CN109901244B - A method and device for monitoring strong winds of transmission lines in high altitude areas - Google Patents
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Abstract
本发明公开了一种高海拔地区输电线路大风监测布点方法及装置，该方法包括：采集监测区域内输电线路上故障杆塔的地形分布信息，地形分布信息包括：风区分布信息、海拔信息和河流分布信息；将由风引起的故障杆塔所在位置作为固定观测点；根据风区分布信息和预设风力等级，确定监测区域的加密观测点；根据海拔信息和预设海拔间隔高度，确定海拔观测点；根据河流分布信息，确定河流观测点；实现对监测区域的布点。可见，本实施例提供的方法及装置，选择的布点覆盖面广、布点分布合理，使得监测效果好。
The invention discloses a method and a device for monitoring strong winds of transmission lines in high-altitude areas. The method includes: collecting topographical distribution information of faulty towers on transmission lines in the monitoring area, and the topographical distribution information includes: wind area distribution information, altitude information and rivers Distribution information; take the location of the faulty tower caused by the wind as a fixed observation point; according to the distribution information of the wind area and the preset wind level, determine the encrypted observation point in the monitoring area; according to the altitude information and the preset altitude interval, determine the altitude observation point; According to the river distribution information, determine the river observation points; realize the distribution of monitoring areas. It can be seen that, with the method and device provided in this embodiment, the selected points have wide coverage and reasonable distribution, so that the monitoring effect is good.
Description
Technical Field
The invention relates to the field of power monitoring, in particular to a method and a device for monitoring and stationing a power transmission line in a high-altitude area through strong wind.
Background
In recent years, with the increasing demand for power transmission, various ultra-high voltage and large-span transmission towers are being built and used. The large-span transmission tower is usually built at a position (such as a mountain top) with a high terrain in a mountain area and exposed outdoors, and the severe natural environment can cause influence to different degrees on the stable operation of the transmission line.
In order to strengthen the stable operation of the line, different types of meteorological monitoring devices are arranged on the tower by a line operation unit. At present, a line operation unit usually adopts installation and distribution at an accident point, but the method is lack of systematic and regional research, so that the selected distribution has limitation, and the effect of researching the meteorological monitoring of the power transmission line cannot be well achieved.
Disclosure of Invention
The invention provides a high-altitude area power transmission line strong wind monitoring and stationing method and device, and aims to solve the problem of poor monitoring effect caused by the adoption of the existing monitoring and stationing method.
In a first aspect, the invention provides a high-altitude area power transmission line strong wind monitoring and point distribution method, which comprises the following steps:
collecting topographic distribution information of a faulty tower on a transmission line in a monitoring area; the topographic distribution information comprises wind area distribution information, elevation information and river distribution information;
determining the fault reason of the fault tower, and taking the position of the fault tower caused by wind as a fixed observation point;
according to the wind area distribution information and a preset wind power level, dividing the monitoring area into a plurality of sub-areas, wherein each sub-area corresponds to an observation point, and determining an encryption observation point of the monitoring area;
according to the altitude information, distributing points on the monitoring area according to a preset altitude interval height, and determining an altitude observation point;
according to the river distribution information, distributing points at positions corresponding to the river distribution information in the monitoring area, and determining river observation points;
and distributing points of the monitored area according to the fixed observation points, the encryption observation points, the altitude observation points and the river observation points.
Optionally, after the step of determining an encryption observation point of the monitored area, the method further includes:
and performing point distribution superposition on the fixed observation points and the encryption observation points, and if overlapping point distribution exists between the fixed observation points and the encryption observation points, marking the overlapping point distribution as an encryption observation point.
Optionally, the wind zone distribution information includes wind speed information; and, the process of determining an encrypted observation point for a monitored area, comprising:
dividing the wind speed information into a plurality of wind power levels according to a preset wind power level;
dividing the monitoring area into a plurality of grids according to a longitude and latitude gridding method;
and selecting an observation point in the area where the wind power level corresponding to each grid is located, and determining the encrypted observation point of the monitoring area according to the plurality of observation points corresponding to the plurality of grids.
Optionally, the altitude information comprises an altitude highest point and an altitude lowest point; and, the process of determining an altitude observation point, comprising:
determining an altitude difference value of a monitoring area according to the altitude highest point and the altitude lowest point;
arranging an observation point at a position corresponding to every other preset altitude interval height on the altitude difference value of the monitoring area to obtain a plurality of initial observation points; (ii) a
If overlapping distribution points exist between the plurality of initial observation points and the encryption observation points, the overlapping distribution points are marked as a correction observation point;
and determining an altitude observation point of the monitoring area according to the initial observation point and the corrected observation point.
Optionally, after the process of determining a river observation point, the method further includes:
and performing point arrangement superposition on the river observation points and the elevation observation points, and if overlapped point arrangement exists between the river observation points and the elevation observation points, marking the overlapped point arrangement as a river observation point.
In a second aspect, the present invention further provides a strong wind monitoring and point placement device for power transmission lines in high altitude areas, the device comprising:
the information acquisition module is used for acquiring the topographic distribution information of the faulty pole tower on the power transmission line in the monitoring area; the topographic distribution information comprises wind area distribution information, elevation information and river distribution information;
the fixed observation point determining module is used for determining the fault reason of the fault tower and taking the position of the fault tower caused by wind as a fixed observation point;
the encrypted observation point determining module is used for dividing the monitoring area into a plurality of sub-areas according to the wind area distribution information and a preset wind power level, wherein each sub-area corresponds to one observation point, and the encrypted observation points of the monitoring area are determined;
the elevation observation point determining module is used for distributing points on the monitoring area according to the elevation information and preset elevation interval heights to determine elevation observation points;
the river observation point determining module is used for distributing points at the position of the monitoring area corresponding to the river distribution information according to the river distribution information to determine a river observation point;
and the point distribution module is used for distributing points to the monitoring area according to the fixed observation points, the encryption observation points, the altitude observation points and the river observation points.
Optionally, the method further comprises:
and the first point distribution and superposition module is used for performing point distribution and superposition on the fixed observation points and the encryption observation points, and if overlapped point distribution exists between the fixed observation points and the encryption observation points, the overlapped point distribution is marked as an encryption observation point.
Optionally, the wind zone distribution information includes wind speed information; and the encryption observation point determining module comprises:
the wind power grade dividing unit is used for dividing the wind speed information into a plurality of wind power grades according to a preset wind power grade;
the grid dividing unit is used for dividing the monitoring area into a plurality of grids according to a longitude and latitude gridding method;
and the encryption observation point determining unit is used for selecting one observation point in the area where the wind power level corresponding to each grid is located, and determining the encryption observation point of the monitoring area according to a plurality of observation points corresponding to a plurality of grids.
Optionally, the altitude information comprises an altitude highest point and an altitude lowest point; and, the altitude observation point determining module comprises:
the altitude difference value determining unit is used for determining the altitude difference value of the monitoring area according to the altitude highest point and the altitude lowest point;
the initial observation point determining unit is used for arranging an observation point at a position corresponding to every other preset altitude interval height on the altitude difference value of the monitoring area to obtain a plurality of initial observation points;
a modified observation point determining unit, configured to mark the overlapping distribution point as a modified observation point when there is an overlapping distribution point between the plurality of initially determined observation points and the encrypted observation points;
and the elevation observation point determining unit is used for determining the elevation observation point of the monitoring area according to the initial observation point and the corrected observation point.
Optionally, the method further comprises:
and the second point arrangement and superposition module is used for carrying out point arrangement and superposition on the river observation points and the altitude observation points, and if the river observation points and the altitude observation points have overlapped point arrangements, the overlapped point arrangements are marked as one river observation point.
According to the technical scheme, the high wind monitoring and point distributing method and device for the power transmission line in the high altitude area provided by the embodiment of the invention comprise the following steps: the topographic distribution information of transmission line upper fault tower in the monitoring area is gathered, and topographic distribution information includes: wind zone distribution information, elevation information and river distribution information; taking the position of a tower with a fault caused by wind as a fixed observation point; determining an encryption observation point of a monitoring area according to the wind area distribution information and a preset wind power level; determining an altitude observation point according to the altitude information and a preset altitude interval height; determining a river observation point according to the river distribution information; and realizing distribution of the monitoring area. Therefore, the method and the device provided by the embodiment have the advantages that the selected distribution coverage is wide, the distribution is reasonable, and the monitoring effect is good.
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In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any inventive exercise.
Fig. 1 is a flowchart of a strong wind monitoring and stationing method for a power transmission line in a high-altitude area according to an embodiment of the present invention;
fig. 2 is a structural block diagram of a strong wind monitoring and point distributing device for a power transmission line in a high altitude area according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a flowchart of a strong wind monitoring and stationing method for a power transmission line in a high-altitude area according to an embodiment of the present invention.
Referring to fig. 1, the method for monitoring and stationing the power transmission lines in the high-altitude area by the strong wind provided by the embodiment of the invention comprises the following steps:
s1, collecting topographic distribution information of the faulty pole tower on the power transmission line in the monitoring area; the topographic distribution information includes wind zone distribution information, elevation information, and river distribution information.
When a tower in a monitoring area has a fault, the fault tower which causes line fault tripping due to strong wind is collected in real time, and the terrain distribution information of the fault tower is determined, wherein the terrain distribution information comprises the altitude of a corresponding terrain, the terrain and landform, the wind power distribution condition of the monitoring area and the river distribution condition in the area, so that the point distribution condition can be fully considered.
S2, determining the fault reason of the fault tower, and taking the position of the fault tower caused by wind as a fixed observation point.
The reasons for the faults of the towers on the transmission line are various, and wind power is the largest influence factor. According to the information collected in the first step, the specific line towers which have faults caused by excessive wind can be known, and then the accident tower is selected as an accident area observation station.
Therefore, in the embodiment, the position of the fault tripping tower caused by wind is used as the fixed observation point, the point distribution rule is not adjusted, the observation point is used as the reference observation point, and the observation points corresponding to the positions where the faults caused by other reasons are located are adjusted, so that all the observation points in the monitoring area can be accurately determined.
S3, dividing the monitoring area into a plurality of sub-areas according to the wind area distribution information and the preset wind power level, wherein each sub-area corresponds to an observation point, and determining the encryption observation point of the monitoring area;
in the embodiment, the distribution is performed according to the distribution condition of the wind areas, the wind areas are partitioned according to the preset wind power level in the monitoring area, and each partition is used as an encryption observation point for distribution, so that the distribution diversity is improved.
Specifically, in this embodiment, the wind zone distribution information includes wind speed information; and, a process of determining an encryption observation point for a monitored area, comprising:
s31, dividing the wind speed information into a plurality of wind power grades according to a preset wind power grade;
the wind speed of each sub-area in the monitoring area is different, so the monitoring area needs to be graded according to the different wind speeds. In the embodiment, the wind speed can be divided into 7 wind grades according to 5.5m/s, 8m/s, 10.8m/s, 13.9m/s, 17.2m/s, 20.8m/s and 24.5m/s, and the deficiency is considered according to the small principle.
S32, dividing the monitoring area into a plurality of grids according to a longitude and latitude gridding method;
and then dividing the monitoring area by a longitude and latitude gridding method by taking 0.4 as a unit to obtain a plurality of grids.
S33, selecting one observation point in the area where the wind power level corresponding to each grid is located, and determining the encrypted observation point of the monitoring area according to the plurality of observation points corresponding to the plurality of grids.
Each grid corresponds to a corresponding wind power level, 1 observation point is selected in the area where the wind power level is located, and finally, the encrypted observation points of the monitoring area are formed according to the observation points corresponding to the grids.
In order to avoid that there is coincidence between the fixed observation point determined by the determined wind-induced fault and the encryption observation point, which causes duplication of stationing, waste of resources, and low stationing efficiency, in this embodiment, after the step of determining the encryption observation point of the monitoring area, the method further includes:
and performing point distribution superposition on the fixed observation point and the encryption observation point, and if overlapping point distribution exists between the fixed observation point and the encryption observation point, marking the overlapping point distribution as an encryption observation point.
And (4) performing superposition processing on the fixed observation points and the encryption observation points, and if overlapping distribution points exist between the fixed observation points and the encryption observation points, recording the overlapping distribution points as only one encryption observation point or only one fixed observation point so as to enable data to be assimilated and matched.
S4, according to the altitude information, according to the preset altitude interval height, distributing points on the monitoring area, and determining an altitude observation point;
in this embodiment, points are distributed according to the altitude condition of the monitoring area, the method is designed for the high mountain complex terrain, the set density of the monitoring stations should consider the region range represented by each station, and the preferred wind gap, bealock, watershed, mountain top protrusion, windward slope and the like are taken as the monitoring stations. And according to a certain height interval, points are distributed at equal intervals on the altitude so as to determine the altitude observation points.
Specifically, the altitude information includes an altitude highest point and an altitude lowest point; and, a process of determining an altitude observation point, comprising:
s41, determining an altitude difference value of the monitoring area according to the highest altitude point and the lowest altitude point;
the method comprises the steps of firstly determining the highest elevation point and the lowest elevation point corresponding to a monitoring area, and subtracting the highest elevation point and the lowest elevation point to determine the elevation difference value of the monitoring area.
S42, arranging an observation point at a position corresponding to every other preset altitude interval height on the altitude difference value of the monitoring area to obtain a plurality of initial observation points;
when the elevation fall of the power tower monitoring station is large, gradient observation is carried out at the highest elevation point, the lowest elevation point and the middle point, and the influence of the terrain on the wind speed change can be researched. If the highest elevation point and the lowest elevation point are preferred, then according to the preset elevation interval height, on the elevation difference value, the points are distributed at every other preset elevation interval height, and then a plurality of initial observation points on the elevation difference value can be determined.
The preset altitude interval height is a numerical value of an integral multiple of 100m, for example, the preset altitude interval height can take a value of 500m, that is, on an altitude difference value, points are distributed every 500m, and a plurality of initially determined observation points are determined.
S43, if overlapping distribution points exist between the plurality of initial observation points and the encryption observation points, marking the overlapping distribution points as a correction observation point;
in order to avoid the overlapping between the determined initial observation point and the encryption observation point, which results in duplication of distribution, waste of resources, and low distribution efficiency, in this embodiment, the initial observation point and the encryption observation point need to be overlapped, and if there is an overlap between the initial observation point and the encryption observation point, the overlapped distribution point is only recorded as a modified observation point, so as to make data assimilation and matching. Here, the modified observation point may be an initial observation point or an encrypted observation point.
And S44, determining the elevation observation point of the monitoring area according to the initial observation point and the corrected observation point.
And on the altitude difference value, determining an altitude observation point of the monitored area after the determined initial observation point and the corrected observation point obtained after superposition processing.
S5, according to the river distribution information, distributing points at positions corresponding to the river distribution information in the monitoring area, and determining river observation points;
in this embodiment, the points are distributed according to the river distribution, and if there is a valley in the monitored area, it is considered that observation points are selected near the upstream, midstream, and downstream of the river, that is, monitoring sites are distributed according to the trend of the valley, and the river observation points are determined.
In order to further avoid overlapping between the determined altitude observation point and the river observation point, which may cause repeated stationing, waste of resources, and low stationing efficiency, in this embodiment, after the process of determining the river observation point, the method further includes:
and performing point arrangement superposition on the river observation points and the elevation observation points, and if overlapped point arrangement exists between the river observation points and the elevation observation points, marking the overlapped point arrangement as a river observation point.
And (3) performing superposition processing on the river observation points and the elevation observation points, and if the two observation points have overlapped distribution points, recording the overlapped distribution points as only one river observation point or only one elevation observation point so as to enable data assimilation and matching.
And S6, distributing points of the monitoring area according to the fixed observation points, the encryption observation points, the altitude observation points and the river observation points.
After the fixed observation points, the encrypted observation points, the elevation observation points and the river observation points are determined after the multi-aspect conditions are integrated according to the method, the points are distributed at the corresponding observation points, namely, the meteorological monitoring device is arranged at each observation point, so that the selected points can play the roles of wide point distribution coverage, reasonable point distribution and good monitoring effect.
According to the technical scheme, the strong wind monitoring and point distribution method for the power transmission line in the high-altitude area, provided by the embodiment of the invention, comprises the following steps: the topographic distribution information of transmission line upper fault tower in the monitoring area is gathered, and topographic distribution information includes: wind zone distribution information, elevation information and river distribution information; taking the position of a tower with a fault caused by wind as a fixed observation point; determining an encryption observation point of a monitoring area according to the wind area distribution information and a preset wind power level; determining an altitude observation point according to the altitude information and a preset altitude interval height; determining a river observation point according to the river distribution information; and realizing distribution of the monitoring area. Therefore, the method provided by the embodiment has the advantages that the selected distribution coverage is wide, the distribution is reasonable, and the monitoring effect is good.
In order to better illustrate the beneficial effects obtained by the method provided by the present invention, the following description is made with reference to specific examples.
For example, a state strong wind monitoring network in the jurisdiction of a certain power supply bureau is arranged.
Firstly, the collected tower information of the fault trip caused by the strong wind of a certain power supply office is shown in table 1.
TABLE 1 statistics table for wind deflection accidents in 2013-2016 of a certain power supply bureau
The elevation distribution condition of the area is that pu' er sea is at east, the elevation is lower, cocklebur is at west, the area is a strong wind area, the elevation is higher, and when the difference of the sea level of the power tower is increased, monitoring points are arranged in a gradient manner at the highest point, the lowest point and the middle point.
Secondly, the first-choice fault tower is used as a monitoring point, namely, monitoring devices are arranged on 500kV small sum line N46, 110kV Jianning line N117, 110kV Gudane line N35, 110kV Dingnani loop N90 and 110kV Er-West line N57 towers.
Thirdly, combining the wind area distribution of the area, dividing the wind speed into 7 grades according to 5.5m/s, 8m/s, 10.8m/s, 13.9m/s, 17.2m/s, 20.8m/s and 24.5m/s, considering the shortage according to the small principle, then dividing the area to be monitored into a plurality of grids, dividing the longitude and latitude gridding by 0.4 unit, and selecting 1 observation point in the corresponding wind speed area in each grid.
Fourthly, the highest altitude of the area is 4239 meters, the lowest altitude is 654 meters, and the area is divided into the following 8 layers with different altitudes by taking 500 meters as one layer according to GIS data (2016): 654-1000m, 1000-1500m, 1500-2000m, 2000-2500m, 2500-3000m, 000-3500m, 3500-4000m and 4000-4239 m. And arranging a detection device on the corresponding tower in each elevation layer.
Fifth, local climatic apparent sites are preferably observed. The regional climate characteristics of the region are obvious: the air ports, bealock, watershed, mountain top are prominent, the slope facing the wind, and the like, so that the complex terrains at the mountains are used as distribution points.
Therefore, the monitoring area is distributed according to the method, and the selected distribution can play the roles of wide distribution coverage, reasonable distribution and good monitoring effect.
Referring to fig. 2, an embodiment of the present invention provides a high-altitude area transmission line strong wind monitoring and point placement device, which is used for executing the method shown in fig. 1, and the device includes:
the information acquisition module 10 is used for acquiring topographic distribution information of a faulty tower on a power transmission line in a monitoring area; the topographic distribution information comprises wind area distribution information, elevation information and river distribution information;
the fixed observation point determining module 20 is configured to determine a fault cause of the faulty tower, and use a position of the faulty tower caused by wind as a fixed observation point;
the encryption observation point determining module 30 is configured to divide the monitoring area into a plurality of sub-areas according to the wind zone distribution information and a preset wind power level, where each sub-area corresponds to one observation point, and determine an encryption observation point of the monitoring area;
an elevation observation point determining module 40, configured to arrange points on the monitoring area according to the elevation information and a preset elevation interval height, and determine an elevation observation point;
a river observation point determining module 50, configured to determine a river observation point by laying points at a position, corresponding to the river distribution information, of the monitoring area according to the river distribution information;
and a stationing module 60, configured to perform stationing on the monitored area according to the fixed observation point, the encryption observation point, the altitude observation point, and the river observation point.
Optionally, the method further comprises:
and the first point distribution and superposition module is used for performing point distribution and superposition on the fixed observation points and the encryption observation points, and if overlapped point distribution exists between the fixed observation points and the encryption observation points, the overlapped point distribution is marked as an encryption observation point.
Optionally, the wind zone distribution information includes wind speed information; and, the encryption observation point determining module 30 includes:
the wind power grade dividing unit is used for dividing the wind speed information into a plurality of wind power grades according to a preset wind power grade;
the grid dividing unit is used for dividing the monitoring area into a plurality of grids according to a longitude and latitude gridding method;
and the encryption observation point determining unit is used for selecting one observation point in the area where the wind power level corresponding to each grid is located, and determining the encryption observation point of the monitoring area according to a plurality of observation points corresponding to a plurality of grids.
Optionally, the altitude information comprises an altitude highest point and an altitude lowest point; and, the altitude observation point determining module 40 includes:
the altitude difference value determining unit is used for determining the altitude difference value of the monitoring area according to the altitude highest point and the altitude lowest point;
the initial observation point determining unit is used for arranging an observation point at a position corresponding to every other preset altitude interval height on the altitude difference value of the monitoring area to obtain a plurality of initial observation points;
a modified observation point determining unit, configured to mark the overlapping distribution point as a modified observation point when there is an overlapping distribution point between the plurality of initially determined observation points and the encrypted observation points;
and the elevation observation point determining unit is used for determining the elevation observation point of the monitoring area according to the initial observation point and the corrected observation point.
Optionally, the method further comprises:
and the second point arrangement and superposition module is used for carrying out point arrangement and superposition on the river observation points and the altitude observation points, and if the river observation points and the altitude observation points have overlapped point arrangements, the overlapped point arrangements are marked as one river observation point.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
The same and similar parts in the various embodiments in this specification may be referred to each other. Particularly, for the embodiment of the device for monitoring and distributing the points of the transmission lines in the high altitude areas in the strong wind, the description is simple because the embodiment is basically similar to the embodiment of the method, and the relevant points can be referred to the description in the embodiment of the method.
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| CN112498419B (en) * | 2020-11-25 | 2022-09-09 | 中铁第四勘察设计院集团有限公司 | Encryption method, device, equipment and storage medium |
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| CN108090285A (en) * | 2017-12-20 | 2018-05-29 | 中国科学院寒区旱区环境与工程研究所 | A kind of microclimate observation points distributing method suitable for the monitoring of complicated landform transmission line of electricity disaster caused by a windstorm |
| CN108198090A (en) * | 2017-12-18 | 2018-06-22 | 广西电网有限责任公司电力科学研究院 | A kind of power grid power transmission and distribution facility Typhoon Monitoring points distributing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106897517A (en) * | 2017-02-22 | 2017-06-27 | 中铁二院工程集团有限责任公司 | Line of high-speed railway gale monitoring optimizes automatic search method of arranging net |
| CN107194494A (en) * | 2017-04-20 | 2017-09-22 | 国网浙江省电力公司电力科学研究院 | A kind of power network Typhoon Monitoring station points distributing method |
| CN108198090A (en) * | 2017-12-18 | 2018-06-22 | 广西电网有限责任公司电力科学研究院 | A kind of power grid power transmission and distribution facility Typhoon Monitoring points distributing method |
| CN108090285A (en) * | 2017-12-20 | 2018-05-29 | 中国科学院寒区旱区环境与工程研究所 | A kind of microclimate observation points distributing method suitable for the monitoring of complicated landform transmission line of electricity disaster caused by a windstorm |
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