufacturer.Like totally 67 at neighbour station, 2 of case changes that Pudong District puts into operation and surpasses 20 years, the low tension switch of operation has 765 in standing, and totally 278 at the neighbour station, the case that put into operation between 15 years to 20 years become nearly 200, and the low tension switch that moves in standing has 4377.The most models of these low tension switches are older, near or surpass service life.Such model because manufacturer stops production causes to obtain spare unit.Another kind of being meant not at company's buying catalogue, the present low tension switch of not in stock again.The AH type low tension switch of Beijing Switch Factory for example, Pudong District is on totally 478 on net at present.Owing to do not have spare unit, bring very big hidden danger to operation.
Under the regular situation, surpass 20 years for putting into operation and take the technological transformation mode to change old equipment.But because fund for technical innovation is limited, most site apparatus still need exceed the time limit to move.In case these no spare unit switch generation defectives can not be moved, can only take improper mode such as direct-connected to supply power temporarily, rush to repair length not only consuming time, and direct-connected back can't distinguish all to situation such as sending payload, faults, greatly influence power supply safety.
Do not break down, need to change in case there is the spare unit low tension switch, take which kind of mode to rush to repair, restore electricity as early as possible the subject matter that is the consideration of operation department.
Based on this background, this project is attempted on the basis of the person, power grid security through present situation, characteristic, failure cause, emergency repair method, the substitute products of the no spare unit low tension switch of research, seeks optimum repairing prediction scheme.
Summary of the invention
The invention provides a kind of method of operation that is used to rush to repair the by-pass switch of 630A low pressure outlet, when by-pass switch can be in no spare unit 630A low tension switch fault, realize repairing fast, guarantee the distribution network stable power-supplying.
Be to realize above-mentioned purpose, the invention provides a kind of method of operation that is used to rush to repair the by-pass switch of 630A low pressure outlet, be characterized in that the method includes the steps of:
The cylindrical end that step 1, three installs the inlet wire cable of hand-held termination inserts respectively in the circular hole of by-pass switch device three-phase end of incoming cables;
Step 2, supporting screw and the pad of inlet wire cable insert respectively in the circular hole of by-pass switch device three-phase end of incoming cables, fastening three above-mentioned inlet wire cables that are provided with hand-held termination;
Distinguish sheathed three insulating sleeves on step 3, three outlet cables;
A cylindrical end of step 4, three outlet cables inserts respectively in the circular hole of by-pass switch device three-phase leading-out terminal;
Step 5, supporting screw and the pad of outlet cable insert in the circular hole of by-pass switch device three-phase leading-out terminal fastening three above-mentioned outlet cables respectively;
Whether branch, the combined floodgate of step 6, inspection by-pass switch device be normal, if, then the by-pass switch device is placed gate-dividing state, and jump to step 7, if not, then change the by-pass switch device of operate as normal, and jump to step 6;
The specification of the former no spare unit 630A low tension switch that step 7, basis are replaced, the parameter of setting by-pass switch device;
Step 8, remove former no spare unit 630A low tension switch or former no spare unit 630A low tension switch is placed gate-dividing state;
Each fastening connection of cable joint mutually of the duck termination of outlet cable and former line load side on step 9, the by-pass switch device leading-out terminal, and with the conductor that exposes on each cable of insulating sleeve wrapping;
The hand-held termination of inlet wire cable connects with the busbar of former circuit is fastening on step 10, the by-pass switch device end of incoming cables;
Step 11, outlet cable and inlet wire cable held stationary;
In the above-mentioned step 3, insulating sleeve is provided with by the outlet cable that an end of duck termination is sheathed goes into the outlet cable.
Above-mentioned step 8 also comprises: before removing former no spare unit 630A low tension switch, operating personnel carry out insulation protection work earlier.
Above-mentioned step 10 also comprises: before the inlet wire cable is handed termination and former circuit busbar is connected, remove the original insulating covering of connection place busbar earlier.
In the above-mentioned step 10, hand-held termination of inlet wire cable and former circuit busbar connection place, the insulating covering of its adjacent busbar need remain intact.
The present invention is used to rush to repair the method for operation of the by-pass switch of 630A low pressure outlet and compares with prior art; Its advantage is; The present invention adopts the by-pass switch device that no spare unit 630A low tension switch is rushed to repair and replacement work; Repairing speed is fast, and repairing spare unit installation rate is fast, need personnel few, guarantees the distribution network stable power-supplying.
Description of drawings
Fig. 1 is used to rush to repair the method flow diagram of method of operation of the by-pass switch of 630A low pressure outlet for the present invention.
Embodiment
Below in conjunction with accompanying drawing, further specify embodiments of the invention.
Be applicable to the by-pass switch of the method for operation of a kind of by-pass switch that is used to rush to repair the outlet of 630A low pressure of the present invention, it is used to exchange 50Hz, and setting current is from 160A to 400A, nominal insulation voltage 800V, and rated operational voltage 400V, and have isolation features.
As shown in Figure 1, the present invention is a kind of to be used to rush to repair the method for operation of the by-pass switch of 630A low pressure outlet, and the method includes the steps of:
Step 1, three installs the cylindrical end of inlet wire cable of hand-held termination by the by-pass switch device back side, inserts " A ", " B " of the by-pass switch device that is arranged in the by-pass switch device back side, the circular hole of " C " three-phase end of incoming cables respectively.The circular hole of this end of incoming cables runs through the front and back of by-pass switch device.The two ends of inlet wire cable are not for being: an end is made as cylindrical, and the other end is provided with hand-held termination.
Step 2, with the supporting screw of inlet wire cable and pad from by-pass switch device front; Insert respectively in the circular hole of by-pass switch device three-phase end of incoming cables; And be fixedly connected with three inlet wire cables respectively, make three install hand-held termination the inlet wire cable be fastened in the circular hole of end of incoming cables of by-pass switch device.
Distinguish sheathed three insulating sleeves on step 3, three outlet cables.The two ends of outlet cable are respectively: an end is made as cylindrical, and the other end is provided with the duck termination.
Above-mentioned insulating sleeve is provided with by the outlet cable that an end of duck termination is sheathed goes into the outlet cable.
A cylindrical end of step 4, three outlet cables inserts " A ", " B " of the by-pass switch device that is arranged in the by-pass switch device back side, the circular hole of " C " three-phase leading-out terminal respectively by the by-pass switch device back side.The circular hole of this leading-out terminal runs through the front and back of by-pass switch device.
Step 5, supporting screw and the pad of outlet cable insert respectively the circular hole of by-pass switch device three-phase leading-out terminal from by-pass switch device front; And be fixedly connected with three outlet cables respectively, fastening three outlet cables are fastened in the circular hole of leading-out terminal of by-pass switch device.
Whether branch, the combined floodgate of step 6, inspection by-pass switch device be normal, if then the by-pass switch device is placed gate-dividing state; And jump to step 7, if not, then change the by-pass switch device of operate as normal; Jump to step 6 again, proceed not have spare unit low tension switch repairing operation.
The specification of the former no spare unit 630A low tension switch that step 7, basis are replaced, the parameter of setting by-pass switch device; , make the by-pass switch device can satisfy the instructions for use of circuit.This parameter comprises specified limit short circuit breaking capacity Icu, specified operation short circuit breaking capacity Ics, overload protection, instantaneous protection, short time delay protection value etc.
Step 8, remove former no spare unit 630A low tension switch or former no spare unit 630A low tension switch is placed gate-dividing state.Before removing former no spare unit 630A low tension switch, operating personnel must carry out insulation protection work earlier.
Each fastening connection of cable joint mutually of the duck termination of outlet cable and former line load side on step 9, the by-pass switch device leading-out terminal, and wrap up each phase cable of former line load side with insulating sleeve, and the conductor that exposes on the outlet cable.
The original insulating covering of connection place busbar is removed by step 10, elder generation, and the hand-held termination with inlet wire cable on the by-pass switch device end of incoming cables connects with the busbar of former circuit is fastening again.
When the hand-held termination of inlet wire cable connects with the busbar of former circuit is fastening, hand-held termination of inlet wire cable and former circuit busbar connection place, the insulating covering of its adjacent busbar need remain intact.
The support that step 11, employing and outlet cable and inlet wire cable are complementary is avoided outlet cable and inlet wire cable held stationary outlet cable and inlet wire cable produce in stressed back and is waved.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (5)
1. method of operation that is used to rush to repair the by-pass switch of 630A low pressure outlet is characterized in that the method includes the steps of:
The cylindrical end that step 1, three installs the inlet wire cable of hand-held termination inserts respectively in the circular hole of by-pass switch device three-phase end of incoming cables;
Step 2, supporting screw and the pad of inlet wire cable insert respectively in the circular hole of by-pass switch device three-phase end of incoming cables, fastening three described inlet wire cables that are provided with hand-held termination;
Distinguish sheathed three insulating sleeves on step 3, three outlet cables;
A cylindrical end of step 4, three outlet cables inserts respectively in the circular hole of by-pass switch device three-phase leading-out terminal;
Step 5, supporting screw and the pad of outlet cable insert in the circular hole of by-pass switch device three-phase leading-out terminal fastening three described outlet cables respectively;
Whether branch, the combined floodgate of step 6, inspection by-pass switch device be normal, if, then the by-pass switch device is placed gate-dividing state, and jump to step 7, if not, then change the by-pass switch device of operate as normal, and jump to step 6;
The specification of the former no spare unit 630A low tension switch that step 7, basis are replaced, the parameter of setting by-pass switch device;
Step 8, remove former no spare unit 630A low tension switch or former no spare unit 630A low tension switch is placed gate-dividing state;
Each fastening connection of cable joint mutually of the duck termination of outlet cable and former line load side on step 9, the by-pass switch device leading-out terminal, and with the conductor that exposes on each cable of insulating sleeve wrapping;
The hand-held termination of inlet wire cable connects with the busbar of former circuit is fastening on step 10, the by-pass switch device end of incoming cables;
Step 11, outlet cable and inlet wire cable held stationary;
Step 12, completion by-pass switch device connect with distribution network, and the by-pass switch device closes a floodgate and send.
2. the method for operation that is used to rush to repair the by-pass switch of 630A low pressure outlet as claimed in claim 1 is characterized in that, in the described step 3, insulating sleeve is provided with by the outlet cable that an end of duck termination is sheathed goes into the outlet cable.
3. the method for operation that is used to rush to repair the by-pass switch of 630A low pressure outlet as claimed in claim 1 is characterized in that described step 8 also comprises: before removing former no spare unit 630A low tension switch, operating personnel carry out insulation protection work earlier.
4. the method for operation that is used to rush to repair the by-pass switch of 630A low pressure outlet as claimed in claim 1; It is characterized in that; Described step 10 also comprises: before the inlet wire cable is handed termination and former circuit busbar is connected, remove the original insulating covering of connection place busbar earlier.
5. the method for operation that is used to rush to repair the by-pass switch of 630A low pressure outlet as claimed in claim 1 is characterized in that, in the described step 10, and hand-held termination of inlet wire cable and former circuit busbar connection place, the insulating covering of its adjacent busbar need remain intact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210088579.2A CN102638009B (en) | 2012-03-30 | 2012-03-30 | Operation method for first-aid repair of 630A low-tension outgoing lines by by-pass switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210088579.2A CN102638009B (en) | 2012-03-30 | 2012-03-30 | Operation method for first-aid repair of 630A low-tension outgoing lines by by-pass switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102638009A true CN102638009A (en) | 2012-08-15 |
| CN102638009B CN102638009B (en) | 2014-12-24 |
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| CN201210088579.2A Active CN102638009B (en) | 2012-03-30 | 2012-03-30 | Operation method for first-aid repair of 630A low-tension outgoing lines by by-pass switch |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003032816A (en) * | 2001-07-09 | 2003-01-31 | Toshiba Eng Co Ltd | Assembling protective device for gas-insulated switch and wiring method of gas-insulated switch to power transmission circuit |
| CN101794973A (en) * | 2010-04-07 | 2010-08-04 | 绵阳电业局 | Live working method for replacing distribution transformer |
| CN102185260A (en) * | 2011-01-26 | 2011-09-14 | 河南省电力公司南阳供电公司 | A method for replacing a panel or a cubicle in a master control room by using a by-pass wiring method |
| CN102347173A (en) * | 2011-09-22 | 2012-02-08 | 上海市电力公司 | Bypass switch of low-voltage switch fault |
-
2012
- 2012-03-30 CN CN201210088579.2A patent/CN102638009B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003032816A (en) * | 2001-07-09 | 2003-01-31 | Toshiba Eng Co Ltd | Assembling protective device for gas-insulated switch and wiring method of gas-insulated switch to power transmission circuit |
| CN101794973A (en) * | 2010-04-07 | 2010-08-04 | 绵阳电业局 | Live working method for replacing distribution transformer |
| CN102185260A (en) * | 2011-01-26 | 2011-09-14 | 河南省电力公司南阳供电公司 | A method for replacing a panel or a cubicle in a master control room by using a by-pass wiring method |
| CN102347173A (en) * | 2011-09-22 | 2012-02-08 | 上海市电力公司 | Bypass switch of low-voltage switch fault |
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| CN102638009B (en) | 2014-12-24 |
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Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121108 |
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Effective date of registration: 20121108 Address after: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Address before: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant before: Shanghai Electric Power Corporation |
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