CN104701797A - 10kV distribution network line alternating current ice melting method - Google Patents
10kV distribution network line alternating current ice melting method Download PDFInfo
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- CN104701797A CN104701797A CN201510160002.1A CN201510160002A CN104701797A CN 104701797 A CN104701797 A CN 104701797A CN 201510160002 A CN201510160002 A CN 201510160002A CN 104701797 A CN104701797 A CN 104701797A
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- ice
- line
- melting
- ice melting
- deicing device
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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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- Production, Working, Storing, Or Distribution Of Ice (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a 10kV distribution network line alternating current ice melting method. The 10kV distribution network line alternating current ice melting method includes the following steps of step 1, collecting data required by ice melting; step 2, analyzing the line ice melting length; step 3, confirming a scheme for the ice melting; step 4, disconnecting a line branch line of the ice melting; step 5, operating short contacts of the ice melting; step 6, adjusting an ice melting device; step 7, starting the ice melting device to melt ice; step 8, switching off the ice melting device after finishing the ice melting; step 9, recovering disconnected branch line three phases in the step 4 and the A, B and C three phases of the corresponding short contact lines in the step 5. The 10kV distribution network line alternating current ice melting method has the advantages that the practicability is strong, the operation is convenient, the ice melting can be conducted on the 10kV distribution network line three phases simultaneously, and the whole line ice melting of a long-distance 10kV distribution network line can be achieved; the ice melting time is short, branch lines needing to be disconnected are less, the ice melting workload is small, the labor intensity of network distribution manual ice deicing can be greatly reduced, and the safety in the ice melting process is improved.
Description
Technical field
The invention belongs to electrical engineering technical field, particularly relate to a kind of 10kV distribution line and exchange de-icing method.
Background technology
South China area Transmission Line in Winter icing is serious, and electrical network suffers freezing disaster for a long time, and often rod disconnection occurs, 10kV distribution line faces user directly, and rod disconnection is the most direct on people's electricity consumption impact for it.At the beginning of 2008, Hunan Electric Grid is subject to century-old difficult ice damage of meeting, and affects by it, and accumulative disconnected bar 63036 base of 10kV circuit, break 47898 place 15304 kms, damages distribution transforming 3380, cause direct economic loss more than tens to Hunan Electric Grid.On February 26th, 2009, the area, little Sha river being located in high and cold mountain area met with continuously consecutive low temperature rainwater weather, and this area's distribution line icing is serious, and maximum ice covering thickness reaches 30mm to March 4, and cause 10kV circuit to fall bar 219 base altogether, break 423 places.10kV distribution line fall rod disconnection on a large scale, make that the service restoration cycle is long, difficulty large, it is huge to the strike of the last five kilometers of passages of electricity consumption, has a strong impact on the electricity consumption of resident's productive life, impacts the celebrating atmosphere that the people reunites the Spring Festival.And along with the fast development of economy and social progress, the people require to improve constantly to power supply reliability, the responsibility consciousness of enterprises service society is progressively strengthened, and ensures that the fail safe of distribution line when in the face of ice damage is very important.At present, for the transmission line de-icing method of 110kV and above and ice-melt measure fairly perfect, but 10kV distribution line branch road is various, line length difference is large, and ice-melt is very difficult, mainly still rely on artificial deicing, large, the consuming time length of artificial de-icing work amount, deicing personal security without guarantee, inefficiency, cannot carry out on a large scale, cause 10kV distribution line to become the weakest ring of electrical network opposing ice damage.For this reason, the efficient ice-melt work fast for 10kV distribution line must be carried out, for operation maintenance system of units surely ice-melt measure safely and efficiently effective guidance is provided, ensure power network safety operation, improve power supply reliability, strengthen from least significant end.
Summary of the invention
The object of the present invention is to provide a kind of ice-melt efficiency that can significantly improve 10kV distribution line, simplify ice-melt operation, ensure operator safety, a large amount of saving ice-melt time, prevent circuit from falling rod disconnection not in time because of ice-melt, thus the 10kV distribution line significantly improving Reliability of Power Supplying Net Work exchange de-icing method.
This 10kV distribution line provided by the invention exchanges de-icing method, comprises the steps:
(1), collect the particulars of circuit and deicing device from circuit affiliated unit, comprise line voltage distribution grade, length, line style, circuitry number, primary connection figure, topographic features along the line, icing section, in real time ice covering thickness, wind speed, temperature, circuit actual measurement resistance value, the output voltage gear of deicing device, the output-current rating of deicing device;
(2), according to the output voltage gear of deicing device, calculate the line ice-melting length that each gear is corresponding, the icing section confirmed in combining step 1, must comprise the principle of this icing section, determine the output voltage of deicing device, ice melting current and line ice-melting length according to line ice-melting length;
(3) output voltage of the deicing device, according to step 2 determined and line ice-melting length, and the line style of collecting in step 1, circuit actual measurement resistance value, estimation circuit voltage's distribiuting situation along the line;
(4), when until position ice-melt residing for DC ice-melting branch line line voltage distribution is greater than 4kV, disconnects corresponding branch line three-phase; When until position ice-melt residing for DC ice-melting branch line, line voltage distribution is no more than 4kV, then this branch line does not disconnect;
(5) the line ice-melting length, according to step 2 determined, at A, B, C three-phase of the position short circuit circuit of this length distance of distance deicing device;
(6) output voltage of the deicing device, according to step 2 determined, the output voltage gear of adjustment deicing device is to this output voltage;
(7), close the ice-melt disconnecting link treating that DC ice-melting is corresponding, and make deicing device and treat that DC ice-melting is communicated with, the deicing device that setting up procedure 6 configures carries out three-phase ice-melt;
(8), observe the icing treated in DC ice-melting, when its icing comes off completely, close above-mentioned deicing device;
(9), A, B, C three-phase of the branch line three-phase that breaks of recovering step 4 and the corresponding short circuit circuit of step 5.
In described step 4, when until position ice-melt residing for DC ice-melting branch line, line voltage distribution is greater than 4kV, and branch line is by some connection multiple stage distribution transformers, disconnects branch line high-pressure side three-phase.
In described step 4, when until position ice-melt residing for DC ice-melting branch line, line voltage distribution is greater than 4kV, and branch line directly connects separate unit distribution transformer, disconnects the low-pressure side three-phase of distribution transformer.
The present invention is practical, easy to operate, and ice-melt while of can carrying out 10kV distribution line three-phase, can realize all fronts ice-melt of the 10kV distribution line of long distance; The ice-melt time is short, and need the branch line of disconnection few, ice-melt workload is little, greatly can reduce the labour intensity of the artificial deicing of distribution, improves the fail safe of deicing processes; To the freezing preventing and ice melting work of 10kV distribution line, there is good directive significance, to the safe and stable operation of distribution and prevent ice damage from having important effect.
Embodiment
Embodiment 1
This 10kV distribution line of the present invention exchanges de-icing method, comprises the steps:
(1), collect the particulars of circuit and deicing device from circuit affiliated unit, comprise line voltage distribution grade, length, line style, circuitry number, primary connection figure, topographic features along the line, icing section, in real time ice covering thickness, wind speed, temperature, circuit actual measurement resistance value, the output voltage gear of deicing device, the output-current rating of deicing device;
(2), according to the output voltage gear of deicing device, calculate the line ice-melting length that each gear is corresponding, the icing section confirmed in combining step 1, must comprise the principle of this icing section, determine the output voltage of deicing device, ice melting current and line ice-melting length according to line ice-melting length;
(3) output voltage of the deicing device, according to step 2 determined and line ice-melting length, and the line style of collecting in step 1, circuit actual measurement resistance value, estimation circuit voltage's distribiuting situation along the line;
(4), judge that line voltage distribution is greater than 4kV when position ice-melt residing for DC ice-melting branch line, and branch line is by some connection multiple stage distribution transformers, disconnects branch line high-pressure side three-phase;
(5) the line ice-melting length, according to step 2 determined, at A, B, C three-phase of the position short circuit circuit of this length distance of distance deicing device;
(6) output voltage of the deicing device, according to step 2 determined, the output voltage gear of adjustment deicing device is to this output voltage;
(7), close the ice-melt disconnecting link treating that DC ice-melting is corresponding, and make deicing device and treat that DC ice-melting is communicated with, the deicing device that setting up procedure 6 configures carries out three-phase ice-melt;
(8), observe the icing treated in DC ice-melting, when its icing comes off completely, close above-mentioned deicing device;
(9), A, B, C three-phase of the branch line high-pressure side three-phase that breaks of recovering step 4 and the corresponding short circuit circuit of step 5.
Embodiment 2:
This 10kV distribution line of the present invention exchanges de-icing method, comprises the steps:
(1), collect the particulars of circuit and deicing device from circuit affiliated unit, comprise line voltage distribution grade, length, line style, circuitry number, primary connection figure, topographic features along the line, icing section, in real time ice covering thickness, wind speed, temperature, circuit actual measurement resistance value, the output voltage gear of deicing device, the output-current rating of deicing device;
(2), according to the output voltage gear of deicing device, calculate the line ice-melting length that each gear is corresponding, the icing section confirmed in combining step 1, must comprise the principle of this icing section, determine the output voltage of deicing device, ice melting current and line ice-melting length according to line ice-melting length;
(3) output voltage of the deicing device, according to step 2 determined and line ice-melting length, and the line style of collecting in step 1, circuit actual measurement resistance value, estimation circuit voltage's distribiuting situation along the line;
(4), judge that line voltage distribution is greater than 4kV when position ice-melt residing for DC ice-melting branch line, and branch line directly connects separate unit distribution transformer, disconnects the low-pressure side three-phase of distribution transformer;
(5) the line ice-melting length, according to step 2 determined, at A, B, C three-phase of the position short circuit circuit of this length distance of distance deicing device;
(6) output voltage of the deicing device, according to step 2 determined, the output voltage gear of adjustment deicing device is to this output voltage;
(7), close the ice-melt disconnecting link treating that DC ice-melting is corresponding, and make deicing device and treat that DC ice-melting is communicated with, the deicing device that setting up procedure 6 configures carries out three-phase ice-melt;
(8), observe the icing treated in DC ice-melting, when its icing comes off completely, close above-mentioned deicing device;
(9), A, B, C three-phase of the distribution transformer low-pressure side three-phase that breaks of recovering step 4 and the corresponding short circuit circuit of step 5.
Embodiment 3:
This 10kV distribution line of the present invention exchanges de-icing method, comprises the steps:
(1), collect the particulars of circuit and deicing device from circuit affiliated unit, comprise line voltage distribution grade, length, line style, circuitry number, primary connection figure, topographic features along the line, icing section, in real time ice covering thickness, wind speed, temperature, circuit actual measurement resistance value, the output voltage gear of deicing device, the output-current rating of deicing device;
(2), according to the output voltage gear of deicing device, calculate the line ice-melting length that each gear is corresponding, the icing section confirmed in combining step 1, must comprise the principle of this icing section, determine the output voltage of deicing device, ice melting current and line ice-melting length according to line ice-melting length;
(3) output voltage of the deicing device, according to step 2 determined and line ice-melting length, and the line style of collecting in step 1, circuit actual measurement resistance value, estimation circuit voltage's distribiuting situation along the line;
(4), judge that line voltage distribution is no more than 4kV when position ice-melt residing for DC ice-melting branch line, this branch line does not disconnect;
(5) the line ice-melting length, according to step 2 determined, at A, B, C three-phase of the position short circuit circuit of this length distance of distance deicing device;
(6) output voltage of the deicing device, according to step 2 determined, the output voltage gear of adjustment deicing device is to this output voltage;
(7), close the ice-melt disconnecting link treating that DC ice-melting is corresponding, and make deicing device and treat that DC ice-melting is communicated with, the deicing device that setting up procedure 6 configures carries out three-phase ice-melt;
(8), observe the icing treated in DC ice-melting, when its icing comes off completely, close above-mentioned deicing device;
(9), A, B, C three-phase of the corresponding short circuit circuit of recovering step 5.
Claims (3)
1. 10kV distribution line exchanges a de-icing method, comprises the steps:
(1), collect the particulars of circuit and deicing device from circuit affiliated unit, comprise line voltage distribution grade, length, line style, circuitry number, primary connection figure, topographic features along the line, icing section, in real time ice covering thickness, wind speed, temperature, circuit actual measurement resistance value, the output voltage gear of deicing device, the output-current rating of deicing device;
(2), according to the output voltage gear of deicing device, calculate the line ice-melting length that each gear is corresponding, the icing section confirmed in combining step 1, must comprise the principle of this icing section, determine the output voltage of deicing device, ice melting current and line ice-melting length according to line ice-melting length;
(3) output voltage of the deicing device, according to step 2 determined and line ice-melting length, and the line style of collecting in step 1, circuit actual measurement resistance value, estimation circuit voltage's distribiuting situation along the line;
(4), when until position ice-melt residing for DC ice-melting branch line line voltage distribution is greater than 4kV, disconnects corresponding branch line three-phase; When until position ice-melt residing for DC ice-melting branch line, line voltage distribution is no more than 4kV, then this branch line does not disconnect;
(5) the line ice-melting length, according to step 2 determined, at A, B, C three-phase of the position short circuit circuit of this length distance of distance deicing device;
(6) output voltage of the deicing device, according to step 2 determined, the output voltage gear of adjustment deicing device is to this output voltage;
(7), close the ice-melt disconnecting link treating that DC ice-melting is corresponding, and make deicing device and treat that DC ice-melting is communicated with, the deicing device that setting up procedure 6 configures carries out three-phase ice-melt;
(8), observe the icing treated in DC ice-melting, when its icing comes off completely, close above-mentioned deicing device;
(9), A, B, C three-phase of the branch line three-phase that breaks of recovering step 4 and the corresponding short circuit circuit of step 5.
2. 10kV distribution line according to claim 1 exchanges de-icing method, it is characterized in that: in described step 4, when until position ice-melt residing for DC ice-melting branch line, line voltage distribution is greater than 4kV, and branch line is by some connection multiple stage distribution transformers, disconnects branch line high-pressure side three-phase.
3. 10kV distribution line according to claim 1 exchanges de-icing method, it is characterized in that: in described step 4, when until position ice-melt residing for DC ice-melting branch line, line voltage distribution is greater than 4kV, and branch line directly connects separate unit distribution transformer, disconnects the low-pressure side three-phase of distribution transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510160002.1A CN104701797B (en) | 2015-04-07 | 2015-04-07 | 10kV distribution line exchanges de-icing method |
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| CN201510160002.1A CN104701797B (en) | 2015-04-07 | 2015-04-07 | 10kV distribution line exchanges de-icing method |
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| CN104701797B CN104701797B (en) | 2016-03-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147068A (en) * | 2017-07-20 | 2017-09-08 | 国网四川省电力公司电力科学研究院 | The distribution line AC ice melting device and method of a kind of tunable capacitor series compensation |
| CN107359544A (en) * | 2017-08-30 | 2017-11-17 | 国网湖南省电力公司 | Exchange de-icing method for agriculture distribution line |
| CN107482530A (en) * | 2017-09-20 | 2017-12-15 | 湖南省湘电试研技术有限公司 | Based on the Portable rural distribution exchange de-icing method and device for handing over orthogonal Two Stages |
| CN107658778A (en) * | 2017-10-08 | 2018-02-02 | 国网江西省电力公司电力科学研究院 | A kind of quick de-icing method of distribution network line |
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| US6433520B1 (en) * | 2001-05-29 | 2002-08-13 | Siemens Power Transmission & Distribution Inc | Dc power regulator incorporating high power ac to dc converter with controllable dc voltage and method of use |
| CN102593779A (en) * | 2012-04-09 | 2012-07-18 | 瓮福（集团）有限责任公司 | Alternating-current de-icing device for three-winding transformers and operation method thereof |
| CN102832582A (en) * | 2012-09-12 | 2012-12-19 | 西南交通大学 | Online anti-icing and de-icing control system of alternating current electrified railway catenary |
| CN103199477A (en) * | 2013-04-17 | 2013-07-10 | 国家电网公司 | Circuit alternating current (AC) ice melting method and circuit AC ice melting device |
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2015
- 2015-04-07 CN CN201510160002.1A patent/CN104701797B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6433520B1 (en) * | 2001-05-29 | 2002-08-13 | Siemens Power Transmission & Distribution Inc | Dc power regulator incorporating high power ac to dc converter with controllable dc voltage and method of use |
| CN102593779A (en) * | 2012-04-09 | 2012-07-18 | 瓮福（集团）有限责任公司 | Alternating-current de-icing device for three-winding transformers and operation method thereof |
| CN102832582A (en) * | 2012-09-12 | 2012-12-19 | 西南交通大学 | Online anti-icing and de-icing control system of alternating current electrified railway catenary |
| CN103199477A (en) * | 2013-04-17 | 2013-07-10 | 国家电网公司 | Circuit alternating current (AC) ice melting method and circuit AC ice melting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147068A (en) * | 2017-07-20 | 2017-09-08 | 国网四川省电力公司电力科学研究院 | The distribution line AC ice melting device and method of a kind of tunable capacitor series compensation |
| CN107359544A (en) * | 2017-08-30 | 2017-11-17 | 国网湖南省电力公司 | Exchange de-icing method for agriculture distribution line |
| CN107482530A (en) * | 2017-09-20 | 2017-12-15 | 湖南省湘电试研技术有限公司 | Based on the Portable rural distribution exchange de-icing method and device for handing over orthogonal Two Stages |
| CN107658778A (en) * | 2017-10-08 | 2018-02-02 | 国网江西省电力公司电力科学研究院 | A kind of quick de-icing method of distribution network line |
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| CN104701797B (en) | 2016-03-16 |
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