暂态稳定多故障协调预防控制策略在线计算方法  被引量:13

A Computational Approach of Preventive Control Strategy With Multi-Contingency Constraints for Power Grid Transient Stability

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作  者:于之虹[1] 施浩波[1] 安宁[1] 江兴凌 丁平[1] 严剑峰[1] 田芳[1] 李亚楼[1] 

机构地区:[1]中国电力科学研究院,北京市海淀区100192

出  处:《电网技术》2014年第6期1554-1561,共8页Power System Technology

基  金:国家高技术研究发展863计划项目(2011AA05A119);国家电网公司大电网重大专项资助项目(SGCC-MPLG001-2012)~~

摘  要:提出一种电力系统暂态稳定多故障约束预防控制策略计算方法。通过预想故障位置拓扑分析,对失稳故障进行解耦;依据故障严重程度制定合适的多故障调整时序,将多个故障约束的预防控制问题分解成若干个单一故障的稳定控制决策问题,最终得到满足所有暂态稳定约束的预防控制调整策略。调整过程兼顾预防控制的经济性。结合并行计算技术,使算法具备在线应用可行性。仿真算例证明了所提控制策略计算方法的正确性。A computational approach of preventive control strategy with multi-contingency constraints for power grid transient stability is proposed.Firstly,through topology analysis on the locations of preconceived faults the faults causing instability are decoupled; secondly,based on the fault severity an appropriate control sequence to cope with the multi-contingencies is drafted,thus the preventive control problem with multi-contingency constraints is decomposed into several stability control and decision problems for the single fault; finally the preventive control and adjustment strategy satisfying all transient stability constraints is achieved.To each contingency,the trajectory sensitivities of relative rotor angles to the mechanical power of each candidate generator are calculated and used to determine the prior dispatching order of the generators.During the adjustment process the economy of preventive control is taken into account.Integrating with parallel computing technique,the proposed algorithm possesses the feasibility of on-line application.The correctness of the proposed computational approach of preventive control strategy is validated by simulation results of IEEE 39-bus New England test system and a certain actual trans-regional interconnected power grid.

关 键 词:暂态稳定 轨迹灵敏度 拓扑分析 控制时序 稳定控制 并行计算 

分 类 号:TM721[电气工程—电力系统及自动化]

 

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