Power grid harmonic power flow phasor matrix calculation method supporting rapid development and model expansion

A technology of harmonic power flow and matrix calculation, which can be used in calculations, complex mathematical operations, instruments, etc. It can solve problems such as low program efficiency, unsuitable for actual engineering conditions, and inconvenient expansion of harmonic sources.

Active Publication Date: 2021-04-16
FUZHOU UNIV
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Problems solved by technology

[0004]The current harmonic power flow calculation is not suitable for large-scale networks, and it is inconvenient to expand the harmonic source, so the efficiency of the program is not high, and it is not suitable for engineering practice Condition

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  • Power grid harmonic power flow phasor matrix calculation method supporting rapid development and model expansion
  • Power grid harmonic power flow phasor matrix calculation method supporting rapid development and model expansion
  • Power grid harmonic power flow phasor matrix calculation method supporting rapid development and model expansion

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[0103] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0104] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0105] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention relates to a power grid harmonic power flow phasor matrix calculation method supporting rapid development and model expansion. The method comprises the steps of S1, setting harmonic times, statistical model initial values of various harmonic sources and an iterative error limit; S2, generating a fundamental wave and harmonic wave admittance matrix according to the input network parameters; S3, calculatng fundamental wave power flow; S4, detecting a node with a harmonic source, generating an index matrix, predicting harmonic data by using a harmonic source statistical model according to a fundamental wave power flow result, and performing harmonic power flow calculation; S5, updating the fundamental wave load power by utilizing the harmonic network loss power; and S6, judging whether the front and back node injection power errors are smaller than an iterative error limit, if so, calculating convergence, outputting a harmonic power flow calculation result, and otherwise, returning to the step S3. According to the power grid harmonic power flow phasor matrix calculation method based on support of rapid development and model expansion and program architecture based on thinking of the phasor matrix, rapid development and efficient calculation of large-scale power grid harmonic power flow simulation are realized.

Description

technical field [0001] The invention relates to the field of power system security, in particular to a method for calculating a power grid harmonic power flow phasor matrix that supports rapid development and model expansion. Background technique [0002] The harmonic problem of the power system has attracted people's attention in the 1930s, and then due to the development of modern industrial technology, the nonlinear load in the power grid has increased significantly, such as arc and contact welding equipment, submerged arc furnaces, etc., which are widely used in industry , Ferrosilicon furnace, high-frequency furnace, etc. At the same time, the rapid development of power electronics technology has made thyristor rectification and commutation technology widely used, which has greatly increased the harmonics in the power grid. The impact and harm of harmonics on the power system are very serious. It is mainly manifested in reducing the power factor of the power supply syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/16G06Q50/06
Inventor 张逸林金榕李传栋邵振国刘雄飞
Owner FUZHOU UNIV
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