Evaluation Method for Surplus Capacity of Electric Energy Alternative Supporting Power Grid Based on Grid Partitioning

Abstract

A method for evaluating the surplus capacity of the electric energy replacement supporting grid based on grid partitioning. This method first divides the user grid and functional grid of the electric energy replacement supporting grid, and then analyzes and evaluates the electric energy according to the characteristics of the electric energy replacement load in the user grid. Substitute the surplus capacity of the 10 kV level of the supporting grid, and evaluate the surplus capacity of the 110 kV and 35 kV levels of the power alternative supporting grid based on the grid structure of the high-voltage distribution network in the functional grid and the type of power substitution load. This design can not only comprehensively and accurately evaluate the surplus capacity of the electric energy replacement supporting grid, but also is simple and easy to implement.

Description

technical field [0001] The invention belongs to the field of electric energy replacement supporting grid planning, and in particular relates to a method for evaluating the surplus capacity of electric energy replacing supporting grid based on grid partitioning. Background technique [0002] In May 2016, eight national ministries and commissions jointly issued the "Guiding Opinions on Promoting Electric Energy Substitution" (Fagai Energy [2016] No. 1054) to promote a new energy consumption model of "replacing coal with electricity and oil with electricity". With the continuous deepening of the power substitution strategy, the lack of effective connection between the power grid construction and distribution network planning has gradually become prominent. Due to a large number of electric energy replacement projects with a short period from business expansion and installation to commissioning, the construction of electric energy replacement supporting grids is generally not in...

AI Technical Summary

Problems solved by technology

However, the existence of the following problems greatly increases the difficulty of surplus capacity assessment: 1) Electric energy replacement involves a wide range of fields and various technologies, and the load characteristics of various types of electric energy replacement equipment are very different. It will have different impacts on the power consumption structure, load characteristics, load curve and terminal power consumption mode of the supporting grid area; 2) Electric energy replacement supporting grid covers all levels of 110 kV, 35 kV and 10 kV, and its surplus Capacity assessment needs to comprehensively consider each voltage level

At present, there is no relevant literature at home and abroad to study this issue.

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