Improving the accuracy of system security assessment in highly stressed transmission grids

Acker, Hendrik; Loitz, Soenke; Wellßow, Wolfram H.

doi:10.1109/isgteurope.2013.6695260

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A Basic Principle Of Advanced Steady-state Modeling1

Introduction1

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2014

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Cited by 1 publication

(2 citation statements)

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“…The straight forward equations for the limits of the advanced model [8] are (1) for the stator current limit and (2) for the rotor current limit. The presented advanced model integrates (1) and (2) into a power flow algorithm.…”

Section: A Basic Principle Of Advanced Steady-state Modelingmentioning

confidence: 99%

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Voltage-dependent models of power generation units: A detailed analysis for control center application

Loitz

Acker

Wellßow

et al. 2014

IEEE PES Innovative Smart Grid Technologies, Europe

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Presently, the reactive power limits of the power generation models implemented in the TSO's system security assessment tools do not respond to the voltage magnitude. This may lead to overoptimistic results in high load situations with low grid voltages. This paper proposes a voltage-dependent model of power generation units with detailed consideration of internal synchronous machine effects. The model has been implemented in a professional power flow tool and tested thoroughly. It is then compared to a full dynamic simulation with the help of a test grid. It is shown that the power flow with the proposed model yields positive margins and is thus suitable for control center applications.

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Section: A Basic Principle Of Advanced Steady-state Modelingmentioning

confidence: 99%

“…To address this problem the authors have proposed a voltage-dependent model of conventional power generation units for the integration into power flow analysis [8]. The model is designed for simple implementation with little additional data required.…”

Section: Introductionmentioning

confidence: 99%