Direct Stability Assessments of Network-Preserving Power System Models: Analysis, Foundations and Methodology

保网电力系统模型的直接稳定性评估：分析、基础和方法

• 批准号: 9505620
• 负责人: Hsiao-Dong Chiang
• 金额: $ 26.71万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9505620&HistoricalAwards=false
• 关键词: Direct; Stability; Assessments; Network; Preserving

9505620 Chiang Despite its significant progress, the direct method still suffers from several limitations which prevent it from both off- line and on-line applications. These limitations may be classified into: modeling limitation, scenario limitation, function limitation and accuracy limitation. These limitations must be removed or significantly improved before direct methods can be actually used by power utilities. A major limitation of direct methods in the past has been the simplicity of the models used in various direct method implementations in software programs. Much of this limitation will be overcome by the work presented in this proposal. The second limitation has been that direct methods apply to first swing instability only. The proposed project will enhance direct methods in such a way to provide useful information for identifying multi-swing unstable cases. A third limitation has been the accuracy and reliability of direct methods. This limitation will be significantly improved by the work (BCU method) to be developed in this research for network-preserving power system models. This proposal seeks, from both computational and theoretical viewpoints, to remove or improve much of the limitations in direct methods and make them viable for on-line direct stability analysis of practical large-scale power systems ***

小行星9505620 尽管直接法取得了显著的进步，但它仍然受到一些限制，这些限制阻止了它的离线和在线应用。 这些限制可以分为：建模限制、场景限制、功能限制和精度限制。 在电力公司实际使用直接方法之前，必须消除或显著改善这些限制。 过去直接方法的一个主要限制是在软件程序中的各种直接方法实现中使用的模型的简单性。 本提案中提出的工作将在很大程度上克服这一限制。 第二个限制是直接法只适用于第一次摆动不稳定性。 拟议的项目将加强直接方法，以便为确定多摆动不稳定情况提供有用的信息。 第三个限制是直接方法的准确性和可靠性。 这一限制将显着改善的工作（BCU方法）在这项研究中开发的网络保持电力系统模型。 本文从计算和理论两个方面，消除或改进了直接法的许多局限性，使之适用于实际大规模电力系统的在线直接稳定分析。