Wind power integration low-frequency oscillation analysis method and system based on inverse characteristic trajectory method

• Main Authors: WANG YONGCAN, CHEN GANG, HUANG GECHAO, SHI PENG, WANG XI
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2024
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a wind power integration low-frequency oscillation analysis method and system based on an inverse feature trajectory method, and relates to the technical field of power grid safety, and the key points of the technical scheme are that the method comprises the following steps: constructing a Heffron-Phillips model considering fan integration; the method comprises the following steps: simplifying a Heffron-Phillips model considering fan grid connection into a feedback connection model capable of realizing application of a feature trajectory method; based on the feedback connection model, performing stability margin solving by applying an inverse feature trajectory method; analyzing the influence of wind power integration on the system open-loop transfer function matrix; and analyzing the influence of wind power integration on low-frequency oscillation of the system. According to the method, the accuracy of the approximate value of the stability margin is improved on the basis of the chara