Open AccessStudy on Minimum Inertia Demand of System Considering Frequency Stability of MIDC Power Grid
Author(s) -
Longdi Cheng,
Weiyuan Wang,
Guizhi Xu,
Xuelian Wu,
Fengshan Dou,
Jinmin Cheng,
Hui Cai
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1346/1/012012
Subject(s) - inertia , correctness , electric power system , grid , stability (learning theory) , control theory (sociology) , frequency domain , power (physics) , frequency grid , fault (geology) , power grid , reliability (semiconductor) , computer science , time domain , engineering , mathematics , physics , geometry , control (management) , classical mechanics , quantum mechanics , machine learning , artificial intelligence , seismology , geology , computer vision , programming language
The increase of UHVDC feed capacity and the grid-connected capacity of distributed new energy lead to increasingly prominent frequency stability problem of MIDC (Multi-infeed DC) grid. Based on the simplified frequency analysis model, it theoretically analyses the influence of system inertia reduction on frequency stability under high power disturbance fault. A method for estimating the system synchronous inertia demand that meets the requirements of safe and stable operation of the system is proposed. The correctness and reliability of the proposed method are verified based on the time domain simulation data of the East China Power Grid.