Method for determining meteorological risks of surrounding of transmission tower in electric power system
A technology for power systems and transmission towers, which is applied in the field of power system operation analysis and decision-making, can solve problems such as difficult quantification of environmental meteorological risks, and achieve the effect of solving environmental meteorological risks that are difficult to quantify, meeting actual needs, and accurately reflecting and predicting.
Inactive Publication Date: 2015-05-13
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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[0005] The purpose of the present invention is to propose a method for determining the meteorological risk of the surrounding environment of power system transmission poles and towers, to provide integrated, unified and more intuitive environmental meteorological risk assessment levels for load channel transmission lines, to solve the impact of current transmission channel capacity on the environment. Difficult to Quantify Meteorological Risks
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[0026] The method for determining the meteorological risk of the surrounding environment of the electric power system transmission pole tower proposed by the present invention comprises the following steps:
[0027](1) Taking the tower to be evaluated in the transmission line of the power system as the center, according to the set area radius, divide the different environmental meteorological risk assessment areas from 0 to 4, and obtain five levels of areas, namely the 4th level area, the 3rd level area level area, level 2 area, level 1 area and level 0 area; the schematic diagram of area division is as follows figure 1 As shown, the fourth-level area is centered on the tower to be evaluated and the radius is R 4 range; the third area is centered on the tower to be evaluated, with a radius of R 3 range; the second-level area is centered on the tower to be evaluated, with a radius of R 2 range; the first-level area is centered on the tower to be evaluated, with a radius of R...
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The invention relates to a method for determining meteorological risks of the surrounding of a transmission tower in an electric power system, and belongs to the technical field of analysis and decision-making for operation of electric power systems. The method includes the steps of: respectively establishing a thunderstorm risk evaluation equation, a typhoon risk evaluation equation, a forest fire risk evaluation equation, a rainstorm risk evaluation equation and an icing risk evaluation equation of the tower to be evaluated at current moment by taking a tower to be measured as a center and classifying according to a set area radius, and at least obtaining the comprehensive environmental meteorological risk result of the tower evaluated at present. According to the method provided by the invention, based on monitored data and external meteorological forecasting information obtained by online monitoring devices for microclimate and icing of a power transmission line, by giving consideration to the severity of the meteorological environment and distance between the meteorological environment and the evaluation object, and taking full account of the time and space variation characteristics of environmental meteorological risks, a multistage evaluation area scheme is adopted, so that the space-time transformation trend of the environmental meteorological risks can be more reasonably and accurately reflected and forecasted to a certain extent.
Description
technical field [0001] The invention relates to a meteorological risk determination method for the surrounding environment of power system transmission towers, and belongs to the technical field of power system operation analysis and decision-making. Background technique [0002] With the rapid development of the power grid, meteorological factors have an increasing impact on the safe operation of the power grid. Since the transmission and distribution lines of the power system, especially the long-distance high-voltage transmission lines, have been in complex weather environments for a long time, the possibility of failures under harsh environmental weather conditions increases. Therefore, the risk assessment method of transmission lines under different weather conditions is studied. It is convenient to realize online risk warning and take safety measures in advance, which is conducive to realizing the stability of the power system. [0003] With the continuous improvement...
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IPC IPC(8): G01W1/10
CPCG01W1/10
Inventor 王奇常安宋云海邓军张晗胡军赵根陈翔宇
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID