A 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 good identification and correction capabilities, reduce running time, and improve effectiveness.

Active Publication Date: 2022-02-22
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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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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  • A distribution network topology error identification algorithm based on ami measurement information
  • A distribution network topology error identification algorithm based on ami measurement information
  • A 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 present invention relates to a distribution network topology error identification algorithm based on AMI measurement information. Its calculation features include the following steps: Step 1. Calculate the coupling node voltage U to which each load belongs pc , to obtain the voltage sample space of the coupling node to which the load belongs; Step 2, calculate the branch current I to which each load belongs L , to obtain the current sample space of the branch to which the load belongs; Step 3, according to the voltage and current sample spaces obtained in Step 1 and Step 2, respectively calculate the voltage correlation coefficient and current correlation coefficient between each load; Step 4, complete the verification of the topology with corrections. The invention effectively reduces the running time required for identification, ensures the quickness of topology identification and the reliability and effectiveness of topology identification.

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 Patents(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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