多维空间中断面热稳定安全域边界特性

发布时间：2018-05-08 04:00

本文选题：热稳定 + 安全域　；参考：《电力系统自动化》2014年12期

【摘要】：提出一种计及"N-1"约束的多维空间中断面热稳定安全域边界的构建和分析方法。该方法首先通过计算系统各发电机组出力变化对断面线路的功率传输转移分布因子(PTDF),确定对断面功率传输极限影响显著的敏感机组(机群);以敏感机组(机群)的有功出力为多维空间坐标轴,以潮流可行和"N-1"约束为判据,在多维空间中搜索断面传输极限点并形成断面热稳定安全域的边界。该边界刻画了断面功率传输极限随各敏感因素的变化情况,能为运行控制提供更丰富、更准确的运行信息;更进一步分析表明该安全域边界具有较好的超平面近似特性,便于进一步实现安全域的快速计算和讨论安全域在各种优化控制问题中的应用。文中方法已在中国南方某电网运行方式计算中得到应用。
[Abstract]:A method for constructing and analyzing the boundary of thermal stability security domain of cross-section in multidimensional space with "N-1" constraints is proposed. In this method, first of all, by calculating the power transfer distribution factor (PTDFF) of the cross-section line by calculating the power output of the system, the sensitive units (clusters) which have a significant effect on the transmission limit of the cross-section power are determined, and the sensitive units (clusters) are determined by the calculation of the power transfer distribution factors of the cross-section lines. The active power of the coordinate axis of multidimensional space, Based on the criterion of power flow feasibility and "N-1" constraint, the transmission limit point of section is searched in multidimensional space and the boundary of section thermal stability security region is formed. The boundary depicts the variation of the transmission limit of cross-section power with each sensitive factor, which can provide richer and more accurate operation information for operation control, and further analysis shows that the boundary of the security domain has better hyperplane approximation property. It is convenient to realize the fast calculation of security domain and to discuss the application of security domain in various optimization control problems. The method has been applied to the calculation of the operation mode of a power grid in southern China.
【作者单位】：智能电网教育部重点实验室天津大学;中国南方电网电力调度控制中心;
【基金】：国家自然科学基金资助项目(51207100,51307116) 南方电网科技资助项目(K-ZD2012-006)~~
【分类号】：TM712

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