New energy power system recovery path searching method based on improved network weight

Abstract

The invention discloses a new energy power system recovery path searching method based on improved network weight. The method comprises the following steps: calculating weight factors of a line, a generator node and a transformer substation node, and taking the weight factors as a basis for selecting the line and the node in a path searching process; based on the type of the to-be-recovered node,determining the value of the coefficient corresponding to each type of node weight factor, and calculating the combined weight of the to-be-recovered node; analyzing new energy and load access systemrequirements, and researching constraint conditions of new energy node recovery and power balance; proposing an improved node combination weight considering the influence of adjacent unrecovered generator nodes, so the opportunity of searching the generator nodes is increased, and the recovery speed of the generator nodes is increased; finally, establishing a breadth-first path search model in combination with the proposed improved node combination weight, and realizing ordered recovery of the new energy power system under the condition of considering the new energy admission capability in thesystem recovery process.

Description

technical field [0001] The present invention relates to the technical field of orderly recovery of new energy power systems, in particular to a method for searching recovery paths of new energy power systems based on improved network weights. Background technique [0002] With the gradual depletion of traditional fossil energy, the country vigorously develops new energy to meet the needs of human society for energy. However, China's new energy and load are distributed in reverse, so the State Grid Corporation of China vigorously develops UHV DC technology suitable for long-distance and large-capacity power transmission to send new energy to meet the electricity demand of the load center. Taking the Northwest Power Grid as an example, a new energy base cluster represented by Gansu, Xinjiang, and Ningxia is gradually forming a pattern of transmission through the UHV DC group. While supporting the optimal allocation of national resources, the safe and stable operation of the po...

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Problems solved by technology

[0006] The purpose of the present invention is to address the above problems, to propose a new energy power system recovery path search method based on improved network weights, so as to avoid system collapse caused by inappropriate timing and improper recovery of new energy, and to overcome the existing technology Insufficient consideration of new energy consumption in the restoration process

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