CN102798367A - Method and device for detecting ice thickness on transmission line conductor - Google Patents
Method and device for detecting ice thickness on transmission line conductor Download PDFInfo
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- CN102798367A CN102798367A CN2011101420618A CN201110142061A CN102798367A CN 102798367 A CN102798367 A CN 102798367A CN 2011101420618 A CN2011101420618 A CN 2011101420618A CN 201110142061 A CN201110142061 A CN 201110142061A CN 102798367 A CN102798367 A CN 102798367A
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Abstract
The invention discloses a method and a device for detecting ice thickness on a transmission line conductor. By calculating the actual ice thickness on the transmission line conductor and the tension change condition of the line conductor, a user can take measures of ice removal, ice melting and the like in advance according to the calculation result. According to the technical scheme, the method comprises the following steps of: calculating an initial line conductor inclination angle of the line conductor in an initial state; correcting the actually measured line conductor inclination angle by using the initial line conductor inclination angle; calculating the total specific load of the line conductor according to the corrected actually measured line conductor inclination angle; calculating the total mass of ice on the line conductor according to the total specific load of the line conductor in the step 3; and calculating the ice thickness of the line conductor by combining the total mass of the ice on the line conductor and self weight of the line conductor.
Description
Technical field
The present invention relates to a kind of electrical network detection technique, relate in particular on the ultra-high-tension power transmission line method and apparatus that calculates wire icing thickness through the mode of measuring lead inclination angle variable quantity.
Background technology
In China economy increase fast, today of energy growing tension, the security of electrical network more and more comes into one's own, this wherein the security of ultra-high-tension power transmission line also be the important step that can not be ignored.
China transmission line of electricity safe operation, particularly mountain in the wire icing serious threat, knob, line walking difficulty.Under long sleet frost climate, need a kind of measure to come the actual icing situation of each circuit of reflection in real time, be beneficial to arrange in advance various safeguard procedures.
Year early Febuary in mid-January, 2008 to 2008; Sleet freezing weather several years China's southern area that comes on a large scale for a long time rarely seen in the history; The powerline ice-covering snowberg is serious; Major disasters such as tower, broken string successively take place, and cause great influence to electric power safety production and the orderly supply of electric power.
In the process to the research of wire icing of transmission line input, some research institutions have developed the on-Line Monitor Device that is used for wire icing monitoring successively, but really can be used for the model of practical application and few.
Summary of the invention
The objective of the invention is to address the above problem; A kind of wire icing of transmission line thickness detecting method is provided; Calculate actual ice covering thickness and wire tension situation of change on the lead of transmission line of electricity, the user can take measures such as deicing, ice-melt in advance according to result of calculation.
Another object of the present invention is to provide a kind of wire icing of transmission line thickness detection apparatus.
Technical scheme of the present invention is: the present invention has disclosed a kind of wire icing of transmission line thickness detecting method, comprising:
Step 1: calculate the initial lead inclination angle of lead under original state;
Step 2: the initial lead inclination angle with step 1 is revised actual measurement lead inclination angle;
Step 3: according to calculating lead through the revised actual measurement lead of step 2 inclination angle always than carrying;
Step 4: the lead according to step 3 always calculates the wire icing gross mass than carrying;
Step 5: the wire icing gross mass of integrating step 4, lead deadweight, calculate wire icing thickness.
According to an embodiment of wire icing of transmission line thickness detecting method of the present invention, said lead inclination angle is meant in the arbitrary shelves of transmission line of electricity, the angle of lead hitch point place lead tangential direction and horizontal direction.
According to an embodiment of wire icing of transmission line thickness detecting method of the present invention, the contained factor of said original state comprises weather, geographical environment.
According to an embodiment of wire icing of transmission line thickness detecting method of the present invention, said lead is always than carrying the load be on the guide line to be born.
The present invention has also disclosed a kind of wire icing of transmission line thickness detection apparatus; Comprise that initial lead inclination angle computing module, actual measurement lead inclination correction module, lead are always than carrying computing module, wire icing gross mass computing module, wire icing THICKNESS CALCULATION module, wherein:
Said initial lead inclination angle computing module calculates the initial lead inclination angle of lead under original state;
Said actual measurement lead inclination correction module connects said initial lead inclination angle computing module, with initial lead inclination angle actual measurement lead inclination angle is revised;
Said lead always than carrying computing module, connects said actual measurement lead inclination correction module, calculates lead always than carrying according to revised actual measurement lead inclination angle;
Said wire icing gross mass computing module connects said lead always than carrying computing module, always calculates the wire icing gross mass than carrying according to lead;
Said wire icing THICKNESS CALCULATION module connects said wire icing gross mass computing module, in conjunction with wire icing gross mass, lead deadweight, calculates wire icing thickness.
According to an embodiment of wire icing of transmission line thickness detection apparatus of the present invention, said lead inclination angle is meant in the arbitrary shelves of transmission line of electricity, the angle of lead hitch point place lead tangential direction and horizontal direction.
According to an embodiment of wire icing of transmission line thickness detection apparatus of the present invention, the contained factor of said original state comprises weather, geographical environment.
According to an embodiment of wire icing of transmission line thickness detection apparatus of the present invention, said lead is always than carrying the load be on the guide line to be born.
The present invention contrasts prior art has following beneficial effect: scheme of the present invention is that the certain dangerous point on transmission line of electricity is installed lead inclination angle monitoring device; Monitor the variable quantity at lead inclination angle in real time; Actual ice covering thickness and the wire tension situation of change of this Model Calculation lead then, the user can take measures such as deicing, ice-melt in advance according to result of calculation.
Description of drawings
The process flow diagram of the embodiment that shows wire icing of transmission line thickness detecting method of the present invention that Fig. 1 is exemplary.
The structural drawing of the embodiment that shows wire icing of transmission line thickness detection apparatus of the present invention that Fig. 2 is exemplary.
Fig. 3 shows the application scenarios synoptic diagram of wire icing of transmission line thickness detection apparatus of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
The embodiment of wire icing of transmission line thickness detecting method
Fig. 1 shows the detailed step of the embodiment of wire icing of transmission line thickness detecting method of the present invention.See also Fig. 1, details are as follows for the wire icing of transmission line thickness detecting method of present embodiment.
Step S10: calculate the initial lead inclination angle of lead under original state.
The lead inclination angle is meant in the arbitrary shelves of transmission line of electricity, the angle of lead hitch point place lead tangential direction and horizontal direction.
Transmission line of electricity design initial equilibrium state is meant transmission line of electricity when setting up, and Electric Power Design Institute can let lead keep suitable degree of speeding according to factors such as the weather of circuit location, geographical environments during the regulation unwrapping wire.The standard parameter of instructing workers unwrapping wire has environment temperature, the stress of conductor, lead sag.Be the environment temperature that the workman can be when setting up, select suitable sag to carry out unwrapping wire.Many groups parameter (every group all comprises environment temperature, the stress of conductor, lead sag) when being used for the instructing workers unwrapping wire calls the design initial equilibrium state.This design initial equilibrium state can belong to the work area or line design unit checks in by circuit.
Appoint and to get one group of lead initial equilibrium state numerical value (mainly being environment temperature, lead horizontal stress), calculate primary dip at the beginning of the lead under this initial equilibrium state, account form is through following example shows:
Suppose that an isolated grade span is 800 meters; 240 meters of one side mounting point (called after A point) height height above sea levels, 250 meters of opposite side hitch point (called after B point) height above sea levels, wire type LGJ 630/45; One group of design initial equilibrium state is: environment temperature is 15 ℃, and the lead horizontal stress is 54N/mm
2
In transmission line of electricity, lead is that holder hangs with the shaft tower, for (referring to not bear bending stress) and the load long equally distributed rope along the line of a softness that is suspended on two point of fixity A, B, formed being shaped as " catenary ".Therefore, after ignoring the rigidity effects of conductor material, can select for use following outstanding line equation to carry out lead than the research of carrying, the catenary form is following:
Catenary equation has a lot of groups, selects following two groups here for use.
L in the formula
OA---lead hitch point A point is to the horizontal range of lead minimum point, and unit is a rice;
L---span (horizontal ranges between two hitch points), unit are rice;
θ
A---the lead inclination angle at lead hitch point A place, unit is degree;
H---the discrepancy in elevation (vertical ranges between two hitch points), unit is a rice;
Simultaneous equations-1,2, in two equations:
σ
Always=54N/mm
2(initial equilibrium state horizontal stress value)
H=250 rice-240 meter=10 meters
L=800 rice
γ
Always=(2.06*9.80665)/666.55=0.0303N/mmm
2
Wherein, 2.06 improve quality (the lead base attribute can be looked into) for this model lead unit length, and 9.80665 is acceleration of gravity, 666.55mm
2Be this model sectional area of wire (the lead base attribute can be looked into).
With above numerical value substitution equation 1,2, can try to achieve:
θ
A＝12.0627°
Step S12: the initial lead inclination angle with step S10 is revised actual measurement lead inclination angle.
Why to revise the first primary dip of lead; Mainly be that the accuracy requirement to the lead inclination angle is very high in this computation model; Require to measure inclination angle and actual error of tilt in 0.05 degree scope; But in the reality, owing to reasons such as installation, designs, error range can not reach the requirement of so doing.But after the device installation, the variable quantity that records the inclination angle is accurately, if promptly device record lead measurement variation 0.01 the degree, so the actual inclination angle of lead also necessarily changed 0.01 the degree.
Therefore only need be in the lead measurement of dip angle value of device a period of time, get the lead measurement of dip angle value under the equal environment temperature in calculating with (1) step, and compare, revise in calculating with lead inclination angle in the first step.Is 15 when spending such as device in environment temperature, and recording the lead tilting value is 13.50 degree, and modified value is so:
Δ θ=12.0627 degree (first step calculating gained)-13.50 degree=-1.4373 degree
In practical application, the measured value at lead inclination angle added above modified value after, substitution Model Calculation again.
Step S14: according to calculating lead through the revised actual measurement lead of step S12 inclination angle always than carrying.
The suffered unit load of lead is that the outside combined action power that receives on the guide line unit length (every meter) is called unit load (N/m), and the acting force that is generally formed by lead sole mass and the suffered gravity of icing and wind constitutes jointly.The suffered gravity of the wire quality of unit length is called lead from heavy load, and (m: the quality on the lead unit length, this parameter are one of lead base attribute to computing formula mg, extensively are shown in each design manual or lead instructions; G: acceleration of gravity, get 9.8 approximately).The gravity that the icing quality receives on the lead unit length is called the lead ice load, and computing formula is similar to lead deadweight load account form.Lead is the load on the guide line per length section than carrying, and unit is N/mmm
2
Suppose the actual conductor temperature that records for-1 when spending, lead is icing, and this moment, lead measurement of dip angle value was 13.6373 degree, after revising according to (2) step, obtained revising lead inclination angle, back value 12.20 and spent.
Two catenary equation formulas in the simultaneous first step, as follows:
(formula-1)
(formula-2)
(meaning of parameters is seen step S10 in the formula, repeats no more here)
Analyze: in the formula
θ
A＝12.20°
H=250 rice-240 meter=10 meters
L=800 rice
σ
AlwaysHorizontal stress for lead behind the icing receives is amount to be asked;
γ
AlwaysFor lead behind the icing always than carrying, be amount to be asked;
l
OABe the intermediateness amount, also unknown, 2 equations can not solve 3 unknown quantitys.Therefore at least also need equation of simultaneous just can find the solution, we select for use hitch point not wait high electric wire state equation here:
(formula-3)
Before selecting for use hitch point not wait high electric wire state equation to be primarily aimed at lead to change with change after two states set up equation, the left side is the known state (selecting the design initial equilibrium state here) under a certain condition in the formula, wherein:
σ
0---the horizontal stress of known state lower wire minimum point, can adopt the design load of this circuit, N/mm
2Here get the 54N/mm in the design initial equilibrium state
2
t
0---the conductor temperature of known state lower wire, can adopt the design load of this circuit, ℃; Here get 15 ℃ in the design initial equilibrium state
γ
0---for state lower wire than carrying, the initial equilibrium state lower wire is icing not, is lead to carry from anharmonic ratio, account form is with step 1: (2.06*9.80665)/666.55=0.0303N/mmm
2
The temperature stretch coefficient of α---lead, 1/ ℃; This parameter value that can check in this model lead is 2.09*10
-51/ ℃
The elasticity coefficient of E---lead, N/mm
2This parameter value that can check in this model lead is 63000N/mm
2
Another state when the right changes for condition in the formula, wherein:
Height difference angle in β---this span, ° (degree); Its value can be tried to achieve according to trigonometric function, for:
T---be the conductor temperature value under the virtual condition, be-1 ℃
The above equation of simultaneous (1), (2), (3) can find the solution and obtain γ
Always, as follows:
γ
Always=0.04843N/mmm
2
Step S16: the lead according to step S14 always calculates the wire icing gross mass than carrying.
Call lead to the load that is born on the lead unit length unit area than carrying, therefore behind icing, lead always can be expressed as respectively than carrying:
G in the formula---acceleration of gravity constant gets 9.8 approximately
γ
Always---behind the wire icing always than carrying, in step 3, try to achieve 0.04843N/mmm
2
S---sectional area of wire, this model sectional area of wire is 666.55mm
2
Substitution equation (4), try to achieve:
p
3=3.2940kg/m; (gross mass behind every meter icing of lead, kg/m)
Wire icing thickness is calculated in the wire icing gross mass of step S18: integrating step S16, lead deadweight.
Wire icing thickness is meant that icing becomes the thickness of hollow cylinder, yet actual icing section possibly be various irregularly shaped, can lead myopia be thought even icing in the calculating, and with any unit length on the lead as research object.
Wherein, 2.06 improve quality (the lead base attribute can be looked into) for this model lead unit length, and 9.80665 is acceleration of gravity, and 666.55 is this model sectional area of wire (the lead base attribute can be looked into).
With above numerical value substitution equation 1,2, can try to achieve:
If ice gross mass p behind the wire icing on the unit length with lead
3, available following formula calculates ice covering thickness δ:
P in the formula
3---the gross mass behind every meter icing of lead, kg/m; In step 4, be calculated as 3.294kg/m
p
1---every meter deadweight of lead when not having ice, kg/m; Can check in every meter deadweight of this model lead is 2.06kg/m
ρ
i---icing density, be converted to mark ice concentration 900kg/m during calculating
3
D---wire diameter when not having ice, mm; Can check in this model wire diameter is 33.60mm
δ---wire icing thickness, mm;
With numerical value substitution equation (5), can calculate wire icing thickness:
δ＝9.995mm
Annotate: in following formula, p
3-p
1What reflect is exactly the icing quality on the lead unit length.
The embodiment of wire icing of transmission line thickness detection apparatus
Fig. 2 shows the structure of the embodiment of wire icing of transmission line thickness detection apparatus of the present invention.See also Fig. 2, the device of present embodiment comprises following module: initial lead inclination angle computing module 10, actual measurement lead inclination correction module 12, lead are always than carrying computing module 14, wire icing gross mass computing module 16, wire icing THICKNESS CALCULATION module 18.
Annexation between these modules is: initial lead inclination angle computing module 10, actual measurement lead inclination correction module 12, lead are the relations that connect in regular turn than a year computing module 14, wire icing gross mass computing module 16, wire icing THICKNESS CALCULATION module 18 always.
Initial lead inclination angle computing module 10 calculates the initial lead inclination angle of lead under original state.
The lead inclination angle is meant in the arbitrary shelves of transmission line of electricity, the angle of lead hitch point place lead tangential direction and horizontal direction.
Transmission line of electricity design initial equilibrium state is meant transmission line of electricity when setting up, and Electric Power Design Institute can let lead keep suitable degree of speeding according to factors such as the weather of circuit location, geographical environments during the regulation unwrapping wire.The standard parameter of instructing workers unwrapping wire has environment temperature, the stress of conductor, lead sag.Be the environment temperature that the workman can be when setting up, select suitable sag to carry out unwrapping wire.Many groups parameter (every group all comprises environment temperature, the stress of conductor, lead sag) when being used for the instructing workers unwrapping wire calls the design initial equilibrium state.This design initial equilibrium state can belong to the work area or line design unit checks in by circuit.
Appoint and to get one group of lead initial equilibrium state numerical value (mainly being environment temperature, lead horizontal stress), calculate primary dip at the beginning of the lead under this initial equilibrium state, account form is through following example shows:
Suppose that an isolated grade span is 800 meters; 240 meters of one side mounting point (called after A point) height height above sea levels, 250 meters of opposite side hitch point (called after B point) height above sea levels, wire type LGJ 630/45; One group of design initial equilibrium state is: environment temperature is 15 ℃, and the lead horizontal stress is 54N/mm
2
In transmission line of electricity, lead is that holder hangs with the shaft tower, for (referring to not bear bending stress) and the load long equally distributed rope along the line of a softness that is suspended on two point of fixity A, B, formed being shaped as " catenary ".Therefore, after ignoring the rigidity effects of conductor material, can select for use following outstanding line equation to carry out lead than the research of carrying, the catenary form is following:
Catenary equation has a lot of groups, selects following two groups here for use.
L in the formula
OA---lead hitch point A point is to the horizontal range of lead minimum point, and unit is a rice;
L---span (horizontal ranges between two hitch points), unit are rice;
θ
A---the lead inclination angle at lead hitch point A place, unit is degree;
H---the discrepancy in elevation (vertical ranges between two hitch points), unit is a rice;
Simultaneous equations-1,2, in two equations:
σ
Always=54N/mm
2(initial equilibrium state horizontal stress value)
H=250 rice-240 meter=10 meters
L=800 rice
γ
Always=(2.06*9.80665)/666.55=0.0303N/mmm
2
Wherein, 2.06 improve quality (the lead base attribute can be looked into) for this model lead unit length, and 9.80665 is acceleration of gravity, 666.55mm
2Be this model sectional area of wire (the lead base attribute can be looked into).
With above numerical value substitution equation 1,2, can try to achieve:
θ
A＝12.0627°
The initial lead of actual measurement lead inclination correction module 12 usefulness inclination angle is revised actual measurement lead inclination angle.
Why to revise the first primary dip of lead; Mainly be that the accuracy requirement to the lead inclination angle is very high in this computation model; Require to measure inclination angle and actual error of tilt in 0.05 degree scope; But in the reality, owing to reasons such as installation, designs, error range can not reach the requirement of so doing.But after the device installation, the variable quantity that records the inclination angle is accurately, if promptly device record lead measurement variation 0.01 the degree, so the actual inclination angle of lead also necessarily changed 0.01 the degree.
Therefore only need be in the lead measurement of dip angle value of device a period of time, get the lead measurement of dip angle value under the equal environment temperature in calculating with (1) step, and compare, revise in calculating with lead inclination angle in the first step.Is 15 when spending such as device in environment temperature, and recording the lead tilting value is 13.50 degree, and modified value is so:
Δ θ=12.0627 degree (first step calculating gained)-13.50 degree=-1.4373 degree
In practical application, the measured value at lead inclination angle added above modified value after, substitution Model Calculation again.
Lead always calculates lead always than carrying than carrying computing module 14 according to revised actual measurement lead inclination angle.
The suffered unit load of lead is that the outside combined action power that receives on the guide line unit length (every meter) is called unit load (N/m), and the acting force that is generally formed by lead sole mass and the suffered gravity of icing and wind constitutes jointly.The suffered gravity of the wire quality of unit length is called lead from heavy load, and (m: the quality on the lead unit length, this parameter are one of lead base attribute to computing formula mg, extensively are shown in each design manual or lead instructions; G: acceleration of gravity, get 9.8 approximately).The gravity that the icing quality receives on the lead unit length is called the lead ice load, and computing formula is similar to lead deadweight load account form.Lead is the load on the guide line per length section than carrying, and unit is N/mmm
2
Suppose the actual conductor temperature that records for-1 when spending, lead is icing, and this moment, lead measurement of dip angle value was 13.6373 degree, after revising according to (2) step, obtained revising lead inclination angle, back value 12.20 and spent.
Two catenary equation formulas in the simultaneous first step, as follows:
(meaning of parameters is seen initial lead inclination angle computing module 10 in the formula, repeats no more here)
Analyze: in the formula
θ
A＝12.20°
H=250 rice-240 meter=10 meters
L=800 rice
σ
AlwaysHorizontal stress for lead behind the icing receives is amount to be asked;
γ
AlwaysFor lead behind the icing always than carrying, be amount to be asked;
l
OABe the intermediateness amount, also unknown, 2 equations can not solve 3 unknown quantitys.Therefore at least also need equation of simultaneous just can find the solution, we select for use hitch point not wait high electric wire state equation here:
(formula-3)
Before selecting for use hitch point not wait high electric wire state equation to be primarily aimed at lead to change with change after two states set up equation, the left side is the known state (selecting the design initial equilibrium state here) under a certain condition in the formula, wherein:
σ
0---the horizontal stress of known state lower wire minimum point, can adopt the design load of this circuit, N/mm
2Here get the 54N/mm in the design initial equilibrium state
2
t
0---the conductor temperature of known state lower wire, can adopt the design load of this circuit, ℃; Here get 15 ℃ in the design initial equilibrium state
γ
0---for state lower wire than carrying, the initial equilibrium state lower wire is icing not, is lead to carry from anharmonic ratio, account form is with step 1: (2.06*9.80665)/666.55=0.0303N/mmm
2
The temperature stretch coefficient of α---lead, 1/ ℃; This parameter value that can check in this model lead is 2.09*10
-51/ ℃
The elasticity coefficient of E---lead, N/mm
2This parameter value that can check in this model lead is 63000N/mm
2
Another state when the right changes for condition in the formula, wherein:
Height difference angle in β---this span, ° (degree); Its value can be tried to achieve according to trigonometric function, for:
T---be the conductor temperature value under the virtual condition, be-1 ℃
The above equation of simultaneous (1), (2), (3) can find the solution and obtain γ
Always, as follows:
γ
Always=0.04843N/mmm
2
Wire icing gross mass computing module 16 always calculates the wire icing gross mass than carrying according to lead.
Call lead to the load that is born on the lead unit length unit area than carrying, therefore behind icing, lead always can be expressed as respectively than carrying:
G in the formula---acceleration of gravity constant gets 9.8 approximately
γ
Always---behind the wire icing always than carrying, in step 3, try to achieve 0.04843N/mmm
2
S---sectional area of wire, this model sectional area of wire is 666.55mm
2
Substitution equation (4), try to achieve:
p
3=3.2940kg/m; (gross mass behind every meter icing of lead, kg/m)
Wire icing THICKNESS CALCULATION module 18 combines wire icing gross mass, lead deadweight, calculates wire icing thickness.
Wire icing thickness is meant that icing becomes the thickness of hollow cylinder, yet actual icing section possibly be various irregularly shaped, can lead myopia be thought even icing in the calculating, and with any unit length on the lead as research object.
Wherein, 2.06 improve quality (the lead base attribute can be looked into) for this model lead unit length, and 9.80665 is acceleration of gravity, and 666.55 is this model sectional area of wire (the lead base attribute can be looked into).
With above numerical value substitution equation 1,2, can try to achieve:
If ice gross mass p behind the wire icing on the unit length with lead
3, available following formula calculates ice covering thickness δ:
P in the formula
3---the gross mass behind every meter icing of lead, kg/m; In step 4, be calculated as 3.294kg/m
p
1---every meter deadweight of lead when not having ice, kg/m; Can check in every meter deadweight of this model lead is 2.06kg/m
ρ
i---icing density, be converted to mark ice concentration 900kg/m during calculating
3
D---wire diameter when not having ice, mm; Can check in this model wire diameter is 33.60mm
δ---wire icing thickness, mm;
With numerical value substitution equation (5), can calculate wire icing thickness:
δ＝9.995mm
Annotate: in following formula, p
3-p
1What reflect is exactly the icing quality on the lead unit length.
As shown in Figure 3; At on-the-spot miniature weather station and the lead inclination angle monitoring device installed of circuit; Carry out the collection of environment temperature and lead inclination data respectively; Be sent to subscriber data center through wired or wireless mode then,, numerical value such as wire icing thickness be provided to the user through after the calculating of this model.
The foregoing description provides to those of ordinary skills and realizes and use of the present invention; Those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; The foregoing description is made various modifications or variation; Thereby invention scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (8)
1. wire icing of transmission line thickness detecting method comprises:
Step 1: calculate the initial lead inclination angle of lead under original state;
Step 2: the initial lead inclination angle with step 1 is revised actual measurement lead inclination angle;
Step 3: according to calculating lead through the revised actual measurement lead of step 2 inclination angle always than carrying;
Step 4: the lead according to step 3 always calculates the wire icing gross mass than carrying;
Step 5: the wire icing gross mass of integrating step 4, lead deadweight, calculate wire icing thickness.
2. wire icing of transmission line thickness detecting method according to claim 1 is characterized in that, said lead inclination angle is meant in the arbitrary shelves of transmission line of electricity, the angle of lead hitch point place lead tangential direction and horizontal direction.
3. wire icing of transmission line thickness detecting method according to claim 1 is characterized in that, the contained factor of said original state comprises weather, geographical environment.
4. wire icing of transmission line thickness detecting method according to claim 1 is characterized in that, said lead is always than carrying the load be on the guide line to be born.
5. wire icing of transmission line thickness detection apparatus comprises that initial lead inclination angle computing module, actual measurement lead inclination correction module, lead are always than a year computing module, wire icing gross mass computing module, wire icing THICKNESS CALCULATION module, wherein:
Said initial lead inclination angle computing module calculates the initial lead inclination angle of lead under original state;
Said actual measurement lead inclination correction module connects said initial lead inclination angle computing module, with initial lead inclination angle actual measurement lead inclination angle is revised;
Said lead always than carrying computing module, connects said actual measurement lead inclination correction module, calculates lead always than carrying according to revised actual measurement lead inclination angle;
Said wire icing gross mass computing module connects said lead always than carrying computing module, always calculates the wire icing gross mass than carrying according to lead;
Said wire icing THICKNESS CALCULATION module connects said wire icing gross mass computing module, in conjunction with wire icing gross mass, lead deadweight, calculates wire icing thickness.
6. wire icing of transmission line thickness detection apparatus according to claim 5 is characterized in that, said lead inclination angle is meant in the arbitrary shelves of transmission line of electricity, the angle of lead hitch point place lead tangential direction and horizontal direction.
7. wire icing of transmission line thickness detection apparatus according to claim 5 is characterized in that, the contained factor of said original state comprises weather, geographical environment.
8. wire icing of transmission line thickness detection apparatus according to claim 5 is characterized in that, said lead is always than carrying the load be on the guide line to be born.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335623A (en) * | 2013-06-13 | 2013-10-02 | 国家电网公司 | Method for observing thickness of ice coating on power transmission line |
| CN103438848A (en) * | 2013-09-09 | 2013-12-11 | 成都思晗科技有限公司 | Power transmission line sag monitoring method |
| CN103791874A (en) * | 2013-08-15 | 2014-05-14 | 国家电网公司 | Lead icing thickness monitoring method |
| CN105300334A (en) * | 2015-11-13 | 2016-02-03 | 华北电力大学（保定） | Transmission line icing thickness measuring device |
| CN107514976A (en) * | 2017-08-24 | 2017-12-26 | 国家电网公司 | Power circuit icing monitoring method and terminal device |
| CN110986881A (en) * | 2019-12-17 | 2020-04-10 | 国网江苏省电力有限公司检修分公司 | Power transmission line icing on-line monitoring system based on meteorological temperature |
| CN111666690A (en) * | 2020-06-11 | 2020-09-15 | 海南电网有限责任公司 | Sag analysis method, device, equipment and medium for transmission line conductor |
| CN111998814A (en) * | 2020-08-26 | 2020-11-27 | 贵州电网有限责任公司 | Method for obtaining icing thickness of power transmission line and overhead power transmission line and calculating instrument |
| CN113340353A (en) * | 2021-06-15 | 2021-09-03 | 山东国瑞新能源有限公司 | Monitoring method, equipment and medium for power transmission line |
| CN113701690A (en) * | 2021-07-26 | 2021-11-26 | 南方电网科学研究院有限责任公司 | Equal-span transmission and distribution line tangent tower equivalent icing thickness measurement method and system |
| CN114689005A (en) * | 2022-05-06 | 2022-07-01 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Icing monitoring method under uneven icing working condition |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103335623A (en) * | 2013-06-13 | 2013-10-02 | 国家电网公司 | Method for observing thickness of ice coating on power transmission line |
| CN103791874A (en) * | 2013-08-15 | 2014-05-14 | 国家电网公司 | Lead icing thickness monitoring method |
| CN103438848A (en) * | 2013-09-09 | 2013-12-11 | 成都思晗科技有限公司 | Power transmission line sag monitoring method |
| CN105300334A (en) * | 2015-11-13 | 2016-02-03 | 华北电力大学（保定） | Transmission line icing thickness measuring device |
| CN105300334B (en) * | 2015-11-13 | 2017-11-14 | 华北电力大学（保定） | Transmission line icing thickness measurement apparatus |
| CN107514976A (en) * | 2017-08-24 | 2017-12-26 | 国家电网公司 | Power circuit icing monitoring method and terminal device |
| CN110986881A (en) * | 2019-12-17 | 2020-04-10 | 国网江苏省电力有限公司检修分公司 | Power transmission line icing on-line monitoring system based on meteorological temperature |
| CN111666690B (en) * | 2020-06-11 | 2023-10-20 | 海南电网有限责任公司 | Sag analysis method, device, equipment and medium for transmission line wires |
| CN111666690A (en) * | 2020-06-11 | 2020-09-15 | 海南电网有限责任公司 | Sag analysis method, device, equipment and medium for transmission line conductor |
| CN111998814A (en) * | 2020-08-26 | 2020-11-27 | 贵州电网有限责任公司 | Method for obtaining icing thickness of power transmission line and overhead power transmission line and calculating instrument |
| CN111998814B (en) * | 2020-08-26 | 2022-04-19 | 贵州电网有限责任公司 | Method for obtaining icing thickness of power transmission line and overhead power transmission line and calculating instrument |
| CN113340353B (en) * | 2021-06-15 | 2023-03-07 | 山东国瑞新能源有限公司 | Monitoring method, equipment and medium for power transmission line |
| CN113340353A (en) * | 2021-06-15 | 2021-09-03 | 山东国瑞新能源有限公司 | Monitoring method, equipment and medium for power transmission line |
| CN113701690A (en) * | 2021-07-26 | 2021-11-26 | 南方电网科学研究院有限责任公司 | Equal-span transmission and distribution line tangent tower equivalent icing thickness measurement method and system |
| CN113701690B (en) * | 2021-07-26 | 2024-03-22 | 南方电网科学研究院有限责任公司 | Equivalent icing thickness measuring method and system for straight line tower of equal-span power transmission and distribution line |
| CN114689005A (en) * | 2022-05-06 | 2022-07-01 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Icing monitoring method under uneven icing working condition |
| CN114689005B (en) * | 2022-05-06 | 2022-10-04 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Icing monitoring method under uneven icing working condition |
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