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Distribution network topology error identification algorithm based on AMI measurement information

A distribution network topology and measurement technology, applied in the field of power system parameter identification, to achieve the effect of ensuring reliability, ensuring quickness, and reducing running time

Active Publication Date: 2018-06-15
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the current research on the identification of distribution network topology errors based on AMI measurement data is still in its infancy. Therefore, the present invention proposes a distribution network topology error identification algorithm based on AMI measurement information

Method used

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  • Distribution network topology error identification algorithm based on AMI measurement information
  • Distribution network topology error identification algorithm based on AMI measurement information
  • Distribution network topology error identification algorithm based on AMI measurement information

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Embodiment Construction

[0040] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0041] The distribution network topology error identification algorithm based on AMI measurement information used in the present invention is firstly based on the voltage distribution and current distribution characteristics of the distribution network, and in the entire time series of AMI data collection, respectively calculate the coupling node to which each load belongs The voltage value and the current value of the branch to which each load belongs to obtain the sample space of the coupling node voltage and the branch current to which each load belongs, and then perform a correlation analysis on the sample space of the obtained coupling node voltage and the branch current to which the load belongs; based on The results of the correlation analysis are used to verify the correctness of the distribution network topology and correct the wrong topolo...

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Abstract

The invention relates to a distribution network topology error identification algorithm based on AMI measurement information, which is characterized by comprising the following steps: S1, calculatingthe voltage Upc of a coupling node to which each load belongs, and obtaining a coupling node voltage sample space to which the loads belong; S2, calculating the current I<L> of a branch to which eachload belongs, and obtaining a branch current sample space to which the loads belong; S3, calculating the voltage correlation coefficient and the current correlation coefficient of the loads accordingto the voltage and current sample spaces obtained in S1 and S2; and S4, completing topology calibration and correction. The running time required for identification is reduced. The quick action of topology identification is ensured, and the reliability and effectiveness of topology identification are ensured.

Description

technical field [0001] The invention belongs to the technical field of power system parameter identification, and relates to a distribution network topology error identification method, in particular to a distribution network topology error identification algorithm based on AMI measurement information. Background technique [0002] The power system topology analysis data is mainly composed of switching quantities. However, in the process of switching quantity collection, due to system equipment, network and other reasons, bad data will inevitably be generated, resulting in errors in network topology information. However, correct network topology is the basis for power flow calculation, state estimation, fault location, isolation and power restoration, network reconfiguration, reliability analysis and other analysis. With the continuous development of smart grid construction, distribution automation systems at different levels have been put into use one after another, and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H04L45/02
CPCH02J3/00H02J2203/20H04L41/12H04L67/12H02J13/00002Y04S10/30Y04S40/18Y04S40/20Y02E60/00H04L45/02G01R19/2513H04L67/1008H04L67/101H04L67/1012
Inventor 王旭东丁一马世乾戚艳庄剑李国栋项添春林济铿王高猛
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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