Method for strengthening transmission safety of overhead line by using microclimate real-time monitoring information

Abstract

The invention discloses a method for strengthening the transmission safety of an overhead line by using microclimate real-time monitoring information. Via the method, the accuracy and timeliness of information such as state monitoring, limit prediction, abnormal early warning and the like through reasonable point distribution of a monitoring device and panoramic perception of a microclimate operating environment can be ensured; real-time and visual real-time information support is provided for improving the dynamic and lean management level of the thermal stability limit of the power transmission equipment, optimizing the operation mode and perfecting a power grid emergency strategy; on the premise of complying with conductor temperature limit provisions, not changing the current situationof a power grid and properly arranging an on-line monitoring system, key factors such as microclimate and electrical operation are synchronously monitored, operation limit prediction and safety grading early warning are realized by applying an edge algorithm, and the problem of load section bayonet is dynamically solved; and the transmission capacity and safety of a power transmission line or a section are effectively improved.

Description

technical field [0001] The invention relates to the technical field of dynamic capacity increase of overhead lines in power systems, in particular to a method for enhancing the safety of overhead line transmission by utilizing micro-meteorological real-time monitoring information. Background technique [0002] From the perspective of line operation, the transmission capacity of overhead transmission lines is not only directly related to the structural parameters and electrical operating parameters of the conductors, but also closely related to the micro-meteorological environment parameters around the conductors (or corridors). Usually, micrometeorological environmental parameters such as wind speed, sunshine, ambient temperature, air humidity, and air density are obviously related to the latitude and longitude, altitude, season, day and night, and hour of the monitored point, that is, they have the characteristics of time-space scale marking. From the perspective of power g...

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Problems solved by technology

[0003] At present, the power system equipment department cooperates with the dispatching department to determine the annual thermal stability limit of electrical equipment according to the summer operation mode, winter operation mode, and spring and autumn operation mode. The difference is particularly obvious, and the simultaneous recurrence probability of the above micro-meteorological constraints is as low as about 0.02%, so the above thermal stability limit cannot truly reflect the transmission capacity of the transmission line

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