相邻两节点等值算法在复杂电网简化中的应用  

The application to simplify the complicated power grid through adjacent two-node equivalent method

作　　者：李洪兵[1] 李志勇[1] 穆子龙[1] 廖玉祥[1] 

机构地区：[1]国网重庆市电力公司江北供电分公司,重庆401147

出　　处：《重庆大学学报（自然科学版）》2014年第3期23-28,共6页Journal of Chongqing University

基　　金：国家自然科学基金重点项目(51037003)

摘　　要：实际电力系统呈现非辐射状网络的特点,评估研究其稳定性往往需要建立电磁暂态仿真模型,这就要求首先对系统进行简化等值。采用考虑了等值节点之间耦合阻抗的相邻两节点等值算法,成功实现了对实际复杂大电网的简化建模。德宝高压直流输电系统和南方某实际超高压交流输电系统的仿真分析表明,等值后系统的静态性能与原系统一致,同时也具备比较接近的动态响应,满足等值要求,为后续稳定性的相关研究奠定基础。Most real power systems are not radial networks and evaluation of the stability often needs to establish electromagnetic transient simulation models. So the network equivalent is required first and foremost. The adjacent two-node equivalent method, which considers the coupling impedance between equivalent nodes, is used to realize the simplification and modeling to complex power grid. The analysis and simulation on both the HVDC system from Deyang to Baoji and a real extra-high voltage AC transmission system in South China shows that the static performance of the simulated system by using the adjacent two- node equivalent method is completely equivalent to the original one, as well as the performance of dynamic equivalent is in a satisfied level. Thus the transient system model simplified can be well established to support research of power grid＇s security and stability.

关 键 词：大系统等值 等值电路 相邻两节点等值 暂态分析 

分 类 号：TM711[电气工程—电力系统及自动化]