CN103078268A - Uninterrupted power overhauling method of 10kV cables between two annular net cabinets - Google Patents
Uninterrupted power overhauling method of 10kV cables between two annular net cabinets Download PDFInfo
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- CN103078268A CN103078268A CN2012105985566A CN201210598556A CN103078268A CN 103078268 A CN103078268 A CN 103078268A CN 2012105985566 A CN2012105985566 A CN 2012105985566A CN 201210598556 A CN201210598556 A CN 201210598556A CN 103078268 A CN103078268 A CN 103078268A
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Abstract
The invention discloses an uninterrupted power overhauling method of 10kV cables between two annular net cabinets. According to the method, when 10kV cable circuits between the two annular net cabinets are abnormal and need to be maintained, a bypass connecting device is paved at the ground, the bypass connecting device replaces underground cables for supplying power to the annular net cabinets, and the uninterrupted power overhauling goal is reached. The uninterrupted power overhauling method has the advantages that users are enabled to carry out overhauling on the 10kV cable circuits between the two annular net cabinets under the condition with the uninterrupted power supply, the power failure of the users is avoided, the power supply reliability is improved, and the overhauling work efficiency is improved.
Description
Technical field
The present invention relates to a kind of 10kV power distribution network repair method, relate in particular to the service without power-off method of 10kV cable line between a kind of two ring main units.
Background technology
In recent years, along with economic development is rapid, the sustainable growth of power consumption, so that quality power is increasing for the reply social influence.Yet in the 10kV power distribution network, the 10kV cable line that often has between two ring main units breaks down.
In case the 10kV cable line between two ring main units breaks down, in order to guarantee the Electrical Safety of user between two ring main units, need in time circuit to be overhauled, and all adopt at present the cable line between two ring main units is carried out interruption maintenance, so not only enlarge power failure range, but also reduced power supply reliability.
Summary of the invention
The service without power-off method that the object of the invention is to overcome the defective of prior art and 10kV cable line between a kind of two ring main units is provided.
The object of the present invention is achieved like this:
The service without power-off method of 10kV cable line between a kind of two ring main units of the present invention, two ring main units comprise mains side ring main unit and power side ring main unit, described service without power-off method relies on bypass connecting device to realize, this bypass connecting device comprises two connecting device for flexible cables and by-pass switch, cable termination and plug-in snap joint that described connecting device for flexible cable comprises flexible cable and is located at its two ends, described service without power-off method may further comprise the steps:
S1: the plug-in snap joint of two connecting device for flexible cables is plugged on respectively on the inlet-outlet sleeve of by-pass switch, to form bypass connecting device;
S2: standby spacing switch and the by-pass switch of confirming two ring main units disconnect;
S3: the cable termination at bypass connecting device two ends is plugged in separately on the cable sleeve of standby spacing of mains side ring main unit and power side ring main unit;
S4: the standby spacing switch of power turn-on side and power side ring main unit;
S5: after by-pass switch both sides nuclear phase is correct, pull open the standby spacing switch of mains side and power side ring main unit, by-pass switch closes;
S6: the standby spacing switch of first power turn-on side ring main unit, the standby spacing switch of the power side of closing again ring main unit puts bypass connecting device into operation, and monitors the electric current in the bypass connecting device;
S7: the switch that disconnects Awaiting Overhaul cable line both sides;
S8: implement the cable line maintenance, put into operation after finishing;
S9: the standby spacing switch of order deenergization side, power transmission side ring main unit;
S10: remove bypass connecting device.
Service without power-off method of the present invention is overhauled 10kV cable line between two ring main units in the continual situation of assurance customer power supply, has avoided the user is had a power failure, and has improved power supply reliability, has improved the operating efficiency of maintenance.
Description of drawings
Fig. 1 is the structural representation with the matching used cable termination of European ring main unit.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
The service without power-off method of 10kV cable line between the present invention's two ring main units, rely on bypass connecting device to realize, this bypass connecting device comprises two connecting device for flexible cables and by-pass switch, cable termination and plug-in snap joint that connecting device for flexible cable comprises flexible cable and is located at its two ends, two ring main units comprise mains side ring main unit and power side ring main unit.
Service without power-off method of the present invention may further comprise the steps:
S1: the plug-in snap joint of two connecting device for flexible cables is plugged on respectively on the inlet-outlet sleeve of by-pass switch, to form bypass connecting device;
S2: standby spacing switch and the by-pass switch of confirming two ring main units disconnect;
S3: the cable termination at bypass connecting device two ends is plugged in separately on the cable sleeve of standby spacing of mains side ring main unit and power side ring main unit;
S4: the standby spacing switch of power turn-on side and power side ring main unit;
S5: after by-pass switch both sides nuclear phase is correct, pull open the standby spacing switch of mains side and power side ring main unit, by-pass switch closes;
S6: the standby spacing switch of first power turn-on side ring main unit, the standby spacing switch of the power side of closing again ring main unit puts bypass connecting device into operation, and monitors the electric current in the bypass connecting device;
S7: the switch that disconnects Awaiting Overhaul cable line both sides;
S8: implement the cable line maintenance, put into operation after finishing;
S9: the standby spacing switch of order deenergization side, power transmission side ring main unit;
S10: remove bypass connecting device.
Because the space in European looped network cabinet wire hole is less, and the volume of the cable termination that is integrated with the flexible cable sealing is larger, can't enter European ring main unit by entrance hole smoothly, the difficulty increase that causes connecting device for flexible cable to be connected with ring main unit.
When if ring main unit is European ring main unit, cable termination adopts as shown in Figure 1 structure, and this cable termination comprises T-shaped sleeve pipe 2, is located at cable connecting terminal 31 and the insulator seal plug 4 of cable 32, wherein:
T-shaped sleeve pipe 2 comprises transverse pipe section 21 and the vertical duct section 22 that is interconnected, and is square opening 23 at the inner chamber of the intersection of transverse pipe section 21 and vertical duct section 22;
The pedestal 11 of cable sleeve is plugged in the left side of transverse pipe section 21, and bolt 12 transverse horizontal place transverse pipe section 21;
Cable sleeve comprises pedestal 11 and is located at the bolt 12 of pedestal 11 front ends.
The insertion method of cable termination and cable sleeve is as follows:
First will be with the cable 32 of cable connecting terminal 31 from European feeder pillar, introduce in the entrance hole of ring main unit, then its lower port from T-shaped sleeve pipe 2 vertical duct sections 22 is inserted, so that cable connecting terminal 31 is positioned at square opening 23, be plugged on the pedestal 11 of cable sleeve at the left side port with T-shaped sleeve pipe 2 transverse pipe sections 21, so that the bolt 12 of pedestal 11 front ends is set in cable connecting terminal 31 and is positioned at transverse pipe section 21, at last insulator seal plug 4 is plugged in the right side port of transverse pipe section 21, and the front end that makes bolt 12 is rotatably connected in the internal thread hole 41, namely finished thus cable termination of the present invention and European feeder pillar, the connection of ring main unit cable sleeve.
Above embodiment is only for explanation the present invention's, but not limitation of the present invention, person skilled in the relevant technique, in the situation that do not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (1)
1. the service without power-off method of 10kV cable line between a ring main unit, two ring main units comprise mains side ring main unit and power side ring main unit, it is characterized in that, described service without power-off method relies on bypass connecting device to realize, this bypass connecting device comprises two connecting device for flexible cables and by-pass switch, cable termination and plug-in snap joint that described connecting device for flexible cable comprises flexible cable and is located at its two ends, described service without power-off method may further comprise the steps:
S1: the plug-in snap joint of two connecting device for flexible cables is plugged on respectively on the inlet-outlet sleeve of by-pass switch, to form bypass connecting device;
S2: standby spacing switch and the by-pass switch of confirming two ring main units disconnect;
S3: the cable termination at bypass connecting device two ends is plugged in separately on the cable sleeve of standby spacing of mains side ring main unit and power side ring main unit;
S4: the standby spacing switch of power turn-on side and power side ring main unit;
S5: after by-pass switch both sides nuclear phase is correct, pull open the standby spacing switch of mains side and power side ring main unit, by-pass switch closes;
S6: the standby spacing switch of first power turn-on side ring main unit, the standby spacing switch of the power side of closing again ring main unit puts bypass connecting device into operation, and monitors the electric current in the bypass connecting device;
S7: the switch that disconnects Awaiting Overhaul cable line both sides;
S8: implement the cable line maintenance, put into operation after finishing;
S9: the standby spacing switch of order deenergization side, power transmission side ring main unit;
S10: remove bypass connecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105985566A CN103078268A (en) | 2012-12-28 | 2012-12-28 | Uninterrupted power overhauling method of 10kV cables between two annular net cabinets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105985566A CN103078268A (en) | 2012-12-28 | 2012-12-28 | Uninterrupted power overhauling method of 10kV cables between two annular net cabinets |
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| CN103078268A true CN103078268A (en) | 2013-05-01 |
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| CN2012105985566A Pending CN103078268A (en) | 2012-12-28 | 2012-12-28 | Uninterrupted power overhauling method of 10kV cables between two annular net cabinets |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812041A (en) * | 2014-02-21 | 2014-05-21 | 国网湖南省电力公司带电作业中心 | Method for overhauling ring main unit of 10kV cable circuit without switching power supply off |
| CN104979791A (en) * | 2014-04-14 | 2015-10-14 | 袁茂银 | Cable well |
| CN105098648A (en) * | 2015-08-24 | 2015-11-25 | 国网天津市电力公司 | Short-time power-cut operation method for cable line between two ring main units |
| CN106451196A (en) * | 2016-10-10 | 2017-02-22 | 国网天津市电力公司 | Operation and verification method for knife switches on two sides of bus-tie switch in bus overhaul process |
| CN106451220A (en) * | 2016-12-01 | 2017-02-22 | 华北电力科学研究院有限责任公司 | Bypass equipment and method for live replacement of equipment on same-tower multi-loop pole tower |
| CN111181063A (en) * | 2020-03-02 | 2020-05-19 | 国网湖北省电力有限公司宜昌供电公司 | Novel bypass cable operation method applied to ring main unit of distribution network line |
| CN111884128A (en) * | 2020-08-21 | 2020-11-03 | 广州德晟电力科技有限公司 | 10kV distribution line uninterrupted repair wire device and repair method thereof |
| CN112242666A (en) * | 2020-09-29 | 2021-01-19 | 浙江大有实业有限公司带电作业分公司 | Method for replacing outgoing cable of line with radial structure |
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| JPH06276635A (en) * | 1993-03-18 | 1994-09-30 | Kawasoo Tekuseru Kk | Method of construction for bypass of distribution line using track current limitting device and track current limitting device thereof |
| CN101552434A (en) * | 2008-12-12 | 2009-10-07 | 河南省电力公司信阳供电公司 | Bypass current working method |
| CN101888070A (en) * | 2009-05-15 | 2010-11-17 | 上海市南电力工程有限公司 | 10KV bypass cable operation method |
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2012
- 2012-12-28 CN CN2012105985566A patent/CN103078268A/en active Pending
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| JPH06276635A (en) * | 1993-03-18 | 1994-09-30 | Kawasoo Tekuseru Kk | Method of construction for bypass of distribution line using track current limitting device and track current limitting device thereof |
| CN101552434A (en) * | 2008-12-12 | 2009-10-07 | 河南省电力公司信阳供电公司 | Bypass current working method |
| CN101888070A (en) * | 2009-05-15 | 2010-11-17 | 上海市南电力工程有限公司 | 10KV bypass cable operation method |
Non-Patent Citations (1)
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| 牛捷: "10kV电缆线路不停电作业旁路***研究", 《中国电业（技术版）》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812041A (en) * | 2014-02-21 | 2014-05-21 | 国网湖南省电力公司带电作业中心 | Method for overhauling ring main unit of 10kV cable circuit without switching power supply off |
| CN104979791A (en) * | 2014-04-14 | 2015-10-14 | 袁茂银 | Cable well |
| CN105098648A (en) * | 2015-08-24 | 2015-11-25 | 国网天津市电力公司 | Short-time power-cut operation method for cable line between two ring main units |
| CN106451196A (en) * | 2016-10-10 | 2017-02-22 | 国网天津市电力公司 | Operation and verification method for knife switches on two sides of bus-tie switch in bus overhaul process |
| CN106451220A (en) * | 2016-12-01 | 2017-02-22 | 华北电力科学研究院有限责任公司 | Bypass equipment and method for live replacement of equipment on same-tower multi-loop pole tower |
| CN111181063A (en) * | 2020-03-02 | 2020-05-19 | 国网湖北省电力有限公司宜昌供电公司 | Novel bypass cable operation method applied to ring main unit of distribution network line |
| CN111181063B (en) * | 2020-03-02 | 2021-09-10 | 国网湖北省电力有限公司宜昌供电公司 | Novel bypass cable operation method applied to ring main unit of distribution network line |
| CN111884128A (en) * | 2020-08-21 | 2020-11-03 | 广州德晟电力科技有限公司 | 10kV distribution line uninterrupted repair wire device and repair method thereof |
| CN111884128B (en) * | 2020-08-21 | 2021-07-06 | 广州德晟电力科技有限公司 | 10kV distribution line uninterrupted repair wire device and repair method thereof |
| CN112242666A (en) * | 2020-09-29 | 2021-01-19 | 浙江大有实业有限公司带电作业分公司 | Method for replacing outgoing cable of line with radial structure |
| CN112242666B (en) * | 2020-09-29 | 2022-04-19 | 浙江大有实业有限公司带电作业分公司 | Method for replacing outgoing cable of line with radial structure |
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Application publication date: 20130501 |