基于保护映射理论的电力系统小扰动稳定域计算方法

发布时间：2019-06-02 15:26

【摘要】：针对传统小扰动稳定域未考虑系统可能出现的持续振荡和阻尼比过低的情况,提出一种基于保护映射(Guardian map)的改进小扰动稳定域计算方法。首先,借助映射理论将系统从改进小扰动稳定域映射到负半平面上,并通过直和运算构成保护映射,然后利用能够精确求解Hurwitz矩阵稳定域的保护映射方法准确快速地求解出改进小扰动稳定域的边界。IEEE 4机11节点系统仿真结果表明:基于保护映射的电力系统改进小扰动稳定域描绘方法具有较高的精确度和有效性。最后,进一步分析发电机励磁系统参数对改进小扰动稳定域的影响,对指导系统调度运行,预防系统出现小扰动失稳具有参考意义。
[Abstract]:In view of the fact that the traditional small disturbance stability domain does not take into account the possible continuous oscillation and low damping ratio of the system, an improved small disturbance stability domain calculation method based on protection mapping (Guardian map) is proposed. Firstly, with the help of mapping theory, the system is mapped from the improved small disturbance stability domain to the negative half plane, and the protection mapping is formed by direct sum operation. Then the boundary of the improved small disturbance stability region is solved accurately and quickly by using the protection mapping method which can accurately solve the Hurwitz matrix stability domain. The simulation results of the 11-bus system of the IEEE 4 machine show that the power system modification based on the protection mapping The description method of small disturbance stability domain has high accuracy and effectiveness. Finally, the influence of generator excitation system parameters on improving the stability region of small disturbance is further analyzed, which is of reference significance for guiding the operation of the system and preventing the instability of the system from small disturbance.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);
【基金】：国家重点基础研究发展计划项目(973项目)(2012CB215200) 国家自然科学基金项目(51277193) 中央高校基本科研业务费专项资金项目(2014ZZD02) 教育部留学回国人员科研启动基金资助项目(教外司留[2011]1139号) 河北自然科学基金项目(E2012502034) 北京市科技新星支持计划(Z141101001814012) 北京市优秀人才支持计划(2013B009005000001) 霍英东教育基金(141057)~~
【分类号】：TM712

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