WO2018019278A1 - Procédé de surveillance et d'avertissement de foudre et de tonnerre pour ligne électrique basé sur un petit radar, et support d'informations - Google Patents

Procédé de surveillance et d'avertissement de foudre et de tonnerre pour ligne électrique basé sur un petit radar, et support d'informations Download PDF

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Publication number
WO2018019278A1
WO2018019278A1 PCT/CN2017/094778 CN2017094778W WO2018019278A1 WO 2018019278 A1 WO2018019278 A1 WO 2018019278A1 CN 2017094778 W CN2017094778 W CN 2017094778W WO 2018019278 A1 WO2018019278 A1 WO 2018019278A1
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WIPO (PCT)
Prior art keywords
lightning
thunderstorm
data
radar
transmission line
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PCT/CN2017/094778
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English (en)
Chinese (zh)
Inventor
谷山强
冯万兴
王剑
郭钧天
赵淳
曾瑜
王佩
章涵
吴大伟
Original Assignee
国网电力科学研究院武汉南瑞有限责任公司
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Priority to AU2017303947A priority Critical patent/AU2017303947B2/en
Publication of WO2018019278A1 publication Critical patent/WO2018019278A1/fr
Priority to ZA2018/08653A priority patent/ZA201808653B/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/95—Radar or analogous systems specially adapted for specific applications for meteorological use
    • G01S13/958—Theoretical aspects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
    • G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
    • G01R29/033—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers (the characteristic being frequency)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/95—Radar or analogous systems specially adapted for specific applications for meteorological use
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Definitions

  • the invention relates to the field of lightning monitoring and early warning for transmission lines, and particularly relates to a lightning monitoring and early warning method for a transmission line based on a small radar and a computer storage medium.
  • Thunderstorm weather is a kind of weather phenomenon in natural phenomena.
  • disasters caused by lightning have occurred frequently and have shown a rapid upward trend.
  • Lightning is extremely harmful to the safe operation of transmission lines.
  • the fault of the transmission line accounts for a large proportion of the lightning strike trip. Preventing the lightning trip can greatly reduce the fault of the transmission line, thereby reducing the frequency of accidents in the power grid.
  • China's transmission line lightning protection has basically formed a series of effective conventional lightning protection methods, such as reducing grounding resistance, erecting lightning protection lines, installing automatic reclosing, etc., but for some mountainous lines, lightning damage is very frequent. Reducing the grounding resistance is extremely difficult, and the cost is high, the workload is large, and the effect is also limited. For this reason, the lightning protection needs to be targeted early warning, and the line that may be tripped by lightning strikes is mainly protected.
  • the existing lightning warning technology mainly relies on various hardware devices to monitor and capture the physical characteristics released before the occurrence of lightning, and each has its own advantages and disadvantages.
  • the following are common.
  • Ground electric field instrument The ground electric field instrument can monitor the cloud charging condition within a certain radius above it. Therefore, by setting different electric field strength threshold levels, it is possible to predict the possibility of local lightning. Its shortcoming is that it is not known whether the increase in electric field reflects the local cloud charge or because there is a strong charge. The cloud moves toward the location of the electric field meter.
  • Lightning broadband interferometer system It can detect the weak discharge activity in the cloud before the occurrence of lightning, and the early warning of the occurrence of lightning, it can also use its wide-band characteristics to effectively identify and eliminate the interference signal of non-lightning radiation signals. The disadvantage is that the detection range is too small. Satellite: The satellite determines the occurrence of lightning by identifying the lightning cloud and tracking the trajectory of the estimated lightning cloud. However, satellites have a poor resolution of lightning cloud sub-categories, such as cloud flash and ground flash. Radar: Forecasting lightning by detecting the climatic characteristics of lightning. Specifically, the patent application file of the publication No. CN203054097U entitled "A lightning early warning networking system" describes a lightning early warning networking system using a common electric field instrument and other supporting equipment.
  • the publication number CN202025042U named "Thunder Warning Device” proposes a scheme for estimating the distance of the lightning power source by using the dipole antenna to reach the elevation angle of the antenna array by means of the lightning radiation signal.
  • the publication number CN102095943A entitled “Lightning warning method and device” provides a scheme for estimating the distance of the lightning power source by using the lightning interferometer principle to measure the elevation angle of the lightning radiation signal to the antenna array.
  • the publication number CN202975175U entitled “A device for lightning warning” refers to the combination of multiple magnetic field monitoring antennas and an infrared spectrum monitoring system.
  • the existing lightning warning methods generally use only a few of radar, satellite, lightning data, atmospheric electric field instruments, etc., and do not combine their advantages and disadvantages and application scenarios in the lightning early warning system.
  • the incomplete data will bring about the low degree of automation of the lightning potential forecast and the low spatial resolution of lightning warning and the low degree of automation of public and decision-making service materials for lightning potential prediction and lightning warning.
  • the embodiments of the present invention provide a small radar based transmission line lightning monitoring and early warning method based on easy implementation of maintenance. Compared to the traditional way, this Embodiments of the invention make lightning warnings more accurate.
  • Embodiments of the present invention provide a lightning monitoring and early warning method for a transmission line based on a small radar, and the method includes the following steps:
  • the location of the thunderstorm at the future time k and the lightning activity intensity of the thunderstorm at the future time k are estimated;
  • the determining the thunderstorm area based on the echo reflectance data and the lightning data includes:
  • the Thundercloud is correlated with the lightning event to determine the overlap data of the echo reflectance data and the lightning data at time t; the overlap data corresponds to the thunderstorm region on the image.
  • the determining the direction and speed of movement of the thunderstorm region includes:
  • the direction and velocity of the thunderstorm region are determined.
  • the obtaining the radial radial velocity and the tangential velocity of the thunderstorm region include:
  • the determining the direction and speed of movement of the thunderstorm region based on the echo radial velocity and the tangential velocity including:
  • the sum of the parallelogram vectors is used to find the combined speed and direction of the thundercloud motion.
  • the estimated lightning activity intensity of a thunderstorm at a time k in the future includes:
  • the historical lightning current amplitude data of the region where the thunderstorm region is located at the time k in the future is used to model the probability distribution map of the region;
  • the curve fitting is performed, and the median current parameter related to the lightning activity intensity and the concentration parameter of the lightning current amplitude distribution are obtained;
  • the lightning activity intensity is determined according to the probability distribution map, the median current parameter, and the concentration degree parameter of the lightning current amplitude distribution.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing small radar based transmission line lightning monitoring and early warning method.
  • the embodiment of the invention has the following beneficial effects:
  • the embodiment of the present invention combines radar and lightning locator to obtain lightning data, wherein the radar is a millimeter wave radar, which has the advantages of wide monitoring range and high accuracy.
  • FIG. 1 is a flowchart of implementing a lightning monitoring and early warning method for a transmission line based on a small radar according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a radar echo strong reflection region closely related to lightning activity according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a specific implementation of a lightning radar monitoring and early warning method for a transmission line based on a small radar according to an embodiment of the present invention.
  • an embodiment of the present invention provides a lightning monitoring and early warning method for a transmission line based on a small radar, and the method includes the following steps:
  • Step 1 Acquire the small radar multi-layer radar echo reflectance data and obtain the lightning data through the lightning locator;
  • multi-layer radar echo reflectance data is first obtained by a small radar.
  • a radar echo strong reflection region closely related to lightning activity is obtained, as shown in FIG.
  • the area shown by the rectangular frame in Fig. 2 is the radar echo strong reflection area.
  • a lightning is represented by one point, then multiple lightnings appear in the image to become a face (stacking of multiple points), that is, where the black dots are stacked in Fig. 2, where lightning occurs.
  • the rectangular frame area (arrow pointing) as shown in Fig. 2 is a radar echo strong reflection area. It should be understood by those skilled in the art that not all locations in the radar echo strong reflection region are where the actual lightning occurs.
  • the real lightning cloud data is obtained in two ways.
  • One is the radar wave returned by a small radar on a wide area (the radar wave includes various meteorological clouds), and the other is the lightning data returned by the lightning locator.
  • Step 2 Determine a thunderstorm area based on the echo reflectance data and the lightning data
  • the step 2 includes the following steps:
  • Step 2-1 at the current time t, extracting the echo reflectance data P obtained by the radar device meteorological entity;
  • Step 2-2 obtaining lightning data I at time t from the lightning locator
  • Step 2-3 correlate the thundercloud with the lightning event, and determine the overlapping data of the echo reflectance data (cloud data) P returned by the radar and the lightning strike data I returned by the lightning locator;
  • the boundary can be found in the image by image segmentation, and the thunderstorm region can be drawn.
  • the thunderstorm area corresponds to the overlapping data of the cloud data P and the lightning data I.
  • Step 3 Determine the direction and speed of movement of the thunderstorm area
  • step 3 may include:
  • Step 3-1 Acquire the echo radial velocity and tangential velocity of the thunderstorm region
  • the echo radial velocity is a basic parameter for small radars to detect lightning data, which can be obtained by small radars.
  • the echo tangential velocity is obtained according to the radial velocity of the echo.
  • Step 3-2 Determine the direction and speed of the thunderstorm region based on the echo radial velocity and tangential velocity.
  • the echo radial velocity and the tangential velocity are both vectors, and the vector can be summed to determine the direction and velocity of the thunderstorm region.
  • step 3-1 and step 3-2 after obtaining the echo radial velocity by the small radar, tracking multiple volume scans (such as about 5 minutes per volume scan, usually 5 times) The tangential velocity of the region is derived, and finally the direction and speed of the thunderstorm region are comprehensively calculated.
  • the radial velocity v is a basic parameter of the small radar for lightning data detection
  • the radial velocity v can be obtained, that is, the thunderstorm region obtained by the small radar detection is obtained.
  • Radial velocity v the data obtained by using the radar for volume scanning, such as the returned five times data, tracking the thundercloud motion trajectory to obtain the tangential velocity p;
  • the parallelograms are summed by vectors to find the combined velocity and direction of the v and p of the thundercloud.
  • Step 4 According to the direction and speed of the thunderstorm region, estimate the location of the thunderstorm at the moment k and the intensity of the thunderstorm at the future k time;
  • the motion distance can be obtained, that is, the position where the thunderstorm occurs at the future k time (k is a positive number) is obtained.
  • the intensity of lightning activity in the future k time due to the persistence of lightning activity and the short-term prediction interval, it is assumed that the current lightning quantity and lightning current distribution represent the potential lightning activity intensity of the future thunderstorm area.
  • a and b parameters related to the lightning activity intensity are obtained, and the lightning activity is determined according to the probability distribution map, the median current parameter and the concentration parameter of the lightning current amplitude distribution. strength.
  • a is the median current (the probability of occurrence of lightning current exceeding this amplitude is 50%)
  • kA kilograms
  • b is the concentration parameter of the distribution of lightning current amplitude.
  • the size of the a and b parameters represents the strength of the lightning activity. If an area has a lightning current that exceeds its value, the probability of lightning in the area is 50%. If the lightning intensity parameter is made more precise, the least squares method can be used to control the errors of the two parameters a and b.
  • Step 5 determining whether the transmission line tower is located in a location area where the thunderstorm occurs at a time k in the future, generating a determination result, and determining whether an alarm is generated according to the determination result;
  • the step is to retrieve the tower data base, read the coordinates of the transmission line tower, and judge whether the transmission line tower is located in the thunderstorm prediction area according to the coordinates. If it is not located, no alarm is generated, and if it is located, an alarm is generated.
  • the transmission line voltage level determines the range of its lightning protection level; again, the structure of the transmission line and its parameters are important factors affecting its lightning resistance level.
  • the embodiment of the present invention is based on the position matching of the two areas of the transmission line tower area and the thunderstorm prediction area, and simultaneously considers the lightning protection level of the tower, and issues an alarm to the transmission line tower of the lightning strike.
  • the radar and the lightning positioning instrument are simultaneously used to obtain a plurality of lightning data, so that the positioning hardware is more comprehensive and more targeted.
  • the satellite in order to overcome the radar, the satellite can only identify the cloud layer, and can not distinguish whether the cloud layer may have lightning phenomenon.
  • the lightning locator can screen the part that is more likely to generate lightning.
  • the lightning warning can be made more accurate.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores an executable program, and when the executable program is executed by the processor, the small radar-based transmission line lightning device provided by the embodiment of the present invention is implemented.
  • the monitoring and early warning method for example, the small radar based transmission line lightning monitoring and early warning method shown in FIG. 1 and FIG.
  • the storage medium includes a volatile random access memory (RAM), a read only memory (ROM), an electrically erasable programmable read only memory (EEPROM), a flash memory or other memory technology, a compact disk (CD-ROM), Digital versatile disc (DVD) or other medium that is accessed.
  • RAM volatile random access memory
  • ROM read only memory
  • EEPROM electrically erasable programmable read only memory
  • flash memory or other memory technology
  • CD-ROM compact disk
  • DVD Digital versatile disc
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • These computer program instructions can also be stored in a bootable computer or other programmable data processing
  • the apparatus is readable in a computer readable memory in a particular manner such that instructions stored in the computer readable memory produce an article of manufacture comprising instruction means implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the radar small radar
  • the lightning positioning instrument are simultaneously used to obtain the monitoring data required for various lightning warnings, so that the positioning hardware is more comprehensive and more targeted.
  • the satellite in order to overcome the radar, the satellite can only identify the cloud layer, and can not distinguish whether the cloud layer may have lightning phenomenon.
  • the lightning locator can screen the part that is more likely to generate lightning.
  • the lightning warning can be made more accurate.

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  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Business, Economics & Management (AREA)
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Abstract

L'invention se rapporte à un procédé de surveillance et d'avertissement de foudre et de tonnerre pour ligne électrique basé sur un petit radar, et à un support d'informations informatique. Le procédé de surveillance et d'avertissement de foudre et de tonnerre pour ligne électrique basé sur un petit radar comprend les étapes suivantes : étape 1, obtention de données de réflectivité d'écho radar multicouche d'un petit radar et obtention de données de survenue de tonnerre au moyen d'un dispositif de localisation de foudre et de tonnerre ; étape 2, détermination d'une zone d'orage en fonction des données de réflectivité d'écho et des données de survenue de tonnerre ; étape 3, détermination de la direction et de la vitesse de déplacement de la zone d'orage ; étape 4, estimation de la position d'un orage qui survient en un point temporel ultérieur k et de l'intensité de l'activité de la foudre et du tonnerre en fonction de la direction et de la vitesse de déplacement de la zone d'orage ; et étape 5, détermination du fait qu'un poteau et un pylône de ligne électrique sont situés au niveau de la position de l'orage qui survient au niveau du point temporel ultérieur k, production d'un résultat de détermination, et détermination de l'opportunité de générer une alarme en fonction du résultat de la détermination.
PCT/CN2017/094778 2016-07-29 2017-07-27 Procédé de surveillance et d'avertissement de foudre et de tonnerre pour ligne électrique basé sur un petit radar, et support d'informations WO2018019278A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2017303947A AU2017303947B2 (en) 2016-07-29 2017-07-27 Small radar-based thunder and lightning monitoring and warning method for electric transmission line, and storage medium
ZA2018/08653A ZA201808653B (en) 2016-07-29 2018-12-20 Small radar-based thunder and lightning monitoring and warning method for electric transmission line, and storage medium

Applications Claiming Priority (2)

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CN201610606099.9A CN106019287B (zh) 2016-07-29 2016-07-29 一种基于小型雷达的输电线路雷电监测预警方法
CN201610606099.9 2016-07-29

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WO2018019278A1 true WO2018019278A1 (fr) 2018-02-01

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PCT/CN2016/112889 WO2018018840A1 (fr) 2016-07-29 2016-12-29 Procédé de surveillance et d'alerte précoce en cas de foudre sur une ligne électrique basé sur un petit radar
PCT/CN2017/094778 WO2018019278A1 (fr) 2016-07-29 2017-07-27 Procédé de surveillance et d'avertissement de foudre et de tonnerre pour ligne électrique basé sur un petit radar, et support d'informations

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AU (1) AU2017303947B2 (fr)
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ZA (1) ZA201808653B (fr)

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CN107271795B (zh) * 2017-07-26 2019-03-08 国网江苏省电力公司苏州供电公司 适用于配电网的雷电预警方法
CN110221360A (zh) * 2019-07-25 2019-09-10 广东电网有限责任公司 一种电力线路雷暴预警方法及系统
CN110927725B (zh) * 2019-11-30 2023-03-14 兰州大学 一种基于气象雷达的雷电预警和监测方法
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CN115329284A (zh) * 2022-10-14 2022-11-11 国网江苏省电力有限公司苏州供电分公司 基于相邻时段参数的配电线路雷击跳闸概率计算方法及系统
CN116363116B (zh) * 2023-04-12 2023-09-01 周晓菲 输电铁塔雷击概率分时判断系统
CN116910491B (zh) * 2023-09-11 2024-01-23 四川弘和数智集团有限公司 一种雷电监测预警系统、方法、电子设备及存储介质
CN117349692B (zh) * 2023-12-04 2024-05-07 国网江西省电力有限公司南昌供电分公司 一种综合多雷电预警因子的配电线路雷电预警方法

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CN106019287B (zh) 2018-07-10
ZA201808653B (en) 2020-05-27
WO2018018840A1 (fr) 2018-02-01

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