机电暂态-电磁暂态混合仿真接口技术  

Interface Techniques of TSP/EMTP Hybrid Simulation

作　　者：赵帅[1] 房大中[1] 赵利刚[1] 王庆平[2] 

机构地区：[1]天津大学智能电网教育部重点实验室,天津300072 [2]中国电力科学研究院,北京100192

出　　处：《天津大学学报（自然科学与工程技术版）》2013年第9期769-775,共7页Journal of Tianjin University：Science and Technology

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB219701);国家电网公司大电网重大专项资助项目(SGCC-MPLG028-2012)

摘　　要：提出电力系统仿真的机电暂态-电磁暂态混合仿真接口技术.根据研究的详细程度,将电网划分为内部电磁网络、外部机电网络和接口母线.应用Ward等值法化简外部网络,其特色是发电机与网络连接应用统一电路模型.最后得到的电磁仿真的接口电路模型,其电源的频率、相角和幅值在仿真中都是变化的.通过改进最小二乘法和对称分量法处理内部网络的电磁仿真结果,形成对应机电仿真的恒功率阻抗模型.该接口技术降低了网络的维数,提高了仿真的效率.在含有变电站的IEEE-9节点系统上进行仿真,其与商业软件PSCAD的比对结果验证了算法的正确性和有效性.Hybrid simulation interface technique of digital simulation power system was proposed in this paper, which combined transient simulation program （TSP） and electromagnetic transient program （EMTP）. Power grid was divided into external network, internal network and interface bus according to the importance of research. Three-phase Thevenin equivalent circuit model was adopted for external network in the EMTP simulation by Ward equivalent method with uniform generator models, where the frequency, angle and amplitude of the source were time-variant. The constant power impedance model for the TSP simulation was computed with the EMTP simulation results of internal network by an improved least squares method and symmetrical component method. With the interface techniques, the network dimensions of the EMTP simulation were reduced, therefore effectiveness of fault simulation is greatly en- hanced. The accuracy of the new techniques is verified through comparison of the simulation results obtained by com- mercial software PSCAD and these of the IEEE-9 bus system containing a substation.

关 键 词：电磁暂态仿真 混合仿真技术 暂态仿真 

分 类 号：TM743[电气工程—电力系统及自动化]