Method for estimating reliability of power distribution network based on segment model

Abstract

The invention discloses a method for estimating the reliability of a power distribution network based on a segment model, and the method comprises the steps: extracting a power grid single-line topological file meeting the IEC-CIM standard based on a spatial information service platform of the State Grid Corporation of China; designing a line model, and classifying the line model; designing a line calculation and analysis module; carrying out the fusion of an analysis result of the line calculation and analysis module, giving a fundamental example through combining with a big-data analysis reliability index, and carrying out the estimation of the reliability of the power distribution network through employing a fault model consequence analysis method. According to the invention, an estimation model is generated automatically, and the method achieves the quick statistics of the reliability index of a load point. The method achieves the scientific data analysis, and reduces the repeated definition and segment leakage caused by the recognition of a segment through human eyes. The method greatly improves the work efficiency, and the method just needs about 3 minutes for the calculation and analysis of the reliability of a single line based on a unified data interface.

Description

technical field [0001] The invention mainly studies the reliability evaluation of the distribution network, and designs and develops a set of mathematical models and analysis components with the topological characteristics of the power network to provide support for the reliability evaluation of the distribution network frame. Background technique [0002] Traditional power grid reliability assessment work generally includes data collection, data analysis, data entry, index calculation, index release and other links. The calculation model is not automated, the sample of the parameter model is small, and the data collection, input, and data filtering work for a single evaluation work is tedious and inefficient. At the same time, because the grid structure of the power grid is an irregular tree and graph structure, the reliability of the power grid does not represent simple numerical accumulation, but also includes complex model abstraction and formulation of the principle of ...

AI Technical Summary

Problems solved by technology

This analysis technique of segmenting the line from the data end has a huge amount of data in the analysis process, the accuracy is low, and the system response time is too long, which cannot meet the accuracy and practicability requirements, and ignores the characteristics of the power grid topology, such as Switch state, live state, power point, etc.

[0005] The above existing technologies do not use a model that conforms to the characteristics of the grid structure to manage the topology data, which makes the memory loading process time-consuming and the accuracy of the segmentation results is low, which ultimately leads to inaccurate reliability evaluation obtained by this technology and cannot guide the grid power distribution. Reliability Tips for Network Lines

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