单机无穷大系统中卷积法计算轨迹灵敏度的有效性验证  

Validity verification of trajectory sensitivity calculation by convolution method in single-machine infinite bus system

作　　者：冯治 安军 韩磊 沈清野 FENG Zhi;AN Jun;HAN Lei;SHEN Qingye(State Grid Zhoushan Power Supply Company,Zhoushan,Zhejiang 316000,China;Magique Power System Research Institute,Northeast Dianli University,Jilin,Jilin 132012,China)

机构地区：[1]国网浙江省电力有限公司舟山供电公司,浙江舟山316000 [2]东北电力大学微通电力系统研究室,吉林吉林132012

出　　处：《浙江电力》2023年第8期54-59,共6页Zhejiang Electric Power

基　　金：教育部“长江学者和创新团队发展计划”项目(IRT1114);吉林市科技发展计划项目(201162503);东北电力大学博士科研启动基金项目(BSJXM-201013)。

摘　　要：为利用广域测量系统计算轨迹灵敏度,提高电力系统动态安全分析的水平,基于单机无穷大系统分析了卷积法计算轨迹灵敏度的有效性。理论分析表明,改变发电机模型不会改变轨迹灵敏度与轨迹之间的关系。在理论分析的基础上进行动态仿真,仿真结果表明,不同模型可以仿真出几乎一致的动态轨迹。以上研究表明,卷积法计算轨迹灵敏度不受系统模型的影响。建立评价卷积法计算轨迹灵敏度精度结果的指标,通过改变发电机模型、扰动量、初始运行状态遍历动态仿真轨迹,结果表明单机无穷大系统中卷积法计算轨迹灵敏度具有高可靠性,实际工程中卷积法计算轨迹灵敏度的结果具有较高参考性。Based on the single-machine infinite bus system,the validity of trajectory sensitivity calculation by convolution method is deeply analyzed,which provides support for using wide area measurement system to calculate the trajectory sensitivity and improves the level of dynamic safety analysis in power system.Theoretical analysis shows that,the relationship between the track sensitivity and the track will not change by changing generator models.Dynamic simulation is carried out on the basis of theoretical analysis.The simulation results show that different models can simulate the almost consistent dynamic track.The above research shows that the convolution method for calculating the track sensitivity is not affected by the system model.An index is established to evaluate the accuracy of the convolution method for calculating the trajectory sensitivity.By changing the generator model,the disturbance amount and the initial operation state,the dynamic simulation trajectory is traversed.The results show that the convolution method for calculating the trajectory sensitivity in the single-machine infinite bus system has high reliability,the results of convolution method for calculating the trajectory sensitivity in the actual engineering are of high reference value.

关 键 词：轨迹灵敏度 卷积法 数值仿真 有效性 

分 类 号：TM73[电气工程—电力系统及自动化]