Time-Domain Differential Protection Based on Operating and Restraining Trajectory Indices for Lines Connecting Battery Storage Energy Stations

被引:3
|
作者
Liang, Yingyu [1 ]
Pan, Cunyue [1 ]
机构
[1] China Univ Min & Technol Beijing, Sch Mech & Elect Engn, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
Trajectory; Time-domain analysis; Renewable energy sources; Fault currents; Circuit faults; Security; Indexes; Battery energy storage station; time-domain differential protection; operating trajectory index (OTI); restraining trajectory index (RTI);
D O I
10.35833/MPCE.2023.000618
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Battery energy storage stations (BESSs) pose several challenges for both phasor-based differential protection and the newly-proposed time-domain differential protection. These challenges include low sensitivity and even rejection. Besides, the negative impact of various nonideal conditions, including current transformer (CT) saturation, errors, and outliers, on the security of differential protection remains an important problem. Motivated by the aforementioned issues, this study accounts for the trajectory distribution discrepancy on Cartesian plane under various conditions and proposes a time-domain differential protection method. In this paper, the trajectory formed by operating and restraining current samples is developed. Subsequently, after considering different operating states, the fault severity levels, and nonideal conditions, the variances in trajectory distribution between internal and external faults are extensively analyzed. On this basis, the Cartesian plane is divided into operating, uncertainty, and restraining zones. Further, the operating and restraining trajectory indices are meticulously designed and a protection criterion based on these indices is formed to accurately separate internal faults from other events, unaffected by CT saturation, errors, and outliers. The exceptional performance of the proposed protection method is extensively validated through PSCAD simulations and a hardware-in-the-loop testing platform. Regarding the dependability, sensitivity, and security, the proposed protection method outperforms three state-of-the-art differential protection methods.
引用
收藏
页码:1074 / 1086
页数:13
相关论文
共 24 条
  • [21] Fast pilot protection method of multi-terminal hybrid HVDC line based on time-domain differential convolution power
    Li H.
    Chu B.
    Liang Y.
    Deng C.
    Wang G.
    Dianli Zidonghua Shebei/Electric Power Automation Equipment, 2023, 43 (06): : 175 - 182
  • [22] Improved time-domain distance protection based on fault active control for long transmission lines of PV/BES hybrid power generation system
    Zheng, Tao
    Zhang, Ruozhu
    Lv, Wenxuan
    Liu, Sen
    INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, 2024, 159
  • [23] Single-end time-domain transient electrical signals based protection principle and its efficient setting calculation method for LCC-HVDC lines
    Xiao, Hao
    Li, Yinhong
    Liu, Ruoping
    Duan, Xianzhong
    IET GENERATION TRANSMISSION & DISTRIBUTION, 2017, 11 (05) : 1233 - 1242
  • [24] Effects of a Battery Energy Storage System on the Operating Schedule of a Renewable Energy-Based Time-of-Use Rate Industrial User under the Demand Bidding Mechanism of Taipower
    Tsai, Cheng-Ta
    Cheng, Yu-Shan
    Lin, Kuen-Huei
    Chen, Chun-Lung
    SUSTAINABILITY, 2021, 13 (06)