CN109376487B - Calculation method for temperature difference deformation of GIS long bus structure in high altitude region - Google Patents
Calculation method for temperature difference deformation of GIS long bus structure in high altitude region Download PDFInfo
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Abstract
A method for calculating temperature difference deformation of a GIS long bus structure in a high-altitude area solves the problems that the error of a linear expansion coefficient calculated by the traditional theoretical temperature difference deformation is large, and each characteristic geometric unit, cylinder blind plate force, bolt pretightening force and concrete expansion force in the GIS long bus structure cannot be considered. By providing a complete GIS long bus structure temperature difference deformation calculation method which takes the surface temperature of the bus cylinder and the thermal deformation displacement value of each characteristic unit as data bases to fit the comprehensive thermal expansion coefficient of the GIS long bus structure and takes finite element software as a tool, the measurement of replacing a total station with the temperature difference deformation predicted by combining temperature measurement and finite element calculation is finally achieved. The temperature difference deformation condition of each characteristic geometric unit of the GIS long bus structure is clearly presented, and practical theoretical guidance is provided for the initial station building work of the GIS long bus structure and the stable operation after the station building.
Description
Technical Field
The invention belongs to the technical field of transformer substation safety, and particularly relates to a method for calculating temperature difference deformation of a GIS (gas insulated switchgear) long bus structure in a high altitude area, which can solve the problems of difficulty in the calculation process of the conventional temperature difference deformation displacement theory, poor data accuracy, fussy measurement of a total station and long time consumption, fully considers the temperature difference deformation condition of each characteristic unit in the GIS long bus structure and can provide practical theoretical guidance for smooth operation of GIS equipment in the high altitude area.
Background
In recent years, a GIS long bus structure is widely used in a Qinghai power grid, and important hardware guarantee is provided for creating a strong Qinghai power grid. Because the Qinghai belongs to the high-altitude large-temperature-difference area, under the special regional meteorological condition, the GIS long bus structure has the characteristics of high exposure failure rate, poor stability and the like, and the phenomenon of serious soil erosion occurs.
In the long-term research on the GIS long bus structure, the temperature difference deformation is found to be one of the main factors influencing the normal work of the GIS long bus structure. Therefore, accurate assessment of temperature difference deformation of the GIS long bus structure is facilitated, and safe and stable operation of the GIS long bus structure is facilitated. However, in the traditional thermal deformation calculation process, factors such as each geometric characteristic unit in the GIS equipment and the blind plate force of the cylinder, the bolt pretightening force and the expansion force of the concrete cannot be accurately considered, only one-dimensional linear theoretical calculation can be performed according to the theoretical linear expansion coefficient of the cylinder material and the theoretical linear expansion coefficient of the concrete, and the accuracy of the thermal deformation calculation of the GIS long bus structure is seriously reduced. In addition, the total station consumes a great amount of manpower and material resources in the GIS equipment measurement process. Therefore, it is necessary to improve the temperature difference deformation calculation method of the existing high-altitude area GIS equipment.
Disclosure of Invention
The invention aims at the problems, and provides a method for calculating the temperature difference deformation of the high-altitude area GIS long bus structure, which can solve the problems of difficult calculation process and poor data accuracy of the conventional temperature difference deformation displacement theory, and complicated measurement and long time consumption of a total station, fully considers the temperature difference deformation condition of each characteristic unit in the GIS long bus structure, and can provide practical theoretical guidance for the stable operation of GIS equipment in the high-altitude area.
The technical scheme adopted by the invention is as follows: the method for calculating the temperature difference deformation of the GIS long bus structure in the high-altitude area comprises the following steps:
firstly, measuring the temperature on the surface of a GIS long bus structure cylinder and the surface of a flange plate, respectively measuring the temperature when the weather temperature rises and falls within 24 hours, and measuring for at least 5 times;
secondly, arranging a prism device at a flange plate of the GIS long bus structure, measuring the position coordinates of the prism by using a total station, and simultaneously measuring the temperature by using the total station so as to ensure that the accurate coordinates of the corresponding prism device at the temperature of each time point are obtained;
selecting temperature data of any time point and prism coordinates corresponding to the temperature data as reference points, and calculating difference values of the temperatures of other time points and the prism coordinates corresponding to the temperature data and the prism coordinates and the reference points;
step four, according to the corrected thermal expansion coefficient calculation formula:
in the formula (I), the compound is shown in the specification,L-datum position
dlThe amount of relative change from the position of the reference point
dTThe relative change from the reference point temperature
ΔTIntegral temperature variation
γ-weight coefficients
EModulus of elasticity
Fitting comprehensive axial linear expansion coefficients of the cylinder, the flange plate and the compensation unit in the GIS long bus structure under the action of cylinder blind plate force, bolt pretightening force and concrete thermal deformation expansion force;
step five, establishing a GIS long bus structure geometric model of 1 according to the measuring result of the total station of the selected datum point, and importing finite element numerical simulation software for grid division;
setting mechanical performance parameters such as linear expansion coefficient, elastic modulus, poisson's ratio and the like corresponding to a geometric model in a GIS long bus structure;
step seven, interpolating other temperature measurement results into a finite element model of the GIS long bus structure to serve as a temperature boundary condition, and reasonably setting other boundary conditions according to the installation mode of the GIS long bus structure equipment;
step eight, solving and calculating to obtain temperature difference deformation values of the GIS long bus structure at different temperatures;
step nine, calculating the weight coefficient under each stress state according to the finite element calculation resultγ；
Step ten, comparing the finite element calculation result with the measurement result of the actual total station, and calculating the error range of the finite element model;
and step eleven, utilizing the established finite element model, combining with the field temperature measurement, correcting a thermal expansion calculation formula to calculate a comprehensive thermal expansion coefficient, and predicting and calculating the temperature difference deformation of the GIS long bus structure.
The position change measurement of each geometric characteristic unit in the GIS long bus structure is realized by the cooperation of a total station and a prism.
The linear expansion coefficient obtained by fitting each geometric characteristic unit in the GIS long bus structure is a comprehensive linear expansion coefficient under the combined action of factors such as cylinder blind plate force, bolt pretightening force, concrete expansion deformation force and the like.
The calculation process of the temperature difference deformation of the GIS long bus structure is realized by a finite element method.
In the finite element calculation process of the GIS long bus structure, heat transfer calculation is not needed, and interpolation calculation is directly carried out according to the measured temperature of each geometric characteristic of the GIS long bus structure.
In the temperature difference deformation calculation of the GIS long bus structure, the weight coefficient in the formula for correcting the thermal expansion coefficient is solved by using the finite element calculation resultγ。
In the temperature difference deformation calculation of the GIS long bus structure, the specific stress state of a site is measured, the comprehensive thermal expansion coefficient is calculated by using a correction thermal expansion coefficient formula, and the measurement of a total station is replaced by a method for calculating the temperature difference deformation by combining a finite element.
In the temperature difference deformation calculation of the GIS long bus structure, a method of calculating temperature difference deformation by combining temperature measurement and finite elements is used for replacing measurement of a total station.
The invention has the beneficial effects that: by providing a complete set of calculation method for GIS long bus structure temperature difference deformation by taking the bus cylinder surface temperature and each characteristic unit thermal deformation displacement value as data bases and fitting the comprehensive thermal expansion coefficient of the GIS long bus structure and taking finite element software as a tool, the measurement of replacing a total station instrument with the temperature measurement combined with the finite element calculation prediction temperature difference deformation is finally achieved. According to the method, a method of combining temperature measurement with total station displacement measurement is utilized to accurately calculate the comprehensive linear expansion coefficient of each characteristic geometric unit in the GIS long bus structure, and a finite element method is utilized to calculate, so that each geometric characteristic unit, bolt pretightening force, cylinder blind plate force, concrete expansion force and friction force among the characteristic geometric units in the GIS long bus structure are considered; the influence of the geometric dimension of the model on the temperature difference deformation result can be fully considered, and the accuracy of the calculation of the temperature difference deformation of the GIS long bus structure is improved to the maximum extent. Meanwhile, the strong post-processing system of finite element calculation can clearly present the temperature difference deformation conditions of each characteristic geometric unit of the GIS long bus structure, and the temperature difference deformation conditions can provide practical and effective theoretical guidance for the initial station construction work of the GIS long bus structure and the stable operation after the station construction.
Drawings
Fig. 1 is a schematic diagram of a GIS long busbar structure, a total station, and prism positions.
FIG. 2 is a temperature change diagram of a GIS long bus structure cylinder and a flange plate.
Fig. 3 is a diagram of the temperature difference deformation of each characteristic geometric unit of the GIS long busbar structure, and the number values of the legend on the right side of the diagram correspond to the number values in fig. 1, for example: "A1" in fig. 3 represents the position "1" in fig. 1, and "a41" in fig. 3 represents the position "4-1" in fig. 1.
Fig. 4 is a geometric model diagram of a GIS long busbar structure.
Fig. 5 is a detailed view of each characteristic geometric unit of the GIS long bus structure, in which the number 1 is a compensation unit device, the number 2 is a sliding support device, the number 3 is a flange device with a pretightening bolt, and the number 4 is a fixed support.
FIG. 6 is a GIS long bus deformation displacement value distribution cloud chart.
Fig. 7 is a partially enlarged view of fig. 6.
Detailed Description
The method for calculating the temperature difference deformation of the GIS long bus structure in the high-altitude area can solve the problems that the error of the linear expansion coefficient calculated by the traditional theoretical temperature difference deformation is large, and each characteristic geometric unit, cylinder blind plate force, bolt pretightening force and concrete expansive force in the GIS long bus structure cannot be considered.
The method for calculating the temperature difference deformation of the GIS long bus structure in the high-altitude area comprises the following steps:
the method comprises the following steps of firstly, measuring the temperature on the surface of a GIS long bus structure cylinder and the surface of a flange plate, respectively measuring the temperature when the weather temperature rises and falls within 24 hours, and measuring at least 5 times.
And secondly, arranging a prism device at the flange plate of the GIS long bus structure, measuring the position coordinates of the prism by using a total station, and simultaneously measuring the temperature by using the total station so as to ensure that the accurate coordinates of the corresponding prism device at the temperature of each time point are obtained.
And thirdly, selecting the temperature data of any time point and the prism coordinate corresponding to the temperature data as a reference point, and calculating the difference between the temperatures of other time points and the prism coordinate points corresponding to the temperatures and the reference point.
Step four, according to the corrected thermal expansion coefficient calculation formula:
in the formula (I), the compound is shown in the specification,L-datum position
dlThe amount of relative change from the position of the reference point
dT-relative change in temperature from the reference point
ΔTIntegral temperature variation
γ-weight coefficients
EModulus of elasticity
And fitting comprehensive axial linear expansion coefficients of the cylinder, the flange plate and the compensation unit in the GIS long bus structure under the action of the cylinder blind plate force, the bolt pretightening force and the concrete thermal deformation expansion force.
And step five, establishing a GIS long bus structure geometric model of the step 1 according to the measurement result of the total station of the selected datum point, and importing finite element numerical simulation software for grid division.
And sixthly, setting mechanical performance parameters such as linear expansion coefficient, elastic modulus, poisson's ratio and the like corresponding to the geometric model in the GIS long bus structure.
And step seven, interpolating other temperature measurement results into a GIS long bus structure finite element model to serve as a temperature boundary condition, and reasonably setting other boundary conditions according to the installation mode of GIS long bus structure equipment.
And step eight, solving and calculating to obtain the temperature difference deformation value of the GIS long bus structure at different temperatures.
Step nine, extracting the deformation value and the corresponding temperature of each part in finite element calculation, considering the ratio of the deformation value to the temperature variable as the comprehensive thermal expansion coefficient, and taking the ratio of the comprehensive thermal expansion coefficient to the theoretical thermal expansion coefficient as the weight coefficientγ。
Step ten, comparing the finite element calculation result with the measurement result of the actual total station, and calculating the error range of the finite element model; and carrying out error analysis on the deformation value of each characteristic unit in the finite element result under the same condition and the deformation value measured by the total station, wherein the maximum error range is used as the calculation error range of the finite element model.
And step eleven, converting the established finite element model into a simplified model without pretightening force and cylinder blind plate force, correcting a thermal expansion calculation formula to calculate a comprehensive thermal expansion coefficient by combining with the field measurement temperature, and calculating a deformation displacement value of the GIS long bus structure under the researched temperature condition.
Preferably, the position change measurement of each geometric characteristic unit in the GIS long bus structure is realized by matching a total station and a prism.
Preferably, the linear expansion coefficient obtained by fitting each geometric characteristic unit in the GIS long bus structure is a comprehensive linear expansion coefficient under the combined action of factors such as a cylinder blind plate force, a bolt pretightening force and a concrete expansion deformation force.
Preferably, the calculation process of the temperature difference deformation of the GIS long bus structure is realized by a finite element method.
Preferably, in the finite element calculation process of the GIS long bus structure, heat transfer calculation is not needed, and interpolation calculation is directly performed according to the measured temperature of each geometric characteristic of the GIS long bus structure.
Preferably, in the temperature difference deformation calculation of the GIS long bus structure, the finite element calculation result is used for solvingWeight coefficient in formula for correcting thermal expansion coefficientγ。
Preferably, in the calculation of the temperature difference deformation of the GIS long bus structure, the specific stress state of a site is measured, the comprehensive thermal expansion coefficient is calculated by using a formula for correcting the thermal expansion coefficient, and the measurement of a total station is replaced by a method for calculating the temperature difference deformation by combining a finite element.
Preferably, in the calculation of the temperature difference deformation of the GIS long bus structure, the measurement of a total station is replaced by a method of calculating the temperature difference deformation by combining temperature measurement and finite elements.
Example 1:
taking the temperature difference deformation calculation of the GIS long bus structure of the Qinghai 750KV transformer substation as an example, the schematic diagrams of the positions of the GIS long bus structure, the total station and the prism are shown in fig. 1, the temperature changes of the cylinder body and the flange plate of the GIS long bus structure are shown in fig. 2, the temperature difference deformation values of all characteristic geometric units of the GIS long bus structure are shown in fig. 3, the geometric model of the GIS long bus structure is shown in fig. 4, the detailed diagram of all characteristic geometric units of the GIS long bus structure is shown in fig. 5, the deformation displacement distribution cloud diagram is shown in fig. 6, and the partial enlarged view of the deformation displacement distribution cloud diagram is shown in fig. 7.
First, a prism and a total station are arranged on a GIS long busbar structure according to the field situation, as shown in fig. 1. The thick vertical lines at both ends in fig. 1 represent the isolating disconnecting switch, which is a fixed end; the rectangular frame is a cylinder; the wave line is a compensation unit, the trapezoid frame and the triangular frame are fixed supports, and the triangular position is a total station placing position; the numbers represent the numbers of the prisms on the cylinder body and the flange plate, each number represents that one prism is placed at the position, and i-j in the numbers represent that three prisms distributed at 45-degree included angles are set at the position of the compensation unit so as to obtain an accurate value of the position displacement change of the compensation unit. According to the measurement results (shown in fig. 2 and fig. 3 respectively), the comprehensive expansion coefficient of each characteristic geometric unit is calculated by using a thermal expansion coefficient calculation formula, a GIS long bus structure geometric model with a ratio of 1.
Endowing material attributes with corresponding geometric models and carrying out grid division, wherein the division mode is hexahedron free division; subsequently, the contact of the individual features with one another is set. Setting boundary conditions in finite element calculation software, interpolating a measured temperature result into a finite element model, carrying out constraint on other boundary conditions according to the running state of the GIS long bus structure, and obtaining a deformation displacement distribution cloud picture and a local enlarged picture (shown in figures 6 and 7 respectively) after solving and operation; and then, comparing the finite element result with the measurement result to give an error range. The deformation value and the corresponding temperature of each part can be extracted in finite element calculation, the ratio of the deformation value to the temperature variable is considered as a comprehensive thermal expansion coefficient, and the ratio of the comprehensive thermal expansion coefficient to the theoretical thermal expansion coefficient is a weight coefficientγ(ii) a . And measuring the temperatures of the cylinder and the flange plate of the GIS long bus structure again, converting the established finite element model into a simplified model without pretightening force and cylinder blind plate force, correcting a thermal expansion calculation formula to calculate a comprehensive thermal expansion coefficient by combining with the field measurement temperature, and calculating the deformation displacement value of the GIS long bus structure under the researched temperature condition.
Claims (8)
1. A method for calculating temperature difference deformation of a GIS long bus structure in a high-altitude area is characterized by comprising the following steps: the method comprises the following steps:
firstly, measuring the temperature on the surface of a GIS long bus structure cylinder and the surface of a flange plate, respectively measuring the temperature when the weather temperature rises and falls within 24 hours, and measuring for at least 5 times;
secondly, arranging a prism device at a flange plate of the GIS long bus structure, measuring the position coordinates of the prism by using a total station, and simultaneously measuring the temperature by using the total station so as to ensure that the accurate coordinates of the corresponding prism device at the temperature of each time point are obtained;
selecting temperature data of any time point and prism coordinates corresponding to the temperature data as reference points, and calculating difference values of the temperatures of other time points and the prism coordinates corresponding to the temperature data and the prism coordinates and the reference points;
step four, according to the corrected thermal expansion coefficient calculation formula:
in the formula, L-datum position
dl-amount of change relative to the location of the reference point
dT-the amount of relative change from the reference point temperature
Delta T-bulk temperature variation
Gamma-weight coefficient
E-modulus of elasticity
Fitting comprehensive axial linear expansion coefficients of the cylinder, the flange plate and the compensation unit in the GIS long bus structure under the action of the cylinder blind plate force, the bolt pretightening force and the concrete thermal deformation expansion force;
step five, establishing a GIS long bus structure geometric model of 1 according to the measuring result of the selected datum point total station, and importing finite element numerical simulation software for grid division;
setting a linear expansion coefficient, an elastic modulus and a Poisson ratio corresponding to a geometric model in a GIS long bus structure;
step seven, interpolating other temperature measurement results into a GIS long bus structure finite element model to serve as a temperature boundary condition, and reasonably setting other boundary conditions according to the installation mode of GIS long bus structure equipment;
step eight, solving and calculating to obtain temperature difference deformation values of the GIS long bus structure at different temperatures;
step nine, calculating a weight coefficient gamma in each stress state according to a finite element calculation result;
step ten, comparing the finite element calculation result with the measurement result of the actual total station, and calculating the error range of the finite element model;
and step eleven, utilizing the established finite element model, combining with the field temperature measurement, correcting a thermal expansion calculation formula to calculate a comprehensive thermal expansion coefficient, and predicting and calculating the temperature difference deformation of the GIS long bus structure.
2. The method for calculating the temperature difference deformation of the high-altitude area GIS long bus structure according to claim 1, characterized by comprising the following steps: the position change measurement of each geometric characteristic unit in the GIS long bus structure is realized by the cooperation of a total station and a prism.
3. The method for calculating the temperature difference deformation of the high-altitude area GIS long bus structure according to claim 1, characterized by comprising the following steps: the linear expansion coefficient obtained by fitting each geometric characteristic unit in the GIS long bus structure is a comprehensive linear expansion coefficient under the combined action of the cylinder blind plate force, the bolt pretightening force and the concrete expansion deformation force.
4. The method for calculating the temperature difference deformation of the high-altitude area GIS long bus structure according to claim 1, characterized by comprising the following steps: the calculation process of the temperature difference deformation of the GIS long bus structure is realized by a finite element method.
5. The method for calculating the temperature difference deformation of the high-altitude area GIS long busbar structure according to claim 1, wherein the method comprises the following steps: in the finite element calculation process of the GIS long bus structure, heat transfer calculation is not needed, and interpolation calculation is directly carried out according to the measured temperature of each geometric characteristic of the GIS long bus structure.
6. The method for calculating the temperature difference deformation of the high-altitude area GIS long busbar structure according to claim 1, wherein the method comprises the following steps: in the temperature difference deformation calculation of the GIS long bus structure, a weight coefficient gamma in a formula for correcting the thermal expansion coefficient is obtained by using a finite element calculation result.
7. The method for calculating the temperature difference deformation of the high-altitude area GIS long busbar structure according to claim 1, wherein the method comprises the following steps: in the temperature difference deformation calculation of the GIS long bus structure, the specific stress state of a site is measured, the comprehensive thermal expansion coefficient is calculated by using a correction thermal expansion coefficient formula, and the measurement of a total station is replaced by a method for calculating the temperature difference deformation by combining a finite element.
8. The method for calculating the temperature difference deformation of the high-altitude area GIS long busbar structure according to claim 1, wherein the method comprises the following steps: in the temperature difference deformation calculation of the GIS long bus structure, a method of calculating temperature difference deformation by combining temperature measurement and finite elements replaces measurement of a total station.
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| CN110276092B (en) * | 2019-04-28 | 2022-12-23 | 国家电网有限公司 | Outdoor GIS equipment temperature displacement live-action measurement and evaluation method |
| CN110425984A (en) * | 2019-09-06 | 2019-11-08 | 国网青海省电力公司电力科学研究院 | A kind of non-contact displacement detection device and its method based on image recognition technology |
| CN112097725B (en) * | 2020-08-01 | 2022-05-10 | 国网辽宁省电力有限公司电力科学研究院 | Temperature compensation type expansion joint checking and adjusting method for outdoor GIS bus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07209340A (en) * | 1994-01-11 | 1995-08-11 | Toshiba Corp | Optical current measurement device |
| CN103559358A (en) * | 2013-11-13 | 2014-02-05 | 国家电网公司 | Method for analogue simulation of ultrahigh-voltage GIS (gas insulated switchgear) oscillation type lightning surge voltage withstand test |
| CN204407813U (en) * | 2015-01-08 | 2015-06-17 | 国家电网公司 | A kind of GIS device bus bar canister end and long draw bracing or strutting arrangement |
| CN104779568A (en) * | 2014-12-11 | 2015-07-15 | 平高集团有限公司 | Online monitoring system for GIS busbar barrel |
| CN107514989A (en) * | 2017-08-23 | 2017-12-26 | 国网新疆电力公司检修公司 | The deformation of GIS bus telescopings section, sliding extension and subsidence monitoring of foundation system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2405549A1 (en) * | 2010-07-09 | 2012-01-11 | ABB Technology AG | Gas-insulated switch assembly |
| CN105183988B (en) * | 2015-09-07 | 2018-05-18 | 电子科技大学 | Temperature and ess-strain finite element method (fem) analysis method after a kind of earth stud is powered |
| JP6875143B2 (en) * | 2017-02-10 | 2021-05-19 | 矢崎総業株式会社 | Wire harness thermal analysis methods, thermal analyzers and programs |
| CN108052697B (en) * | 2017-11-18 | 2020-07-10 | 西安交通大学 | Gallery pipe GI L three-dimensional temperature field and expansion deformation calculation method based on workbench |
-
2018
- 2018-12-04 CN CN201811472262.2A patent/CN109376487B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07209340A (en) * | 1994-01-11 | 1995-08-11 | Toshiba Corp | Optical current measurement device |
| CN103559358A (en) * | 2013-11-13 | 2014-02-05 | 国家电网公司 | Method for analogue simulation of ultrahigh-voltage GIS (gas insulated switchgear) oscillation type lightning surge voltage withstand test |
| CN104779568A (en) * | 2014-12-11 | 2015-07-15 | 平高集团有限公司 | Online monitoring system for GIS busbar barrel |
| CN204407813U (en) * | 2015-01-08 | 2015-06-17 | 国家电网公司 | A kind of GIS device bus bar canister end and long draw bracing or strutting arrangement |
| CN107514989A (en) * | 2017-08-23 | 2017-12-26 | 国网新疆电力公司检修公司 | The deformation of GIS bus telescopings section, sliding extension and subsidence monitoring of foundation system |
Non-Patent Citations (4)
| Title |
|---|
| 750 kV GIS设备长母线结构滑动支撑失效原因分析;张烁等;《青海电力》;20170930(第03期);59-62 * |
| GIS长母线位移监测系统工程应用实践;蒋晓旭;《高压电器》;20180916(第09期);248-253 * |
| 基于有限元分析的GIS母线筒温度场分布研究;徐敏等;《华东电力》;20130924(第09期);1920-1925 * |
| 高海拔大温差地区GIS设备不同类型膨胀节失效分析;何喜梅等;《青海电力》;20171231(第04期);11-15 * |
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