Open AccessResearch and application of power system operation risk assessment method considering new energy grid connection
Author(s) -
Z. M. Mu,
Song Liu,
Zhenkai Li,
Wanli Mu,
Haoran Geng
Publication year - 2022
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 - 10.1088/1742-6596/2247/1/012034
Subject(s) - reliability engineering , computer science , electric power system , intermittency , weighting , probabilistic logic , grid , wind power , limit (mathematics) , mathematical optimization , power (physics) , engineering , electrical engineering , mathematics , medicine , mathematical analysis , turbulence , physics , geometry , radiology , quantum mechanics , artificial intelligence , thermodynamics
The traditional distribution network operation risk assessment does not fully consider the intermittency and volatility of new energy sources, which has an adverse impact on the security management of the power grid. Therefore, combined with the probabilistic characteristics of new energy power generation, this paper establishes a distribution network operation risk assessment model and a comprehensive risk index system including new energy grid-connected, mainly including voltage over-limit, voltage collapse, line active power over-limit, system load loss, abandoning the wind and abandoning the light, exceeding the frequency limit, etc. On this basis, this paper formulates the weighting factors of each risk index, and comprehensively judges the weak points of the system. The example analysis shows that the risk assessment method proposed in this paper can quantitatively analyze the weak links after the new energy is connected to the distribution network. This verifies the effectiveness of the proposed method and provides a reference for the future development of new energy grid-connected security.