SONG Guobing,GAO Xiaoping,ZHANG Chenhao,et al.Fast Busbar Protection for Low-frequency Transmission System of Offshore Wind Power[J].Automation of Electric Power Systems,2024,48(2):29-36.
SONG Guobing,GAO Xiaoping,ZHANG Chenhao,et al.Fast Busbar Protection for Low-frequency Transmission System of Offshore Wind Power[J].Automation of Electric Power Systems,2024,48(2):29-36. DOI: 10.7500/AEPS20230706004.
Fast Busbar Protection for Low-frequency Transmission System of Offshore Wind Power
After a busbar fault in the low-frequency transmission system of offshore wind power takes place
the equivalent potential and impedance of the converter-type power source are no longer considered constant like traditional power grids due to the switching and adjustment process of control. The paper theoretically analyzes the adaptability of busbar current differential protection and clarifies the impact modes of fault control strategies on the sensitivity of differential protection. A busbar protection is proposed based on time-domain full component model identification
utilizing the different equivalent fault models corresponding to internal and external busbar faults. This protection principle reflects the changes in the topology of the protected components themselves
and theoretically has the advantage of not being affected by power source characteristics. It is also applicable to other converter-type power grids. At the same time
the proposed protection is implemented in the time domain without the problem of phasor extraction
and the operation speed is fast. Finally
a simulation model is built in PSCAD/EMTDC to verify the reliability and speed of the proposed busbar protection.
HUANG Minghuang , WANG Xiuli , LIU Shenquan , et al . Technical and economic analysis on fractional frequency transmission system for integration of long-distance offshore wind farm [J]. Automation of Electric Power Systems , 2019 , 43 ( 5 ): 167 - 174 .
JIA Ke , YANG Bin , LIU Qian , et al . Transient analysis of system-level fault based on transient current back-substitution of inverter interfaced generator [J]. Automation of Electric Power Systems , 2022 , 46 ( 3 ): 113 - 120 .
ZHANG Baohui , YIN Xianggen , SONAN Jiale , et al . Power system protection relay [M]. 2nd ed . Beijing : China Electric Power Press , 2010 : 233 - 234 .
SUONAN Jiale , DENG Xuyang , ALIMJAN Kader , et al . A novel principle of integrated impedance based bus-bar protection [J]. Power System Protection and Control , 2010 , 38 ( 18 ): 1 - 7 .
SUONAN Jiale , DENG Xuyang , JIAO Zaibin , et al . Novel busbar protection based on fault component integrated impedance [J]. Automation of Electric Power Systems , 2008 , 32 ( 8 ): 34 - 38 .
DENG Xuyang , SUONAN Jiale , WANG Zhien , et al . A novel busbar protection based on sequence component integrated impedance [J]. Power System Technology , 2011 , 35 ( 7 ): 208 - 213 .
ZOU Guibin , SONG Shenglan , XU Chunhua , et al . Fast busbar protection based on waveform integral of directional traveling waves [J]. Proceedings of the CSEE , 2014 , 34 ( 31 ): 5677 - 5684 .
GIL M , ABDOOS A A . Intelligent busbar protection scheme based on combination of support vector machine and S-transform [J]. IET Generation , Transmission & Distribution, 2017 , 11 ( 8 ): 2056 - 2064 .
ZOU G B , GAO H L . A traveling-wave-based amplitude integral busbar protection technique [J]. IEEE Transactions on Power Delivery , 2012 , 27 ( 2 ): 602 - 609 .
HAN Minxiao , FAN Yiwen , LIU Jinjun , et al . Concept and practice of converter-based grid [J]. Power System Technology , 2023 , 47 ( 2 ): 539 - 555 .
GAO Xiaoping , ZHANG Chenhao , SONG Guobing , et al . Control strategies of offshore wind power low-frequency transmission system under asymmetric fault of low-frequency side [J]. Electric Power Automation Equipment , 2023 , 43 ( 10 ): 160 - 166 .
FANG Y , JIA K , YANG Z , et al . Impact of inverter-interfaced renewable energy generators on distance protection and an improved scheme [J]. IEEE Transactions on Industrial Electronics , 2019 , 66 ( 9 ): 7078 - 7088 .
GU Qiaogen , ZHANG Xiaoyu , LYU Hang , et al . Fast differential protection of low-frequency transformer based on fault negative sequence component [J]. Automation of Electric Power Systems , 2023 , 47 ( 7 ): 184 - 192 .
ZHENG Liming , JIA Ke , HOU Laiyun , et al . Singular value decomposition based protection for AC transmission lines of VSC-HVDC system with offshore wind farms [J]. Proceedings of the CSEE , 2020 , 40 ( Supplement 1 ): 75 - 83 .
WANG Fengguang , DU Xingwei , LI Li , et al . Processing logic against current transformer disconnection of busbar differential protection [J]. Automation of Electric Power Systems , 2023 , 47 ( 14 ): 167 - 173 .
HE Jiali , LI Yongli , DONG Xinzhou . Principles of relay protection of electric power system [M]. 5th ed . Beijing : China Electric Power Press , 2018 : 323 - 324 .
CHEN Haidong , PAN Xueping , HUANG Hua , et al . Equivalent modeling of LVRT and current limiting links for distributed photovoltaic and wind turbine generators [J]. Electric Power Automation Equipment , 2022 , 42 ( 7 ): 25 - 32 .
ZHOU Zexin , YU Su , LI Yong , et al . Analysis of the incorrect operation mechanism of the phase comparison distance protection caused by the change of power angle in the scenario of MMC-HVDC connected renewable power system [J]. Proceedings of the CSEE , 2023 , 43 ( 5 ): 1730 - 1739 .
SUONAN Jiale , YANG Cheng , SONG Guobing , et al . Survey on relay protection based on model recognition [J]. Power System Protection and Control , 2010 , 38 ( 24 ): 23 - 29 .
HUANG Zixin , LIN Xiangning , MA Xiao , et al . Reconstruction method of saturation current of current transformer in relay protection application related to wind power [J]. Transactions of China Electrotechnical Society , 2022 , 37 ( 19 ): 4823 - 4834 .