机电—电磁混合仿真精度综合评估方法及其应用
发布时间：2019-05-07 12:52
【摘要】：机电-电磁混合仿真旨在一次仿真过程中能同时实现对大规模电力系统的机电暂态过程仿真和对局部网络的电磁暂态过程仿真,可以在节省计算资源的前提下保证局部系统的仿真精度。然而,现代电力网络交直流系统的强耦合与复杂化给混合仿真技术带来了更大的挑战,其仿真结果的精度直接影响到电网的安全经济运行,精度评估方法研究具有重要的理论意义和工程价值。本文首先总结了电力系统机电暂态仿真和电磁暂态仿真两种方法的特点,对两种仿真方法的数学模型和计算进行了对比分析,简要介绍了机电-电磁混合仿真的基本原理和分类,增强了对混合仿真的理论认识。其次对现有的电力系仿真精度评估方法进行了简要介绍,对几种常用的精度评估分析方法,特别是IEEE std 1597.1中的特征选择验证法(Feature Selective Validation, FSV)和Prony方法,进行了原理介绍和算例实现,并进一步分析了各自方法的适用性。然后结合混合仿真评估的主要观测物理量特征,基于FSV方法和Prony分析法,提出了一套适用于机电-电磁混合仿真的精度综合评估方法,对应于IEEE std 1597.1的六等级指标实现了对混合仿真的三级定量和定性评估,此外基于Matlab/GUI研发了相应的仿真精度评估软件。最后结合南方电网复杂交直流耦合系统的实际情况,应用该方法进行评估和对比分析了在六机14节点双端口测试电路系统、六机24节点四端口测试电路系统及南网2014年丰大运行方式下“八交八直”的混合仿真系统与对应全电磁仿真系统上的典型故障仿真实验数据,结果验证了所提精度综合评估方法的有效性与适用性。
[Abstract]:The mechatronics-electromagnetic hybrid simulation is designed to simultaneously simulate the electromechanical transient process of large-scale power system and the electromagnetic transient process of local network in a single simulation process. The simulation accuracy of the local system can be guaranteed on the premise of saving computing resources. However, the strong coupling and complexity of the AC / DC system in modern power network brings more challenges to the hybrid simulation technology. The accuracy of the simulation results directly affects the safe and economic operation of the power network. The research of precision evaluation method has important theoretical significance and engineering value. In this paper, the characteristics of electromechanical transient simulation and electromagnetic transient simulation of power system are summarized, and the mathematical model and calculation of the two simulation methods are compared and analyzed. The basic principle and classification of mechatronic-electromagnetic hybrid simulation are briefly introduced, and the theoretical understanding of hybrid simulation is enhanced. Secondly, the existing accuracy evaluation methods of power system simulation are briefly introduced, and several commonly used precision evaluation methods, especially (Feature Selective Validation, FSV) and Prony methods of feature selection verification in IEEE std 1597.1, are introduced in this paper. The principle is introduced and an example is given, and the applicability of each method is further analyzed. Based on FSV method and Prony analysis method, a set of precision comprehensive evaluation methods for mechatronics-electromagnetic hybrid simulation is proposed, which is based on the characteristics of the main observational physical quantities of hybrid simulation. Corresponding to the six-level index of IEEE std 1597.1, the three-level quantitative and qualitative evaluation of hybrid simulation is realized. In addition, the corresponding simulation accuracy evaluation software is developed based on Matlab/GUI. Finally, combined with the actual situation of the complex AC / DC coupling system in Southern China Power Grid, the method is used to evaluate and compare and analyze the test circuit system in the six machines and 14-node dual-port system. Six-machine 24-node four-port test circuit system, "eight alternating points and eight straight" hybrid simulation system and typical fault simulation experiment data on corresponding all-electromagnetic simulation system under Fengda operation mode of Southern Power Network in 2014. The results show that the proposed method is effective and applicable.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM743
本文编号：2471094
[Abstract]:The mechatronics-electromagnetic hybrid simulation is designed to simultaneously simulate the electromechanical transient process of large-scale power system and the electromagnetic transient process of local network in a single simulation process. The simulation accuracy of the local system can be guaranteed on the premise of saving computing resources. However, the strong coupling and complexity of the AC / DC system in modern power network brings more challenges to the hybrid simulation technology. The accuracy of the simulation results directly affects the safe and economic operation of the power network. The research of precision evaluation method has important theoretical significance and engineering value. In this paper, the characteristics of electromechanical transient simulation and electromagnetic transient simulation of power system are summarized, and the mathematical model and calculation of the two simulation methods are compared and analyzed. The basic principle and classification of mechatronic-electromagnetic hybrid simulation are briefly introduced, and the theoretical understanding of hybrid simulation is enhanced. Secondly, the existing accuracy evaluation methods of power system simulation are briefly introduced, and several commonly used precision evaluation methods, especially (Feature Selective Validation, FSV) and Prony methods of feature selection verification in IEEE std 1597.1, are introduced in this paper. The principle is introduced and an example is given, and the applicability of each method is further analyzed. Based on FSV method and Prony analysis method, a set of precision comprehensive evaluation methods for mechatronics-electromagnetic hybrid simulation is proposed, which is based on the characteristics of the main observational physical quantities of hybrid simulation. Corresponding to the six-level index of IEEE std 1597.1, the three-level quantitative and qualitative evaluation of hybrid simulation is realized. In addition, the corresponding simulation accuracy evaluation software is developed based on Matlab/GUI. Finally, combined with the actual situation of the complex AC / DC coupling system in Southern China Power Grid, the method is used to evaluate and compare and analyze the test circuit system in the six machines and 14-node dual-port system. Six-machine 24-node four-port test circuit system, "eight alternating points and eight straight" hybrid simulation system and typical fault simulation experiment data on corresponding all-electromagnetic simulation system under Fengda operation mode of Southern Power Network in 2014. The results show that the proposed method is effective and applicable.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM743
【参考文献】
相关期刊论文 前1条
1 鄂志君,房大中,王立伟,宋文南;基于EMTDC的混合仿真算法研究[J];继电器;2005年08期
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