孙永辉¹,王悦臻²
SUN Yonghui¹, WANG Yuezhen²

• 1:国网内蒙古东部电力有限公司经济技术研究院，呼和浩特 010010
• 2:巴彦淖尔电业局乌拉特前旗供电分局，内蒙古 巴彦淖尔 014400

摘要(Abstract)：

风电场通过含有串补及直流输电系统外送时存在次同步谐振风险，不利于电网及风电场的安全稳定运行。在已知参数和边界条件下对锡林郭勒地区蓝旗风电汇集站的次同步谐振风险进行分析计算，利用阻抗频率扫描以及风电场接入点短路比计算，初步筛查可能存在次同步谐振风险的系统运行方式，利用PSCAD软件对可能存在的次同步谐振风险方式进行了电磁暂态仿真。结果表明风电场在多个运行工况下均存在次同步谐振的风险，谐振频率分布在5~22 Hz。最后对特高压风电场次同步谐振的两种抑制措施进行了可行性和有效性分析，并提出在实际应用中多措并举的建议。
A risk of sub-synchronous resonance exists when wind farms are transmitted through HVDC transmission system with series compensation, which endangers the safe and stable operation of power grid and wind farm. In this paper, the sub-synchronous resonance risk of Lanqi wind power gathering station in Xilin Gol League is analyzed and calculated under the known parameters and boundary conditions, and the system operation mode that may have sub-synchronous resonance risk is preliminarily screened by using impedance frequency scanning and short circuit ratio calculation of wind farm access point. PSCAD electromagnetic transient simulation is used to simulate the possible sub-synchronous resonance risk mode in detail. The result is that a risk of sub-synchronous resonance exists under multiple operating conditions, and the resonance frequency is distributed between 5 and 22 Hz. Finally, the feasibility and effectiveness of the two suppression measures for sub-synchronous resonance in UHV wind farms are analyzed, and suggestions for multiple measures in practical applications are put forward.

关键词(KeyWords)： 特高压;串补;次同步振荡;电磁暂态仿真;谐振频率
UHV;series compensation;sub-synchronous resonance;electromagnetic transient simulation;resonant frequency

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 孙永辉¹,王悦臻²
SUN Yonghui¹, WANG Yuezhen²

DOI: 10.19929/j.cnki.nmgdljs.2021.0099

参考文献(References)：

• [1] 米阳, 吴彦伟, 纪宏澎, 等.基于多组储能动态调节的独立直流微电网协调控制[J].电力自动化设备, 2017, 37(5):170-176.
  [2] 王皓靖, 刘海涛, 刘辉, 等.大规模风电汇集系统无功电压管控机制及关键技术研究[J].华北电力技术, 2014(9):48-54, 60.
  [3] 邢华栋, 张爱军, 孟庆天, 等.多端风电汇集电网输电线路的功率极限研究[J].内蒙古电力技术, 2017, 35(2):7-9, 14.
  [4] 蒋伟明, 赵晋斌, 高明明, 等.具有电压自恢复特性的独立直流微电网控制策略研究[J].电网技术, 2020, 44(9):3547-3555.
  [5] H Geng, C Liu, G Yang. LVRT Capability of DFIG-Based WECS Under Asymmetrical Grid Fault Condition[J]. IEEE Transactions on Industrial Electronics, 2013, 60(6):2495-2509.
  [6] 程时杰, 曹一家, 江全元.电力系统次同步振荡的理论和方法[M].北京:科学出版社, 2009.
  [7] LI Yanchao, FAN Lingling, MIAO Zhixin. Replicating real-world wind farm SSR events[J].IEEE Transactions on Power Delivery, 2020(35):339-348.
  [8] 刘颖, 常富杰, 钱华东, 等.±500 kV兴安高压直流外送次同步振荡风险分析[J].电力大数据, 2017, 20(11):21-25.
  [9] I Villanueva, A Rosales, P Ponce, et al. Grid-Volt-age-Oriented Sliding Mode Control for DFIG Under Balanced and Unbalanced Grid Faults[J]. IEEE Trans-actions on Sustainable Energy, 2018, 9(3):1090-1098.
  [10] W Guo, L Xiao, S Dai, et al. LVRT Capability Enhancement of DFIG With Switch-Type Fault Current Limiter[J]. IEEE Transactions on Industrial Electronics, 2015, 62(1):332-342.
  [11] Z.-C. Zou, J.-C. Liao, Y. Lei, et al. Postfault LVRT Performance Enhancement of DFIG Using a Stage-Controlled SSFCL-RSDR[J]. IEEE Transactions on Ap-plied Superconductivity, 2019, 29(2):1-6.
  [12] M Firouzi, G B Gharehpetian. LVRT Performance Enhancement of DFIG-Based Wind Farms by Capacitive Bridge-Type Fault Current Limiter[J]. IEEE Transac-tions on Sustainable Energy, 2018, 9(3):1118-1125.
  [13] 方力, 潘学萍, 鞠车, 等.SVC对双馈风电场次同步振荡影响及抑制策略[J].广东电力, 2019, 32(3):52-58.
  [14] LIU Huakun, XIE Xiaorong, ZHANG Chuanyu, et al. Quantitative SSR analysis of series-compensated DFIG-based wind farms using aggregated RLC circuit model[J]. IEEE Transactions on Power Systems, 2017(32):474-483.
  [15] 杨琦, 李岚, 赵荣理, 等.基于模糊控制虚拟电阻的双馈风力发电机低电压穿越励磁控制[J].电力电容器与无功补偿, 2020, 41(2):158-163.
  [16] 刘其辉, 董楚然, 于一鸣.双馈风电并网系统高频谐振机理及抑制策略[J]. 电力自动化设备, 2020, 40(9):163-172.