CN106650011A - System for predicting development trend of ice disaster on power transmission line - Google Patents
System for predicting development trend of ice disaster on power transmission line Download PDFInfo
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- CN106650011A CN106650011A CN201611042439.6A CN201611042439A CN106650011A CN 106650011 A CN106650011 A CN 106650011A CN 201611042439 A CN201611042439 A CN 201611042439A CN 106650011 A CN106650011 A CN 106650011A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 62
- 238000011161 development Methods 0.000 title claims abstract description 16
- 238000004088 simulation Methods 0.000 claims abstract description 54
- 238000004364 calculation method Methods 0.000 claims abstract description 42
- 238000003745 diagnosis Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims description 22
- 238000007405 data analysis Methods 0.000 claims description 12
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- 238000000034 method Methods 0.000 abstract description 11
- 239000000498 cooling water Substances 0.000 abstract 1
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- 206010033799 Paralysis Diseases 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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Abstract
The embodiment of the invention discloses a system for predicting development trend of ice disaster on power transmission line. The system comprises a simulation system of simulation calculation of ice increase on wires and a database of icing characteristics on power transmission line, the simulation system of simulation calculation of ice increase on wires comprises a parameter recording module, a numerical calculation module, a data classification module, a data output module, and a graphical display module in sequence electrically connected. The system for predicting the development trend of ice disaster on power transmission line utilizes basic geographical information data, historical and meteorological data of power transmission corridor, on the basis of building a numerical simulation model for the process of icing on wires, calculates and analyzes the degree of influence of temperature, wind speed and the diameter of water drop and the like on the strength of ice cover and the rate of local collisions in icing process when over cooling water droplets collide the surface of wires, further completes the prediction of disaster development trend of icing on wires, and derives diagnosis advice and provides reference bases for detecting icing on power transmission line.
Description
Technical Field
The invention relates to the technical field of power transmission line icing disaster development trend prediction, in particular to a power transmission line icing disaster development trend prediction system.
Background
The ice coating of the overhead transmission line causes damages such as line overload and conductor galloping and the like if the ice coating is light, and causes disconnection and collapse if the ice coating is heavy, so that the power grid is paralyzed. Therefore, the reliability of the power transmission network is seriously influenced by the ice coating of the overhead power transmission line, and great threat is brought to the safe and stable operation of the power system. Because the icing of the power transmission line is mainly influenced by meteorological factors, the research on the icing rule of the power transmission line and the icing prediction technology of the power transmission line under the atmospheric background from the aspect of the meteorological factors has very important significance.
The general idea of the icing growth mechanism research is based on meteorological data, a theoretical model is established according to the thermodynamic process of icing, and the ice load growth trend of a line or an artificial structure can be predicted according to the theoretical model. Research efforts in this area have developed over the years to develop a number of formulas and models for ice coating calculations for lines based on meteorological data. However, all these proposed or in use models or equations do not sufficiently demonstrate the completeness of the model because they are expected to yield widely differing predictions when predicting the weight of ice produced under the same meteorological conditions.
Due to the large differences between model predictions and actual measurements, most models have been continuously studied and refined until now. A wire icing growth simulation computational simulation system is clearly necessary because there is no conventional and standard wire icing observation. In actual conditions, the working condition of wire icing is very complex, so the water drop impact characteristic also becomes very complex, the total amount of data acquired and simulated is huge, and the data sorting and filing work is extremely complicated.
Disclosure of Invention
The embodiment of the invention provides a power transmission line icing disaster development trend prediction system to solve the problems.
In order to solve the technical problem, the embodiment of the invention discloses the following technical scheme:
a power transmission line icing disaster development trend prediction system comprises a wire icing growth simulation calculation and simulation system and a power transmission line icing characteristic database, wherein the wire icing growth simulation calculation and simulation system comprises a parameter input module, a numerical calculation module, a data classification module, a data output module and a graphic display module which are sequentially and electrically connected; wherein,
the parameter input module is used for receiving simulation parameters input by a user, wherein the simulation parameters comprise start-stop time, wire types, wire diameters, wind speed, wind direction, air temperature, air density and air pressure;
the numerical calculation module is used for respectively carrying out air flow field calculation, water drop collision track calculation, icing growth amount calculation and icing structure circulating calculation according to the simulation parameters to obtain icing trend data;
the data classification module is used for adding classification information to the icing trend data to obtain classified icing trend data, wherein the classification information comprises basic information, equipment attribute information and simulation parameters;
the data output module is used for importing the classified icing trend data and the simulated graph into the power transmission line icing characteristic database;
and the graph display module is used for reading the classified icing trend data and the simulated graphs of the power transmission line in the icing characteristic database and displaying the development trend of the simulated icing disaster.
Preferably, the power transmission line icing characteristic database further comprises a data analysis module, and the data analysis module is used for automatically calling icing trend data and analyzing the icing trend data to obtain a diagnosis conclusion and output a diagnosis result.
Preferably, the power transmission line icing characteristic database further comprises a condition query module, wherein the condition query module is used for setting query conditions, and after the query conditions are perfected, querying data in the power transmission line icing characteristic database and giving query results.
Preferably, the query condition includes a date, a place, a parameter, and a data name.
Preferably, the power transmission line icing characteristic database further comprises a maintenance module, and the maintenance module is used for correcting, deleting or adding data in the power transmission line icing characteristic database.
Preferably, the power transmission line icing characteristic database further comprises an adding module, and the adding module is used for calling the wire icing growth simulation calculation simulation system.
Preferably, the power transmission line icing characteristic database further comprises a copying module, and the copying module is used for copying data in the power transmission line icing characteristic database.
Preferably, the power transmission line icing characteristic database further comprises a secrecy module, and the secrecy module is used for setting the use permission of a user on the data analysis module, the condition query module, the maintenance module, the adding module and the copying module.
Preferably, the security module comprises two authentication modes of fingerprint authentication and password authentication, the user is prohibited from using the screen capturing function, and the external data interface is closed.
Preferably, the basic information includes: simulation time, simulation location and tester; the equipment attribute information includes manufacturer, equipment model, commissioning time, overhaul records and voltage class.
According to the technical scheme, the power transmission line icing disaster development trend prediction system provided by the embodiment of the invention utilizes the power transmission line corridor basic geographic information data, history and meteorological data, and on the basis of the establishment of the numerical simulation model of the conductor icing process, the influence degree of air temperature, wind speed, water droplet diameter and the like on icing strength and local collision rate when supercooling water droplets collide with the surface of the conductor in the icing process is calculated and analyzed, so that the prediction disaster development trend of the conductor icing is completed, a diagnosis suggestion is obtained, and a reference basis is provided for power transmission line icing detection.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wire icing growth simulation calculation simulation system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power transmission line icing characteristic database according to an embodiment of the present invention;
the symbols in the figures are represented as: 1-parameter input module, 2-numerical calculation module, 3-data classification module, 4-data output module, 5-graphic display module, 6-security module, 7-data analysis module, 8-condition query module, 9-maintenance module, 10-addition module and 11-copying module.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a power transmission line icing disaster development trend prediction system which comprises a wire icing growth simulation calculation and simulation system and a power transmission line icing characteristic database.
Fig. 1 is a schematic structural diagram of a wire icing growth simulation calculation and simulation system according to an embodiment of the present invention, and as shown in fig. 1, the wire icing growth simulation calculation and simulation system includes a parameter entry module 1, a numerical calculation module 2, a data classification module 3, a data output module 4, and a graphic display module 5.
After the wire icing growth simulation calculation and simulation system is started, the wire icing growth simulation calculation and simulation system firstly enters a parameter input module 1, the parameter input module 1 provides a setting window of data such as wire diameter, wind speed, wind direction, air temperature, air density and air pressure, and the set parameter data are stored and then transmitted to a numerical value calculation module 2.
After the numerical value calculation module 2 receives the set parameter data, air flow field calculation, water drop collision trajectory calculation, icing growth amount calculation and icing structure construction cycle calculation are completed on the basis of structured grid division, and the calculated data result is transmitted to the data classification module 3.
The data classification module 3 adds basic information, equipment attributes, simulation parameters and data names to the calculated icing trend data in a remark file of the data in sequence; the basic information comprises simulation time, simulation places and testers; the equipment attributes comprise manufacturers, equipment models, commissioning time, maintenance records and voltage grades; and the simulation parameters comprise start-stop time, wire type, wire diameter, wind speed, wind direction, air temperature, air density, air pressure and other data adopted when the icing thickness of the power transmission line is increased, and the classified data are transmitted to the data output module 4.
And the data output module 4 is used for importing the finally obtained data and the simulation graph into the power transmission line icing characteristic database.
And the graphic display module 5 is used for reading the data of the power transmission line icing characteristic database and displaying the development trend of the simulated icing disaster.
Fig. 2 is a schematic structural diagram of an icing characteristic database of a power transmission line according to an embodiment of the present invention, and as shown in fig. 2, the icing characteristic database of the power transmission line includes a privacy module 6, a data analysis module 7, a condition query module 8, a maintenance module 9, an addition module 10, and a copy module 11.
After the power transmission line icing characteristic database is started, authority authentication is needed to be carried out firstly, and the function is executed by the security module 6. The security module is responsible for authenticating and managing user authority, the user authority is set to be three levels, the first level is a field user, the user at the first level can be verified by adopting a password or a fingerprint, and the data analysis module 7 and the condition query module 8 in the power transmission line icing characteristic database can be used when the verification is passed; the second level is technical personnel, the users at the level can adopt passwords or fingerprints for verification, and the verification is passed, so that the data analysis module 7 and the condition query module 8 in the power transmission line icing characteristic database can be used, and the maintenance module 9 and the addition module 10 can also be used; and the third grade is the power transmission line icing characteristic database owner, the grade user is the highest authority user and is required to be verified only by fingerprints, and after the verification is passed, the power transmission line icing characteristic database opens all modules for the power transmission line icing characteristic database and can modify the user authority in the security module.
And the data analysis module 7 automatically calls and analyzes the simulated icing data after entering the module to obtain a diagnosis conclusion, outputs a diagnosis result, and automatically generates an unchangeable and deletable system log after the diagnosis result is exported, wherein the log comprises information such as an analysis result, analysis time, a user account and the like.
And the condition query module 8 is used for enabling a user to select one of four types of query conditions including date, place, parameter and data name, automatically querying data in the power transmission line icing characteristic database and displaying a query result after the selected query type is completed, and automatically generating an unchangeable and deletable system log after the query result is exported, wherein the log comprises information such as the query conditions, the query result, the query time and a user account.
And the maintenance module 9 only allows users of a second level or above to enter, needs secondary authentication of the security module, and opens the library file and the data resource folder in the library after passing the authentication. The user can modify the basic setting of the ice coating characteristic database of the power transmission line through the maintenance module, modify and add the user permission except the person with the highest permission level in the security module, and further modify and delete the ice coating trend data and the remark file thereof in the database. All maintenance results require the highest-authority person to perform approval calculation within 48 hours for successful maintenance due to confidentiality requirements, otherwise, the maintenance fails, and the data in the database is recovered to a state before the maintenance; after the maintenance is successful, the module automatically generates a system log which can not be changed and deleted, wherein the log comprises information such as maintenance time, maintenance objects, specific operation steps of maintenance, execution users, maintenance success time, confirmation users and the like.
The adding module 10 only allows users of a second grade and above to enter, and needs secondary authentication of the security module, and after the module passes the secondary authentication, the module automatically jumps to a wire icing growth simulation calculation simulation system starting interface to perform user wire icing growth simulation calculation and store the user wire icing growth simulation calculation in a storage; all new warehousing data and remark files thereof need the highest authority to perform approval calculation within 48 hours for successful addition due to the confidentiality requirement, otherwise, the addition fails, and the data in the warehouse is restored to the state before the addition; after the addition is successful, the module automatically generates a system log which can not be changed and deleted, wherein the log comprises information such as addition time, addition objects and the number of the addition objects, execution users, addition success time, confirmation users and the like.
The copying module 11 only allows the user with the highest authority level to enter, and needs the secondary authentication of the security module, the authentication mode must be fingerprint, after the fingerprint passes, the user can select or select more files to be copied in resource types such as library files, library parameters, library simulated icing data, library data remark files, system logs and the like, and related files related to the types selected by the user are packaged and stored to a user-specified position; after the packed file is stored, the module automatically calls a security module and requires a user to set a new user authority for the packed file; after setting, the module automatically generates a system log which is not changeable and deleted, wherein the log comprises information such as copying time, copying objects, execution users and the like.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Although the terms of the wire icing growth simulation calculation simulation system, the power transmission line icing characteristic database, the parameter entry module 1, the numerical calculation module 2, the data classification module 3, the data output module 4, the graphic display module 5, the privacy module 6, the data analysis module 7, the condition query module 8, the maintenance module 9, the addition module 10, the copy module 11, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A power transmission line icing disaster development trend prediction system is characterized by comprising a wire icing growth simulation calculation and simulation system and a power transmission line icing characteristic database, wherein the wire icing growth simulation calculation and simulation system comprises a parameter input module, a numerical calculation module, a data classification module, a data output module and a graphic display module which are sequentially and electrically connected; wherein,
the parameter input module is used for receiving simulation parameters input by a user, wherein the simulation parameters comprise start-stop time, wire types, wire diameters, wind speed, wind direction, air temperature, air density and air pressure;
the numerical calculation module is used for respectively carrying out air flow field calculation, water drop collision track calculation, icing growth amount calculation and icing structure circulating calculation according to the simulation parameters to obtain icing trend data;
the data classification module is used for adding classification information to the icing trend data to obtain classified icing trend data, wherein the classification information comprises basic information, equipment attribute information and simulation parameters;
the data output module is used for importing the classified icing trend data and the simulated graph into the power transmission line icing characteristic database;
and the graph display module is used for reading the classified icing trend data and the simulated graphs of the power transmission line in the icing characteristic database and displaying the development trend of the simulated icing disaster.
2. The system of claim 1, wherein the power transmission line icing characteristic database further comprises a data analysis module, and the data analysis module is configured to automatically call icing trend data and analyze the icing trend data to obtain a diagnosis conclusion and output a diagnosis result.
3. The system of claim 2, wherein the power transmission line icing characteristic database further comprises a condition query module, and the condition query module is configured to set a query condition, and after the query condition is completed, query data in the power transmission line icing characteristic database and provide a query result.
4. The system of claim 3, wherein the query condition comprises a date, a location, a parameter, a data name.
5. The system of claim 4, wherein the power transmission line icing signature database further comprises a maintenance module, and the maintenance module is configured to modify, delete, or add data in the power transmission line icing signature database.
6. The system of claim 5, wherein the power transmission line icing characteristic database further comprises an adding module, and the adding module is configured to invoke the wire icing growth simulation computation simulation system.
7. The system of claim 6, wherein the power transmission line icing signature database further comprises a replication module configured to replicate data in the power transmission line icing signature database.
8. The system of claim 7, wherein the power transmission line icing characteristic database further comprises a privacy module, and the privacy module is configured to set the usage right of the data analysis module, the condition query module, the maintenance module, the addition module and the copy module for a user.
9. The system of claim 8, wherein the security module comprises two authentication modes of fingerprint authentication and password authentication, and the user is prohibited from using the screen capture function and the external data interface is closed.
10. The system of claim 1, wherein the basic information comprises: simulation time, simulation location and tester; the equipment attribute information includes manufacturer, equipment model, commissioning time, overhaul records and voltage class.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611042439.6A CN106650011A (en) | 2016-11-21 | 2016-11-21 | System for predicting development trend of ice disaster on power transmission line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611042439.6A CN106650011A (en) | 2016-11-21 | 2016-11-21 | System for predicting development trend of ice disaster on power transmission line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107436972A (en) * | 2017-07-07 | 2017-12-05 | 国网湖南省电力公司 | Powerline ice-covering speedup variation characteristic computational methods and system under special climate |
| CN111709184A (en) * | 2020-06-12 | 2020-09-25 | 中国民航大学 | Accumulated ice combined decision-making method based on pavement temperature prediction and simulation |
| CN112464536A (en) * | 2020-12-09 | 2021-03-09 | 国网湖南省电力有限公司 | Method and device for predicting icing fault of power transmission line, computer equipment and medium |
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| CN112464536A (en) * | 2020-12-09 | 2021-03-09 | 国网湖南省电力有限公司 | Method and device for predicting icing fault of power transmission line, computer equipment and medium |
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