检索结果-内蒙古大学图书馆

IEEE Power and Energy Society General Meeting

作者： Marija D. Ilic Departments of Electrical and Computer Engineering (ECE) and Engineering Public Policy (EPP) at Carnegie Mellon University

ISBN: (纸本)9781457710001

This paper recognizes that short-run marginal cost-based electricity pricing must be revisited. This is primarily because the effects of information asymmetries and diverse technical characteristics and preferences in a system with very little storage are no longer second order. We review three possible implementations of electricity markets that account for these effects. These are fully centralized unit commitment, distributed unit commitment and a hybrid unit commitment. The locational marginal prices (LMPs) obtained are quite different than the short run marginal costs of the power plants. A major recommendation is made that these differences and effects be accounted for as policy is designed for managing uncertainties and inter-temporal constraints and for valuing their effects on pricing. In particular, design of IT-enabled rules, rights and responsibilities (3Rs) for managing and valuing the effects of uncertainties is suggested to be essential. Possible 3Rs for supporting interactive integration of wind power and adaptive load management in systems with large wind penetration are used to illustrate proof-of-concept implementation of such systems without reliability problems. We recommend to pursue studies of the 3Rs impact on the performance of real-world electric energy systems.

关键词： Uncertainty Reliability Wind power generation Electricity supply industry Electricity Decision making

来源：评论

学校读者我要写书评

暂无评论

Distribution Pricing and Tariff Structure: The Ongoing US Reforms

Distribution Pricing and Tariff Structure: The Ongoing US Re...

引用

IEEE Power and Energy Society General Meeting

作者： Marija D. Ilic Jonathan Donadee Departments of Electrical and Computer Engineering (ECE) and Engineering Public Policy (EPP) at Carnegie Mellon University Department of Electrical and Computer Engineering (ECE) at Carnegie Mellon University

ISBN: (纸本)9781457710001

It is hard to report at present any streamlined efforts toward reforming distribution pricing and tariffs to better reflect the technological changes and their value. In particular, at present there is no direct relation between the demand-response commitments to participating in peak load shaving, direct load control programs, on one side, and the prices reflecting their value. As a rule, the signals reflecting the value of the technologies underlying these functionalities are not in place.

关键词： Reforming customs tariff Pricing maximum loads Prices Program control signals load control technological change Shavings

来源：评论

学校读者我要写书评

暂无评论

ESICM LIVES 2016: part one Milan, Italy. 1-5 October 2016 Abstracts

引用

INTENSIVE CARE MEDICINE EXPERIMENTAL 2016年第SUPPL 1期4卷 1-1页

作者： [Anonymous] Academic Medical Center University of Amsterdam Amsterdam Netherlands UMCU Utrecht Netherlands Autonomous University of Barcelona Barcelona Spain Hospital São Francisco Xavier Lisbon Portugal CHU Henri Mondor Medical ICU Créteil France Université de Paris Est-Créteil Groupe de Recherche Clinique CARMAS Créteil France Hôpital Tenon APHP Medical and Surgical ICU Paris France Université Paris Diderot Sorbonne Paris Cité UMR 1153 Paris France Interdepartmental Division of Critical Care University of Toronto Toronto Canada University Health Network University of Toronto Critical Care Medicine Toronto Canada University of Milan - Bicocca Health Sciences School of Medicine and Surgery Monza Italy St Michael’s Hospital University of Toronto Anesthesia Toronto Canada CHU d’Angers Medical ICU Angers France Interdepartmental Division of Critical Care University of Toronto Saint Michael’s Hospital and Keenan Research Centre Toronto Canada University of Birmingham Institute for Inflammation and Ageing Birmingham UK University of Sheffield Mathematics and Statistics Help Centre Sheffield UK Heart of England NHS Foundation Trust Intensive Care Medicine Birmingham UK Department of Surgery University Hospitals Birmingham NHS Trust Birmingham UK University Hospitals Birmingham NHS Trust Anaesthesia and Critical Care Medicine Birmingham UK Queen’s University of Belfast Wellcome-Wolfson Institute for Experimental Medicine Belfast UK Royal Victoria Hospital Intensive Care Medicine Belfast UK University of Warwick Warwick Clinical Trials Unit Coventry UK University of Bari ‘Aldo Moro’ Bari Italy Hospital Israelita Albert Einstein São Paulo Brazil Mayo Clinic Jacksonville USA Mahidol University Faculty of Tropical Medicine Bangkok Thailand University Medical Center Utrecht Intensive Care Utrecht Netherlands University Medical Center Utrecht Julius Center for Health Sciences and Primary Care Utrecht Netherlands Academic Medical Center University of Amste

来源：评论

学校读者我要写书评

暂无评论

The Complexity of Voltage and Reactive Power Dispatch in Control Centers: From Analysis to On-Line Decision Making

The Complexity of Voltage and Reactive Power Dispatch in Con...

引用

IEEE Power and Energy Society General Meeting

作者： Marija D. Ilic Jeffrey H. Lang Departments of Electrical and Computer Engineering (ECE) and Engineering Public Policy (EPP) at Carnegie Mellon University Electrical Engineering and Computer Science (EECS) Department at MIT

ISBN: (纸本)9781457710001

This paper describes the need for on-line decision making in support of reliable, clean and efficient operation of future electric energy systems. This operation will be critically dependent on the systematic dispatch of available resources ranging across real power generation and voltage controllable G&T&D equipment. The emphasis in this paper is on the role of on-line voltage dispatch. An extended AC Optimal Power Flow (AC XOPF) is introduced for computing decisions on-line. It is shown how this software enables optimization of technical and economic decisions in quantifiable ways. Focus then turns to experience with large system studies. It is observed that on-line dispatch of a variety of controllable equipment over the broad range of system conditions is becoming critical during both normal and contingency conditions.

关键词： Extended AC Optimal Power Flow (AC-XOPF) Loss Minimization Efficiency Reactive Power Reserve Smart Grids Smart grids VOLTAGE Dispatching IN-LINE Power production Power dispatch Control centres efficient functioning Complexity contingency range measurement system

来源：评论

学校读者我要写书评

暂无评论

Phasor Measurement Units Placement for Power System State Estimation: A Greedy Approach

Phasor Measurement Units Placement for Power System State Es...

引用

IEEE Power and Energy Society General Meeting

作者： Qiao Li Rohit Negi Marija D. Ilic Department of Electrical and Computer Engineering Carnegie Mellon University Department of Electrical and Computer Engineering and Engineering and Public Policy

ISBN: (纸本)9781457710001

This paper considers the placement of synchronized Phasor Measurement Units (PMUs) in power systems to improve state estimation results. Since currently the number of PMUs deployed in the power system is far away from being sufficient achieve full system observability, one has to install the PMUs on a carefully selected subset of buses, such that the state estimation error is minimized. In this paper, we formulate the optimal PMU placement problem as an optimal experiment design problem, with a class of well-known optimality criteria, which are studied in the statistics literature. Since it has been shown that the optimal experiment design is NP-hard, we consider efficient suboptimal PMU placement algorithms. In particular, we show that the design criteria are usually related to a key property, submodularity, which often allows a greedy algorithm to achieve good approximation ratio. Specifically, we show that for typical power systems, a greedy PMU placement algorithm achieves at least 63% of the optimal reduction in total variance. The performance of the greedy PMU placement algorithms are further verified by simulation results.

关键词： Phasor measurement units (PMUs) Power systems State estimation Optimal experiment design Submodular functions Greedy algorithm Phasor measurement units power systems State estimation greedy algorithm power system state estimation Experimental Design placement greedy method DESIGN CRITERIA

来源：评论

学校读者我要写书评

暂无评论

Small signal stability and centralized control design of modern distribution systems

Small signal stability and centralized control design of mod...

引用

Annual North-American Power Symposium

作者： Masoud Honarvar Nazari Electrical & Computer Engineering and Engineering & Public Policy Carnegie Mellon University Pittsburgh USA

This paper investigates small signal stability and designing advanced centralized control to enhance robustness and dynamic performance of a modern distribution system with high penetration of distributed generators (DG). The paper mainly concerns comparison of classical, H 2 and H ∞ control strategies on system stability. The target performance is to satisfy stability of the system and improve nominal performance of DGs. Therefore, first we design a base controller for the system using classic control. Then, H 2 and H ∞ control systems are designed in order to warrant both nominal stability and dynamic performance of the system. Finally, the results of three control strategies are compared and the general findings of the paper are discussed.

关键词： Centralized control Generators Eigenvalues and eigenfunctions Power generation Stability analysis Fuels

来源：评论

学校读者我要写书评

暂无评论

Dynamic stability and control design of modern electric energy systems with large penetration of distributed generators

Dynamic stability and control design of modern electric ener...

引用

2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010

作者： Nazari, Masoud Honarvar Ilic, Marija Lopes, J.A. Peças Carnegie Mellon University Pittsburgh PA United States Electrical Engineering Department Porto University Portugal Electrical and Computer Engineering and Engineering and Public Policy Departments Portugal Control of Future Electricity Network Operations Faculty of Technology Policy and Management Delft University of Technology Delft Netherlands Department of Electrical Engineering Faculty of Engineering University of Porto Portugal Portugal

ISBN: (纸本)9781424474677

This paper investigates dynamic stability and control design of modern electric energy systems as many MW-scale distributed generators (DG) of various types are deployed in the distribution side of electric systems. The paper is mainly concerned about small-signal frequency stability of distribution systems with decentralized or centralized control systems. The Gerschgorin Circle Theory and Hicks Stability Theory are used for verifying sufficient conditions for small-signal stability. The paper also discusses about designing advanced enhancing robustness methods to ensure both safety and stability of modern distribution systems. Finally, the paper closes with a discussion of policies needed to support large penetration of DG units in distribution systems to ensure safety and robustness of the system. ©2010 IEEE.

关键词： Distributed power generation

来源：评论

学校读者我要写书评

暂无评论

Transforming supervisory control and data acquisition (SCADA) into Dynamic Monitoring and Decision Systems (DYMONDS): The missing link in smart grids

Transforming supervisory control and data acquisition (SCADA...

引用

IEEE General Meeting Power& Energy Society

作者： Marija Ilić Electrical and Computer Engineering (ECE) and Engineering and Public Policy (EPP) Departments Carnegie Mellon University Pittsburgh USA

In this paper we describe an effort which is under way at carnegie Mellon University (CMU) in the Electric Energy Systems Group (EESG). We refer to this effort as the Dynamic Monitoring and Decision Systems (DYMONDS) initiative. Its objective is to develop an Information Technology (IT)-enabled framework in support of sustainable evolution of today's electric power systems into future energy systems capable of meeting dynamically evolving complex tradeoffs of business, societal and energy service users' needs both short-term and very long-term.

关键词： Industries Decision making Systematics Security Biological system modeling Reliability Monitoring

来源：评论

学校读者我要写书评

暂无评论

Adaptive Load Management (ALM) in electric power systems

Adaptive Load Management (ALM) in electric power systems

引用

2010 International Conference on Networking, Sensing and Control, ICNSC 2010

作者： Joo, Jhi-Young Ilić, Marija D. Department of Electrical and Computer Engineering Carnegie Mellon University Pittsburgh PA 15213 United States Department of Engineering and Public Policy Carnegie Mellon University Pittsburgh PA 15213 United States Delft University of Technology Netherlands

ISBN: (纸本)9781424464531

In this work, we propose a multi-layered adaptive load management (ALM) system capable of integrating largescale demand response in electric power systems efficiently and reliably. Electric power systems can be seen as a composition of multiple subsystems: power producers, load aggregators/utilities, end-users, etc. Focusing on the demand side of the system, we decompose the whole power system into three layers: the primary layer at the lowest level consisting of end-users of electric energy, the secondary layer or load aggregators that aggregate these endusers and provide service to them, and the tertiary level or the system/market operator at the highest level that incorporates and optimizes the objectives of the system as a whole. We pose the ALM problem as the problem of decomposing a complex network system using Lagrange decomposition techniques. Given the recent changes in electric energy systems, we propose that including more information from demand side helps improve the system-wide optimization. This is done by signaling a demand function, i.e. optimal energy use as a function of electricity price in place of a single point of a Lagrange multiplier, from the end-users at the primary layer to the higher layers. We provide a formulation of the system's decomposition problems of this multi-layered multi-directional decision making and information exchange. Our novel contribution will be showing that exchanging sensitivities of Lagrange coefficients instead of point-wise values of price data is essential for having a converging interactive information exchange within at the rate needed in physical power systems without storage. We identify open questions and plan for our future work. ©2010 IEEE.

关键词： Decision making

来源：评论

学校读者我要写书评

暂无评论

Toward PMU-based robust automatic voltage control (AVC) and automatic flow control (AFC)

Toward PMU-based robust automatic voltage control (AVC) and ...

引用

IEEE General Meeting Power& Energy Society

作者： Zhijian Liu Marija D. Ilić Electrical and Computer Engineering and Engineering and Public Policy Departments Delft University of Technnology Netherlands Department of Electrical and Computer Engineering Carnegie Mellon University Pittsburgh PA USA Carnegie Mellon University Pittsburgh PA Electrical and Computer Engineering and Engineering and Public Policy Departments Delft University of Technology Delft The Netherlands

This paper is motivated by the need to automate adjustments of deviations in key output variables from their scheduled values. In particular, it is important to maintain load voltages within their pre-specified limits in response to many disturbances, for example load power factor deviations. Similarly, it is important to regulate real power line flows to within their pre-specified limits as disturbances around scheduled real power generation dispatch take place. Such automation is a feasible goal since the PMUs could provide accurate and fast sensing of key output variables of interest. Given the number of PMUs, the selection of best locations of PMUs and the control design based on these measurements becomes an engineering design problem. In this paper we provide a problem formulation for a robust Automated Voltage Control (AVC) and Automated Flow Control (AFC) design based on selecting the best locations for placing the PMUs. The AVC and AFC designs are illustrated using a small 5-bus example first. This is followed by illustrating potential performance of such design on an equivalent NPCC 36-bus system. The results indicate that the (N-1) reliability criteria can be met by combining the economic dispatch for scheduling resources given demand forecast, and by relying on an automated feedback to ensure that voltage and line flow deviations remain within the pre-specified limits in between scheduling intervals. This is done without having to know the exact location and magnitude of disturbances.

关键词： Automatic voltage control Reactive power Phasor measurement units Clustering algorithms Voltage measurement Generators

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：