Method for analyzing distribution and transformation daily load typical curves on basis of structure features

A technology of typical curves and structural characteristics, applied in the field of power system load analysis, can solve the problems of load curve peak/valley variation differences, high experience requirements, and prone to omissions, etc., and achieve good tolerance effects

Inactive Publication Date: 2014-07-09
STATE GRID CORP OF CHINA +1
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Problems solved by technology

The existing clustering methods can better classify the daily load curves with large differences, but there are also deficiencies, mainly in the following: after classification, there may be differences in the peak/valley value changes of the same type of load curves, which is not good en

Method used

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  • Method for analyzing distribution and transformation daily load typical curves on basis of structure features
  • Method for analyzing distribution and transformation daily load typical curves on basis of structure features
  • Method for analyzing distribution and transformation daily load typical curves on basis of structure features

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specific Embodiment approach

[0023] The general installation of the distribution transformer monitoring system improves the ability to obtain the daily load curve of the distribution transformer. Understand the daily load variation law of distribution transformer. Such as figure 1 As shown, the realization of the present invention is divided into seven main steps, which are: distribution transformer daily load curve selection, daily load curve normalization processing, daily load curve smoothing processing, peak / valley time acquisition, peak / valley Acquisition of typical time periods, classification of daily load curves based on peak / valley time, and acquisition of typical daily load curves. The specific implementation steps of the present invention will be described in detail below by taking several daily load curves of a residential distribution transformer as an example.

[0024] (1) Selection of distribution transformer daily load curve

[0025] After selecting a distribution transformer, select th...

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Abstract

The invention discloses a method for analyzing distribution and transformation daily load typical curves on the basis of structure features. The method focuses on the peak/valley temporal consistency of similar daily load curves when the distribution and transformation daily load typical curves are acquired. The method includes selecting curves without abnormal data from distribution and transformation historical daily load curve databases and utilizing the curves without the abnormal data as to-be-analyzed objects; utilizing categories with high duty cycles as daily load curve typical categories by the aid of a classification process; solving the distribution and transformation daily load typical curves. The method has the advantages that peak/valley typical periods which are acquired statically are utilized as main bases in daily load curve classification procedures, and accordingly distribution and transformation daily load peak/valley occurrence time can be controlled advantageously.

Description

technical field [0001] The invention relates to a load curve analysis method, in particular to an analysis method for a typical daily load curve of a distribution transformer based on structural features, and belongs to the technical field of power system load analysis. Background technique [0002] Whether it is for the production arrangement of the power production department or the power distribution of the power transmission department, it is necessary to grasp the load change characteristics of a region. The study of the regional daily load curve has always been an important content of the power system research. With the continuous advancement of smart grids, the research on the daily load curves of cities and other large areas can no longer meet the requirements of fine management of demand-side loads. The distribution transformer load curve can better reflect the power consumption characteristics of users in local areas, and with the widespread installation of the dis...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 胡蕾徐宁贺青夏永洪
Owner STATE GRID CORP OF CHINA
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