IEEE Transactions on Power Systems

Volume 10 Issue 1 • Feb. 1995

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Displaying Results 1 - 25 of 67
  • Bibliography on load models for power flow and dynamic performance simulation

    Publication Year: 1995, Page(s):523 - 538
    Cited by:  Papers (137)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (740 KB)

    This broad-based bibliography on load modeling papers complements the IEEE Task Force paper analyzing and organizing standardized load models. Papers listed are categorized based on the applications of the load models discussed. A set of tables supplements the paper categories by illustrating load models presented in multiple papers and generalized models from which other models are derived. These... View full abstract»

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  • Predicting shaft torque amplification

    Publication Year: 1995, Page(s):407 - 412
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Shaft torque amplification (STA) is the form of subsynchronous resonance (SSR) characterized by the higher system-model complexity and computational requirements its simulation, normally in a time-domain environment, demands. A multi-modal approach drawing the turbogenerator torsional response to electrical torque impulses applied to the machine air-gap is introduced in this article as an alternat... View full abstract»

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  • APR: a geographic information system based primary router for underground residential distribution design

    Publication Year: 1995, Page(s):400 - 406
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    This paper presents an automated tool for optimizing the routing of primary cables in underground residential distribution systems (URD). Although initially developed as one of the modules in Puget Sound Power and Light Co.'s automated electrical plant design program, Automated Primary Router (APR) can also be used in standalone mode. APR, implemented in a geographic information system (GIS)-based... View full abstract»

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  • A linear model of voltage limited transmission interface constraints

    Publication Year: 1995, Page(s):476 - 482
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    A linear model of voltage limited transmission interface constraints is developed. The solution is a trade-off among local generation, transmission expansion, and reactive support equipment. With specified reliability criteria, network sensitivity parameters are calculated for a model system. The sensitivity of the optimal choice to economic factors is illustrated. This model illustrates in a simp... View full abstract»

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  • A student design project to improve power quality for a commercial facility

    Publication Year: 1995, Page(s):3 - 10
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    A recent paper (see ibid., vol.7, no.4, p.1550-8, 1992) reported on the success of industry-sponsored student projects to promote power quality education. One such project, sponsored by BCM Engineers in Plymouth Meeting, PA, was entitled “Power Quality Survey of a Commercial System.” The results of the survey confirmed the suspicion that power line disturbances (i.e., normal-mode and c... View full abstract»

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  • ADSM-an automated distribution system modeling tool for engineering analyses

    Publication Year: 1995, Page(s):393 - 399
    Cited by:  Papers (67)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    Designing and operating the distribution system efficiently and economically requires distribution engineers to perform various analytical studies frequently. The system models for these analyses are derived from the information residing in diverse utility databases. One major problem in utilizing these databases is the data mismatch due to different software specifications and hardware platforms.... View full abstract»

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  • The generalized unit commitment problem

    Publication Year: 1995, Page(s):465 - 475
    Cited by:  Papers (152)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    The authors formulate a generalized version of the unit commitment problem that can treat minimum up- and down-time constraints, power flow constraints, line flow limits, voltage limits, reserve constraints, ramp limits, and total fuel and energy limits on hydro and thermal power generating units. They propose an algorithm for this problem, based on Lagrangian decomposition, and demonstrate the al... View full abstract»

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  • Computation of a practical method to restore power flow solvability

    Publication Year: 1995, Page(s):280 - 287
    Cited by:  Papers (69)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    As power systems become more heavily loaded, system operation will be increasingly constrained by contingent cases where the power flow equations have no real solutions. Since such cases often represent the most severe threat to power system operation, it is critical that a computationally efficient method be developed to provide optimal control recommendations to mitigate these cases. Such an alg... View full abstract»

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  • State variable description of dynamic load models in electrical power system analysis

    Publication Year: 1995, Page(s):149 - 157
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    This paper relates to methods for the description of power system dynamic load models. Two classes of descriptive methods are discussed: description using state variables as descriptive variables (SD: state variable description); and description using power and voltage as descriptive variables (ID: input/output description). First, ID and SD are compared, and the advantages of SD in many types of ... View full abstract»

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  • Evaluating risk management strategies in resource planning

    Publication Year: 1995, Page(s):420 - 426
    Cited by:  Papers (27)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    This paper discusses the evaluation of risk management strategies as a part of integrated resource planning. Value- and scope-related uncertainties can be addressed during the process of planning, but uncertainties in the operating environment require technical analysis within planning models. Flexibility and robustness are two key classes of strategies for managing the risk posed by these uncerta... View full abstract»

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  • Decentralized planning of hydroelectric power systems

    Publication Year: 1995, Page(s):492 - 498
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    This paper discusses the application of marginal cost concepts to the expansion planning of hydroelectric systems. It is shown that the remuneration of hydroelectric plants should not be based on their energy production, as this leads to excessive revenues for the plant owner, and distorts the dimensioning of upstream reservoirs. In order to produce the adequate economic signals, it is necessary t... View full abstract»

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  • The Harmonic Domain. A frame of reference for power system harmonic analysis

    Publication Year: 1995, Page(s):433 - 440
    Cited by:  Papers (59)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    The Harmonic Domain is a general frame of reference for power system analysis in the steady state which models the coupling between phases and between harmonics. In this frame of reference the nonlinear components, converted into harmonic Norton equivalents, are combined with the rest of the system and solved iteratively by the Newton-Raphson technique. This paper describes the structure of the ne... View full abstract»

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  • An efficient and robust eigenvalue method for small-signal stability assessment in parallel computers

    Publication Year: 1995, Page(s):506 - 511
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    Small signal stability analysis of interconnected power systems is performed through the partial computation of the eigenvalues/eigenvectors of very large matrices. Parallel processing has already been efficiently used in this analysis. In this paper, a parallel version of the bi-iteration method and of a new hybrid method specially developed for parallel processing are introduced and their perfor... View full abstract»

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  • Distribution system state estimation

    Publication Year: 1995, Page(s):229 - 240
    Cited by:  Papers (189)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    A three-phase distribution system state estimation algorithm is proposed in this paper. The normal equation method is used to compute the real-time states of distribution systems modeled by their actual a-b-c phases. A current based formulation is introduced and compared with other formulations. Observability analysis for the proposed distribution system state estimation is discussed. Test results... View full abstract»

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  • Clarifications of the BCU method for transient stability analysis

    Publication Year: 1995, Page(s):210 - 219
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Energy function methods have been studied for many years, and have been applied to practical power system stability analysis problems of multi-machine power systems. Developments in real-time power system monitoring suggest that dynamic events can be monitored at the power system control centers, and naturally the energy function methods were tried as real-time stability prediction tools. However,... View full abstract»

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  • Tie line utilization during power system restoration

    Publication Year: 1995, Page(s):192 - 199
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    This paper identifies some of the critical roles of tie lines during power system restoration. Based on these roles, a systematic approach is developed to evaluate the impact of the availability of tie line assistance on restoration. Using this approach, a tie line expert system module has also been developed to supplement the previously developed EPRI restoration expert system (RES). The enhanced... View full abstract»

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  • Object-oriented on-line network analysis

    Publication Year: 1995, Page(s):125 - 132
    Cited by:  Papers (37)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Object-oriented programming has gained widespread acceptance, as its advantages of flexibility and ease of maintenance have been recognized. In power systems analysis, its use in developing graphical user interfaces and database managers have become quite popular. Object-oriented numerical applications, However, pose an interesting problem because solution algorithms often require the manipulation... View full abstract»

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  • Statistical analysis of load behavior parameters at four major loads

    Publication Year: 1995, Page(s):387 - 392
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    This paper describes field experience with a measurement system, which has been used to monitor the load behavior of four major loads at 230 kV level during the last 3 years. A statistical analysis of static load model parameters, estimated from 2768 snap shots of voltage perturbations is presented. Most of the perturbations are between 1% and 4%. However, 22 perturbations with voltage variations ... View full abstract»

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  • Rotor heating as an indicator of system voltage instability

    Publication Year: 1995, Page(s):175 - 181
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Voltage stability hinges on the continuing control of the total power system's supply and demand of reactive power within the overall transmission, subtransmission and distribution networks which connects the power stations to the consumers. This is complicated by the elements interspersed within this extensive network that both supply and consume reactive power. Extensive collapses have followed ... View full abstract»

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  • A model for the synchronous machine using frequency response measurements

    Publication Year: 1995, Page(s):457 - 464
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    This paper presents new techniques to improve the accuracy and velocity for the modeling of synchronous machines in stability and transient studies. The proposed model uses frequency responses as input data, obtained either directly from measurements or calculated from the available data. The new model is flexible as it allows changes in the detail in which the machine can be represented, and it i... View full abstract»

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  • Tuning of power system controllers using symbolic eigensensitivity analysis and linear programming

    Publication Year: 1995, Page(s):314 - 322
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    In this paper, a systematic method for the tuning of multiple power system controllers using symbolic eigensensitivity analysis and linear programming is presented. The concept of eigenvalue sensitivity is used here to formulate the linear first-order variation of the real part of the dominant system eigenvalue as a symbolic function of controller parameters. This eigenvalue variation is minimized... View full abstract»

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  • Effect of EMF on minimum cost power transmission

    Publication Year: 1995, Page(s):347 - 355
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    Concern about electromagnetic field (EMF) effects on human health has heightened public awareness of overhead transmission lines planning and operation. The objective of this paper is to study the effect of EMF constraints on optimal power generation scheduling. This study considers reducing EMF levels associated with critical transmission lines by redistributing the scheduled power generation, wh... View full abstract»

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  • Time series identification of interarea and local generator resonant modes

    Publication Year: 1995, Page(s):273 - 279
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    A power system consisting of large generation pools is characterized by several modes of oscillation. The various modes arise from a group of generators swinging relative to other groups as well as each machine swinging relative to its local bus. A practical problem that arises in the design and evaluation of controllers for damping power system oscillations is to measure the appropriate transfer ... View full abstract»

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  • Commercial demand side management using a programmable logic controller

    Publication Year: 1995, Page(s):376 - 379
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Many methods of shedding load during peak hours of power system operation have been utilized for efficient use of generation during peak periods. These methods, however, are usually nondynamic, meaning that power for commercial, industrial, or residential appliances are simply turned on or off as needed. As load management customers increase, a variety of load shedding criteria emerges. Some comme... View full abstract»

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  • Nuclear plant models for medium- to long-term power system stability studies

    Publication Year: 1995, Page(s):141 - 148
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    CRIEPI and EPRI have jointly developed PWR and BWR nuclear power plant models for medium-to long-term power system dynamic simulation studies, which are being implemented for EPRI's and CRIEPI's long-term stability programs respectively, The models are extended versions of CRIEPI's previous model for short-term simulation. The models are useful in simulating the plant dynamics taking into account ... View full abstract»

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Aims & Scope

Covers the requirements, planning, analysis, reliability, operation, and economics of electric generating, transmission, and distribution systems for general industrial, commercial, public, and domestic consumption.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Nikos Hatziargyriou
National Technical University of Athens