Black-start sub-region division method based on cooperation degree optimization

Abstract

The invention discloses a black-start sub-region division method based on cooperation degree optimization. The method comprises the steps of obtaining topology information of an existing to-be-startedgrid structure as an initial topology; dividing a to-be-recovered unit and preliminarily planning a to-be-recovered load in combination with the position information; calculating a regional load starting coefficient of the initial topology in combination with active and reactive power information; according to the calculation result of the regional load starting coefficient, carrying out coordination degree optimization on the load under a certain weight; and reducing the load weight, and obtaining a final network frame partitioning result based on cooperation degree optimization. A concept of a regional load starting coefficient is proposed for the first time and is applied to sub-region division based on cooperation degree optimization, so that on one hand, the electrical distance between a to-be-recovered unit and a black-start power supply is minimized, and the throughput of a black-start network is maximized; on the other hand, the average waiting time of each sub-region is shortened, and the black-start efficiency is improved; smooth starting of important loads is guaranteed preferentially, and power failure losses of the important loads are effectively reduced.

Description

technical field [0001] The invention belongs to the method for the black start process of the power grid after a large blackout in the field of electric power systems, and in particular relates to a black start sub-area division method based on the degree of coordination optimization. Background technique [0002] With the continuous development of the global economy, people's production and life demand for electricity continues to increase, and the reliability of the power system is the basis for its operation. However, with the grid-connected application of clean and green energy such as photovoltaics and wind power, the power system structure is becoming increasingly large and complex. In recent years, there have been many large-scale blackouts around the world, causing serious social and economic losses, such as the blackout in Japan in 2011, the blackout in India in 2012, the blackout in Turkey in 2015, and the power grid blackout in the Far Northwest of Brazil in 2016....

AI Technical Summary

Problems solved by technology

However, in the existing technology, there are few grid reconfiguration strategies that consider the importance of load, and the few researches on the importance of load also have shortcomings such as single goal and poor grid stability.

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