Computer construction method of medium-voltage distribution network power supply framework

Abstract

The invention relates to a construction mode of a medium-voltage distribution network power supply framework, in particular to a computer construction method of the medium-voltage distribution network power supply framework. The medium-voltage distribution network power supply framework is constructed on the basis of a power supply model, the regional characteristic and the load characteristic of a transformer substation are sufficiently considered, and the medium-voltage distribution network power supply framework is developed from the wiring mode to the standardized power supply mode, is clear and standard on the basis of unified criterion and processing of a computer, accords with the landform characteristic of a region and improves reliability of a distribution network. The medium-voltage distribution network power supply framework further optimizes the integral power supply capacity of the distribution network, and achieves maximum utilization of main transformers and lines. In addition, the medium-voltage distribution network power supply framework constructed on the basis of the power supply model can achieve matching of the integral load supply capacity of the model and the power supply transfer capacity of lines in the model, enables an upper level power grid and a lower level power grid to be coordinated, and leads loads between all the main transformers and the lines in the medium-voltage distribution network power supply framework to be balanced as far as possible.

Description

technical field [0001] The invention relates to a method for forming a power supply structure of a medium-voltage distribution network, in particular to a computer construction method for a power supply structure of a medium-voltage distribution network. Background technique [0002] The power supply structure of the distribution network is the "bones" of the medium-voltage distribution network, and a strong grid structure is the basis for the safe, reliable and high-quality operation of the power grid. However, for a long time, due to China's vast territory and complex terrain, domestic research and practice on the structure of medium-voltage distribution networks has mainly focused on the connection mode, which only reflects the structure and relationship between several medium-voltage feeders in extremely localized areas. The contact relationship cannot reflect the power supply structure of substations under different terrain and load density levels in the regional power ...

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Problems solved by technology

[0003] Secondly, the evaluation of the wiring mode only stays on the line side, which cannot reflect the characteristics of the substation side of the power supply model; most of the distribution system evaluation indicators are formulated according to the current distribution network, and most of the indicators are only applicable to the evaluation of the current network, such as distribution Oil-free rate, equipment integrity, line model standards, etc.

Existing evaluation systems for wiring modes and distribution systems cannot be directly applied to the evaluation of power supply models

Finally, because the traditional medium-voltage distribution network planning and design pay more attention to the wiring mode of the feeder, the overall grid structure lacks scalability design, the grid construction is not clear enough, and there is no unified standard, which is not conducive to the development of distribution automation technology. Realization in the actual power distribution system

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