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Generation, Transmission and Distribution, IEE Proceedings C

Issue 3 • Date May 1985

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Displaying Results 1 - 8 of 8
  • Turbine-generator steady-state reactances

    Publication Year: 1985 , Page(s): 101 - 108
    Cited by:  Papers (8)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (893 KB)  

    The variation of the steady-state axis reactances of a 500 MW generator with load and power factor has been obtained from measured load points. At rated power, the direct axis reactance can be as much as 30% below the unsaturated value, and measured values of quadrature-axis reactance can vary by 20% over a range of power factors. The finite-element method has been used successfully to simulate th... View full abstract»

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  • An adaptive power-system stabiliser which cancels the negative damping torque of a synchronous generator

    Publication Year: 1985 , Page(s): 109 - 117
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (951 KB)  

    The paper presents a new criterion for designing a power-system stabiliser, which is that it should cancel the negative damping torque inherent in a synchronous generator and automatic voltage regulator. The method arises from analysis based on the properties of tensor invariance, but it is easily implemented, and leads to the design of an adaptive controller. Extensive computations and simulation... View full abstract»

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  • A new algorithm for a nonlinear multicriteria decision-making problem

    Publication Year: 1985 , Page(s): 118 - 122
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (615 KB)  

    A multiple-objective function model, formed according to the goal programming techniques rather than as a single-objective function model, and subject to a number of constraints, is more realistic for all engineering problems. A new algorithm using the random search technique is presented for obtaining a nearglobal optimum solution to multiple-objective nonlinear models. The application of these t... View full abstract»

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  • Robust state estimation in power systems using sparse linear programming

    Publication Year: 1985 , Page(s): 123 - 131
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1177 KB)  

    The paper presents a novel method for the estimation of the voltage magnitudes and phase angles at the nodes of an interconnected electric power system. The algorithm proposed represents an iterative process which utilises four sets of linear equations, the solution of which is achieved by sparse linear programming. In addition to the estimation of the voltage magnitude and phase angle at the node... View full abstract»

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  • Comparative study of polar and Cartesian co-ordinate algorithms for power-system state-estimation problems

    Publication Year: 1985 , Page(s): 132 - 138
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (787 KB)  

    The paper presents a detailed study of the convergence characteristics and an assessment of the performance of three algorithms used to solve the power-system state estimation problem. These algorithms are the polar co-ordinate formulations of the full and fast-decoupled weighted least squares (WLS) and the Cartesian co-ordinate WLS. These algorithms are studied and compared to determine their con... View full abstract»

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  • Probabilistic load flow considering network outages

    Publication Year: 1985 , Page(s): 139 - 145
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (844 KB)  

    Many techniques have been proposed to solve the load flow problem probabilistically. The great majority have only accounted for load and generation data uncertainties, and therefore, the network configuration has been considered fixed. So far, the effects of the configuration uncertainties due to the probabilistic nature of the network have not been deeply analysed. The paper presents a new method... View full abstract»

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  • Design of stabilisers in multimachine power systems

    Publication Year: 1985 , Page(s): 146 - 153
    Cited by:  Papers (13)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (855 KB)  

    The paper presents a new method for designing decentralised stabilisers in multimachine power systems. Here the main design objective is to enhance the dynamic stability of a power system by applying powersystem stabilisers with parameters so determined that some or all of the system mechanical-mode eigenvalues have prescribed values. The usefulness of the proposed method is illustrated through nu... View full abstract»

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  • Subsynchronous resonance damping by specially controlling a parallel HVDC link

    Publication Year: 1985 , Page(s): 154 - 160
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (726 KB)  

    A previous investigation has shown, in principle, that subsynchronous resonance (SSR) can be damped by adding a HVDC link in parallel with an existing resonating AC line, provided that the rectifier end of the HVDC link is equipped with an auxiliary damping controller (ADC). This paper investigates the feasibility of applying these principles to a newly commissioned SSR prone power station. Howeve... View full abstract»

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