On Line Dynamic Security Analysis of Power Systems

9530679因为对电力系统的安全性进行定期分析是为了确保电力系统抵御突发事件的能力。这种在线分析原则上需要检查数百种扰动对电力系统的影响。检查电力系统扰动后的稳态是否发生这些意外情况只需要处理代数方程(尽管有大量的非线性)，而这种静态安全分析(SSA)现在通常在线完成。然而，检查扰动过程中的不稳定性除了需要处理代数方程外，还需要处理非线性微分方程组，而这种动态安全分析(DSA)所需的计算量大约比SSA高三个数量级。因此，尽管已经实现了实验原型，但在线DSA仍处于开发阶段。这项建议是为了审查这一问题的重要方面，并为解决这一问题制定新的办法。***

9530679 Bose The periodic analysis of the security of a power system is done to ensure the ability of the power system to withstand contingencies. Such on-line analysis requires, in principle, the checking of the effects of hundreds of disturbances on the power system. The checking of the post-disturbance steady state of the power system for these contingencies requires only the handling of algebraic equations (albeit in large numbers and with nonlinearities), and such static security analysis (SSA) is now routinely done on-line. However, checking for instabilities during the disturbance itself requires the handling of nonlinear differential equations in addition to the algebraic equations, and the computation required for this dynamic security analysis (DSA) is about three magnitudes higher than that for the SSA. Thus, on-line DSA is still in its development stage although experimental prototypes have been implemented. This proposal is for examing the important aspects of this problem and developing new approaches for its solution. ***