电源学报2024，Vol.22Issue(z1)：159-165,207,8.DOI:10.13234/j.issn.2095-2805.2024.S1.159
电力电子化受端省级电网宽频谐振稳定性研究
Research on Broadband Resonance Stability of Receiving-end Provincial Power Grid with High Penetration of Power Electronic Devices
摘要
Abstract
The broadband resonance problem of power system has become a new challenge,which is highly affected by the dynamic characteristics of controllers in non-synchronous generators,grid structures of transmission network and element parameters.Moreover,it is broadly distributed in sub-synchronous,hyper-synchronous and high-frequency segments.As a typical receiving-end provincial power grid,Jiangsu power grid will increase its capacities of wind and photovoltaic units to 68000 MW during the 14th Five-Year Plan Period,account for 34.8％ of its total generation capacities.At the same time,the capacities of outside electricity will reach 45440 MW,accounting for 30％ of its maximum load in 2025.As a result,the high penetration of power electronic devices will become the significant characteristic of Jiangsu power grid in the future,and the problem of broadband resonance will be a restriction factor that threatens its safe and stable operation.In this paper,the impedance analysis method is put forward at first,and it is compared with the eigenvalue analysis method and time-domain simulation analysis method to illustrate its advantages,disadvantages and application scopes.Then,the correctness and feasibility of the impedance analysis method for broadband resonance in large power grids are verified based on an IEEE 39-node system.Finally,the impedance analysis method is applied in Jiangsu power grid,and the characteristics of broadband resonance stability of Jiangsu power grid and the corresponding control strategy are summarized.关键词
电力电子化/受端省级电网/阻抗分析法/s域节点导纳矩阵/宽频谐振稳定性/控制策略Key words
Penetration of power electronic devices/receiving-end provincial power grid/impedance analysis method/s-domain node-admittance matrix/broadband resonance stability/control strategy分类
信息技术与安全科学引用本文复制引用
蔡晖,郭瀚临,张文嘉,祁万春,谢珍建..电力电子化受端省级电网宽频谐振稳定性研究[J].电源学报,2024,22(z1):159-165,207,8.基金项目
国网江苏省电力有限公司科技资助项目(J2020132)This work is supported by the Science and Technology Project of State Grid Jiangsu Electric Power Co.,Ltd.under the grant J2020132 （J2020132）
