Structure in Power System Analysis and Control
电力系统分析与控制结构
基本信息
- 批准号:9610049
- 负责人:
- 金额:$ 18.85万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1997
- 资助国家:美国
- 起止时间:1997-06-15 至 2001-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
ECS-9610049 Zaborszky In previous work the mathematical structure of the large power system as differential-algebraic system with or without the presence of hard limits has been studied in the context of an overall taxonomy. Along with their mathematical structure, physical systems have a wide spread of physical structure ranging from unstructured to hierarchical or very strict structures. The large power system model has a very strong segmental (network) structure. The dynamic equations typically separate into segments (which are physically defined by the buses in the power system), tied together only through non-dynamic relations (in the network). This geographic structure becomes of great importance in questions related to control. In this project, along with completing certain aspects of the mathematical theory, the taxonomy theory will be studied for segmental systems in the context of control problems, specially in the control of power systems. In view of the power system's geographic structure many control problems can be addressed decentralized. For instance, the problem of stabilizing control can be formulated as tracking a moving target which has a single component for each segment and thus can be easily computed locally. The systemwide stability of such an observation decoupled control will be analyzed. The segmental structure of the power system also leads to various clustering approaches built on rudimentary clusters of observation decoupled single bus clusters. Clustered control schemes will be analyzed on the basis of the taxonomy theory. The convergence and accuracy of various control approaches will be studied and the most desirable approaches for various circumstances-such as fast, medium and slow control (tasks) will be sought. The fast control objectives are mostly connected to preserving the stability of the power system. We have formulated it as a problem of tracking a moving target vector. This objective readily breaks up into interconnected segmen tal problems and identifies the stable equilibrium point when the tracking is successful (note that it is not practical to identify the equilibrium on the time scale of the disturbances fact conveniently ignored in most of the literature). However, the equilibrium is found precisely at the end of successful tracking. This invites the design of effective approximate tracking schemes which lead in this case to precise results. It is important, however, to find such tracking schemes and establish precisely their convergence. This will be done in the project. The medium fast control for the problems of the automatic generation control (ACC) readily settles into a three layer segmented scheme both for the traditional AGC (equipment at individual buses, segments called Areas for individual power companies connected with tie lines and nationwide setting of desired frequency by NERC) and the new deregulated scheme (generating stations, national transmission company and distribution companies). Although needs are different, the structural similarity implies connections in the theory. These will be analyzed and the most desirable schemes sought. Clustering of the large system will be the basis of this work involving thorough and precise analysis and technique development. New taxonomy concepts such as observability region and controllability region within the state-parameter space will be defined and analyzed at the thoroughness and precision corresponding to our earlier Taxonomy work. The ongoing development of the power system away from local power companies and regulation connected AGC control to layers of generation, transmission and distribution companies based on a real time commodity trading nationally makes this proposed study quite important and potentially very useful. At present the final shape of the reorganized system which will eventually dictate the structure of its control needs is not yet emerging. Hence the flexibility of the taxonomy approach which can accommodate a grea t variety of needs and structure will make it an ideal vehicle for searching for the most desirable structures and objectives.
ECS-9610049 Zaborszky 在以前的工作中的数学结构的大型电力系统的微分代数系统的存在或不存在的硬限制已被研究的背景下,一个整体的分类。 沿着它们的数学结构,物理系统具有广泛的物理结构,从非结构化到层次结构或非常严格的结构。 大型电力系统模型具有很强的分段(网络)结构。 动态方程通常分为若干段(由电力系统中的母线物理定义),仅通过非动态关系(在网络中)联系在一起。 这种地理结构在与控制有关的问题上变得非常重要。 在这个项目中,沿着完成某些方面的数学理论,分类理论将研究分段系统的控制问题的背景下,特别是在电力系统的控制。 鉴于电力系统的地理结构,许多控制问题可以分散解决。 例如,稳定控制的问题可以用公式表示为跟踪一个移动目标,该目标对于每个段具有单个分量,因此可以容易地局部计算。 将分析这种观测解耦控制的全系统稳定性。 电力系统的分段结构也导致各种聚类方法建立在观察解耦单总线集群的基本集群上。 将在分类理论的基础上分析集群控制方案。 将研究各种控制方法的收敛性和准确性,并寻求各种情况下最理想的方法,如快速,中等和慢速控制(任务)。 快速控制的目标主要是保持电力系统的稳定性。 我们已经制定了一个问题,跟踪一个移动的目标向量。 这个目标很容易分解成相互关联的分段问题,并确定稳定的平衡点时,跟踪是成功的(注意,这是不实际的,以确定平衡的时间尺度上的干扰事实方便地忽略了在大多数文献)。 然而,在成功跟踪的末尾,恰好找到了平衡。 这就要求设计有效的近似跟踪方案,在这种情况下,导致精确的结果。 然而,重要的是要找到这样的跟踪计划,并准确地确定其收敛性。 这将在项目中完成。 针对自动发电控制(ACC)问题的中快速控制容易地解决为传统AGC(在各个母线上的设备、被称为与联络线连接的各个电力公司的区域的分段以及NERC的全国范围的期望频率设定)和新的解除管制方案(发电站、国家传输公司和配电公司)的三层分段方案。 虽然需求不同,但结构上的相似性意味着理论上的联系。 将对这些方案进行分析,并寻求最理想的方案。 大系统的聚类将是这项工作的基础,涉及彻底和精确的分析和技术开发。 新的分类概念,如状态参数空间内的可观测性区域和可控性区域将被定义和分析的彻底性和精度对应于我们早期的分类工作。 电力系统的持续发展远离地方电力公司和监管连接AGC控制层的发电,输电和配电公司的基础上,真实的时间商品交易的国家,使这项建议的研究相当重要,并可能非常有用。 目前,最终将决定其控制需求结构的重组系统的最终形状尚未出现。 因此,分类法的灵活性,可以适应各种各样的需求和结构,将使它成为一个理想的工具,寻找最理想的结构和目标。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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John Zaborszky其他文献
Optimal Partnership of Operator and Computer for Power System Restoration
- DOI:
10.1016/s1474-6670(17)51399-3 - 发表时间:
1990-08-01 - 期刊:
- 影响因子:
- 作者:
John Zaborszky;Garng Huang;P. Clelland;D. Fagnan - 通讯作者:
D. Fagnan
Clustering the bulk power system for the study of oscillations
- DOI:
10.1016/s1474-6670(17)35830-5 - 发表时间:
2003-06-01 - 期刊:
- 影响因子:
- 作者:
İstemihan Genç;John Zaborszky - 通讯作者:
John Zaborszky
John Zaborszky的其他文献
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{{ truncateString('John Zaborszky', 18)}}的其他基金
Exploring the Potentials of an All DC (ADC) Bulk Power System
探索全直流 (ADC) 大容量电源系统的潜力
- 批准号:
0114937 - 财政年份:2001
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
Collaborate Research: A Comprehensive Dynamic Theory for Security Analysis of the Large Electric Power System
合作研究:大电力系统安全分析的综合动态理论
- 批准号:
9305128 - 财政年份:1993
- 资助金额:
$ 18.85万 - 项目类别:
Continuing Grant
Feedback Control of Nonlinear and Singular Systems; U.S.-Italy Program
非线性和奇异系统的反馈控制;
- 批准号:
8519654 - 财政年份:1986
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
Expedited Award for Novel Research: A Rethinking of the Selective Protection Problem on the Basis of Up to Date Computer Guided Electric Power System Operation
新颖研究加急奖:基于最新计算机引导电力系统运行的选择性保护问题的重新思考
- 批准号:
8617535 - 财政年份:1986
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
Structure and Regulator Theory of Bilinear and Nonlinear Systems
双线性和非线性系统的结构和调节器理论
- 批准号:
8201554 - 财政年份:1982
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
Structure and Regulator Theory of Bilinear Systems
双线性系统的结构和调节器理论
- 批准号:
7902976 - 财政年份:1979
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
Theory of Bilinear and Nonlinear Systems
双线性和非线性系统理论
- 批准号:
7617175 - 财政年份:1976
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
Nonlinear Systems, Observers, Stability, Observability
非线性系统、观察者、稳定性、可观测性
- 批准号:
7509755 - 财政年份:1975
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
Studies of Principles For the All Digitally Controlled and Operated Power System
全数控电力系统原理研究
- 批准号:
7422964 - 财政年份:1975
- 资助金额:
$ 18.85万 - 项目类别:
Continuing Grant
Learning Estimation and Control For Linear and Bilinear Systems
线性和双线性系统的学习估计和控制
- 批准号:
7418560 - 财政年份:1974
- 资助金额:
$ 18.85万 - 项目类别:
Standard Grant
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