Power system self-adaption partition method based on principal component analysis method

A principal component analysis, power system technology, applied in control/regulation systems, electrical components, circuit devices, etc., can solve problems such as difficulties, the determination of the number of partitions depends on artificial given, and the online application of inaccurate partitioning methods, etc. The effect of improving accuracy

Active Publication Date: 2014-12-24
TSINGHUA UNIV
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Problems solved by technology

In the existing methods for partitioning the power system, on the one hand, the quasi-steady-state characteristics of the power system are not taken into account when modeling the power system, resulting in inaccurate modeling;...

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  • Power system self-adaption partition method based on principal component analysis method
  • Power system self-adaption partition method based on principal component analysis method
  • Power system self-adaption partition method based on principal component analysis method

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Embodiment Construction

[0031] A kind of power system self-adaptive zoning method based on principal component analysis method proposed by the present invention is further described as follows in conjunction with accompanying drawings: the method comprises the following steps:

[0032] A power system adaptive partitioning method based on the principal component analysis method proposed by the present invention, such as figure 1 As shown, the method includes the following steps:

[0033] 1) Power system network modeling

[0034] The power system network is modeled using the method of reactive source control space, assuming that there are g generator nodes in the power grid that can participate in automatic voltage control, forming a set G, and n load buses, forming a set L; for the power system network The modeling specifically includes:

[0035] 11) Calculate the quasi-steady-state sensitivity matrix S: set the jth generator node in the set G, j=1, 2,...g, as the PQ node; for other generator nodes ...

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Abstract

The invention relates to a method for analyzing the structure of a power system, and belongs to the technical field of power system evaluation and control. The method comprises the steps that a reactive source space control method is adopted to carry out modeling on a power system network, and partition is carried out on a motor in the power system according to the model through a principal component analysis method; then, a load bus is added to the partition of a corresponding generator, and finally all the generators and the load buses in the power system are divided into p partitions. The method has the advantages that modeling is carried out on the power system through quasi-steady-state sensitivity, and the modeling method is more accurate than a traditional method. According to the power system self-adaption partition method based on the principal component analysis method, a more accurate and scientific partition number determining method is provided, and compared with a traditional partition number determining method, the partition scheme of the power system can be determined in a self-adaption mode.

Description

technical field [0001] The invention belongs to the technical field of power system evaluation and control, and relates to a method for analyzing the structure of a power system. The method divides the power system into several partitions according to the structure analysis results to simplify the calculation or control difficulty of the power system. Background technique [0002] With the continuous complexity of the power system network structure, it is very difficult to analyze and control the complete power system network. Through the analysis of the power system structure, it is necessary to divide the power system into multiple partitions with relatively simple structures. A method to effectively reduce the computational difficulty. In the existing methods for partitioning the power system, on the one hand, the quasi-steady-state characteristics of the power system are not taken into account when modeling the power system, resulting in inaccurate modeling; In the stud...

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Application Information

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IPC IPC(8): H02J3/00
CPCG05F1/625G05F1/66
Inventor 孙宏斌郭庆来王彬张伯明吴文传葛怀畅
Owner TSINGHUA UNIV
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