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Automatic Cohomology Recognition Method Based on Analytic Hierarchy Model

A Hierarchical Analysis and Identification Method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as increasing the difficulty of decision-making and increasing considerations.

Inactive Publication Date: 2014-10-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The increase in consideration factors will undoubtedly increase the difficulty of decision-making

Method used

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  • Automatic Cohomology Recognition Method Based on Analytic Hierarchy Model
  • Automatic Cohomology Recognition Method Based on Analytic Hierarchy Model
  • Automatic Cohomology Recognition Method Based on Analytic Hierarchy Model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] figure 1 It is a flowchart of the automatic coherence recognition method based on the analytic hierarchy process, which is divided into five steps. Step 1 is the basic step, which provides an implementation platform for subsequent steps; Step 2, Step 3, and Step 4 are in a parallel relationship, and there is no sequence requirement, and Step 2 is the core step.

[0071] This embodiment aims to verify the effectiveness of the rocking curve similarity mining method described in the present invention. The selected system is as Figure 5 The specific implementation process of the IEEE39 node standard system shown is as follows:

[0072] Step 1: Establish an AHP model for rocking curve similarity mining.

[0073] 1) Create a structure such as figure 2 The AHP is shown in the part below the dotted line.

[0074] 2) Construct a judgment matrix for pairwise comparison and calculate the weight coefficient

[0075] When determining the parameters of the judgment matrix C,...

Embodiment 2

[0110] The purpose of this embodiment is to verify the practicability of the automatic coherence recognition method based on the analytic hierarchy process model of the present invention through the dynamic equivalent effect. The selected system is the actual system of Shandong Power Grid, and the specific implementation process is as follows:

[0111] Step 1: Build an AHP model for dynamic equivalence

[0112] 1) Create a structure such as figure 2 The Analytic Hierarchy Model shown.

[0113] 2) Construct a judgment matrix for pairwise comparison and calculate the weight coefficient

[0114] When determining the parameters of the judgment matrix B, considering the important role of the rocking curve in coherence identification, the judgment matrix

[0115] B = 1 1 / 3 7 ...

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Abstract

The invention discloses an automatic synchronization recognition method based on a hierarchical analyzing model, which comprises the steps of: establishing the hierarchical analyzing model capable of being used for synchronization recognition aiming at demands of dynamic equivalence; for a stable multimachine power angle swinging curve in limited time periods, extracting characteristic quantity from a time domain and a frequency domain and carrying out similarity analysis; reading network data and generator parameters of a program composition, analyzing similarity of unit network rack topologic relationships and similarity of unit parameters; and integrating similarity indexes by applying a hierarchical analyzing method, and calculating similarity of dynamic behaviors of a generator. The invention overcomes the problems of subjectivity and one-sidedness commonly existing in a process of synchronously recognizing dynamic equivalence at the present stage, and ensures that the traditional single decision is changed into the multi-attribute comprehensive decision in the process of synchronization recognition, thus the accuracy of the synchronization recognition is improved and the dynamic equivalence effect is improved.

Description

technical field [0001] The invention relates to the field of power system modeling and simulation, in particular to an automatic coherence identification method based on analytic hierarchy process (AHP). Background technique [0002] The coherence phenomenon exists in the dynamic process of the power system, that is, the consistency or similarity of the dynamic characteristics of different units. At present, it is necessary to study the coherence of the unit in the low-frequency oscillation analysis, transient stability analysis, and dynamic equivalent of the power system. Correct identification of coherent clusters is of great significance for the study of power system stability. [0003] With the wide application of high-power power electronic devices, the impact on the power system is increasing. To study it, it is necessary to conduct electromagnetic transient simulation. However, the electromagnetic transient simulation is limited by the algorithm, and the scale of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 张海波孙玉玮
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)