当前位置: X-MOL 学术IEEE Trans. Power Syst. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Cross-Gramian Model Reduction Approach for Tuning Power System Stabilizers in Large Power Networks
IEEE Transactions on Power Systems ( IF 6.5 ) Pub Date : 2020-05-01 , DOI: 10.1109/tpwrs.2019.2924495
Sudipta Ghosh , Younes J. Isbeih , Mohamed Shawky El Moursi , Ehab F. El-Saadany

Poorly damped inter-area modes of oscillations represent a major concern to power system operation since they detain the power transfer capability of transmission networks. This situation becomes more stringent as the tie-lines are heavily stressed and/or large amounts of renewable energy resources are installed. To overcome this issue, a detailed mathematical model is proposed in this paper to reduce the linearized model of a large power system using the cross-Gramian technique. The presented approach divides the system into a study area which contains one generation unit with installed power system stabilizer (PSS) and an external one which comprises the rest of generation units in the system. Model order reduction is only applied to the external area with the objective of maintaining the characteristics of the original model. Meanwhile, the dynamics of the study area are preserved to provide the required damping through the designed PSS. In addition, an online tuning methodology is also presented to provide robust damping performance in response to changes in the system operating conditions. The deployed cross-Gramian model order reduction alleviates the computational burden and time associated with the online PSS tuning when original power system models are used. The effectiveness of the proposed approach is tested using the New-England 39-bus system in addition to another practical system which resembles the Northern Regional Power Grid India test system.

中文翻译:

大型电网中电力系统稳定器调谐的跨格拉姆模型约简方法

低阻尼区域间振荡模式是电力系统运行的一个主要问题,因为它们会限制输电网络的电力传输能力。由于联络线受到很大压力和/或安装了大量可再生能源,这种情况变得更加严峻。为了克服这个问题,本文提出了一个详细的数学模型,以使用交叉格拉姆技术对大型电力系统的线性化模型进行简化。所提出的方法将系统划分为一个研究区域,其中包含一个安装有电力系统稳定器 (PSS) 的发电机组和一个包含系统中其余发电机组的外部发电机组。模型降阶仅应用于外部区域,目的是保持原始模型的特征。同时,研究区域的动力学被保留,以通过设计的 PSS 提供所需的阻尼。此外,还提出了一种在线调谐方法,以响应系统运行条件的变化提供稳健的阻尼性能。当使用原始电力系统模型时,部署的跨 Gramian 模型阶数减少减轻了与在线 PSS 调整相关的计算负担和时间。除了另一个类似于印度北部区域电网测试系统的实用系统外,还使用新英格兰 39 总线系统测试了所提出方法的有效性。还提出了一种在线调谐方法,以响应系统运行条件的变化提供强大的阻尼性能。当使用原始电力系统模型时,部署的跨 Gramian 模型阶数减少减轻了与在线 PSS 调整相关的计算负担和时间。除了另一个类似于印度北部区域电网测试系统的实用系统外,还使用新英格兰 39 总线系统测试了所提出方法的有效性。还提出了一种在线调谐方法,以响应系统运行条件的变化提供强大的阻尼性能。当使用原始电力系统模型时,部署的跨 Gramian 模型阶数减少减轻了与在线 PSS 调整相关的计算负担和时间。除了另一个类似于印度北部区域电网测试系统的实用系统外,还使用新英格兰 39 总线系统测试了所提出方法的有效性。
更新日期:2020-05-01
down
wechat
bug