基于pq分解模型的静态安全分析毕业设计.doc

PAGE 本科毕业设计（论文） 基于P-Q分解模型的静态安全分析 攀枝花学院本科毕业设计（论文） 摘要 PAGE Ⅰ 摘 要 在电力系统中，线路传输功率是否过载、节点电压是否越限直接影响电力系统的静态安全，因此，有必要对电力系统进行静态安全分析。 论文主要针对基于P-Q分解模型的静态安全分析方法及其在MATLAB中的实现进行了深入的研究。考虑到基于P-Q分解模型的静态安全分析方法来源于潮流计算中的P-Q分解模型，论文首先研究了基于P-Q分解模型的潮流计算。而后，针对支路断线的预想故障，对基于P-Q分解模型的静态安全分析方法进行了研究。最后，根据给定的5节点环网系统数据，采用MATLAB实现了基于P-Q分解模型的潮流仿真计算；在此基础上，实现了基于P-Q分解模型的静态安全分析仿真研究，并对断线后系统的运行状态进行了分析，给出了系统断线后的安全状态。 关键词 电力系统，静态安全分析，P-Q分解模型，MATLAB，5节点环网 攀枝花学院本科毕业设计（论文） ABSTRACT Ⅱ ABSTRACT In the power system, whether the transmission power is overloaded , or node voltage is over the limits will absolutely take a effect on the static security of the power system. Therefore, it is necessary to take a static security analysis on the system. This paper mainly conducts in deeply research on static security analysis method based on P-Q decomposition model and its implementation in the MATLAB environment. first of the paper, power flow calculation using P-Q decomposition is the primary task, considering the method, static security analysis method, simplified from P-Q decomposition model. Then, the static security analysis method based on P-Q model will be studied, assuming the one branch breakdown. In the end, according to the given 5_node loop networks data, achieved this mission, flow calculating was successful using P-Q decomposition in MATLAB environment. Further more, the simulation of static security analysis based on P-Q decomposition model was achieved. While comparing the system operation state after one branch breakdown with the stable state, no one branch breakdown. Naturally the final result includes secure state of one branch-outage system. Key words Power system, Static security analysis, P-Q decomposition method, MATLAB, 5-bus loop network 攀枝花学院本科毕业设计（论文） 目录 Ⅲ 目 录 TOC \o 1-3 \u 摘 要 h I ABSTRACT h II 1 绪论 h 1 1.1课题的研究背景和研究意义 h 1 1.2 课题的国内