The Experts below are selected from a list of 1884 Experts worldwide ranked by ideXlab platform

Kory W. Hedman - One of the best experts on this subject based on the ideXlab platform.

  • Enhanced Energy Management System With Corrective Transmission Switching Strategy—Part II: Results and Discussion
    IEEE Transactions on Power Systems, 2019
    Co-Authors: Kory W. Hedman
    Abstract:

    This paper presents a novel procedure for energy management system (EMS) that can utilize the flexibility in transmission networks in a practical way. With the proposed enhanced EMS procedure, the reliability benefits that are provided by corrective transmission switching (CTS) in real-time contingency analysis can be translated into significant cost savings in real-time Security-Constrained Economic Dispatch. Simulation results show that the congestion cost with consideration of CTS is largely reduced as CTS can relieve potential post-contingency network violations. The effects of integrating CTS in existing EMS procedure on markets are also analyzed. In conclusion, this two-part paper shows that CTS can achieve substantial reliability benefits, as well as significant cost savings.

  • Enhanced Energy Management System with Corrective Transmission Switching Strategy - Part II: Results and Discussion
    arXiv: Optimization and Control, 2018
    Co-Authors: Kory W. Hedman
    Abstract:

    This paper presents a novel procedure for energy management system (EMS) that can utilize the flexibility in transmission network in a practical way. With the proposed enhanced EMS procedure, the reliability benefits that are provided by corrective transmission switching (CTS) in real-time contingency analysis (RTCA) can be translated into significant cost savings in real-time Security-Constrained Economic Dispatch (RT SCED). Simulation results show the congestion cost with consideration of CTS is largely reduced as CTS can relieve potential post-contingency network violations. The effects of integrating CTS in existing EMS procedure on markets are also analyzed. In conclusion, this two-part paper shows that CTS can achieve substantial reliability benefits, as well as significant cost savings.

Hossein Sharifzadeh - One of the best experts on this subject based on the ideXlab platform.

  • Security constrained unit commitment of power systems by a new combinatorial solution strategy composed of enhanced harmony search algorithm and numerical optimization
    International Journal of Electrical Power & Energy Systems, 2013
    Co-Authors: Samiee, Nima Amjady, Hossein Sharifzadeh
    Abstract:

    Abstract In this paper, a new combinatorial solution strategy for security constrained unit commitment (SCUC) problem is presented. In the proposed combinatorial solution strategy, the unit states are determined by a new stochastic search method, which is an enhanced harmony search technique, and the security constrained Economic Dispatch problem is solved using an efficient nonlinear analytical solver based on numerical optimization. Moreover, the proposed solution strategy also includes a hybrid constraint handling method. The effectiveness of the proposed combinatorial solution strategy to solve the SCUC problem is shown on different test systems and compared with some of the most recently published research works in the area. These comparisons confirm the validity of the developed strategy.

Kwok W. Cheung - One of the best experts on this subject based on the ideXlab platform.

  • Integration of line switching in energy and market management systems
    2015 IEEE Eindhoven PowerTech, 2015
    Co-Authors: Kwok W. Cheung, Davis Hwang
    Abstract:

    Incorporating line switching as a part of security enhancement could more effectively alleviate overloads of branch equipment in system operations. In market operations, co-optimizing transmission topology and generation Dispatch could be a viable way to improve Economic efficiency. This paper discusses the integration of line switching in energy and market management systems (EMS/MMS) for control centers. Both a heuristic approach and an optimization-based approach are applied to a vertically integrated utility and a regional transmission organization, respectively. Both approaches lean on some heuristic rules and/or analytical techniques to reduce the candidate set of line switching for all practical purposes. Enhancement of the mathematical model for optimal transmission switching within the context of a Security-Constrained Economic Dispatch algorithm is discussed. Numerical results indicate the effectiveness of the proposed methods to combine heuristics with optimization.

  • Electricity Market Design: An Integrated Approach to Reliability Assurance
    Proceedings of the IEEE, 2005
    Co-Authors: J.h. Chow, W. De Mello, Kwok W. Cheung
    Abstract:

    System reliability is an integral part of a properly designed deregulated electricity market, even though wholesale energy prices are its most visible piece. This paper discusses the resources, collectively known as the ancillary services, in a power system for maintaining reliability. It then discusses an integrated approach in systematically determining and securing the needed ancillary services and system configuration across multiple time spans, culminating in the cooptimization of energy and ancillary services for Security-Constrained generator unit commitment in the day-ahead market and Security-Constrained Economic Dispatch of the generators in real-time operation. The paper also provides a summary of the ancillary services market in several U.S. power markets and proposes several technical issues for further discussion and research.

  • Standard market design for ISO New England wholesale electricity market: an overview
    2004 IEEE International Conference on Electric Utility Deregulation Restructuring and Power Technologies. Proceedings, 2004
    Co-Authors: Kwok W. Cheung
    Abstract:

    This paper discusses the standard market design (SMD) for ISO New England electricity market. SMD comprises a congestion management methodology for revealing and assigning costs of supplying electricity across limited transmission facilities and a two-part market settlement structure consisting of a "day-ahead" and a "day-of" settlement that allows for greater financial certainty to market participants. Day-ahead market, real-time market, and financial transmission rights (FTR) auction are the key market elements of SMD. Based on the problem of Security-Constrained Economic Dispatch, an extended LMP model with transmission loss consideration will be presented. Details of functional design for the multi-settlement system and the FTR auction system will be discussed.

  • Market based regulation for the PJM electricity market
    pica 2001. Innovative Computing for Power - Electric Energy Meets the Market. 22nd IEEE Power Engineering Society. International Conference on Power I, 1
    Co-Authors: A. Jayantilal, Kwok W. Cheung, P. Shamsollahi, F.s. Bresler
    Abstract:

    This paper describes the functional requirements, design and implementation of the PJM market based regulation (MBR) application. MBR provides the day-ahead and real-time functions to meet the regulation requirements for the next market-day through a process of competitive bidding and procurement. Regulation bids submitted by market participants are scheduled and Dispatched using a security constrained Economic Dispatch methodology that includes the various market rules. The MBR application simultaneously provides the PJM ISO with information for real-time regulation evaluation and Dispatch. The paper also describes the PJM regulation market results since inception.

Mingqiao Peng - One of the best experts on this subject based on the ideXlab platform.

  • Evaluation and application of wind power integration capacity in power grid on the basis of security constrained Economic Dispatch
    IEEE PES Innovative Smart Grid Technologies, 2012
    Co-Authors: Li Lili, Jian Geng, Qia Ding, Danlin Yang, Mingqiao Peng
    Abstract:

    Wind power generation brings new challenges to the security operation of power system due to its intermittency and uncontrollable. There are some special characters in China, such as large-scale, long distance transmission and lack of flexible regulating power. For short-term power Dispatching, it is an important issue to obtain the security limit of wind power integration capacity. This paper presents a novel algorithm for evaluate wind power integration capability in daily system operation based on Security-Constrained Economic Dispatch (SCED). Through objective conversion, a wind power integration capability optimization model is established, which can fully consider the regulation ability of traditional generation resources as well as the coordination and optimization of grid safety. The model is solved by commercial software CPLEX and the maximum wind power generation curve of all wind farms is obtained. Numerical simulations indicate the effectiveness of the proposed evaluate algorithm.

P. Somasundaram - One of the best experts on this subject based on the ideXlab platform.

  • Fuzzified Particle Swarm Optimization Algorithm for Multi-area Security Constrained Economic Dispatch
    Electric Power Components and Systems, 2011
    Co-Authors: P. Somasundaram, N. M. Jothi Swaroopan
    Abstract:

    Abstract This article presents a new computationally efficient fuzzified particle swarm optimization algorithm for solving the Security-Constrained multi-area Economic Dispatch of an interconnected power system. The core objective of the Security-Constrained multi-area Economic Dispatch is to determine the generation allocation of each committed unit in the system and the power exchange between areas so as to minimize the total generation cost without violating the tie-line constraint. The proposed fuzzified particle swarm optimization algorithm is based on the combined application of fuzzy logic strategy incorporated in the particle swarm optimization algorithm. The proposed method was tested on a system of three interconnected areas. The investigation reveals that the proposed method can provide an accurate solution with fast convergence and has the potential to be applied to other power system optimization problems.

  • APPLICATION OF TABU SEARCH ALGORITHM TO SECURITY CONSTRAINED Economic Dispatch
    2009
    Co-Authors: P. Somasundaram
    Abstract:

    This paper presents an algorithm for solving Security Constrained Economic Dispatch (SCED) problem through the application of Tabu Search (TS). The SCED problem is formulated with base case and contingency case line flow constraints, which are important for practical implementation. Two representative systems namely 66-bus [14] and 191-bus [15] Indian utility systems are taken for investigations. The SCED results obtained using TS are compared with those obtained using Genetic Algorithm (GA) and Evolutionary Programming (EP). The investigations reveal that the proposed TS algorithm is relatively simple, reliable and efficient and suitable for practical applications.

  • Hybrid algorithm based on EP and LP for security constrained Economic Dispatch problem
    Electric Power Systems Research, 2005
    Co-Authors: P. Somasundaram, R. Lakshmiramanan, K. Kuppusamy
    Abstract:

    This paper presents a new hybrid method for solving security constrained Economic Dispatch problem. The proposed method is developed in such a way that a simple evolutionary programming is applied as a base level search, which can give a good direction to the optimal global region and a local search linear programming is used as a fine tuning to determine the optimal solution. The hybrid approach outperforms the evolutionary programming based method and reduces the total computation time. A 10-bus and 66-bus Indian utility systems are considered to illustrate the effectiveness of the proposed method. The investigations reveal that the proposed method is suitable for practical utility systems.

  • Application of evolutionary programming to security constrained Economic Dispatch
    International Journal of Electrical Power & Energy Systems, 2005
    Co-Authors: P. Somasundaram, K. Kuppusamy
    Abstract:

    Abstract This paper presents an algorithm, for solving security constrained Economic Dispatch (SCED) problem, through the application of evolutionary programming (EP). The controllable system quantities in the base case state are optimized, to minimize some defined objective function, subject to the base case operating constraints as well as the contingency case security constraints. Two representative systems: 10-bus [10] and adapted IEEE 30-bus [20] systems are taken for investigations. The SCED results obtained using EP are compared, with those obtained using quadratic programming [Fan JY, Zhang L. Real-time Economic Dispatch withline flow and emission constrains using quadratic programming. IEEE Trans Power Syst 1998;13(2):320–5] and successive linear programming [Kuppusamy K. Successive liner programming methods for security-related optimization in power systems. India:PhD Thesis; 1981]. The investigations reveal that, the proposed algorithm is relatively simple, reliable, efficient and suitable for on-line applications.