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

An overhead line, real-time monitoring technology, applied in meteorology, climate sustainability, and the use of multiple variables to indicate weather conditions, etc., can solve the problems of low probability of simultaneous reproduction and inability to truly reflect the transmission capacity of transmission lines. Load profile bayonet problem, the effect of improving conveying capacity and safety

CN112034302AInactive Publication Date: 2020-12-04GUIZHOU POWER GRID CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-12-04
Estimated Expiration
Not applicable · inactive patent

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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.
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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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Embodiment Construction

[0034] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0035] The method of utilizing the real-time micro-meteorological monitoring information of the present invention to strengthen the safety of overhead line transmission comprises the following steps:

[0036] Step S1: By installing online monitoring devices along the overhead transmission line, real-time collection and upload of various information of each monitoring point, including real-time operating current Im, conductor temperature θc and micro-meteorological parameters, to realize the time-space scale operation of transmission lines parameter monitoring;

[0037]In this embodiment, the mainstream site or corridor with little difference in altitude and surface of...