基于内点非线性规划的故障切除时间计算  

Calculation of Contingency Clearing Time Based on Interior Point Nonlinear Programming

作　　者：阳育德[1] 韦化[1] 刘辉[1] 

机构地区：[1]广西大学电气工程学院,广西壮族自治区南宁市530004

出　　处：《中国电机工程学报》2006年第15期1-6,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50467001)~~

摘　　要：基于插值或曲线拟合方法,以最大切除时间为目标,系统中各发电机转子运动方程均以隐式梯形积分规则差分化并作为等式约束,转子相对角度极限为不等式约束,据此建立了一个完全基于时域仿真及数值计算,并可精确求解给定功角极限下电力系统故障后最大切除时间的非线性规划模型,同时导出求解该模型的现代内点算法。新模型不必进行复杂的数学研究和推导,结构非常简洁、直观,原理清晰明了,求解精度高。同时,由于新模型和方法完全基于时域仿真和数值计算,可以不受限制的采用任一种发电机及负荷模型,适用性强,易于实用化。Based on interpolation formula or curve fitting and under special relating angle limitation, maximum clearing time to be target function, all swing equations in power system will be converted into numerical equivalent algebraic equations by using the implicit trapezoidal rule and are involved in equality constrains set. All rotors＇ angles related to COI are used to be inequality constrains, This paper presents a novel nonlinear programming module that can calculate maximum clearing time accurately. An interior point algorithm for solving the proposed module is derived, too. Proposed model and algorithm don＇t have to research or derive a lot of complex theory and mathematics formulas, and they possess significant simplifying structure, excellent convergence property and can be implement or program easily. Based on time domain emulating and numerical calculation completely, proposed model and algorithm are suitable for any generator and load modules.

关 键 词：电力系统 切除时间 暂态稳定 非线性规划 现代内点算法 

分 类 号：TM712[电气工程—电力系统及自动化]