High voltage transmission line operating state evaluating method in micro-meteorological environment

Abstract

The invention provides a high voltage transmission line operating state evaluating method in a micro-meteorological environment. The resistance R, the reactance X and the susceptance B of power parameters are combined with the micro-meteorological detection parameter data of temperature and humidity to form a system structural parameter database. Power parameters and micro-meteorological parameters are fit to form a power parameter-micro-meteorological evaluation surface. The data which are acquired in real time are used to update the database and the power parameter-micro-meteorological evaluation surface. A large number of data are acquired, updated and adjusted to construct the power parameter-micro-meteorological evaluation surface based on historical big data, and the power parameter-micro-meteorological evaluation surface is used as an initial reference surface for parameter evaluation to form a standard database. A pre-alarm difference threshold is set. A great data support is provided for power system trend monitoring, voltage dynamic stability monitoring and early warning, dynamic process monitoring and recording and accident analysis, and three-state data integration andmanagement. The manpower labor pressure of line patrol personnel is reduced. Real-time dynamic accurate data are provided for a power system.

Description

technical field [0001] The invention relates to the technical field of energy generation, supply and distribution, in particular to a method for evaluating the operating state of a high-voltage transmission line under a micro-meteorological environment. Background technique [0002] Power system network parameters are the basis of power system state estimation, power flow calculation, load distribution and other system scheduling, control, and security assessment. The accuracy and real-time performance of power grid parameters directly affect the accuracy and real-time performance of power system monitoring, decision-making and control, and affect the quality of state estimation calculation results to a certain extent. In the current power operation, the equipment nameplate parameters in the database and the network parameters of static operation are generally used for calculation and scheduling, which makes the calculation results deviate from reality and affects the normal...

AI Technical Summary

Problems solved by technology

However, under the background of power grid data redundancy, the power system operation information collected by power system monitoring software such as PMU, SCADA, EMS cannot be fully utilized and mined; the monitoring center still relies on manual line inspection to discover power The abnormal state of the parameters of the power transmission line of the system consumes a lot of labor costs, and online real-time monitoring and correction cannot be realized; the prior art research has not conducted sufficient research on the fitting relationship between the operating parameters of the power system and the environment, and has not involved The exploration of the relationship between the line operating environment and the line operating state cannot be closer to the actual operation of the power system

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