CN112365057A - Regional power transmission line galloping event model construction method and galloping event prediction method - Google Patents
Regional power transmission line galloping event model construction method and galloping event prediction method Download PDFInfo
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Abstract
The application provides a regional power transmission line galloping event model construction method and a galloping event prediction method, wherein the galloping event prediction method comprises the following steps: acquiring ground cold high pressure information, and the temperature and air pressure of an area to be researched; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position; calculating a pressure difference between the cold high pressure central pressure and the pressure of the area to be studied, and calculating a temperature difference between the cold high pressure area temperature and the temperature of the area to be studied, in a case where the temperature of the area to be studied is above a predetermined temperature; and inputting the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position into the galloping event prediction model to predict whether a galloping event occurs. Because the cold high-pressure south ground is the root cause of regional strong wind cooling and icing, the galloping event prediction model constructed by the application can accurately predict the occurrence of regional galloping events.
Description
Technical Field
The application relates to the technical field of power engineering, in particular to a regional power transmission line galloping event model construction method and a prediction method.
Background
The waving of the overhead transmission line refers to the phenomenon of low-frequency and large-amplitude self-excited vibration generated by the overhead transmission line under the combined action of ice coating and strong wind. The galloping of the overhead transmission line can cause the reduction of the space between different wires and even the mutual collision, and further can cause the flashover trip of the line; the internal tension changes violently in the process of galloping the overhead transmission line, which may cause damage to the line, the insulator and even the pole tower.
The existing theoretical and experimental research results suggest that the longer the duration of the waving time is, the more likely the waving process is to develop, and the greater the probability of harm to lines and power grids. It is determined that the power transmission line galloping event is closely related to the meteorological conditions near the power transmission line, the transient characteristics of the meteorological conditions in the local area are obvious, the galloping condition of a specific power transmission line in the local area can be measured, but the development condition of the galloping time of the regional power transmission line cannot be measured.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the application provides a regional power line galloping event prediction model construction method and a regional power line galloping event prediction method.
On one hand, the application provides a regional power line galloping event prediction model construction method, which is characterized by comprising the following steps:
acquiring historical galloping event information of an area to be researched, ground cold and high pressure information in the historical galloping event process, and the temperature and air pressure of the area to be researched; the historical dance event information includes a start time and an end time; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
calculating the air pressure difference between the cold high-pressure central air pressure and the air pressure of the area to be researched, and calculating the temperature difference between the cold high-pressure area temperature and the temperature of the area to be researched;
and establishing a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
Optionally, the historical galloping event information further comprises galloping event hazard results; the hazard result comprises at least one of an impact range, a dancing amplitude, and whether to trip a wire break;
establishing a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information, wherein the galloping event prediction model comprises the following steps: and establishing a galloping event damage result model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
In another aspect, the present application provides a method for predicting a regional power line galloping event, including:
acquiring ground cold high pressure information, and the temperature and air pressure of an area to be researched; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
calculating a pressure difference between the cold high pressure central pressure and the pressure of the area to be studied in a case where the temperature of the area to be studied is above a predetermined temperature, and calculating a temperature difference between the cold high pressure area temperature and the temperature of the area to be studied;
and inputting the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front position into a galloping event prediction model to predict whether a galloping event occurs.
Optionally, in the event of a dance event, the method further includes:
predicting the development stage of the galloping event according to the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position, and determining the duration time and the end time of the galloping event according to the development stage of the galloping event.
In another aspect, the present application provides a device for constructing a regional power line galloping event model, including:
the device comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring historical galloping event information of an area to be researched, ground cold high-pressure information in the historical galloping event process, and the temperature and air pressure of the area to be researched; the historical dance event information includes a start time and an end time; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
the first calculation unit is used for calculating the air pressure difference between the cold high-pressure central air pressure and the air pressure of the area to be researched and calculating the temperature difference between the cold high-pressure area temperature and the temperature of the area to be researched;
and the model building unit is used for building a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
Optionally, the historical galloping event information further comprises galloping event hazard results; the hazard result comprises at least one of an impact range, a dancing amplitude, and whether to trip a wire break;
the model building unit is further used for building a galloping event damage result model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front edge position and the historical galloping event information.
In another aspect, the present application provides a device for predicting a regional power line galloping event, including:
the second acquisition unit is used for acquiring ground cold high-pressure information, and the temperature and the air pressure of the area to be researched; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
a second calculation unit for calculating a pressure difference between the cold high-pressure central air pressure and the area-to-be-studied air pressure and calculating a temperature difference between the cold high-pressure area temperature and the area-to-be-studied temperature, in a case where the area-to-be-studied temperature is above a predetermined temperature;
and the prediction unit is used for inputting the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position into a galloping event prediction model so as to predict whether a galloping event occurs.
Optionally, in case of a galloping event, the prediction unit is further adapted to,
predicting the development stage of the galloping event according to the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position, and determining the duration time and the end time of the galloping event according to the development stage of the galloping event.
According to the method and the device, the weather change characteristics of the area to be researched are determined according to the ground cold high-voltage information, and a galloping event prediction model is established by utilizing the weather change characteristics and the historical galloping event information, so that the method and the device can be used for predicting the galloping event of the future power transmission line. Because the cold high-pressure south ground is the root cause of regional strong wind cooling and icing, the galloping event prediction model constructed by the application can accurately predict the occurrence of regional galloping events.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a flowchart of a regional power line galloping event model construction method provided in an embodiment of the present application;
fig. 2 is a flowchart of a regional power line galloping event prediction method provided in an embodiment of the present application;
FIG. 3 is a graph of the ground cold high pressure distribution at 2 months and 13 days 2020 released by the central weather station at 08;
FIG. 4 is a graph showing the distribution of the ground cold and high pressure at 2 months and 14 days 08 in 2020 released by the central weather station
FIG. 5 is a graph of the ground cold high pressure distribution at 2 months, 15 days, and 20 days 2020 as issued by the central weather station;
fig. 6 is a schematic structural diagram of a regional power line galloping event prediction model building device provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a regional power line galloping event prediction device provided in an embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;
11-a first acquisition unit, 12-a first calculation unit, 13-a model construction unit, 21-a second acquisition unit, 22-a second calculation unit, 23-a prediction unit, 31-a processor, 32-a memory, 33-a communication interface, 34-a bus interface.
Detailed Description
In order that the above-mentioned objects, features and advantages of the present application may be more clearly understood, the solution of the present application will be further described below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein; it is to be understood that the embodiments described in this specification are only some embodiments of the present application and not all embodiments.
The existing research shows that ice coating and strong wind blowing are the prerequisites for causing the power transmission line galloping event. The ice coating and the strong wind of regional power transmission lines are mostly generated in the process of large-range south of ground cold high voltage (cold air); that is, the regional dance event occurs mostly during the winter season under the cold air in a wide south.
The intensity and the range of the ground cold high pressure can well represent the weather change characteristics in a certain area, so that the regional galloping event can be predicted based on the intensity and the range of the ground cold high pressure.
Fig. 1 is a flowchart of a regional power line galloping event model building method provided in an embodiment of the present application. As shown in FIG. 1, the method provided by the embodiment of the application comprises steps S101-S103.
S101: obtaining historical galloping event information of an area to be researched, ground cold and high pressure information in the historical galloping event process, and the temperature and air pressure of the area to be researched.
The historical galloping events are historically recorded galloping events occurring on the power lines in the area to be studied. The historical dance event information includes a start time and an end time of the dance event.
The ground cold high pressure information during the historical dance event is ground cold high pressure information between the start time and the end time. In the embodiment of the present application, the ground cold high pressure information includes a cold high pressure central air pressure, a cold high pressure area temperature, a cold high pressure range, and a cold high pressure front position.
The cold high-pressure central air pressure represents the strength of cold air, and the larger the central air pressure is, the stronger the cold air is; cold high pressure center air pressure and other areas of air pressure differential result in windy weather. The temperature difference between the cold high pressure area and the other areas results in cooling precipitation weather. The cold high pressure range characterizes the coverage of cold air. The cold high pressure front position represents the location of the area where cooling precipitation weather may occur.
S102: and calculating the air pressure difference between the cold high-pressure central air pressure and the air pressure of the area to be researched, and calculating the temperature difference between the cold high-pressure area temperature and the temperature of the area to be researched.
According to experience, the ground cold high pressure has the characteristics of high central air pressure and low temperature. The larger the air pressure difference between the ground cold high pressure and the non-passing area of the ground is, the larger the formed wind power is; the greater the temperature difference between the ground cold high pressure and the border area thereof, the greater the possibility of forming precipitation into ice, so the pressure difference between the cold high pressure central air pressure and the air pressure of the area to be researched and the temperature difference between the cold high pressure area temperature and the area to be researched can be used as the basis for constructing the galloping event prediction model.
S103: and establishing a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
In the embodiment of the application, a galloping event prediction model is established according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information, the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front position which form the galloping event are determined according to the development stage (namely time) of the galloping event, then the weather condition information forming the galloping event is determined, and the relation between the weather condition information and the galloping event is established to form the galloping event prediction model.
In practical applications, the galloping event prediction model may be a model mainly described by qualitative data, or may be a model described by quantitative and partial quantitative data. Considering that the weather conditions causing the galloping event have certain randomness and the weather conditions causing the galloping event are numerous, the qualitative description method is preferably adopted to construct the galloping event prediction model in the embodiment of the application.
In practical application, the determined galloping event prediction model is different according to different regions to be researched. In the specific implementation of the embodiment of the application, the weather conditions of the galloping events occurring in the north and south of China are different, and different types of galloping event prediction models are correspondingly constructed.
The prediction model of the galloping event in the northern area is as follows: in the process of cold high-pressure south-below the ground, the period from the front position of the cold high-pressure front to the area to be researched to make the air pressure difference and the temperature difference larger to the time when the cold high-pressure center reaches the area to be researched is the transit stage of cold air, and the stage of temperature reduction and precipitation and strong wind weather can occur, and the stage of occurrence of a galloping event is the occurrence stage at this time; at this stage, the greater the pressure difference and temperature difference between the cold high-pressure central air pressure and the air pressure of the area to be researched, the greater the temperature reduction amplitude and the greater the wind speed are, and the greater the intensity and the hazard of the waving event are. After the ground cold high pressure passes through, the area to be researched is completely controlled by the ground cold high pressure, the air pressure difference and the temperature difference are small, so that the weather of the area to be researched turns fine, the wind speed is reduced, and the stage of stopping the galloping event is at this moment.
The galloping event prediction model in the south area is as follows: in the process of cold high-pressure south-below the ground, the period from the front position of the cold high-pressure front to the area to be researched to make the air pressure difference and the temperature difference larger to the time when the cold high-pressure center reaches the area to be researched is the transit stage of cold air, and the stage of temperature reduction and precipitation and strong wind weather can occur, and the stage of occurrence of a galloping event is the occurrence stage at this time; at this stage, the greater the difference between the air pressure difference between the central air pressure of the cold high pressure and the air pressure of the area to be researched, the greater the temperature reduction amplitude and the greater the wind speed are, and the greater the intensity and the hazard of the waving event are. The waving event is stopped when the cold high pressure on the ground is reduced and the area to be studied is controlled again by warm air and the temperature rises.
Through the analysis, the local weather change characteristics of the area to be researched are determined and represented according to the ground cold high-voltage information when the area to be researched generates the regional power transmission line galloping event, and the galloping event prediction model is established by utilizing the local weather change characteristics and the historical galloping event information. The ground cold high-pressure south is the root cause of regional strong wind cooling and icing, and the characteristics of the temperature change of the region to be researched can be represented, so that the galloping event prediction model constructed in the embodiment of the application can accurately predict the occurrence of the regional galloping event.
In a specific application of the embodiment of the present application, the historical galloping event may further include a harmful result of the galloping event. The harmful results of the galloping event include at least one of the range of influence of the galloping event, the transmission line galloping amplitude, and whether a trip break occurred.
In addition, when the galloping event prediction model is established, a galloping event damage result model can be established according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front edge position and the historical galloping event information. Specifically, the air pressure difference and the temperature difference of various intensities, the cold high pressure range and the cold high pressure front edge position are established, the correlation is established with the corresponding waving event harm result, and the waving event harm result caused by the weather condition is determined.
In future application, a galloping event damage result model can be utilized, and based on ground cold high-voltage information and the temperature and air pressure of an area to be researched, the damage result which possibly occurs when the area to be researched has a galloping event is roughly predicted, so that an electric power department is informed to prepare for power transmission scheduling and power transmission line first-aid repair arrangement in advance.
Besides providing the construction method of the galloping event prediction model, the embodiment of the application also provides a regional power transmission line galloping event prediction method. Fig. 2 is a flowchart of a regional power line galloping event prediction method provided in an embodiment of the present application, and as shown in fig. 2, the galloping event prediction method includes steps S201 to S203.
S201: and acquiring ground cold high pressure information, and the temperature and the air pressure of the area to be researched.
In the embodiment of the application, the ground cold high pressure information, the temperature and the air pressure of the area to be researched can be obtained from a meteorological department. Wherein the ground cold high information may be obtained from the ground cold high pressure profile, as previously described, the ground cold high pressure information including the cold high pressure central air pressure, the cold high pressure zone temperature, the cold high pressure range, and the cold high pressure front position.
S202: in the case where the temperature of the area to be investigated is above a predetermined temperature, the air pressure difference between the cold high-pressure central air pressure and the air pressure of the area to be investigated is calculated, and the temperature difference between the cold high-pressure area temperature and the area to be investigated is calculated.
It has been determined that power line icing and high winds are the prerequisite for a galloping event. The premise of icing the transmission line is that precipitation occurs in the area to be researched; in the process of the cold high-pressure south on the ground, the premise that precipitation occurs in the area to be researched is that the air in the area to be researched has water amount capable of forming precipitation. When the temperature of the area to be researched is too low, the water content of the air is too low, and precipitation cannot be generated, so that the power transmission line galloping event cannot occur in the process of the cold high-voltage south-falling ground. It is of value to predict the galloping event only if the temperature of the area to be studied is above a predetermined temperature (for example, above-zero temperature 3-4 ℃) and the air humidity reaches a humidity at which precipitation is formed upon cooling, i.e. the air pressure difference and the temperature difference are calculated only if the temperature of the area to be studied is above the predetermined temperature.
S203: and inputting the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position into the galloping event prediction model to obtain whether a galloping event occurs.
As described above, the galloping event prediction model is a model of the relation between the occurrence of the galloping event and the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front position, and on the basis of the model determination and the weather condition determination, the model and the weather forecast information can be used for predicting whether the regional galloping event can occur.
It should be noted that predicting whether a galloping event has occurred is a probabilistic event. Under real conditions, a galloping event may or may not occur based on this weather condition.
In the embodiment of the application, under the condition that the regional galloping event occurs, the development stage of the galloping event can be predicted according to the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front position, and the duration time and the ending time of the galloping event can be determined according to the development stage of the galloping event.
Based on whether the galloping event occurs or not, and the duration time and the end time of the galloping event, the power department can predict the damage result of the galloping event, and make preparation work for power transmission scheduling and power transmission line first-aid repair arrangement in advance.
In order to more clearly explain the galloping event prediction model construction method and the regional power line galloping event prediction method provided by the embodiment of the application, a real case is used for explanation below.
Building prediction model for power transmission line galloping event in Bohai region of Bohai
In order to establish a prediction model of the galloping event in the Bohai sea area, power transmission line galloping event information of the area in about 20 years is collected, the event process occurs at the time of 2004-20-22 days, 2010-1-19-22 days, 2010-2-24-26 days, 2015-11-6-8 days and the like, and the event process comprises the start time, the end time, the influence range, the galloping amplitude data of an overhead power transmission line and line tripping records; and collecting ground cold high-pressure information in the process of the galloping event based on the starting time and the ending time of the galloping event, wherein the ground cold high-pressure information comprises cold high-pressure central air pressure, a cold high-pressure range and a cold high-pressure front edge position.
Subsequently, the temperature and air pressure differences over the duration of the galloping event are calculated using the method of step S102, and a galloping event prediction model is determined using step S103.
The Bohai sea area of the ring is located at the junction of northeast and northwest China, belongs to a typical northern area, and the galloping event model is a typical northern area galloping event model and is characterized in that: the time period from the front position of the cold high pressure on the ground to the position from the ground to the cold high pressure center to the position from the ground to the position from the ring and the Bohai is a waving generation stage; and (4) when the ground cold high pressure continues in south and south, and the Bohai area of the Bohai is completely controlled by the ground cold high pressure, the galloping stop stage is realized.
Prediction of power transmission line galloping event in Bohai region of Bohai
Fig. 3 is a graph of the ground cooling high pressure distribution at 2 months and 13 days of 2020 released by the central weather station. As shown in fig. 3, the ground cold high-pressure air pressure is 1050hPa at 2 months and 13 days 08, the air pressure in the Bohai and Bohai region is 1010hPa, the air pressure difference reaches 40hPa, and the air pressure difference can generate the gale weather condition required by waving; at the moment, the ground cold high-pressure temperature is-17.3 ℃, the temperature is 2-4 ℃ of that of the Bohai region, and the temperature difference is about 20 ℃; and the front edge position of the ground cold high pressure reaches the east edge of the inner Mongolia plateau, and the front edge position is about to enter the yellow Bohai sea area quickly; and determining that the transmission line galloping event in the yellow Bohai sea area is about to start in 13 days according to the galloping event prediction model.
Fig. 4 is a graph of the ground cooling high pressure distribution at 2 months and 14 days 08 in 2020 released by the central weather station. As shown in fig. 4, at this time, the ground cold high-pressure air pressure is 1080hPa, the air pressure in the bohai region is 1010hPa, and the air pressure difference reaches 70 hPa; at the moment, the ground cold high-pressure temperature is-27 ℃, the temperature of the ring and Bohai region is 8-10 ℃, the temperature difference is about 35-40 ℃, the front edge position of the ground cold high-pressure enters the ring and Bohai region, and the waving event starts. And from the huge air pressure difference and temperature difference, the regional waving event is very strong.
Fig. 5 is a graph of the ground cooling high pressure distribution at 2, 15, and 20 of 2020 released by the central weather station. As shown in fig. 5, at this time, the center of ground cold high-pressure split crosses the ring and boa region, the central air pressure is 1035hPa, which is almost different from the air pressure 1030hPa of the ring and boa region, the ring and boa region is completely controlled by cold air, and the waving event is basically finished at this time.
Through early prediction, when the starting event of the dance event in the Bohai and Bohai sea area is expected to be 08 days after 2 months, 15 days after 2 months and 20 days after the end event, the overall duration is expected to be 36 hours.
According to later-stage actual statistics, regional transmission line galloping does occur in the Bohai region in 2020 within 14-15 months, and galloping tripping of 9 500kV lines and 68 110-220kV lines occurs in the power grids of Liaoning, Jibei, Tianjin, Hebei and Shandong regions.
Besides the method, the embodiment of the application also provides a regional power line galloping event prediction model construction device.
Fig. 6 is a schematic structural diagram of a regional power line galloping event prediction model building device according to an embodiment of the present application. As shown in fig. 6, the model construction apparatus includes a first acquisition unit 11, a first calculation unit 12, and a model construction unit 13.
The first acquisition unit 11 is used for acquiring historical galloping event information of an area to be researched, ground cold high-pressure information in the historical galloping event process, and temperature and air pressure of the area to be researched; the historical dance event information includes a start time and an end time; the ground cold high pressure information includes cold high pressure central air pressure, cold high pressure zone temperature, cold high pressure range and cold high pressure front position.
The first calculation unit 12 is used to calculate the air pressure difference between the cold high pressure central air pressure and the air pressure of the area to be studied, and to calculate the temperature difference between the cold high pressure area temperature and the area to be studied temperature.
The model building unit 13 is used for building a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
Through the analysis, the local weather change characteristics of the area to be researched are determined and represented according to the ground cold high-voltage information when the area to be researched generates the regional power transmission line galloping event, and the galloping event prediction model is established by utilizing the local weather change characteristics and the historical galloping event information. The ground cold high-pressure south is the root cause of regional strong wind cooling and icing, and the characteristics of the temperature change of the region to be researched can be represented, so that the galloping event prediction model constructed in the embodiment of the application can accurately predict the occurrence of the regional galloping event.
In one particular application, the historical dance event information further includes dance event hazard results; the hazard result comprises at least one of an impact range, a dancing amplitude, and whether to trip a wire break; the model building unit is also used for building a galloping event damage result model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front edge position and the historical galloping event information.
The embodiment of the application also provides a device for predicting the regional power transmission line galloping event. Fig. 7 is a schematic structural diagram of a regional power line galloping event prediction device according to an embodiment of the present application. As shown in fig. 7, the dance event prediction apparatus includes a second acquisition unit 21, a second calculation unit 22, and a prediction unit 23.
The second acquiring unit 21 is used for acquiring ground cold high pressure information, and the temperature and air pressure of the area to be researched; the ground cold high pressure information includes cold high pressure central air pressure, cold high pressure zone temperature, cold high pressure range, and cold high pressure front position.
The second calculation unit 22 is used to calculate the air pressure difference between the cold high pressure central air pressure and the air pressure of the area to be studied, and to calculate the temperature difference between the cold high pressure area temperature and the area to be studied, in case the area temperature to be studied is above a predetermined temperature.
The prediction unit 23 is configured to input the air pressure difference, the temperature difference, the cold high pressure range, and the cold high pressure front position into the galloping event prediction model to predict whether a galloping event occurs.
In one specific application, the prediction unit is also used for predicting the development stage of the galloping event according to the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position in the case of the galloping event, and determining the duration and the end time of the galloping event according to the development stage of the galloping event.
The embodiment of the application also provides electronic equipment for realizing the method.
Fig. 8 is a schematic structural diagram of an electronic device provided in an embodiment of the present application. As shown in fig. 8, the electronic device comprises at least one processor 31, at least one memory 32 and at least one communication interface 33. The various components in the electronic device are coupled together by a bus system 34. The communication interface 33 is used for information transmission with an external device. Understandably, the bus system 34 is used to enable connective communication between these components. The bus system 34 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, the various buses are labeled as bus system 34 in fig. 8.
It will be appreciated that the memory 32 in this embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory.
In some embodiments, memory 32 stores elements, executable units or data structures, or a subset thereof, or an expanded set thereof: an operating system and an application program.
The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic tasks and processing hardware-based tasks. The application programs include various application programs, such as a media player (MediaPlayer), a Browser (Browser), and the like, for implementing various application tasks, and the method for implementing the waving event prediction model construction method or the regional power line waving event prediction method provided by the embodiment of the present application may be included in the application programs.
In the embodiment of the present application, the processor 31 calls a program or an instruction stored in the memory 32, specifically, may be a program or an instruction stored in an application program, and the processor 31 is used for each step of the galloping event prediction model building method or the regional power line galloping event prediction method provided in the embodiment of the present application.
The processor 31 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 31. The Processor 31 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The steps of the galloping event prediction model construction method or the regional power transmission line galloping event prediction method provided by the embodiment of the application can be directly implemented by a hardware decoding processor, or implemented by combining hardware and software units in the decoding processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in the memory 32, and the processor 31 reads the information in the memory 32 and performs the steps of the method in combination with the hardware thereof.
The embodiments of the present application further provide a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores a program or an instruction, and the program or the instruction causes a computer to execute the steps of the galloping event prediction model building method or the regional power transmission line galloping event prediction method provided in the embodiments of the present application, and in order to avoid repeated descriptions, details are not repeated here.
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 above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. 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 application. Thus, the present application 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 regional power transmission line galloping event prediction model construction method is characterized by comprising the following steps:
acquiring historical galloping event information of an area to be researched, ground cold and high pressure information in the historical galloping event process, and the temperature and air pressure of the area to be researched; the historical dance event information includes a start time and an end time; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
calculating the air pressure difference between the cold high-pressure central air pressure and the air pressure of the area to be researched, and calculating the temperature difference between the cold high-pressure area temperature and the temperature of the area to be researched;
and establishing a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
2. The model building method according to claim 1,
the historical galloping event information also comprises galloping event hazard results; the hazard result comprises at least one of an impact range, a dancing amplitude, and whether to trip a wire break;
establishing a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information, wherein the galloping event prediction model comprises the following steps: and establishing a galloping event damage result model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
3. A regional power line galloping event prediction method is characterized by comprising the following steps:
acquiring ground cold high pressure information, and the temperature and air pressure of an area to be researched; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
calculating a pressure difference between the cold high pressure central pressure and the pressure of the area to be studied in a case where the temperature of the area to be studied is above a predetermined temperature, and calculating a temperature difference between the cold high pressure area temperature and the temperature of the area to be studied;
inputting the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front position into the galloping event prediction model established in claim 1 or 2 to predict whether a galloping event occurs.
4. The regional power line galloping event prediction method of claim 3, further comprising, in the event of a galloping event:
predicting the development stage of the galloping event according to the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position, and determining the duration time and the end time of the galloping event according to the development stage of the galloping event.
5. A regional power transmission line galloping event model building device is characterized by comprising:
the device comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring historical galloping event information of an area to be researched, ground cold high-pressure information in the historical galloping event process, and the temperature and air pressure of the area to be researched; the historical dance event information includes a start time and an end time; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
the first calculation unit is used for calculating the air pressure difference between the cold high-pressure central air pressure and the air pressure of the area to be researched and calculating the temperature difference between the cold high-pressure area temperature and the temperature of the area to be researched;
and the model building unit is used for building a galloping event prediction model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front position and the historical galloping event information.
6. The model building apparatus of claim 5, wherein the historical galloping event information further comprises galloping event hazard results; the hazard result comprises at least one of an impact range, a dancing amplitude, and whether to trip a wire break;
the model building unit is further used for building a galloping event damage result model according to the air pressure difference, the temperature difference, the cold high pressure range, the cold high pressure front edge position and the historical galloping event information.
7. An apparatus for predicting a regional power line galloping event, comprising:
the second acquisition unit is used for acquiring ground cold high-pressure information, and the temperature and the air pressure of the area to be researched; the ground cold high-pressure information comprises cold high-pressure central air pressure, cold high-pressure area temperature, cold high-pressure range and cold high-pressure front position;
a second calculation unit for calculating a pressure difference between the cold high-pressure central air pressure and the area-to-be-studied air pressure and calculating a temperature difference between the cold high-pressure area temperature and the area-to-be-studied temperature, in a case where the area-to-be-studied temperature is above a predetermined temperature;
a prediction unit for inputting the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front position to a galloping event prediction model as set up in claim 1 or 2, to predict whether a galloping event has occurred.
8. The regional power line galloping event prediction device of claim 7, wherein the prediction unit is further configured to, in case of a galloping event,
predicting the development stage of the galloping event according to the air pressure difference, the temperature difference, the cold high pressure range and the cold high pressure front edge position, and determining the duration time and the end time of the galloping event according to the development stage of the galloping event.
9. An electronic device comprising a processor and a memory;
the processor is adapted to perform the steps of the method of any one of claims 1 to 4 by calling a program or instructions stored in the memory.
10. A computer-readable storage medium, characterized in that it stores a program or instructions for causing a computer to carry out the steps of the method according to any one of claims 1 to 4.
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