CN104716613B - De-icing method based on 500kV transmission line of electricity - Google Patents

De-icing method based on 500kV transmission line of electricity Download PDF

Info

Publication number
CN104716613B
CN104716613B CN201510161536.6A CN201510161536A CN104716613B CN 104716613 B CN104716613 B CN 104716613B CN 201510161536 A CN201510161536 A CN 201510161536A CN 104716613 B CN104716613 B CN 104716613B
Authority
CN
China
Prior art keywords
conductor
quadripartion
ice
phase
transmission line
Prior art date
Application number
CN201510161536.6A
Other languages
Chinese (zh)
Other versions
CN104716613A (en
Inventor
陆佳政
吴伟
方针
张红先
李波
赵纯
Original Assignee
国家电网公司
国网湖南省电力公司
国网湖南省电力公司防灾减灾中心
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 国家电网公司, 国网湖南省电力公司, 国网湖南省电力公司防灾减灾中心 filed Critical 国家电网公司
Priority to CN201510161536.6A priority Critical patent/CN104716613B/en
Publication of CN104716613A publication Critical patent/CN104716613A/en
Application granted granted Critical
Publication of CN104716613B publication Critical patent/CN104716613B/en

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/16Devices for removing snow or ice from lines or cables

Abstract

The invention discloses a kind of de-icing method based on 500kV transmission line of electricity, comprise the steps: (1), record strain section and conductor spacer quantity, optimize conductor spacer and realize sub-conductor all insulation;(2), test platform is built;(3), carry out A phase conductor ice-melt test, the high-voltage output end of movable DC ice melting device and earth terminal are connected respectively one or two in A phase quadripartion sub-conductor;(4), call through test ring current carries out the ice-melt test of A phase quadripartion sub-conductor;(5) open test power supply, connects remaining one by the high-voltage output end of movable DC ice melting device, and earth terminal connects any two in another root remaining or step 3, repeats step 4, until A phase conductor icing melts away completely;(6) repeat step 3~5, carry out B phase conductor ice-melt test;(7), repeat step 3~5, carry out C phase conductor ice-melt test.The present invention can meet the demand of 500kV transmission line de-icing capacity.

Description

De-icing method based on 500kV transmission line of electricity
Technical field
The invention belongs to electrical engineering technical field, particularly relate to a kind of de-icing method based on 500kV transmission line of electricity.
Background technology
Along with the demand of electric power is sharply increased by modern society, grid power transmission adopts remote Large Copacity mode of movement, and it is 500kV trunk power transmission network that Hunan defines electric pressure, and the span between adjacent shaft tower is very big;On the other hand, China the end of the year in 2007 to 2008 at the beginning of, the wire breaking and tower falling accident that the southern many provinces and cities in the whole nation cause because of sleet and snow ice weather causes massive losses to people's lives and national wealth, the capacity of deicing device is had higher requirement by this, the increase of ice-melt capacity will necessarily make the weight and volume of deicing device increase, not only involving great expense, also not readily portable at the scene, the restriction by on-the-spot Special complex landform also have impact on its ability resisting ice damage to a certain extent.
The commonly used quadripartion sub-conductor of exchange 500kV transmission line of electricity of current China, quadripartion sub-conductor will install a quadripartion conductor spacer at interval of 40 ~ 100 meters, spacing for keeping four root wires is constant and suppresses vibration, quadripartion conductor spacer domestic at present is metal material manufacture, it is difficult to keep the insulation between four root wires in strain section.
Summary of the invention
It is an object of the invention to provide a kind of capacity that can reduce deicing device on the basis of quadripartion sub-conductor all insulation, three phase line is realized by phase ice-melt, realize miniaturization and the portable design of deicing device, make the de-icing method based on 500kV transmission line of electricity in the more flexible supertension line being applied to big span of deicing device.
This de-icing method based on 500kV transmission line of electricity provided by the invention, comprises the steps:
(1), the span quantity that records in the strain section quantity of the 500kV each phase conductor of quadripartion transmission line of electricity to be rebuilt, each strain section, and the quantity of quadripartion conductor spacer between quadripartion sub-conductor in each span.It is equipped with the quadripartion all insulation conductor spacer equal with the quantity of the quadripartion conductor spacer recorded, it is achieved the quadripartion sub-conductor all insulation of 500kV quadripartion transmission line of electricity;
(2), building test platform, this test platform has the quadripartion sub-conductor of pressure regulator, power transformer, movable DC ice melting device, wine glass-shaped steel tower and 500kV quadripartion transmission line of electricity;
(3) the A phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the loop of joint test platform, according to the requirement to movable DC ice melting device capacity, its high-voltage output end connects one or two in A phase quadripartion sub-conductor, and corresponding earth terminal connects one or two that A phase quadripartion sub-conductor is other;
(4), the ring current of call through test platform, slowly boosted evenly by pressure regulator, until power transformer output voltage reaches the rated voltage of movable DC ice melting device.Keep voltage constant.Carry out the ice-melt test of A phase quadripartion sub-conductor, record ambient temperature and ice-melt time;
(5), when in step 3A phase, existence does not carry out the quadripartion sub-conductor of ice-melt test, the ring current of open test platform, the high-voltage output end of movable DC ice melting device or earth terminal are connected in A phase quadripartion sub-conductor and does not carry out in ice-melt test, the earth terminal of its correspondence or high-voltage output end are connected A phase quadripartion sub-conductor and does not carry out another root in ice-melt test or carried out two of ice-melt test.Repeat step 4, until A phase conductor icing melts away completely, the ring current of open test platform;
(6), carry out 500kV quadripartion transmission line of electricity B phase conductor ice-melt test, change test platform circuit connection repeat step 3~5, until B phase conductor icing melts away completely, the ring current of open test platform;
(7) the C phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the circuit connection changing test platform repeats step 3~5, until C phase conductor icing melts away completely, the ring current of open test platform, complete 500kV quadripartion transmission line of electricity A, B, C three-phase ice-melt.
In described step 1, quadripartion all insulation conductor spacer adopts epoxy resin insulation material to make.
Compared with prior art, the invention have the advantages that
1, create conditions for 500kV supertension all insulation quadripartion sub-conductor DC ice melting;
2, the present invention can achieve the Miniaturization Design of movable DC ice melting device capacity and volume, is suitable for the alpine terrain of complexity;
3, reducing the capacity of movable DC ice melting device and can ensure the safety of test, in 500kV transmission system, the most mental retardation of ice melting current of holding of movable DC ice melting device is reduced to the 1/4 of legacy equipment;
4, method is simple, it is not necessary to circuit is transformed on a large scale;
5, the present invention is suitable for being generalized to the DC ice melting of extra-high voltage many oidiospores wire.
Detailed description of the invention
Embodiment 1 liang of root wire ice-melt simultaneously:
This de-icing method based on 500kV transmission line of electricity of the present invention, comprises the steps:
(1), the span quantity that records in the strain section quantity of the 500kV each phase conductor of quadripartion transmission line of electricity to be rebuilt, each strain section, and the quantity of quadripartion conductor spacer between quadripartion sub-conductor in each span.It is equipped with the quadripartion all insulation conductor spacer equal with the quantity of the quadripartion conductor spacer recorded, it is achieved the quadripartion sub-conductor all insulation of 500kV quadripartion transmission line of electricity;
(2), building test platform, this test platform has the quadripartion sub-conductor of pressure regulator, power transformer, movable DC ice melting device, wine glass-shaped steel tower and 500kV quadripartion transmission line of electricity;
(3) the A phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the loop of joint test platform, according to the requirement to movable DC ice melting device capacity, its high-voltage output end connects the 1st root wire in A phase quadripartion sub-conductor, and corresponding earth terminal connects the 2nd root wire of A phase quadripartion sub-conductor;
(4), the ring current of call through test platform, slowly boosted evenly by pressure regulator, until power transformer output voltage reaches the rated voltage of movable DC ice melting device.Keep voltage constant.Carry out the ice-melt test of A phase quadripartion sub-conductor, record ambient temperature and ice-melt time;
(5), the ring current of open test platform, the high-voltage output end of movable DC ice melting device or earth terminal are connected the 3rd root wire of A phase quadripartion sub-conductor, the earth terminal of its correspondence or high-voltage output end are connected the 4th root wire of A phase quadripartion sub-conductor.Repeat step 4, until A phase conductor icing melts away completely, the ring current of open test platform;
(6), carry out 500kV quadripartion transmission line of electricity B phase conductor ice-melt test, change test platform circuit connection repeat step 3~5, until B phase conductor icing melts away completely, the ring current of open test platform;
(7) the C phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the circuit connection changing test platform repeats step 3~5, until C phase conductor icing melts away completely, the ring current of open test platform, complete 500kV quadripartion transmission line of electricity A, B, C three-phase ice-melt.
Quadripartion all insulation conductor spacer in step 1 of the present invention adopts epoxy resin insulation material to make.
The ice-melt simultaneously of embodiment 2 three root wire:
This de-icing method based on 500kV transmission line of electricity of the present invention, comprises the steps:
(1), the span quantity that records in the strain section quantity of the 500kV each phase conductor of quadripartion transmission line of electricity to be rebuilt, each strain section, and the quantity of quadripartion conductor spacer between quadripartion sub-conductor in each span.It is equipped with the quadripartion all insulation conductor spacer equal with the quantity of the quadripartion conductor spacer recorded, it is achieved the quadripartion sub-conductor all insulation of 500kV quadripartion transmission line of electricity;
(2), building test platform, this test platform has the quadripartion sub-conductor of pressure regulator, power transformer, movable DC ice melting device, wine glass-shaped steel tower and 500kV quadripartion transmission line of electricity;
(3) the A phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the loop of joint test platform, according to the requirement to movable DC ice melting device capacity, its high-voltage output end connects the 1st and the 2nd root wire in A phase quadripartion sub-conductor, and corresponding earth terminal connects the 3rd root wire of A phase quadripartion sub-conductor;
(4), the ring current of call through test platform, slowly boosted evenly by pressure regulator, until power transformer output voltage reaches the rated voltage of movable DC ice melting device.Keep voltage constant.Carry out the ice-melt test of A phase quadripartion sub-conductor, record ambient temperature and ice-melt time;
(5), the ring current of open test platform, the high-voltage output end of movable DC ice melting device or earth terminal are connected the 4th root wire of A phase quadripartion sub-conductor, the earth terminal of its correspondence or high-voltage output end are connected the 1st and the 2nd root wire of A phase quadripartion sub-conductor.Repeat step 4, until A phase conductor icing melts away completely, the ring current of open test platform;
(6), carry out 500kV quadripartion transmission line of electricity B phase conductor ice-melt test, change test platform circuit connection repeat step 3~5, until B phase conductor icing melts away completely, the ring current of open test platform;
(7) the C phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the circuit connection changing test platform repeats step 3~5, until C phase conductor icing melts away completely, the ring current of open test platform, complete 500kV quadripartion transmission line of electricity A, B, C three-phase ice-melt.
Quadripartion all insulation conductor spacer in step 1 of the present invention adopts epoxy resin insulation material to make.
The ice-melt simultaneously of embodiment 3 four root wire:
This de-icing method based on 500kV transmission line of electricity of the present invention, comprises the steps:
(1), the span quantity that records in the strain section quantity of the 500kV each phase conductor of quadripartion transmission line of electricity to be rebuilt, each strain section, and the quantity of quadripartion conductor spacer between quadripartion sub-conductor in each span.It is equipped with the quadripartion all insulation conductor spacer equal with the quantity of the quadripartion conductor spacer recorded, it is achieved the quadripartion sub-conductor all insulation of 500kV quadripartion transmission line of electricity;
(2), building test platform, this test platform has the quadripartion sub-conductor of pressure regulator, power transformer, movable DC ice melting device, wine glass-shaped steel tower and 500kV quadripartion transmission line of electricity;
(3) the A phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the loop of joint test platform, according to the requirement to movable DC ice melting device capacity, its high-voltage output end connects the 1st and the 2nd root wire in A phase quadripartion sub-conductor, and corresponding earth terminal connects the 3rd and the 4th root wire of A phase quadripartion sub-conductor;
(4), the ring current of call through test platform, slowly boosted evenly by pressure regulator, until power transformer output voltage reaches the rated voltage of movable DC ice melting device.Keep voltage constant.Carry out the ice-melt test of A phase quadripartion sub-conductor, record ambient temperature and ice-melt time, until A phase conductor icing melts away completely, the ring current of open test platform;
(5), carry out 500kV quadripartion transmission line of electricity B phase conductor ice-melt test, change test platform circuit connection repeat step 3~5, until B phase conductor icing melts away completely, the ring current of open test platform;
(6) the C phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the circuit connection changing test platform repeats step 3~5, until C phase conductor icing melts away completely, the ring current of open test platform, complete 500kV quadripartion transmission line of electricity A, B, C three-phase ice-melt.
Quadripartion all insulation conductor spacer in step 1 of the present invention adopts epoxy resin insulation material to make.
Through long-term test record, ice melting current all can be reduced to by above-described embodiment the 1/4 of conventional apparatus ice melting current.

Claims (2)

1., based on a de-icing method for 500kV transmission line of electricity, comprise the steps:
(1), the span quantity that records in the strain section quantity of the 500kV each phase conductor of quadripartion transmission line of electricity to be rebuilt, each strain section, and the quantity of quadripartion conductor spacer between quadripartion sub-conductor in each span;
It is equipped with the quadripartion all insulation conductor spacer equal with the quantity of the quadripartion conductor spacer recorded, it is achieved the quadripartion sub-conductor all insulation of 500kV quadripartion transmission line of electricity;
(2), building test platform, this test platform has the quadripartion sub-conductor of pressure regulator, power transformer, movable DC ice melting device, wine glass-shaped steel tower and 500kV quadripartion transmission line of electricity;
(3) the A phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the loop of joint test platform, according to the requirement to movable DC ice melting device capacity, its high-voltage output end connects one or two in A phase quadripartion sub-conductor, and corresponding earth terminal connects one or two that A phase quadripartion sub-conductor is other;
(4), the ring current of call through test platform, slowly boosted evenly by pressure regulator, until power transformer output voltage reaches the rated voltage of movable DC ice melting device, keep voltage constant, carry out the ice-melt test of A phase quadripartion sub-conductor, record ambient temperature and ice-melt time;
(5), when in step 3A phase, existence does not carry out the quadripartion sub-conductor of ice-melt test, the ring current of open test platform, the high-voltage output end of movable DC ice melting device or earth terminal are connected in A phase quadripartion sub-conductor and does not carry out in ice-melt test, the earth terminal of its correspondence or high-voltage output end are connected A phase quadripartion sub-conductor do not carry out another root in ice-melt test or carried out two of ice-melt test, repeat step 4, until A phase conductor icing melts away completely, the ring current of open test platform;
(6), carry out 500kV quadripartion transmission line of electricity B phase conductor ice-melt test, change test platform circuit connection repeat step 3~5, until B phase conductor icing melts away completely, the ring current of open test platform;
(7) the C phase conductor ice-melt test of 500kV quadripartion transmission line of electricity, is carried out, the circuit connection changing test platform repeats step 3~5, until C phase conductor icing melts away completely, the ring current of open test platform, complete 500kV quadripartion transmission line of electricity A, B, C three-phase ice-melt.
2. the de-icing method based on 500kV transmission line of electricity according to claim 1, it is characterised in that: in described step 1, quadripartion all insulation conductor spacer adopts epoxy resin insulation material to make.
CN201510161536.6A 2015-04-07 2015-04-07 De-icing method based on 500kV transmission line of electricity CN104716613B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510161536.6A CN104716613B (en) 2015-04-07 2015-04-07 De-icing method based on 500kV transmission line of electricity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510161536.6A CN104716613B (en) 2015-04-07 2015-04-07 De-icing method based on 500kV transmission line of electricity

Publications (2)

Publication Number Publication Date
CN104716613A CN104716613A (en) 2015-06-17
CN104716613B true CN104716613B (en) 2016-07-06

Family

ID=53415690

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510161536.6A CN104716613B (en) 2015-04-07 2015-04-07 De-icing method based on 500kV transmission line of electricity

Country Status (1)

Country Link
CN (1) CN104716613B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105572029B (en) * 2016-03-25 2018-02-02 中国南方电网有限责任公司超高压输电公司贵阳局 The method that ground wire produces white crystals corrosion when simulating 500kV earth wire of power transmission line ice-melts
CN109103806B (en) * 2018-08-24 2020-01-24 四川大学 Online anti-icing control method for self-melting ice wire embedded with insulating material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101409438B (en) * 2008-07-25 2011-10-05 中国电力工程顾问集团西北电力设计院 Ice-melting method suitable for transmission line with multiple fission conductor
CN101710683B (en) * 2009-12-25 2012-10-03 重庆大学 Intelligent circulation anti-icing method for transmitting current by split lead
CN103390874A (en) * 2013-07-24 2013-11-13 国家电网公司 Deicing method for deicing optical fiber composite overhead ground wire wound by insulated wires
CN104332928B (en) * 2014-11-20 2016-08-24 国家电网公司 Split conductor economic current anti-icing and deicing method

Also Published As

Publication number Publication date
CN104716613A (en) 2015-06-17

Similar Documents

Publication Publication Date Title
CN101272041B (en) Wire-protecting and de-icing method of unit type high tension power line
CN205067511U (en) Special resistive connection ice anemometry sensor heating system of anemometry equipment
CN100511899C (en) AC line-feeding deicing connection plan for current-exchanging station
CN106300655A (en) Intelligent distribution network open air open circuit supervising device
CN101478244B (en) Voltage falling generator for wind power electricity generation
CN204156540U (en) A kind of solar module ice melting system
CN202013446U (en) OPGW (optical fiber composite overhead ground wire) optical cable insulation residual cable rack used in 500kV lines
CN106300199B (en) A kind of ice melting system that output current is automatically adjusted according to icing line temperature
CN103414114B (en) Drawer-type intelligent comprehensive low-voltage distribution JP cabinet
CN102565597B (en) Dynamic power transmission line capacity estimation method applying synchronized phasor technology
CN203434619U (en) Novel transformer neutral-point ground resistor cabinet apparatus
CN201398029Y (en) Main wiring structure capable of reducing scope of power failure of 220kVGIS substation
CN102522161B (en) Insulator with temperature monitoring function
CN203967479U (en) Hook type earth connection
CN101409438B (en) Ice-melting method suitable for transmission line with multiple fission conductor
Rahman et al. Possibility of power tapping from composite AC–DC power transmission lines
CN101242087A (en) Ice fusion method for power transmission line
CN101847856A (en) Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification
CN102227074A (en) Power transmission line deicing antifreeze system
CN202930884U (en) Ice-melting short circuit fitting
CN102306920A (en) Anti-oscillation arrangement and configuration method for phase-to-phase spacers of ultrahigh-voltage compact power transmission line
CN102570369B (en) Method for designing direct current thawing device with special-purpose converter transformer
CN204439667U (en) A kind of portable type current transformer testing clamp
CN103296629A (en) Ground wire DC (direct current) deicing method based on discharge gap insulator
CN101459327B (en) Automatic ice melting method for multiple division electricity transmission line and special switch thereof

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model