Regional power grid load transferring method

Abstract

The invention discloses a regional power grid load transferring method. The method includes following steps: performing 500 KV regional division and 220 KV regional division on a regional power grid;searching multiple load transferring measures according to out-of-limit conditions of a 500 KV main transformer and a 220 KV main transformer; assessing the influence degrees of the multiple load transferring measures on the power supply reliability, and performing priority division on the load transferring measures according to the influence degrees; and preferably selecting and executing the load transferring measures with high priority according to the out-of-limit conditions of the 500 KV main transformer and the 220 KV main transformer until the corresponding main transformer is no longerout of limit. According to the method, the load transferring measures can be rapidly selected, the selection efficiency and the load transferring effect are improved, and the adverse influence of load transferring on the operation of the power grid can be reduced.

Description

technical field [0001] The invention relates to the technical field of power system security and stability analysis, in particular to a method for transferring load of a regional power grid. Background technique [0002] The characteristic of the regional power grid is that its jurisdiction usually includes the main transformer of 220kV and below (hereinafter referred to as the main transformer) and the lines and some 500kV main transformers. Among them, the 220kV line generally operates in the mode of ring network power supply, and the 110kV equipment usually operates in the mode of radiation network power supply. Regional power grids are generally designed in a closed loop, operate in an open loop, and are connected through a hot standby switch, and are generally radiating in structure. [0003] Load transfer is a common problem in the operation and dispatch of regional power grids. When encountering equipment overload or equipment failure and power outage, equipment main...

AI Technical Summary

Problems solved by technology

With the construction of large-scale distribution networks and the strengthening of large-scale distribution network connections, the choice of paths and methods for power supply recovery has become increasingly flexible, and load transfer methods have gradually increased, such as load method, main transformer interconnection transfer method, Comprehensive transfer matrix method, etc., when load transfer is required, the dispatcher usually needs to select the load transfer method based on experience, but due to the complexity of the operation of the power grid, the selection efficiency of the load transfer method is low due to the complexity of the power grid operation. And the selection error rate is high, the selected load transfer path is not necessarily the optimal way, the load transfer effect is not good and may have a great adverse impact on the operation of the power grid, and cannot meet the demand

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