基于伪谱法的电力系统暂态稳定紧急控制  

Transient stability constrained emergency control based on pseudo-spectral method for power system

作　　者：冯军基[1] 耿光超[1] 王云[1] 江全元[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电力自动化设备》2015年第9期68-73,173,共7页Electric Power Automation Equipment

基　　金：国家高技术研究发展计划(863计划)资助项目(2013AA050104)~~

摘　　要：电力系统暂态稳定紧急控制问题可以建模为含微分代数方程组约束的最优控制问题。伪谱法作为全局配置方法,相比于有限元正交配置法等离散方法,具有较高的精度。利用伪谱法处理最优控制问题中的微分代数方程组约束,并与传统的联立方法进行对比。在此基础上,引入细粒度并行,加快问题的求解速度。算例验证表明,在计算切机切负荷紧急控制方案时,采用所提方法可以利用较少的离散点达到理想的求解精度。The transient stability constrained emergency control problem can be modelled as an optimal control problem containing the constraints of DAE（Differential Algebraic Equations）. As a global configuration method,the pseudo-spectral method has higher accuracy than the discrete methods,such as the orthogonal collocation on finite elements method,which is adopted to deal with the DAE constraints in the optimal control problem. It is compared with the traditional simultaneous equations method. The parallel computation with fine granularity is applied to speed up the solving process. Case verification shows that,to achieve an ideal solving accuracy of generator / load shedding control scheme,the proposed method needs less discrete points.

关 键 词：电力系统 暂态 稳定 紧急控制 伪谱法 内点法 并行计算 

分 类 号：TM712[电气工程—电力系统及自动化]