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Power transmission line high resistance operation state recognition method based on WAMS data

A technology of transmission lines and identification methods, applied in the direction of electrical digital data processing, special data processing applications, measuring electricity, etc., can solve problems such as failure to provide

Active Publication Date: 2014-03-19
BEIJING SIFANG JIBAO AUTOMATION +1
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  • Abstract
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Problems solved by technology

[0005] Aiming at the technical problems in the prior art that the WAMS system cannot provide switch information in the power transmission network and cannot judge the operation status of high resistance due to the influence of the principle and layout of the PMU itself, the present invention provides a method for directly judging by WAMS data The method of the high-resistance commissioning state, through the topological relationship at both ends of the transmission line, obtains the connection between the high-resistance storage and the transmission line, and calculates the transmission operation parameters by using WAMS data, and then judges the high-resistance commissioning mode

Method used

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  • Power transmission line high resistance operation state recognition method based on WAMS data
  • Power transmission line high resistance operation state recognition method based on WAMS data
  • Power transmission line high resistance operation state recognition method based on WAMS data

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[0048] specific implementation plan

[0049] The technical scheme of the present invention is described in further detail below in conjunction with accompanying drawing

[0050] as attached figure 1 Shown is the π-type equivalent circuit of the transmission line. Such as figure 2 As shown, it is the specific implementation process of the invention, according to the description attached figure 2 And in conjunction with specific embodiment technical scheme of the present invention is described in further detail:

[0051] 1. Read the power system model data and transmission line parameters in EMS.

[0052] 2. Perform topology analysis on the power model read in step 1. Assuming that all switches are closed, perform topology analysis to determine whether the two ends of the transmission line are associated with high impedance.

[0053] 3. Read the voltage and current collected by the WAMS system at the beginning and end of the transmission line for 2 minutes

[0054] ...

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Abstract

The invention provides a power transmission line high resistance operation state recognition method based on WAMS data. A power transmission line is analyzed and calculated by using the WAMS data collected by a main station, and then a power transmission line parameter is calculated according to the normal distribution theory in the probability theory. The comparison with an actually measured parameter is carried out with a calculation result as a basis, and the operational state of power transmission line high resistance is recognized.

Description

technical field [0001] The invention relates to a method for identifying high-resistance operating states of transmission lines based on WAMS data, and belongs to the professional direction of electric power systems and automation thereof in the field of electrical engineering. Background technique [0002] WAMS data has the characteristics of high data density and can be cross-sectionally aligned through its own time scale. The data of 25Hz-100Hz per second provides a large amount of data for power system analysis. Even through the traditional analysis methods of power system, a large number of analysis samples can also be obtained after analysis and calculation, providing a massive data basis for subsequent data mining and statistical analysis. [0003] Normal distribution, also called normal distribution, is a kind of probability distribution of continuous random variables. A large number of phenomena in nature, human society, psychology and education are distributed in n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G06F19/00
Inventor 李志学孟显孙晓彦杨东王立鼎
Owner BEIJING SIFANG JIBAO AUTOMATION
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