Robust and coordinated tuning of power system stabiliser gains using sequential linear programming
Robust and coordinated tuning of power system stabiliser gains using sequential linear programming
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DOI：
10.1049/iet-gtd.2009.0669
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发表时间：
2010-08
影响因子：
2.5
通讯作者：
R. Jabr;B. Pal;N. Martins;J.C.R. Ferraz
中科院分区：
文献类型：
--
作者：
R. Jabr;B. Pal;N. Martins;J.C.R. Ferraz
本文提出一种基于线性规划的多变量根轨迹跟踪方法，用于协调电力系统稳定器的增益整定。稳定器的鲁棒性占在设计问题中，同时考虑状态空间表示和多变量根轨迹对应于不同的操作方案。所提出的技术计算PSS增益参数空间中的曲线，使得当PSS增益沿着此曲线移动到其最优值时，对应的多变量根轨迹的分支终止于复平面中的满意点处。增益参数空间中的曲线通过线性规划来计算，该线性规划连续地最小化不满意的特征值位置和满意的特征值位置之间的欧几里得距离。该设计方法在一个39节点的测试系统上进行了验证，该系统具有14种运行场景。对两种PSS结构的协调结果进行了比较，一种是由两个相位超前块组成的PSS结构，另一种是由两个相位超前块和一个相位滞后块组成的PSS结构。
This study presents a linear programming (LP)-based multivariable root locus following technique for coordinating the gain settings of power system stabilisers (PSSs). The stabiliser robustness is accounted for in the design problem by simultaneously considering the state-space representations and multivariable root loci corresponding to different operating scenarios. The proposed technique computes a curve in the PSS gain parameter space such that when the PSS gains move along this curve to their optimal values, the branches of the corresponding multivariable root loci terminate at satisfactory points in the complex plane. The curve in the gain parameter space is computed via a linear program that successively minimises the Euclidean distance between the unsatisfactory and satisfactory eigenvalue locations. The design method is demonstrated on a 39-bus test system with 14 operating scenarios. A comparison is carried out between the coordination results of two PSS structures, one involving two phase-lead blocks and the other comprised of two phase-lead blocks and a phase-lag block.