CN107607807A - The current time characteristic test method and device of a kind of transmission pressure ice-melt - Google Patents
The current time characteristic test method and device of a kind of transmission pressure ice-melt Download PDFInfo
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- CN107607807A CN107607807A CN201710712164.0A CN201710712164A CN107607807A CN 107607807 A CN107607807 A CN 107607807A CN 201710712164 A CN201710712164 A CN 201710712164A CN 107607807 A CN107607807 A CN 107607807A
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Abstract
The present invention provides a kind of the current time characteristic test method and device of transmission pressure ice-melt, including：S1, according to icing form parameter, icing is manufactured on transmission pressure；S2, by the current regulation in the transmission pressure to preset value, and record the ice-melt time of the icing；S3, according to the icing form parameter and the ice-melt time, obtain the computation model of the ice-melt time.The present invention on transmission pressure by according to default icing form parameter, manufacturing icing, obtaining ice-melt time and the ice melting current of the icing.The computation model of the ice-melt time and ice melting current is obtained according to ice-melt time corresponding to the icing form parameter and the icing form parameter and ice melting current.The computation model of the ice-melt time and ice melting current take into account the true form parameter of icing, more meet real ice melting current and ice-melt temporal regularity.
Description
Technical field
It is special more particularly, to a kind of current time of transmission pressure ice-melt the present invention relates to electrical engineering technical field
Property test method and device.
Background technology
In recent years, Global climate change is abnormal, and the mima type microrelief and microclimate passed through due to transmission line of electricity are complicated and changeable, icing
Disaster takes place frequently, and has a strong impact on electric power netting safe running.
Prevent that tower and more efficient and economy the method for line-outage contingency are to transmitting electricity for transmission line of electricity generation in icing disaster
Wire carries out AC or DC ice-melt.In deicing processes, if ice melting current selection it is excessive, may make transmission pressure generate heat and
It is badly damaged；And ice melting current selection it is too small, the ice-melt time can be caused oversize and can not effective ice-melt.In order to improve ice-melt effect
Rate is transmission pressure ice melting current, it is necessary in the progress transmission pressure ice-melt experiment of manual simulation climate room to obtain ice-melt rule
Selection with the time provides foundation.
Transmission pressure deicing processes are extremely complex, relevant with the factors such as ambient parameter, iced insulator and ice sheet shape.
At present, the influence of ambient parameter and iced insulator is considered emphatically when carrying out transmission pressure ice-melt experiment both at home and abroad.For ice sheet
Shape, the circle of standard is typically converted into according to the quality principle of equal effects, such as " the critical electricity of power line DC short circuit ice-melt
The icing cross sectional shape that transmission pressure is assumed in flow point analysis " is circle, and icing overlaps with the geometric center of transmission pressure, with this
Transmission pressure ice-melt characteristic rule is obtained using conventional method.Because the selection of transmission pressure ice melting current or time are mainly depended on
In the ice layer thickness that transmission pressure surface needs to melt, therefore in the transmission pressure ice-melt characteristic rule obtained according to the above method
When selecting ice melting current or determining the ice-melt time, larger difference be present with actual conditions.
For example, for the thick oval icing in the thin lower surface in upper surface shown in Fig. 1 a, after the ice sheet of dash area melts
Icing on transmission pressure will all come off, as shown in Figure 1 b.In such cases, it is converted into standard circular using by icing shape
Method the selection of ice melting current or time can be made bigger than normal.Because being converted into the ice covering thickness after circle is greater than dash area reality
The thickness of border ice sheet to be melted.For the icing of the irregular half-oval shaped shown in Fig. 1 c, when between icing and wire
After the thin layer icing of interface melts, the cohesive force pop-off between ice sheet and transmission pressure so that icing fast-falling, such as
Shown in Fig. 1 d.Therefore, when selecting ice melting current and time, it is impossible to by wire icing shape as standard circular.
In summary, the ice-melt test method for transmission pressure icing shape being considered as to standard circular in the prior art can not be anti-
The true ice-melt characteristic of transmission line of electricity is reflected, needs badly and proposes a kind of actual icing shape facility for considering transmission pressure, simulated with this
The test method of real transmission pressure ice-melt.
The content of the invention
To overcome the above-mentioned ice-melt test method that transmission pressure icing shape is considered as to standard circular to reflect power transmission line
The problem of true ice-melt characteristic on road, solves the above problems at least in part, and the invention provides a kind of transmission pressure ice-melt
Current time characteristic test method and device.
According to the first aspect of the invention, there is provided a kind of current time characteristic test method of transmission pressure ice-melt, including：
S11, according to default icing form parameter, icing is manufactured on transmission pressure；
S12, by the current regulation in the transmission pressure to preset value, and record the ice-melt time of the icing；
S13, according to the icing form parameter and the ice-melt time, obtain the computation model of the ice-melt time.
Specifically, the S11 is specifically included：
According to the icing form parameter, icing mould is obtained；
By the icing mould installion on the transmission pressure, and water is injected into the icing mould；
By water congeals into ice in the icing mould, and remove the icing mould.
Specifically, the icing form parameter includes round flat degree, eccentricity and deflection angle.
Specifically, S11 is specifically included：
Three groups of data are preset, every group of packet contains more datas, and each icing form parameter is included in every data
A value, wherein, the numerical value of round flat degree is different between pieces of data in first group of data, the value difference of eccentricity and deflection angle
It is identical；The value of eccentricity is different between pieces of data in second group of data, and the value difference of round flat degree and deflection angle is identical；3rd group
The value of deflection angle is different between pieces of data in data, and the value difference of round flat degree and eccentricity is identical；
According to the value of icing form parameter in every data, icing is manufactured on the transmission pressure.
Specifically, S13 is specifically included：
The ice-melt time corresponding to per data in every data and this group of data in every group of data, obtain institute
State the relation curve between ice-melt time and each icing form parameter；
The relation curve being fitted respectively between the ice-melt time and each icing form parameter, obtains the ice-melt
Expression formula of the time on each icing form parameter；
According to the ice-melt time on the expression formula of each icing form parameter and the ice-melt time on covering
The expression formula of ice quality, obtain the computation model of the ice-melt time.
Specifically, the round flat degree δ of the icing is obtained by following formula：
Wherein, a represents the maximum gauge of the icing, and b represents the minimum diameter of the icing；
The eccentricity σ of the icing is obtained by following formula：
Wherein, d1Represent the distance between the geometric center of the icing and the geometric center of the transmission pressure, d2Represent
The thickness of icing described in windward side；
The deflection angle theta of the icing is the maximum gauge of the icing and the angle of horizontal direction.
Specifically, the computation model of the ice-melt time is：
T=k1f(δ)+k2f(σ)+k3f(θ)+k4F (m),
k1+k2+k3+k4=1；
Wherein, T is the ice-melt time, and f (δ) is expression formula of the ice-melt time on the round flat degree δ of the icing, and f (σ) is to melt
Expression formula of the ice time on the eccentricity σ of the icing, f (θ) are expression of the ice-melt time on the deflection angle theta of the icing
Formula, f (m) are expression formula of the ice-melt time on the quality m of the icing, k1、k2、k3And k4Correspond to the round flat of the icing
Degree, eccentricity, the weights of deflection angle and quality.
According to the second aspect of the invention, there is provided a kind of current time characteristic test method of transmission pressure ice-melt, including：
S21, according to default icing form parameter, icing is manufactured on transmission pressure；
S22, the electric current in the transmission pressure is adjusted, the ice-melt time for making the icing is preset time, and records and melt
Ice electric current, the ice melting current be make the icing the ice-melt time be preset time electric current；
S23, according to the icing form parameter and the ice melting current, obtain the computation model of the ice melting current.
According to the third aspect of the invention we, there is provided a kind of current time characteristic test apparatus of transmission pressure ice-melt, including：
First manufacture module, for according to default icing form parameter, icing to be manufactured on transmission pressure；
First adjustment module, for preset value, and the current regulation in the transmission pressure to be recorded into the icing
The ice-melt time；
First acquisition module, for according to the icing form parameter and the ice-melt time, obtaining the ice-melt time
Computation model.
According to the fourth aspect of the invention, there is provided a kind of current time characteristic test apparatus of transmission pressure ice-melt, including：
Second manufacture module, for according to default icing form parameter, icing to be manufactured on transmission pressure；
Second adjustment module, for adjusting the electric current in the transmission pressure, it is default to make the ice-melt time of the icing
Time, and record ice melting current, the ice melting current be make the icing the ice-melt time be preset time electric current；
Second acquisition module, for according to the icing form parameter and the ice melting current, obtaining the ice melting current
Computation model.
The present invention on transmission pressure by according to default icing form parameter, manufacturing icing, obtaining under same current
The ice melting current of the icing under the ice-melt time of the icing and identical ice-melt time.It is corresponding according to the icing form parameter
The ice-melt time and ice melting current, obtain the computation model of the ice-melt time and the ice melting current.The ice-melt time and
The computation model of ice melting current take into account the true form parameter of icing, more meet real ice melting current and ice-melt time rule
Rule.The present invention is simple to operate, easily realizes, it is more accurate that ice melting current and the selection of ice-melt time for powerline ice-covering provide
Foundation.
Brief description of the drawings
Fig. 1 is icing schematic shapes common on transmission pressure described in prior art；
Fig. 2 is the current time characteristic test method flow chart of transmission pressure ice-melt provided in an embodiment of the present invention；
Fig. 3 is the test platform schematic diagram of phjytotron in the embodiment of the present invention；
Fig. 4 is the icing mould structure schematic diagram that icing is manufactured in the embodiment of the present invention；
Fig. 5 is icing form parameter schematic diagram on transmission pressure in the embodiment of the present invention；
Fig. 6 is the current time characteristic test method flow chart for the transmission pressure ice-melt that further embodiment of this invention provides；
Fig. 7 is the current time characteristic test apparatus structure chart of transmission pressure ice-melt provided in an embodiment of the present invention；
Fig. 8 is the current time characteristic test apparatus structure chart for the transmission pressure ice-melt that further embodiment of this invention provides.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Fig. 2 be transmission pressure ice-melt provided in an embodiment of the present invention current time characteristic test method flow chart, such as Fig. 2
Shown, this method includes：S11, according to default icing form parameter, icing is manufactured on transmission pressure；S12, will be described defeated
Current regulation in electric lead records the ice-melt time of the icing to preset value；S13, according to the icing form parameter
With the ice-melt time, the computation model of the ice-melt time is obtained.
Specifically, need to build the test platform of phjytotron before S11, the test platform is led including transmission of electricity
Line, pressure regulator and rising current transformer.The output end of the pressure regulator is connected with the input of the rising current transformer, the up-flow
The output end of transformer is connected by cable with the both ends of the transmission pressure., can in order to detect the temperature of the transmission pressure
Temperature inductor is sticked with the upper and lower surface in the transmission pressure section for preparing manufacture icing.For the safety of guarantee test personnel,
The temperature indicator for connecting the temperature inductor, the pressure regulator and the rising current transformer can be arranged in described artificial
Outside climatic chamber.The transmission pressure is arranged in the artificial climate room, and keeps insulating by insulating carriage and ground.Such as
Shown in Fig. 3.The present embodiment can also be applied to the experiment of transmission pressure ice-melt under natural conditions.
In S11, the icing form parameter includes round flat degree, eccentricity and deflection angle, but the present embodiment be not limited to it is described
Icing form parameter.Three groups of data are preset, every group of packet contains more datas, and each icing shape is included in every data
One numerical value of parameter, wherein, the value of round flat degree is different between pieces of data in first group of data, and the value of eccentricity is identical, partially
The value of corner is also identical；The value of eccentricity is different between pieces of data in second group of data, and the value of round flat degree is identical, deflection angle
Value is also identical；The value of deflection angle is different between pieces of data in 3rd group of data, and the value of round flat degree is identical, the value of eccentricity also phase
Together.According to the value of each icing form parameter in every data, icing is manufactured on the transmission pressure.The present embodiment is not
It is limited to the bar number for the data that every group of packet contains.In S12, the ambient parameter in the artificial climate room, the environment ginseng are set
Number includes one or more in temperature, wind speed, humidity and rainfall, is also turned on the power supply of the pressure regulator, described in regulation
The output voltage of pressure regulator, the electric current for making to be output to the transmission pressure from the rising current transformer reach preset value.For same
The ambient parameter that icing corresponding to one group of data is set is identical.Observe the ice-melt situation of icing on the transmission pressure, and every
A period of time is photographed to record ice-melt situation, while records the value of the ambient parameter in the artificial climate room and described defeated
The temperature of electric lead upper and lower surface.The ice-melt time is the icing on the transmission pressure since regulation electric current is to preset value
To the required time that comes off.In S13, the computation model of the ice-melt time is to include the table on the icing form parameter
Up to formula.The ice-melt time of the icing manufactured according to the value of the icing form parameter and with reference to the value of the icing form parameter,
Obtain the computation model of the ice-melt time.
For example, setting up the support frame of the phjytotron using steel I-beam, the insulation material of surrounding and ceiling is adopted
The polyurethane storehouse warming plate for being 20cm with thickness, the headroom size in the artificial climate room is 4.5m × 4.5m × 8m.It is described
Pressure regulator uses pillar electric voltage regulator, and the capacity of the pressure regulator is 45kVA, input voltage 380V, output voltage 5-
420V.The rising current transformer uses DDG type transformers, and the rated capacity of the rising current transformer is 45kVA, and rated output is electric
Flow for 1500A.The transmission pressure uses model LGJ-460/60 steel-cored aluminium strand, and the length of the transmission pressure is
10m.Assuming that every group of data include five datas, first numerical value is the value of round flat degree in every data, and second numerical value is inclined
The value of heart rate, the 3rd numerical value are the value of deflection angle, and unit is degree.The first data is (0,0.2,15) in first group of data,
Second data is (0.2,0.2,15), and Article 3 data are (0.4,0.2,15), and Article 4 data are (0.6,0.2,15), the
Five datas are (0.8,0.2,15).The value of round flat degree is different in first group of data, and the value difference of eccentricity and deflection angle is identical,
Correspond to 0.2 and 15.Value is different corresponding to eccentricity in second group of data, respectively 0,0.2,0.4,0.5 and 0.7, round flat degree
It is identical with the value difference of deflection angle, correspond to 0.4 and 15.Value is different corresponding to deflection angle in 3rd group of data, respectively 0,15,
30th, 45 and 60, the value difference of round flat degree and eccentricity is identical, corresponds to 0.2 and 0.6.The present embodiment is not limited to cited feelings
Condition.
The present embodiment manufactures icing on transmission pressure, obtains same current according to the value of default icing form parameter
Under the icing the ice-melt time.According to the value of the icing form parameter, and corresponding to the value of the icing form parameter
The ice-melt time, obtain the computation model of the ice-melt time.The computation model of the ice-melt time take into account the reality of icing
Form parameter, more meet real ice-melt temporal regularity.The present invention is simple to operate, easily realizes, is the ice-melt of powerline ice-covering
The selection of time provides more accurate foundation.
On the basis of above-described embodiment, S11 is specifically included in the present embodiment：According to the icing form parameter, obtain
Icing mould；By the icing mould installion on the transmission pressure, and water is injected into the icing mould；Covered described
Water congeals into ice in ice mold, and removes the icing mould.
Specifically, the value of the icing form parameter according to default every data, selects icing mould.Such as Fig. 4 institutes
Show, the icing mould is made up of mold, lower mould and anchor ear, and several are provided with the mold and is used to inject icing water
Water injection hole, the value of the form parameter of the icing mould is the value of the corresponding icing form parameter.The icing mould
Both ends respectively have the cross section identical structure of a bit of cross section and the transmission pressure, to ensure covering from water injection hole injection
Frozen water does not overflow from the both ends of the icing mould.The icing mould installion is included on the transmission pressure：First by institute
State the lower end that lower die horizontal is fixed on the transmission pressure.Then, the mold is fixed on the upper of the transmission pressure
End.According to upper/lower die edge projection vertically and groove, mesh together upper/lower die.Finally, every a segment distance
Anchor ear is enclosed on the icing mould and locked.Tune is injected into the icing mould by the water injection hole of the icing mould
The icing water of whole good electrical conductivity, untill the icing water overflows from the water injection hole.Set in the artificial climate room
The value of ambient parameter, by reducing temperature by water congeals into ice in the icing mould, and the icing manufactured and the transmission of electricity
Wire is reliably bonded.Then the anchor ear of the icing mould is unclamped, removes the mold and the lower mould.
The present embodiment uses Making mold icing, the mould according to the value of default icing form parameter on transmission pressure
Tool installation is easy, easy to use, can simulate real icing, the meter of the ice-melt time according to the value of the icing form parameter
Model is calculated according to the true form parameter acquiring of the icing, more meets real ice-melt temporal regularity.
On the basis of above-described embodiment, S13 is specifically included in the present embodiment：According to every number in every group of data
According to, per the ice-melt time corresponding to data, obtained in this group of data the ice-melt time and each icing form parameter it
Between relation curve；The relation curve being fitted respectively between the ice-melt time and each icing form parameter, obtains institute
State expression formula of the ice-melt time on each icing form parameter；According to the ice-melt time on each icing shape
The expression formula of the expression formula of shape parameter and the ice-melt time on icing quality, obtain the computation model of the ice-melt time.
Specifically, because in every group of data, the value of only one icing form parameter is different, other icing form parameters
It is worth identical, and every data in every group of data manufactures a kind of icing of shape, and the icing of each shape is corresponding with one
The ice-melt time, so as to during every group of data are described in reference axis when the different icing form parameter of value takes different values
The corresponding ice-melt time, further draw out value is different in every group of data icing form parameter and between the ice-melt time
Relation curve.The relation curve being fitted respectively between the ice-melt time and each icing form parameter, described in acquisition
Expression formula of the ice-melt time on each icing form parameter.According to the ice-melt time on each icing shape
The expression formula of the expression formula of parameter and the ice-melt time on icing quality, obtain the computation model of the ice-melt time.Institute
The expression formula that the ice-melt time is stated on icing quality can be paper " the critical current analysis of power line DC short circuit ice-melt "
In ice-melt time computation model.
Specifically, when the icing form parameter only includes round flat degree, eccentricity and deflection angle, the ice-melt time
Computation model obtains in the following manner：
T=k1f(δ)+k2f(σ)+k3f(θ)+k4f(m)；
k1+k2+k3+k4=1；
Wherein, T is the ice-melt time, and f (δ) is expression formula of the ice-melt time on round flat degree δ, f (σ) be the ice-melt time on
Eccentricity σ expression formula, f (θ) are expression formula of the ice-melt time on deflection angle theta, and f (m) is table of the ice-melt time on quality m
Up to formula.k1、k2、k3And k4The weights of the round flat degree of the icing, eccentricity, deflection angle and quality are corresponded to, can be according to level
Analytic approach simultaneously incorporates experience into data and obtained.The round flat degree δ of the icing is obtained in the following manner：
Wherein, a represents the maximum gauge of the icing, and b represents the minimum diameter of the icing.The eccentricity of the icing
σ is obtained in the following manner：
Wherein, d1Represent the distance between the geometric center of the icing and the geometric center of the transmission pressure, d2Represent
The thickness of icing described in windward side；The deflection angle theta of the icing is direction and the horizontal direction of the maximum gauge of the icing
Angle.Fig. 5 is icing form parameter schematic diagram on transmission pressure in the embodiment of the present invention, as shown in Figure 5.
The present embodiment is according to the value of the icing form parameter ice-melt time corresponding with the value of the icing form parameter
Between relation curve, and be fitted the relation curve and obtain expression of the ice-melt time on the icing form parameter
Formula, with reference to expression formula of the ice-melt time on icing quality, obtain the computation model of the ice-melt time.During the ice-melt
Between computation model take into account the true form parameter of icing, more meet real ice-melt temporal regularity.Present invention operation letter
It is single, easily realize, the selection for the ice-melt time of powerline ice-covering provides more accurate foundation.
Fig. 6 be transmission pressure ice-melt provided in an embodiment of the present invention current time characteristic test method flow chart, such as Fig. 6
Shown, this method includes：S21, according to default icing form parameter, icing is manufactured on transmission pressure；S22, described in regulation
Electric current in transmission pressure, the ice-melt time for making the icing is preset time, and records ice melting current, and the ice melting current is
The ice-melt time for making the icing is the electric current of preset time；S23, according to the icing form parameter and the ice melting current,
Obtain ice melting current computation model.
Specifically, need to build the test platform of phjytotron before S21, refer in one embodiment on
Test platform is built, and here is omitted.In S21, the icing form parameter includes round flat degree, eccentricity and deflection angle,
But the present embodiment is not limited to the icing form parameter.Three groups of data are preset, every group of packet contains more datas, every number
Comprising a numerical value corresponding to each icing form parameter in, wherein, round flat between pieces of data in first group of data
The value of degree is different, and the value difference of eccentricity and deflection angle is identical；The value of eccentricity is different between pieces of data in second group of data,
The value of round flat degree and deflection angle difference is identical；The value of deflection angle is different between pieces of data in 3rd group of data, round flat degree and partially
The value difference of heart rate is identical.According to the value of each icing form parameter in every data, manufactured on the transmission pressure
Icing.The present embodiment is not limited to the bar number for the data that every group of packet contains.In S22, the ambient parameter in artificial climate room is set,
The ambient parameter includes the one or more in temperature, wind speed, humidity and rainfall, is also turned on the power supply of pressure regulator, adjusts
The output voltage of the pressure regulator is saved, the electric current for enabling to be output to the transmission pressure from rising current transformer makes melting for the icing
The ice time is preset time.The ice melting current be make the icing the ice-melt time be preset time electric current.The ice-melt
Time is time of the icing since regulation electric current is to preset value to required for coming off on the transmission pressure.It is described in S23
The computation model of ice melting current is to include the expression formula on the icing form parameter.According to the value of the icing form parameter
It is the ice melting current of preset time with the ice-melt time for making the icing, obtains the computation model of the ice melting current.
The present embodiment manufactures icing, acquisition makes described cover according to the value of default icing form parameter on transmission pressure
The ice-melt time of ice is the ice melting current of preset time.According to the value of the icing form parameter, and make melting for the icing
The ice time is the ice melting current of preset time, obtains the computation model of the ice melting current.The computation model of the ice melting current
The true form parameter of icing is take into account, more meets real ice melting current rule.The present invention is simple to operate, easily realizes, is
The selection of the ice melting current of powerline ice-covering provides more accurate foundation.
Fig. 7 be transmission pressure ice-melt provided in an embodiment of the present invention current time characteristic test apparatus structure chart, such as Fig. 7
Shown, the device includes the first manufacture module 11, the first adjustment module 12 and the first acquisition module 13, wherein：
The first manufacture module 11 is used for according to default icing form parameter, and icing is manufactured on transmission pressure；Institute
When stating the first adjustment module 12 to be used for the current regulation in the transmission pressure to preset value, and recording the ice-melt of the icing
Between；First acquisition module 13 is used for according to the icing form parameter and the ice-melt time, obtains the ice-melt time
Computation model.
Specifically, need to build the test platform of phjytotron before the test is conducted, refer to one embodiment
In building on test platform, here is omitted.The icing form parameter includes round flat degree, eccentricity and deflection angle,
But the present embodiment is not limited to the icing form parameter.Three groups of data are preset, every group of packet contains more datas, per data bag
A value containing each icing form parameter, wherein, the value of round flat degree is different between pieces of data in first group of data, partially
The value of heart rate and deflection angle difference is identical；The value of eccentricity is different between pieces of data in second group of data, round flat degree and deflection
The value difference at angle is identical；The value of deflection angle is different between pieces of data in 3rd group of data, the value difference of round flat degree and eccentricity
It is identical.Described first manufactures value of the module 11 according to each icing form parameter in every data, in the transmission pressure
Upper manufacture icing.The present embodiment is not limited to the bar number for the data that every group of packet contains.Ambient parameter in artificial climate room is set,
The ambient parameter includes the one or more in temperature, wind speed, humidity and rainfall, is also turned on the power supply of pressure regulator, institute
The output voltage that the first adjustment module 12 adjusts the pressure regulator is stated, makes the electricity that the transmission pressure is output to from rising current transformer
Stream reaches preset value.The ambient parameter set for icing corresponding to same group of data is identical.The ice-melt time is described defeated
Icing on electric lead is since regulation electric current is to preset value to the required time that comes off.The computation model of the ice-melt time
It is to include the expression formula on the icing form parameter.First acquisition module 13 is according to the number of the icing form parameter
The ice-melt time for the icing that the value of value and the reference icing form parameter manufactures, obtain the computation model of the ice-melt time.
The present embodiment manufactures icing on transmission pressure, obtains identical electricity according to the numerical value of default icing form parameter
Flow down the ice-melt time of the icing.According to the numerical value of the icing form parameter, and the value pair of the icing form parameter
The ice-melt time answered, obtain the computation model of the ice-melt time.The computation model of the ice-melt time take into account icing
True form parameter, more meet real ice-melt temporal regularity.The present invention is simple to operate, easily realizes, is powerline ice-covering
The selection of ice-melt time provides more accurate foundation.
Fig. 8 be transmission pressure ice-melt provided in an embodiment of the present invention current time characteristic test apparatus structure chart, such as Fig. 8
Shown, the device includes the second manufacture module 21, second and adjusts the acquisition module 23 of adjustment module 22 and second, wherein：
The second manufacture module 21 is used for according to default icing form parameter, and icing is manufactured on transmission pressure；Institute
The second adjustment module 22 to be stated to be used to adjust the electric current in the transmission pressure, the ice-melt time for making the icing is preset time,
And record ice melting current, the ice melting current be make the icing the ice-melt time be preset time electric current；Described second obtains
Modulus block 23 is used for the computation model for according to the icing form parameter and the ice melting current, obtaining the ice melting current.
Specifically, need to build the test platform of phjytotron before the test is conducted, refer to one embodiment
In building on test platform, here is omitted.The icing form parameter includes round flat degree, eccentricity and deflection angle,
But the present embodiment is not limited to the icing form parameter.Three groups of data are preset, every group of packet contains more datas, every number
Comprising a numerical value corresponding to each icing form parameter in, wherein, the value of round flat degree is different in first group of data, partially
The value of heart rate and deflection angle difference is identical；The value of eccentricity is different in second group of data, the value difference phase of round flat degree and deflection angle
Together；The value of deflection angle is different in 3rd group of data, and the value difference of round flat degree and eccentricity is identical.The second manufacture module 21
According to the value of each icing form parameter in data every described, icing is manufactured on the transmission pressure.The present embodiment is not limited to
The bar number for the data that every group of packet contains.Ambient parameter in artificial climate room is set, and the ambient parameter includes temperature, wind
One or more in speed, humidity and rainfall, it is also turned on the power supply of pressure regulator.Second adjustment module 22 adjusts described
The output voltage of pressure regulator, the electric current for enabling to be output to the transmission pressure from rising current transformer make ice-melt time of the icing
For preset time.The ice melting current be make the icing the ice-melt time be preset time electric current.For same group of data
The ambient parameter that corresponding icing is set is identical.The ice-melt time is icing on the transmission pressure from regulation electric current to pre-
If value started to the required time that comes off.The computation model of the ice melting current is to include on the icing form parameter
Expression formula.Second acquisition module 23 is according to the value of the icing form parameter and makes ice-melt time of the icing be default
The ice melting current of time, obtain the computation model of the ice melting current.
The present embodiment manufactures icing, acquisition makes described cover according to the value of default icing form parameter on transmission pressure
The ice-melt time of ice is the ice melting current of preset time.According to the value of the icing form parameter, and make melting for the icing
The ice time is the ice melting current of preset time, obtains the computation model of the ice melting current.The computation model of the ice melting current
The true form parameter of icing is take into account, more meets real ice melting current rule.The present invention is simple to operate, easily realizes, is
The selection of the ice melting current of powerline ice-covering provides more accurate foundation.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., the protection of the present invention should be included in
Within the scope of.
Claims (10)
- A kind of 1. current time characteristic test method of transmission pressure ice-melt, it is characterised in that including：S11, according to icing form parameter, icing is manufactured on transmission pressure；S12, by the current regulation in the transmission pressure to preset value, and record the ice-melt time of the icing；S13, according to the icing form parameter and the ice-melt time, obtain the computation model of the ice-melt time.
- 2. the current time characteristic test method of transmission pressure ice-melt according to claim 1, it is characterised in that described S11 is specifically included：According to the icing form parameter, icing mould is obtained；By the icing mould installion on the transmission pressure, and water is injected into the icing mould；By water congeals into ice in the icing mould, and remove the icing mould.
- 3. the current time characteristic test method of transmission pressure ice-melt according to claim 1, it is characterised in that described to cover Ice form parameter includes round flat degree, eccentricity and deflection angle.
- 4. the current time characteristic test method of transmission pressure ice-melt according to claim 3, it is characterised in that S11 has Body includes:Three groups of data are preset, every group of packet contains more datas, and the one of each icing form parameter is included in every data Individual value, wherein, the value of round flat degree is different between pieces of data in first group of data, and the value difference of eccentricity and deflection angle is identical； The value of eccentricity is different between pieces of data in second group of data, and the value difference of round flat degree and deflection angle is identical；3rd group of data The value of deflection angle is different between middle pieces of data, and the value difference of round flat degree and eccentricity is identical；According to the value of icing form parameter in every data, icing is manufactured on the transmission pressure.
- 5. the current time characteristic test method of transmission pressure ice-melt according to claim 4, it is characterised in that S13 has Body includes：The ice-melt time corresponding to per data in every data in every group of data and this group of data, melt described in acquisition Relation curve between ice time and each icing form parameter；The relation curve being fitted respectively between the ice-melt time and each icing form parameter, obtains the ice-melt time Expression formula on each icing form parameter；According to the ice-melt time on the expression formula of each icing form parameter and the ice-melt time on icing matter The expression formula of amount, obtain the computation model of the ice-melt time.
- 6. the current time characteristic test method of transmission pressure ice-melt according to claim 3, it is characterised in that described to cover The round flat degree δ of ice is obtained by following formula：<mrow> <mi>&delta;</mi> <mo>=</mo> <mn>1</mn> <mo>-</mo> <mfrac> <mi>b</mi> <mi>a</mi> </mfrac> <mo>;</mo> </mrow>Wherein, a represents the maximum gauge of the icing, and b represents the minimum diameter of the icing；The eccentricity σ of the icing is obtained by following formula：<mrow> <mi>&sigma;</mi> <mo>=</mo> <mfrac> <msub> <mi>d</mi> <mn>1</mn> </msub> <msub> <mi>d</mi> <mn>2</mn> </msub> </mfrac> <mo>;</mo> </mrow>Wherein, d1Represent the distance between the geometric center of the icing and the geometric center of the transmission pressure, d2Represent windward The thickness of icing described in side；The deflection angle theta of the icing is the maximum gauge of the icing and the angle of horizontal direction.
- 7. the current time characteristic test method of transmission pressure ice-melt according to claim 6, it is characterised in that described to melt The computation model of ice time is：T=k1f(δ)+k2f(σ)+k3f(θ)+k4F (m),k1+k2+k3+k4=1；Wherein, T is the ice-melt time, and f (δ) is expression formula of the ice-melt time on the round flat degree δ of the icing, when f (σ) is ice-melt Between on the icing eccentricity σ expression formula, f (θ) is expression formula of the ice-melt time on the deflection angle theta of the icing, f (m) it is expression formula of the ice-melt time on the quality m of the icing, k1、k2、k3And k4Correspond to the icing round flat degree, partially The weights of heart rate, deflection angle and quality.
- A kind of 8. current time characteristic test method of transmission pressure ice-melt, it is characterised in that including：S21, according to default icing form parameter, icing is manufactured on transmission pressure；S22, the electric current in the transmission pressure is adjusted, the ice-melt time for making the icing is preset time, and records ice-melt electricity Stream, the ice melting current be make the icing the ice-melt time be preset time electric current；S23, according to the icing form parameter and the ice melting current, obtain the computation model of the ice melting current.
- A kind of 9. current time characteristic test apparatus of transmission pressure ice-melt, it is characterised in that including：First manufacture module, for according to default icing form parameter, icing to be manufactured on transmission pressure；First adjustment module, for preset value, and the current regulation in the transmission pressure to be recorded into the ice-melt of the icing Time；First acquisition module, for according to the icing form parameter and the ice-melt time, obtaining the meter of the ice-melt time Calculate model.
- A kind of 10. current time characteristic test apparatus of transmission pressure ice-melt, it is characterised in that including：Second manufacture module, for according to default icing form parameter, icing to be manufactured on transmission pressure；Second adjustment module, for adjusting the electric current in the transmission pressure, the ice-melt time for making the icing is preset time, And record ice melting current, the ice melting current be make the icing the ice-melt time be preset time electric current；Second acquisition module, for according to the icing form parameter and the ice melting current, obtaining the meter of the ice melting current Calculate model.
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