The Mechanism of Ultra-Low Frequency Oscillations With the Same Mode Shapes

被引：7
作者：
Wang, Peng [1 ]
Li, Baohong [1 ]
Zhao, Jingbo [2 ]
Liu, Tianqi [1 ]
Jiang, Qin [1 ]
Chen, Gang [3 ]
机构：
[1] Sichuan Univ, Coll Elect Engn, Chengdu 610065, Peoples R China
[2] State Grid Jiangsu Elect Power Co Ltd, Res Inst, Nanjing 211103, Peoples R China
[3] State Grid Sichuan Elect Power Res Inst, Dept Power Syst, Chengdu 610041, Peoples R China
来源：
IEEE ACCESS | 2020年 / 8卷 / 08期
关键词：
Generators; Mathematical model; Oscillators; Transient analysis; Rotors; Shape; Ultra-low frequency oscillation; mode shape; dynamic mechanism;
D O I：
10.1109/ACCESS.2020.3027970
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The ultra-low frequency oscillation (ULFO) problem reappears in China recently. Different from the classical low frequency oscillation (LFO), the generators in ULFO have the same mode shapes, namely oscillating in the same pace. To reveal the reason why ULFO generators do not oscillate inversely as classical LFO does, this paper investigates the mechanism of ULFO based on improved Philips-Heffron model of two-machine system. Through this model, the phase angle relationship between different generators is obtained. Based on the bode diagram, it is found that the phase angle difference of the two machines is around zero in ultra-low frequency band however the generator parameters change. On the contrary, the situation is different in classical low frequency band, which reveals the mechanism that generators in ULFO always oscillate in the same pace. Finally, the analysis above is validated through a 2-area 4-machine system and a 6-machine system established in PSASP software.
引用
收藏
页码：198047 / 198057
页数：11
相关论文
共 50 条
  • [21] Deep Reinforcement Learning-Based Approach for Proportional Resonance Power System Stabilizer to Prevent Ultra-Low-Frequency Oscillations
    Zhang, Guozhou
    Hu, Weihao
    Cao, Di
    Huang, Qi
    Yi, Jianbo
    Chen, Zhe
    Blaabjerg, Frede
    IEEE TRANSACTIONS ON SMART GRID, 2020, 11 (06) : 5260 - 5272
  • [22] Deep Reinforcement Learning Enabled Bi-Level Robust Parameter Optimization of Hydropower-Dominated Systems for Damping Ultra-Low Frequency Oscillation
    Zhang, Guozhou
    Zhao, Junbo
    Hu, Weihao
    Cao, Di
    Duan, Nan
    Chen, Zhe
    Blaabjerg, Frede
    JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY, 2023, 11 (06) : 1770 - 1783
  • [23] Analysis of Ultra-Low Frequency Oscillation in Southwest Power Grid Based on Measurement Data
    Ding, Guoqiang
    Xue, Ancheng
    Zheng, Chao
    Wang, Jiawei
    Liu, Baisi
    Zhang, Xin
    Bi, Tianshu
    2018 37TH CHINESE CONTROL CONFERENCE (CCC), 2018, : 8715 - 8719
  • [24] Study on Characteristics and Suppressing Countermeasures of Ultra-low Frequency Oscillation Caused by Hydropower Units
    Liu S.
    Wang D.
    Ma N.
    Deng W.
    Zhou X.
    Wu S.
    He P.
    Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2019, 39 (18): : 5354 - 5362
  • [25] Damping Torque and Synchronous Torque Analysis of Power System Ultra-low Frequency Oscillation
    Gao J.
    Li G.
    Wang K.
    Zhang H.
    Dianwang Jishu/Power System Technology, 2020, 44 (03): : 1001 - 1007
  • [26] Ultra-low frequency oscillation analysis considering thermal-hydro power proportion
    Wang P.
    Jiang Q.
    Li B.
    Liu T.
    Li X.
    Chen G.
    Zeng X.
    Blaabjerg F.
    International Journal of Electrical Power and Energy Systems, 2023, 148
  • [27] Modelling and Analysis of Frequency-Responsive Wind Turbine Involved in Power System Ultra-Low Frequency Oscillation
    Sun, Li
    Zhao, Xiaowei
    IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, 2022, 13 (02) : 844 - 855
  • [28] Analysis and Control to the Ultra-Low Frequency Oscillation in Southwest Power Grid of China: A Case Study
    Zheng, Chao
    Ding, Guoqiang
    Liu, Baisi
    Zhang, Xin
    Wang, Jiawei
    Xue, Ancheng
    Bi, Tianshu
    PROCEEDINGS OF THE 30TH CHINESE CONTROL AND DECISION CONFERENCE (2018 CCDC), 2018, : 5721 - 5724
  • [29] Analysis on Impact of Enhanced Governor on Ultra-low Frequency Oscillation in Yunnan Power Grid of China
    He Y.
    Zhang Y.
    Chen Y.
    Mo W.
    Dianli Xitong Zidonghua/Automation of Electric Power Systems, 2019, 43 (13): : 185 - 190
  • [30] A Novel Control Strategy for Hydraulic Turbines to Consider Both Primary Frequency Regulation and Ultra-Low Frequency Oscillation Suppression
    Jia, Yong
    Tan, Bangwei
    Zhang, Wentao
    Jiang, Dongrong
    Yang, Chao
    Wen, Yunhao
    ENERGIES, 2024, 17 (05)
12345