CN106159798A - A kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method - Google Patents
A kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method Download PDFInfo
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- CN106159798A CN106159798A CN201610704382.5A CN201610704382A CN106159798A CN 106159798 A CN106159798 A CN 106159798A CN 201610704382 A CN201610704382 A CN 201610704382A CN 106159798 A CN106159798 A CN 106159798A
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- ice
- melt
- ground wire
- parallel
- series
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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Abstract
The invention provides a kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method; described method is applicable to single double back joint line, it usually needs determines ice-melt section, determine ice-melt length, determine ice-melt direct current power source voltage, select to have the ground insulator string of suitable mechanical strength and determine its guard band.If having at least two ice-melt section, then by two of each ice-melt section neighbouring common ground wires, or a common ground wire and thoroughly does away with, and edge optical power grounded waveguide is end to end to be connected in parallel, composition parallel circuit, being got up by each parallel circuit in series, the two ends of series circuit are connected respectively to ice-melt DC source the two poles of the earth again.Determine ice-melt section, need the common ground wire of ice-melt ice-melt length, determine ice-melt direct current power source voltage, select there is the ground insulator string of suitable mechanical strength and determine its guard band.After the present invention uses " connection in series-parallel mixing " novel de-icing technology, on the premise of ensureing that transmission line of electricity safety, reliability do not reduce, ground wire icing problem can be efficiently solved.
Description
Technical field
The present invention relates to work transmission line ground wire deicing field, particularly a kind of transmission line of electricity connection in series-parallel mixing ground wire melts
Ice method.
Background technology
Air is abnormal, and natural disaster takes place frequently, and low temperature sleet congeals disaster, causes electric grid large area power cut, makes national economy
And people's lives are all severely impacted.For " building the electrical network that the people are relieved ", power department improves the construction mark of electrical network
Standard, starts de-icing technology research and application.
Coming into operation of deicing device effectively prevent down the generation of tower, line-outage contingency.Ice-melt at present is primarily directed to lead
Line is carried out, and ground wire is due to the restriction (using graded insulation or direct grounding way) of service condition, and ice-melt DC source electricity
Press the problems such as high, device fabrication difficulty that ice-melt is not carried out.But, common ground wire becomes a ring of transmission line of electricity most fragile
Joint, icing causes commonly line loss bad the most at first or sliding, causes line tripping to stop transport.
Therefore, it is achieved common ground wire DC ice melting, to improving Anti-icing of Transmission Lines ability, ensure that electric network reliability has ten
Divide important meaning.
Summary of the invention
For solving the problems referred to above, the invention provides a kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method, including such as
Lower step:
S1: determine ice-melt section, ice-melt length, ice-melt direct current power source voltage, selects the ground insulator with suitable mechanical strength
Go here and there and determine its guard band.
S2: if having an ice-melt section, then by two of this ice-melt section neighbouring common ground wires, or one commonly
Line and one thoroughly does away with that edge optical power grounded waveguide is end to end is connected in parallel, and two parallel connected end are connected respectively to ice-melt DC source two
Pole；If having at least two ice-melt section, then by two of each ice-melt section neighbouring common ground wires, or a common ground wire
Thoroughly do away with that edge optical power grounded waveguide OPGW is end to end is connected in parallel with one, form parallel circuit, then by each parallel circuit string
Connection gets up, and the two ends of series circuit are connected respectively to ice-melt DC source the two poles of the earth.
S3: fix common ground wire or insulating optical fiber composite ground wire by ground insulator string at the cross-arm of anchor support,
And under using ground insulator string every common ground wire or insulated compound optical fiber to be drawn respectively, and it is connected to grounding switch；Defeated
When electric line is properly functioning, common ground wire or the insulated compound optical ground wire grounding switch ground connection by Guan Bi, the when of ice-melt
Grounding switch is opened, and common ground wire or insulated compound optical ground wire insulation against ground, the when of ice-melt, grounding switch is opened.
S4: arrange support insulator along tower body short transverse in anchor support side, the ice melting electric cable of an ice-melt is by propping up
Post insulator is fixed, and when transmission line of electricity is properly functioning, ice melting electric cable one end is fixed on steel tower, and the other end is positioned at steel tower cross-arm
In the cable disk at place, when needing ice-melt, ice melting electric cable one end is connected on the insulation column that is connected with grounding switch, the other end
The interflow wire clamp being then connected on wire, ice melting electric cable obtains electric, produces ice melting current so that common in connection in series-parallel ice-melt loop
Ground wire or insulated compound optical fiber ice-melt.
Further, in S1 according to ice-melt direct current power source voltage, select according to load, material requirements and mounting means to have
The ground insulator string of suitable mechanical strength.
Further, S1 determines the guard band of ground wire insulator chain according to ice-melt direct current power source voltage.
The invention have the benefit that
Compared with prior art, the invention have the advantages that
1, the present invention is applicable to the situation that single ground wire current-carrying capacity ground wire ice melting current in parallel with single loop two in double loop mates.
2, the present invention is connected by the single ground wire in double loop after single loop two ground line parallel again, it is achieved unilateral one
And segmentation ice-melt.
3, decrease ice-melt section partition, save the ice-melt patching operations time, improve ice-melt efficiency, can be effectively
Solve ground wire icing problem.
Accompanying drawing explanation
Fig. 1 is the common ground wire connection in series-parallel schematic diagram of the transmission line of electricity in the present invention.
Fig. 2 is common ground wire and OPGW connection in series-parallel schematic diagram in the present invention.
Fig. 3 is that earth cable overlaps schematic diagram.
In figure: 1. grounding switch, 2. support insulator, 3. cable disk, 4. ice-melt action bars, 5. ice melting electric cable, 6.
Interflow wire clamp.
Detailed description of the invention
The design concept of the present invention is: the problem existed for prior art, it is proposed that a kind of " connection in series-parallel mixing " new
Type de-icing technology, on the premise of can not reducing ensureing transmission line of electricity safety, reliability, makes full use of single double-circuit line ice-melt
Currents match, is substantially reduced ground wire deicing improvement expenses, and adds the use valency of the novel de-icing technology of " connection in series-parallel mixing "
Value.
Below concrete technical scheme is illustrated.
The present invention comprises the steps:
Step one: determine ice-melt section, need the melting of ground wire (including common ground wire and insulating optical fiber composite ground wire OPGW) of ice-melt
Ice length, determine ice-melt direct current power source voltage, select that there is suitable insulation intensity according to its load, material requirements and mounting means
Ground insulator string and portable protective gaps distance d (the i.e. discharge voltage of portable protective gaps distance d and the ground insulator string of coupling
Icing flashover voltage is basically identical).
Need according to ground wire icing degree and ice-melt length determining ice-melt direct current power source voltage when.Determine between protection
Need according to ice-melt direct current power source voltage away from d.In general, ice-melt direct current power source voltage is the biggest, and portable protective gaps distance is the biggest, no
Then portable protective gaps distance is the least.
Step 2: if having an ice-melt section, then by two of this ice-melt section neighbouring common ground wires, or one general
Logical ground wire and one thoroughly does away with that edge optical power grounded waveguide is end to end to be connected in parallel, and two parallel connected end are connected respectively to ice-melt unidirectional current
The two poles of the earth, source；If having at least two ice-melt section, then by two of each ice-melt section neighbouring common ground wires, or one common
Ground wire and one thoroughly does away with that edge optical power grounded waveguide OPGW is end to end is connected in parallel, and forms parallel circuit, then by each electricity in parallel
Road is together in series, and the two ends of series circuit are connected respectively to ice-melt DC source the two poles of the earth.(as Fig. 1,2)
This step is the main innovation point of the present invention, on the premise of can not reducing ensureing transmission line of electricity safety, reliability, logical
Overmatching double loop single ground wire current-carrying capacity ground wire ice melting current in parallel with single loop two, is substantially reduced ground wire deicing transformation expense
With, and add the use value of the novel de-icing technology of " connection in series-parallel mixing ".
Step 3: support common ground wire or the compound ground of insulating optical fiber by ground insulator string at the cross-arm of anchor support
Line, is drawn ground wire from strain insulator-string end, is supported by ground wire support insulator, be connected to the insulation being connected with grounding switch 1
On pillar.When transmission line of electricity is properly functioning, common ground wire or insulating optical fiber composite ground wire are reliable by the grounding switch 1 of Guan Bi
Ground connection.The when of ice-melt, grounding switch 1 is opened, common ground wire or Optical Fiber Composite common ground wire insulation against ground.Install additional ground wire grounded
Disconnecting link 1, it is intended that ground wire grounded operation when circuit is properly functioning, reduces ground wire induced voltage.Can ensure transmission line of electricity safety,
On the premise of reliability does not reduces, it is substantially reduced ground wire deicing improvement expenses, and adds the novel ice-melt of " connection in series-parallel mixing "
The use value of technology.
The ground insulator string of band gap is installed additional, it is intended that meet ice-melt direct current power source voltage exhausted described in it should be noted that
Edge requirement, and occur to puncture gap discharge earial drainage during thunderbolt.
Step 4: tower body short transverse is provided with support insulator 2 in anchor support side, the ice-melt electricity of an ice-melt
Cable 5 is fixed by support insulator 2.When transmission line of electricity is properly functioning, cable 5 one end utilizes on anchor support construction Kong Gu nearby
It is scheduled on steel tower, on the other end then dish cable disk 3 at steel tower cross-arm.As shown in Figure 3.
Tower body installs support insulator 2 additional, it is intended that fixing support ice melting electric cable 5.Install additional band gap ground insulator string and
The support insulator 2 installed additional, needs to meet ground wire and tower body all insulation, and meets the insulating requirements of deicing device voltage.Single
Connected by the single ground wire in double loop again after ground, two, loop line parallel, it is achieved unilateral ground wire segmentation ice-melt.
When needing ice-melt, ice melting electric cable 5 one end is connected to (now earthing on the insulation column that is connected with grounding switch 1
Lock 1 is in open mode), the other end is then connected to ice-melt action bars 4 end, and interflow wire clamp 6 is inserted in ice-melt action bars 4 end
In, ice melting electric cable 5 obtains electric, produces ice melting current in connection in series-parallel ice-melt loop so that common ground wire or Optical Fiber Composite are commonly
Line ice-melt.
Ice-melt action bars 4 is set and is intended to suitable ground line length and concrete tower position, ice-melt DC power supply circuit and ground wire
Loop overlap joint gets up, and makes ground wire graded insulation single-point grounding when transmission line of electricity is properly functioning, and ground wire needs to make ground wire full during ice-melt
Insulation.
Claims (3)
1. a transmission line of electricity connection in series-parallel mixing ground wire de-icing method, it is characterised in that comprise the steps:
S1: determine ice-melt section, ice-melt length, ice-melt direct current power source voltage, selects the ground insulator with suitable mechanical strength
Go here and there and determine its guard band；
S2: if having an ice-melt section, then by two of this ice-melt section neighbouring common ground wires, or common ground wire and
One thoroughly does away with that edge optical power grounded waveguide is end to end is connected in parallel, and two parallel connected end are connected respectively to ice-melt DC source the two poles of the earth；
If having at least two ice-melt section, then by two of each ice-melt section neighbouring common ground wires, or common ground wire and
One thoroughly does away with that edge optical power grounded waveguide is end to end is connected in parallel, and forms parallel circuit, then is got up by each parallel circuit in series,
The two ends of series circuit are connected respectively to ice-melt DC source the two poles of the earth；
S3: fix common ground wire or insulating optical fiber composite ground wire by ground insulator string at the cross-arm of anchor support, and make
Under every common ground wire or insulated compound optical fiber are drawn by property-line insulator chain respectively, and it is connected to grounding switch；At power transmission line
When road is properly functioning, common ground wire or the insulated compound optical ground wire grounding switch ground connection by Guan Bi, the ground connection when of ice-melt
Disconnecting link is opened；
S4: arrange support insulator along tower body short transverse in anchor support side, the ice melting electric cable of an ice-melt is exhausted by pillar
Edge is fixed；When transmission line of electricity is properly functioning, ice melting electric cable one end is fixed on steel tower, and the other end is positioned at column foot, needs to melt
During ice, ice melting electric cable one end is connected on the ground insulator string that is connected with grounding switch, and the other end is then connected to, and is connected to
Interflow wire clamp in ground, ice melting electric cable obtains electric, produces ice melting current so that common ground wire or insulated compound optical fiber ice-melt.
2. a kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method as claimed in claim 1, it is characterised in that basis in S1
Ice-melt direct current power source voltage, select the ground insulator with suitable mechanical strength according to load, material requirements and mounting means
String.
3. a kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method as claimed in claim 1, it is characterised in that basis in S1
Ice-melt direct current power source voltage determines the guard band of ground wire insulator chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704382.5A CN106159798A (en) | 2016-08-23 | 2016-08-23 | A kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704382.5A CN106159798A (en) | 2016-08-23 | 2016-08-23 | A kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106159798A true CN106159798A (en) | 2016-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610704382.5A Pending CN106159798A (en) | 2016-08-23 | 2016-08-23 | A kind of transmission line of electricity connection in series-parallel mixing ground wire de-icing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088384A (en) * | 2018-09-30 | 2018-12-25 | 南京电力金具设计研究院有限公司 | A kind of overhead transmission line conductors on quad bundled ice-melt short jumper device |
| CN113541035A (en) * | 2021-05-27 | 2021-10-22 | 国网浙江省电力有限公司台州供电公司 | Accurate ice melting system for ground wire and optical cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011517267A (en) * | 2008-04-02 | 2011-05-26 | ザ トラスティーズ オブ ダートマウス カレッジ | System and method for deicing power line cables |
| CN102780193A (en) * | 2012-07-06 | 2012-11-14 | 广东电网公司电力科学研究院 | Current ice-melting method for overhead ground wires of electric transmission line |
-
2016
- 2016-08-23 CN CN201610704382.5A patent/CN106159798A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011517267A (en) * | 2008-04-02 | 2011-05-26 | ザ トラスティーズ オブ ダートマウス カレッジ | System and method for deicing power line cables |
| CN102780193A (en) * | 2012-07-06 | 2012-11-14 | 广东电网公司电力科学研究院 | Current ice-melting method for overhead ground wires of electric transmission line |
Non-Patent Citations (2)
| Title |
|---|
| 张益修等: "长距离地线融冰及工程实践", 《勘测设计》 * |
| 胡全等: "溪洛渡送电广东±500kV同塔双回直流线路地线融冰接线方式研究", 《电气应用》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088384A (en) * | 2018-09-30 | 2018-12-25 | 南京电力金具设计研究院有限公司 | A kind of overhead transmission line conductors on quad bundled ice-melt short jumper device |
| CN109088384B (en) * | 2018-09-30 | 2023-11-10 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Overhead transmission line four-split conductor deicing shorting device |
| CN113541035A (en) * | 2021-05-27 | 2021-10-22 | 国网浙江省电力有限公司台州供电公司 | Accurate ice melting system for ground wire and optical cable |
| CN113541035B (en) * | 2021-05-27 | 2023-08-15 | 国网浙江省电力有限公司台州供电公司 | Accurate ice melting system for ground wires and optical cables |
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Application publication date: 20161123 |
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