大规模风电接入对稳定控制系统中跳闸判据和实时决策的影响  

Impacts of Large-Scale Wind Power Integration on the Tripping Criteria and Real-time Decision-making in Stability Control Systems

作　　者：徐海波[1,2,3] 李天宇[4] 宋晓芳[2,3] 颜云松[2,3] 

机构地区：[1]华北电力大学,北京102206 [2]南京南瑞集团公司(国网电力科学研究院) [3]国电南瑞科技股份有限公司,江苏南京211106 [4]南京邮电大学自动化学院,江苏南京210046

出　　处：《陕西电力》2015年第7期11-16,共6页Shanxi Electric Power

基　　金：国家科技支撑计划项目资助(2013BAA02B01);国家电网公司科技项目"适应智能化发展需求的电网安全和充裕控制技术研究与应用"

摘　　要：大规模风电接入对电网稳定控制系统(稳控系统)提出了更高要求。针对风电机组故障穿越能力、出力波动性以及涉网保护等问题,分析了大规模风电接入对稳控系统跳闸判据和实时决策的影响,指出短路电流过小、不同的序阻抗特征以及Crowbar保护动作会降低传统稳控系统跳闸判据的灵敏性和可靠性,部分风电机组不具备故障穿越能力造成了离线控制策略表和电网实时工况难以匹配,出力波动性则给过载控制的精确决策带来了影响,最后分别针对上述问题提出了优化方向。Large-scale wind power concentrated integration raises higher requirements for power grid stability control systems （SCSs）. In the light of wind power problem features such as low voltage ride-through capability, short-term fluctuation and grid-related protection, this paper analyzes the impacts on tripping criteria and real-time decision-making technology in an SCS. Results show that the small short-circuit current, different sequence impedance characteristics and Crowbar protection may decrease the sensitivity and reliability of conventional SCSs. The off-line decisions frequently do not match real grid operating condition because of the wind turbine units without low-voltage ride-through capability. The wind power short-term fluctuation gives influences to the accuracy of overload control measures. Improvements are also pointed out for all the above problems.

关 键 词：风电 稳定控制系统 跳闸判据 实时决策 

分 类 号：TM712[电气工程—电力系统及自动化]