An Online Dynamic Partitioning Method for Provincial Power Grid

Abstract

The invention discloses a provincial power grid online dynamic partitioning method, and relates to a power grid partitioning method. At present, provincial dispatching operators lack provincial powergrid partition operation monitoring and analyzing functions, and no practical tools and means are used for monitoring real-time partition information and equipment operation states of a power grid. The provincial power grid online dynamic partitioning method comprises the steps of: model updating, network topology, dynamic layered partitioning and partitioning models. The dynamic layered partitioning is based on a topological model, the topological model is divided into an ultrahigh voltage main network, a high voltage main network and a high voltage distribution network according to voltage grades to generate a two-layer graph model of the high voltage main network and the high voltage distribution network. According to the technical scheme, dynamic partitioning of the provincial power grid is achieved on line, the output partitioning model data provides intuitive and clear power grid partitioning operation information for dispatching operators, the perception and active control capacity of primary equipment of the current power grid is improved, a model data basis can be provided for functions such as power supply reliability analysis and transfer capacity monitoring and analysisof partitioning loads, and safe and stable operation of the power grid is guaranteed.

Description

technical field [0001] The invention relates to a grid partition method, in particular to a provincial grid online dynamic partition method. Background technique [0002] "Guidelines for Power System Security and Stability" (DL755-2001) clearly stipulates that a reasonable power grid structure must meet the principles of stratification and zoning, and the stratification and zoning of the power grid should be carried out reasonably according to the grid voltage level and power supply area. Reasonable stratification is to connect power plants and loads of different scales to the appropriate voltage network; rational partitioning is to connect the external power supply to the receiving end system with the receiving end system as the core, forming an area where supply and demand are basically balanced. It is also connected to the adjacent area through the tie line. At the same time, it is also clearly stipulated that: with the construction of the higher-level voltage grid, the ...

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Problems solved by technology

[0003] At present, the current provincial commissioning and operation personnel lack the monitoring and analysis functions of provincial power grid partition operation, especially when multiple main transformers in 500kV power plants are running in partitions and the partition grid adequacy is insufficient, there are no practical tools and means to monitor the real-time partition of the power grid Information and equipment operating status affect judgment and decision-making, and various application function modules of the dispatch automation system need to obtain and analyze the sub-operating information of the power grid, repeated analysis and calculation, waste of resources, reduce processing speed, and also affect the safe and stable operation of the power grid

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