Power transmission line resistance parameter estimation method and device based on electric quantity data

A transmission line and electricity data technology, applied in the direction of measuring devices, measuring resistance/reactance/impedance, measuring electrical variables, etc., can solve the problems that the analysis of power grid loss is far from the actual deviation, the influence is large, and the accuracy is not high.

Pending Publication Date: 2020-05-22
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0003] At present, the lean operation of the power grid generally aims at the minimum active network loss of the power grid, and the lean operation of the power grid with the goal of minimizing the network loss is based on the transmission line resistance parameters. However, due to the low accuracy of the traditional transmission line resistance estimation method, resulting in The power grid loss analysis is far from the actual deviation, which has a great impact on the dispatch plan, power grid operation mode arrangement, and power grid lean operation

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  • Power transmission line resistance parameter estimation method and device based on electric quantity data
  • Power transmission line resistance parameter estimation method and device based on electric quantity data
  • Power transmission line resistance parameter estimation method and device based on electric quantity data

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Embodiment Construction

[0090] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0091] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0092] The invention provides a transmission line resistance parameter estimation method based on electricity data, such as figure 1 As shown, the method includes:

[0093] Obtain the collec...

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Abstract

The invention relates to a power transmission line resistance parameter estimation method and device based on electric quantity data. The method comprises the steps of: acquiring line loss electric quantity acquisition values and calculation values of a power transmission line at all time periods, determining a line loss electric quantity acquisition value matrix of the power transmission line according to the line loss electric quantity acquisition values of the power transmission line at all time periods, determining a line loss electric quantity calculation value matrix of the power transmission line according to the line loss electric quantity calculation value of the power transmission line in each time period, and determining a resistance estimation value of the power transmission line by utilizing the line loss electric quantity acquisition value matrix and the calculation value matrix of the power transmission line. The method improves the accuracy and practicality of the powertransmission line resistance estimation value, and provides guarantee for safe operation of the power grid.

Description

Technical field [0001] The invention relates to the field of power system calculation, in particular to a method and device for estimating resistance parameters of transmission lines based on power data. Background technique [0002] In recent years, with the interconnection of my country's power grids, the scale of the power grid has continued to expand. As an important part of the power grid parameters, the accuracy of transmission line parameters is critical to the safe and stable operation of the power system. At present, the transmission line parameters for online applications such as state estimation and power flow calculation of the dispatch automation system are generally fixed values ​​without correction throughout the year. However, the actual grid operation transmission line parameters change with changes in the operating environment, especially the transmission line resistance. The parameters will increase or decrease as the temperature rises and falls. Theoretical ca...

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Application Information

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IPC IPC(8): G01R27/02
CPCG01R27/02
Inventor 刘俊潘玲玲王勇耿建段方维杨滢璇崔岱杨胜春冯树海石飞徐鹏王礼文汤必强刘建涛王刚
Owner CHINA ELECTRIC POWER RES INST
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