Optimal configuration method of wind power virtual inertia for stable improvement with small disturbance

A technology with small disturbance stability and virtual inertia, which is used in wind power generation, single-grid parallel feeding arrangement, etc.
CN110417046BActive Publication Date: 2020-11-24CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2020-11-24

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Abstract

The invention discloses a wind power virtual inertia optimization configuration method for improving small interference stability. The method mainly comprises the following steps of 1) acquiring basicdata of a power system; 2) establishing a small interference model of the electric power system, and acquiring the state matrix As of the electric power system; 3) establishing a virtual inertia optimal distribution model; and 4), adopting a sensitivity analysis-based newton method for solving a virtual inertia optimal distribution model, and completing the optimization of the virtual inertia. According to the method, the system frequency stability is taken as a constraint condition, so that the optimization model solving result meets the requirement of the system for frequency stability. Inaddition, by utilizing the sensitivity analysis-based newton method, the virtual inertia can be reasonably distributed, so that the small interference stability of the system is improved.
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Description

technical field

[0001] The invention relates to the field of electric power system and automation thereof, in particular to a wind power virtual inertia optimization configuration method for small disturbance stable improvement. Background technique

[0002] In order to cope with the current environmental problems and future resource shortages, wind power will gradually replace traditional thermal power generation. However, due to the decoupling characteristics of the wind farm and the power system, the wind farm does not participate in the frequency response of the power grid, that is to say, the wind farm presents no inertia or low inertia, which threatens the stability of the power system. Therefore, in order to solve this problem, all countries require wind power to have the ability to provide virtual inertia to provide inertial support for the system, so that wind power can participate in the frequency response of the system. Judging from the current research, the rese...

Claims

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