CN106339575A - Method for establishing steady-state thermal circuit model of 10kV three-core cable based on segmentation method - Google Patents
Method for establishing steady-state thermal circuit model of 10kV three-core cable based on segmentation method Download PDFInfo
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Abstract
The invention discloses a method for establishing a steady-state thermal circuit model of a 10kV three-core cable based on a segmentation method. The method comprises the following steps: according to symmetry of temperature distribution of a radial section of the three-core cable, symmetrically segmenting the radial section of the three-core cable to form 1/3 radial-section three-core cable parts, wherein each segmented part contains a cable core; according to a heat transfer principle, establishing a simplified steady-state thermal circuit model of the 10kV three-core cable; for each segmented 1/3 three-core cable part, calculating the thermal resistance of each material layer; by a node voltage method in a comparison circuit, establishing a temperature equation for each node, and deducing a calculation formula for working out a conductor temperature from a cable skin temperature of the 10kV three-core cable under a steady-state condition. According to the method, the radial section of the three-core cable is symmetrically segmented into three parts by the segmentation method, so as to establish the steady-state thermal circuit model of the segmented 1/3 three-core cable part, so that a steady-state thermal circuit calculating model of the cable in the practical application can be guided, and deducing calculation of the real-time conductor temperature from the real-time cable skin temperature can be achieved.
Description
Technical field
The present invention relates to the technical field of power cable analysis.A kind of specifically related to 10kv three-core cable based on split plot design
The construction method of stable state thermal circuit model.
Background technology
With developing rapidly of China's economy, city need for electricity increasingly increases, and this situation directly results in urban distribution network
Current-carrying capacity of cable is increasing.Therefore, it is more likely that distribution network cable current-carrying capacity occurs exceed the upper limit, i.e. cable overload situations.Cable
When heavy overload runs, because cable core is overheated, make the temperature of insulating barrier exceed its highest tolerable temperature, cause insulating barrier
Insulating properties reduce, accelerating cable aging, or even causing cable to break down, thus causing seriously to urban electricity supply reliability
Threaten.Further, since distribution network cable load fluctuation is larger, some period loads are far from reaching its rated current-carrying capacity, do not have
There is the transmittability making full use of cable, this will result in the waste of cable resource, greatly reduces economy.Based on above-mentioned feelings
Condition, the method for the fully operation conditions of grasp distribution network cable, and measurement and calculating three-core cable conductor temperature seems and very must
Will.
The determination of power cable conductor temperature is significant to current-carrying capacity, and it is to determine whether cable reaches specified load
The foundation of flow.In order to obtain operating three-core cable conductor temperature, according to the cable outer skin temperature measuring, and can lead to
It is calculated cable conductor temperature after accordingly, cable conductor temperature is calculated by cable surface temperature.At present, by cable surface
Temperature calculates that the research method of cable conductor temperature is mainly Re Lufa, because upper three-core cable structure is special, using Re Lufa
During calculating, except iec standard, domestic scholars propose three cores according to its structural particularity again and carry out setting up hot road with axiation method,
Although above method also can extrapolate cable conductor temperature by cable skin temperature, all right for studying with whole three-core cable
As.Now, the shadow that the mutual heat transfer between internal three cores of three-core cable and three cores each externally conduct heat will be considered
Ring, considerably increase the complexity of research, also increase the difficulty of thermal circuit model foundation simultaneously, and then be difficult to accurately calculate three
Core cable is to conductor temperature, thus the current-carrying capacity size running cable cannot correctly be determined.Thus, find a kind of easy by three
Core cable surface temperature calculates that the method for conductor temperature has and important has meaning.
Content of the invention
The invention aims to solving drawbacks described above of the prior art, provide a kind of 10kv tri- based on split plot design
The construction method of core cable stable state thermal circuit model, this invention utilizes split plot design, and three-core cable radial section symmetry division is three
Part, set up segmentation after 1/3 three-core cable stable state thermal circuit model, derive under the model by cable skin temperature computation
The formula of conductor temperature, draws the cable steady state thermal road computation model that can instruct practical application.
The purpose of the present invention can be reached by adopting the following technical scheme that:
A kind of construction method of the 10kv three-core cable stable state thermal circuit model based on split plot design, under described construction method includes
Row step:
S1, the symmetry according to three-core cable radial section Temperature Distribution, three-core cable radial section symmetry division is
1/3 radial section three-core cable, each section of segmentation comprises single line core；
S2, according to heat transfer principle, set up the 10kv three-core cable stable state thermal circuit model after simplifying；
S3, to segmentation after 1/3 three-core cable, calculate layers of material thermal resistance, comprising: insulating barrier thermal resistance, packed layer heat
Resistance, inner sheath thermal resistance and oversheath thermal resistance；
The nodal method of analysis in s4, analogy circuit, sets up the temperature equation of each node, derives that 10kv three-core cable is steady
Solved the computing formula of conductor temperature by cable skin temperature under the conditions of state.
Further, described step s2 particularly as follows:
When setting up the thermal circuit model of multilayer material, the material of identical thermal conductivity factor is classified as one layer of thermal resistance, then by three core electricity
The thermo parameters method feature of cable, when the border of different structure is on same thermoisopleth as the node in thermal circuit model,
Core according within cable in cable radiation processes externally transmits heat as thermal source, sets up with cable conductor as starting point, warp
Cable layers of material outwards transfers heat to the thermal circuit model of cable surface.
Further, in described step s2,
Conductor shield and insulation screen are equivalent to a part for insulating barrier.
Further, in described step s2,
When setting up 10kv three-core cable stable state thermal circuit model, ignore the thermal resistance of conductor, metal screen layer and armouring.
Further, the thermal resistance of described insulating barrier thermal resistance, described inner sheath thermal resistance and described oversheath thermal resistance three part by
Following formula is tried to achieve:
In formula, d2For the outside diameter of annulus, d1For the interior circular diameter of annulus, l is cable length, and λ is the heat conduction system of material
Number.
Further, thermal resistance ro of described packed layer is by formulaCalculate thermal resistance value r ', then be multiplied by with this value
/ 3rd packed layer areas and the ratio of inner sheath inner circle area, d3Extremely adjacent two, the center of circle for three-core cable cross circular section
The distance of points of tangency, d between core4Interior circular diameter for inner sheath.
Further, the calculating public affairs of conductor temperature are solved under described 10kv three-core cable limit by cable skin temperature
Formula:
θ1=θ0+t1·(qc+qd)+(t2+t3)·(qc+qd+λ1qc)+t4·[qd+(1+λ1+λ2)·qc],
Wherein, qcThe conductor losses producing for cable core, qdFor insulating barrier, insulation screen and conductor shield three
Dielectric loss sum, λ1For the loss factor of metal screen layer, λ2For the loss factor of armor, θ1For cable conductor temperature,
θ2For metal screen layer temperature, θ3For armor temperature, θ0For cable skin temperature, t1For insulating barrier, insulation screen and conductor
The thermal resistance of screen layer three, t2For packed layer thermal resistance, t3For inner sheath thermal resistance, t4For oversheath thermal resistance.
The present invention has such advantages as with respect to prior art and effect:
1. conventional adopt Re Lufa calculate three-core cable conductor temperature when with whole three-core cable as research object, consider
The impact that mutual heat transfer between internal three cores of three-core cable and three cores each externally conduct heat, the foundation ratio of model
More difficult.And patent of the present invention overcomes this problem, using split plot design, three-core cable radial section symmetry division is three
Point, set up the stable state thermal circuit model of 1/3 three-core cable after segmentation.
2. patent of the present invention gives the cable steady state thermal road computation model that can instruct practical application, it is possible to achieve by reality
When cable skin temperature computation calculate real-time conductor temperature.
Brief description
Fig. 1 is 1/3rd cable longitudinal section view；
Fig. 2 is 10kv three-core cable stable state thermal circuit model；
Fig. 3 is a kind of construction method of the 10kv three-core cable stable state thermal circuit model based on split plot design disclosed in the present invention
Flow chart.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment being obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
According to the symmetry of three-core cable radial section thermal field simulation model Temperature Distribution, by three-core cable radial section pair
Claim to be divided into three parts, each section of segmentation carries single line core, and that is, symmetry division is 1/3 radial section three-core cable, such as
Shown in Fig. 1.1/3 three-core cable after to split, as research object, sets up stable state thermal circuit model, derive under the model by electricity
Cable skin temperature calculates the formula of conductor temperature, draws the cable steady state thermal road computation model that can instruct practical application.
As shown in figure 3, Fig. 3 is a kind of 10kv three-core cable stable state thermal circuit model based on split plot design disclosed in the present invention
Construction method flow chart, the structure of the 10kv three-core cable stable state thermal circuit model based on split plot design disclosed in the present embodiment
Method specifically includes following steps:
S1, the symmetry according to three-core cable radial section Temperature Distribution, three-core cable radial section symmetry division is
1/3 radial section three-core cable, each section of segmentation carries single line core, as shown in Figure 1.
S2, according to heat transfer principle, set up the 10kv three-core cable stable state thermal circuit model after simplifying.
In concrete application, according to the principle of knowledge of thermal conduction study, can lead identical when setting up the thermal circuit model of multilayer material
The material of hot coefficient is classified as one layer of thermal resistance, then the thermo parameters method feature from three-core cable, and the border of different structure is same
Can be used as the node in thermal circuit model when on one thermoisopleth.In cable radiation processes, because the core within cable is as warm
Heat is externally transmitted in source, therefore, can set up with cable conductor as starting point, outwards transfer heat to cable surface through cable layers of material
Thermal circuit model.
When setting up thermal circuit model, 2 points of simplification can be done according to the feature of cable layers of material parameter: first, due to conductor
The thermal conductivity factor of screen layer and insulation screen differs very little with the thermal conductivity factor of insulating barrier, thus can by conductor shield and absolutely
Edge screen layer is equivalent to a part for insulating barrier；Second, because the material of conductor, metal screen layer is copper, the material of armouring is
Steel, the thermal conductivity factor of three kinds of materials is big, and its thermal resistance is very little, produces impact to the overall diabatic process of cable and almost can neglect
Slightly.Therefore, when setting up 10kv three-core cable stable state thermal circuit model, often ignore the thermal resistance of this three part.After final simplification
Stable state thermal circuit model is as shown in Figure 2:
The definition of each parameter in stable state thermal circuit model is: qcThe conductor losses producing for cable core；qdFor insulating barrier, absolutely
The dielectric loss sum of edge screen layer and conductor shield three；λ1Loss factor for metal screen layer；λ2Damage for armor
Consumption factor；θ1For cable conductor temperature；θ2For metal screen layer temperature；θ3For armor temperature；θ0For cable skin temperature；t1For
The thermal resistance of insulating barrier, insulation screen and conductor shield three；t2For packed layer thermal resistance；t3For inner sheath thermal resistance；t4For outer shield
Set thermal resistance.
S3, to segmentation after 1/3 three-core cable, calculate layers of material thermal resistance.
From the thermal circuit model of the 10kv three-core cable set up, thermal resistance specifically includes that insulating barrier thermal resistance, packed layer heat
Resistance, inner sheath thermal resistance and oversheath thermal resistance.In 1/3rd 10kv three-core cables after singulation, the cross section of insulating barrier is rule
The cross section of annulus then, inner sheath and oversheath is also 1/3rd annulus of rule, therefore, according to the knowledge of thermal conduction study,
The thermal resistance of this three part can be tried to achieve by following formula:
In formula, d2For the outside diameter of annulus, d1For the interior circular diameter of annulus, l is cable length, and λ is the heat conduction system of material
Number.
For packed layer it is also possible to calculating its thermal resistance similar to formula (1a), but because the cross section of packed layer is not
The toroidal of rule, therefore can not directly be calculated, and the knowledge according to thermal conduction study, can be with the d in modus ponens (1a)2For
The interior circular diameter d of inner sheath4, take d1Distance for center of circle points of tangency to adjacent both threads core of three-core cable cross circular section
d3, then thermal resistance value r can be calculated by formula (1b) ', then it is multiplied by 1/3rd packed layer areas and inner sheath inner headed face with this value
Long-pending ratio, you can obtain required packed layer thermal resistance ro.
S4, according to the nodal method of analysis in Circuit theory, to each node row node temperature equation in Fig. 2 model, can obtain:
θ1-θ2=t1·(qc+qd) (2)
θ2-θ3=(t2+t3)·(qc+qd+λ1qc) (3)
θ3-θ0=t4·[qd+(1+λ1+λ2)qc] formula (2), (3) are added and can obtain with (4) by (4):
θ1=θ0+t1·(qc+qd)+(t2+t3)·(qc+qd+λ1qc)+t4·[qd+(1+λ1+λ2)·qc]
Above formula is the computing formula being solved conductor temperature under 10kv three-core cable limit by cable skin temperature.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not subject to above-described embodiment
Limit, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplify,
All should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (7)
1. a kind of construction method of the 10kv three-core cable stable state thermal circuit model based on split plot design is it is characterised in that described structure
Method comprises the following steps:
S1, the symmetry according to three-core cable radial section Temperature Distribution, three-core cable radial section symmetry division is 1/3 footpath
To section three-core cable, each section of segmentation comprises single line core；
S2, according to heat transfer principle, set up the 10kv three-core cable stable state thermal circuit model after simplifying；
S3, to 1/3 three-core cable after segmentation, calculate the thermal resistance of layers of material, comprising: insulating barrier thermal resistance, packed layer thermal resistance, interior
Sheath thermal resistance and oversheath thermal resistance；
The nodal method of analysis in s4, analogy circuit, sets up the temperature equation of each node, derives 10kv three-core cable stable state bar
Solved the computing formula of conductor temperature by cable skin temperature under part.
2. the construction method of a kind of 10kv three-core cable stable state thermal circuit model based on split plot design according to claim 1,
It is characterized in that, described step s2 particularly as follows:
When setting up the thermal circuit model of multilayer material, the material of identical thermal conductivity factor is classified as one layer of thermal resistance, then by three-core cable
Thermo parameters method feature, when the border of different structure is on same thermoisopleth as the node in thermal circuit model, according to
In cable radiation processes, the core within cable externally transmits heat as thermal source, sets up with cable conductor as starting point, through cable
Layers of material outwards transfers heat to the thermal circuit model of cable surface.
3. the construction method of a kind of 10kv three-core cable stable state thermal circuit model based on split plot design according to claim 1,
It is characterized in that, in described step s2,
Conductor shield and insulation screen are equivalent to a part for insulating barrier.
4. the construction method of a kind of 10kv three-core cable stable state thermal circuit model based on split plot design according to claim 1,
It is characterized in that, in described step s2,
When setting up 10kv three-core cable stable state thermal circuit model, ignore the thermal resistance of conductor, metal screen layer and armouring.
5. the construction method of a kind of 10kv three-core cable stable state thermal circuit model based on split plot design according to claim 1,
It is characterized in that,
The thermal resistance of described insulating barrier thermal resistance, described inner sheath thermal resistance and described oversheath thermal resistance three part is tried to achieve by following formula:
In formula, d2For the outside diameter of annulus, d1For the interior circular diameter of annulus, l is cable length, and λ is the thermal conductivity factor of material.
6. the construction method of a kind of 10kv three-core cable stable state thermal circuit model based on split plot design according to claim 1,
It is characterized in that,
Thermal resistance ro of described packed layer is by formulaCalculate thermal resistance value r ', then it is multiplied by 1/3rd packed layers with this value
Area and the ratio of inner sheath inner circle area, d3For points of tangency between the center of circle extremely adjacent both threads core of three-core cable cross circular section
Distance, d4Interior circular diameter for inner sheath.
7. the construction method of a kind of 10kv three-core cable stable state thermal circuit model based on split plot design according to claim 1,
It is characterized in that,
By the computing formula of cable skin temperature solution conductor temperature under described 10kv three-core cable limit:
θ1=θ0+t1·(qc+qd)+(t2+t3)·(qc+qd+λ1qc)+t4·[qd+(1+λ1+λ2)·qc],
Wherein, qcThe conductor losses producing for cable core, qdJie for insulating barrier, insulation screen and conductor shield three
Matter is lost sum, λ1For the loss factor of metal screen layer, λ2For the loss factor of armor, θ1For cable conductor temperature, θ2For
Metal screen layer temperature, θ3For armor temperature, θ0For cable skin temperature, t1For insulating barrier, insulation screen and conductor shielding
The thermal resistance of layer three, t2For packed layer thermal resistance, t3For inner sheath thermal resistance, t4For oversheath thermal resistance.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107194027A (en) * | 2017-04-18 | 2017-09-22 | 华南理工大学 | Aluminium hydraulic pressed connecting pipe Heat Transfer Calculation at a kind of cable intermediate joint |
| CN107831388A (en) * | 2017-11-03 | 2018-03-23 | 广州供电局有限公司 | The recognition methods of cluster 10kV cable runs overload and system |
| CN108344898A (en) * | 2018-01-31 | 2018-07-31 | 华南理工大学 | A kind of preformed armor rods incision position contact resistance experimental measurement method based on heat to electricity conversion |
| CN109633334A (en) * | 2018-12-29 | 2019-04-16 | 广东电网有限责任公司 | A kind of electric heating combines thermal cycling ageing method, apparatus, equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245691A (en) * | 2013-04-15 | 2013-08-14 | 华南理工大学 | Method for measuring thermal resistance of three-core cable packing layer |
| CN103336023A (en) * | 2013-06-04 | 2013-10-02 | 华南理工大学 | Calculation method of thermal resistance of power cable |
| CN104636555A (en) * | 2015-02-06 | 2015-05-20 | 华南理工大学 | 10kV three-core cable temperature field model establishing method |
| CN105975690A (en) * | 2016-05-05 | 2016-09-28 | 苏州华天国科电力科技有限公司 | Construction method of transient state thermal circuit model of 10kV three-core cable on the basis of segmentation method |
-
2016
- 2016-08-15 CN CN201610667909.1A patent/CN106339575A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245691A (en) * | 2013-04-15 | 2013-08-14 | 华南理工大学 | Method for measuring thermal resistance of three-core cable packing layer |
| CN103336023A (en) * | 2013-06-04 | 2013-10-02 | 华南理工大学 | Calculation method of thermal resistance of power cable |
| CN104636555A (en) * | 2015-02-06 | 2015-05-20 | 华南理工大学 | 10kV three-core cable temperature field model establishing method |
| CN105975690A (en) * | 2016-05-05 | 2016-09-28 | 苏州华天国科电力科技有限公司 | Construction method of transient state thermal circuit model of 10kV three-core cable on the basis of segmentation method |
Non-Patent Citations (1)
| Title |
|---|
| 王鹏等: "基于灵敏度法的三芯电缆线芯温度影响因素分析", 《电线电缆》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107194027A (en) * | 2017-04-18 | 2017-09-22 | 华南理工大学 | Aluminium hydraulic pressed connecting pipe Heat Transfer Calculation at a kind of cable intermediate joint |
| CN107194027B (en) * | 2017-04-18 | 2020-05-22 | 华南理工大学 | Heat transfer calculation method for crimping pipe at cable intermediate joint |
| CN107831388A (en) * | 2017-11-03 | 2018-03-23 | 广州供电局有限公司 | The recognition methods of cluster 10kV cable runs overload and system |
| CN107831388B (en) * | 2017-11-03 | 2020-01-07 | 广州供电局有限公司 | Method and system for identifying overload of cluster 10kV cable line |
| CN108344898A (en) * | 2018-01-31 | 2018-07-31 | 华南理工大学 | A kind of preformed armor rods incision position contact resistance experimental measurement method based on heat to electricity conversion |
| CN109633334A (en) * | 2018-12-29 | 2019-04-16 | 广东电网有限责任公司 | A kind of electric heating combines thermal cycling ageing method, apparatus, equipment and storage medium |
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Application publication date: 20170118 |