Highly reliable planning method for contact points in power distribution system

Abstract

The present invention relates to a highly reliable planning method for contact points in a power distribution system. The method is characterized by comprising a method for analyzing reliability of a multi-contact power distribution system, and a method for establishing a contact point planning model and solving the model. The method for analyzing reliability of the multi-contact power distribution system is implemented by using a minimum cut sets method for partition reliability calculation. The contact point planning model is established and solved. According to the method provided by the present invention, the minimum cut sets method for partition reliability calculation is used to analyze reliability of the multi-contact power distribution system; and the contact point planning model is established by using a system power supply reliability indicator as a constraint and by using optimal economy as a goal, and is solved by using a genetic algorithm, thereby achieving optimal economy and a good return on investment with the high power supply reliability of the system being ensured, and achieving better engineering directing value.

Description

technical field [0001] The invention belongs to the technical field of power supply and distribution, and in particular relates to a high-reliability contact point planning method for a power distribution system. Background technique [0002] Communication is an important part of power distribution system, which is of great significance to load transfer and power supply recovery after a fault, and is an important means to improve the reliability of power distribution system. The current construction and transformation of distribution automation mostly focus on the installation or automation transformation of switchgear or distribution automation terminal equipment. If the limit is exceeded, the related load will still be cut off and the power will be lost for a long time. Therefore, a new connection must be built in the corresponding feeder section to ensure load transfer and power supply restoration after a destructive fault occurs. [0003] At present, many studies have ...

AI Technical Summary

Problems solved by technology

The existing technology mainly simplifies the single-connection planning between feeders, optimizes the tie-line of the two-connection wiring mode, selects the location of the tie-line between rings, optimizes the configuration of the tie switch, optimizes the configuration of the internal tie switch of the same feeder, and considers Reliable planning of the number and location of distribution network section switches and tie switches, optimal configuration of distribution network tie switches with photovoltaic power sources based on dynamic segmentation of load-photovoltaic equivalent load curves, consideration of power failure losses and equipment Invested in the optimal allocation of tie switches, using fuzzy membership functions to represent the importance of loads, the optimal segmentation and connection calculation methods under complex topological structures, and the combination and configuration methods of automatic segmentation switches and automatic tie switches. The above technical solutions are from different There are certain limitations in the connection planning of power distribution system from different perspectives, it is difficult to improve the rationality of power grid planning and optimization, and it cannot meet the growing power supply requirements

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