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Multisource harmonic duty allocation method, terminal equipment and storage medium

A harmonic and responsibility technology, which is applied in the field of multi-source harmonic responsibility division, can solve the problems of harmonic responsibility division method error, failure, and reduce the accuracy of harmonic source harmonic responsibility, so as to reduce interference and improve harmonic responsibility accuracy Effect

Inactive Publication Date: 2019-09-17
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing harmonic responsibility division methods, more and more attention has been paid to the influence of background harmonics on the evaluation results. In the process of harmonic responsibility quantification, the fluctuation of background harmonics will reduce the harmonic responsibility accuracy of the harmonic source, making the harmonic The wave responsibility division method causes serious errors and even the failure of the whole method

Method used

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  • Multisource harmonic duty allocation method, terminal equipment and storage medium
  • Multisource harmonic duty allocation method, terminal equipment and storage medium
  • Multisource harmonic duty allocation method, terminal equipment and storage medium

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1 of the present invention provides a multi-source harmonic responsibility division method, refer to figure 1 shown, including the following steps:

[0030] Step 1: Acquire the harmonic data set.

[0031] In this example, the figure 2 The structure shown is taken as an example. Node X is used as the node to be tested, nodes A, B, and C are used as all harmonic sources of the nodes to be tested, and the harmonic voltage data of node X at each time point and node A are collected respectively. , B, C harmonic current data at corresponding time points. And calculate the harmonic impedance of each node of A, B, C.

[0032] The harmonic voltage data and harmonic current data can be collected by commonly used instruments, such as power quality analyzers, harmonic spectrum meters, and the like.

[0033] Step 2: Calculate the background harmonic voltage of each harmonic source.

[0034] The influence of harmonic sources on the power grid system is regional. The ...

Embodiment 2

[0094] The present invention also provides a multi-source harmonic responsibility division terminal device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program The steps in the above method embodiment of Embodiment 1 of the present invention are implemented.

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Abstract

The invention relates to a multisource harmonic duty allocation method, terminal equipment and a storage medium. The method comprises the following steps: acquiring a harmonic data set; calculating the background harmonic voltage of an ith harmonic source; clustering all background harmonic voltages through a clustering algorithm, and screening a plurality of background harmonic voltages between which difference values are within a set threshold range to serve as a screening data set; selecting data corresponding to the screening data set in the harmonic data set to calculate a harmonic duty index; and allocating the harmonic duty of each harmonic source according to the harmonic duty index of each harmonic source till calculation of all harmonic sources is finished. Background harmonic waves are screened through the clustering algorithm, so that the harmonic duty accuracy is improved, and the interference of background harmonic fluctuation to harmonic duty assessment is lowered.

Description

technical field [0001] The present invention relates to the technical field of harmonic responsibility division, in particular to a multi-source harmonic responsibility division method, terminal equipment and a storage medium. Background technique [0002] Since power network transmission generally operates in an open-air environment, the voltage and current during power transmission may be affected by occasional events such as lightning strikes. In the generated harmonic data, there will be data that are quite different from the daily monitoring harmonics and last for a short time, and these abnormal harmonic data will affect the accuracy of harmonic normality analysis. Studying the division of responsibility for multi-source harmonics, mastering the actual situation of harmonics in the power system, and preventing abnormal harmonics from harming the power grid will have an important impact on promoting the safe operation of the power network, improving economic benefits, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R23/163
CPCG01R23/163G01R31/088
Inventor 吕志盛吴昊
Owner XIAMEN UNIV OF TECH