Power System Stability Conditions in Fitting the Synchronous Generator with a Proportional Automatic Excitation Controller
Abstract
The effectiveness of using a proportional automatic excitation controller (AEC-P) for a synchronous generator taking into account the generator damper circuits for maintaining power system steady-state stability is studied.
The effectiveness of applying a synchronous generator’s AEC-P is studied with reference to the power system contingencies specified by the JSC Unified Energy System Operator (SO UES) standard STO 59012820.29.160.20.001-2012 "Requirements for the Excitation Systems and Automatic Voltage Regulators Combined with Power System Stabilizers for Synchronous Generators" with the use of the ETAP software and computing system by numerically analyzing electromechanical transients and assessing the extent to which the process pattern complies with the requirements of the standard in terms of transient damping intensity.
The generator equivalent circuit parameters having the strongest influence on the damping of synchronous swings are determined, and it is shown how the consideration of generator damping circuits influences the pattern of transients in the system equipped with an AEC-P. The numerical study results have demonstrated the effectiveness of applying an AEC-P (i.e., that it meets the requirements specified by the JSC SO UES standard in terms of operating parameters oscillation damping intensity) for power plant synchronous generators operating on the receiving system via a power transmission line.
It has been established that the synchronous generator’s self-damping properties tend to degrade with increasing the generator rated capacity. The best results from applying an AEC-P are obtained for generators having rated capacities ranging from 100 to 200 MW Satisfactory damping of transient parameters has also been achieved for a complex power system.
The obtained study results have demonstrated the possibility of applying AEC-P systems for generators with rated capacities ranging from 100 to 200 MW and can be used in choosing the type of a synchronous generator’s excitation controller. In the case of using an AEC-P, there is no need of tuning the stabilization channels’ parameters.
Electromechanical transients in electric power systems containing synchronous generators equipped with AEC-P should be numerically analyzed with using generator models that take into account their damping circuits. An AEC-P shows efficient performance when installed in generators with a rated capacity of200 MW or less.
References
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Для цитирования: Зубкова И.С., Кузнецов О.Н. Условия устойчивости электроэнергетической системы при применении автоматического регулятора возбуждения пропорционального действия синхронного генератора // Вестник МЭИ. 2020. No 1. С. 11—20. DOI: 10.24160/1993-6982-2020-1-11-20.
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For citation: Zubkova I.S., Kuznetsov O.N. Power System Stability Conditions in Fitting the Synchronous Generator with a Proportional Automatic Excitation Controller. Bulletin of MPEI. 2020;1:11—20. (in Russian). DOI: 10.24160/1993-6982-2020-1-11-20
