电力系统自动化2012，Vol.36Issue(17)：8-14,7.
基于阻尼比的小干扰安全域多项式近似边界及其可信域
Polynomial Approximation of Damping-ratio-based Small-signal Security Region Boundaries and Its Credible Region
摘要
Abstract
A polynomial approximation method is proposed to construct an analytical expression of the boundaries of the damping-ratio-based small-signal security region（D-SSSR） by using the implicit function approach.Because this method gives the explicit polynomial expression,it has broad perspectives in applications.This method establishes the calculation model of the D-SSSR boundary by rotating the coordinate axis of the traditional small-signal security region（SSSR） boundary model.Then,the calculation of the coefficients of the polynomial approximation can be converted into the problem of solving a group of linear equations by using the implicit function approach.Further more,in order to handle the problem of local validity due to the polynomial approximation,an optimization formula is proposed to estimate the credible region of the approximation with a given accuracy.The correctness and effectiveness of the proposed methods are verified through the case studies on IEEE 118-bus system.关键词
小干扰/安全域/阻尼比/多项式近似/可信域Key words
small signal/security region/damping ratio/polynomial approximation/credible region分类
信息技术与安全科学引用本文复制引用
杨素,刘锋,梅生伟,章德..基于阻尼比的小干扰安全域多项式近似边界及其可信域[J].电力系统自动化,2012,36(17):8-14,7.基金项目
国家自然科学基金资助项目 （）
