Towards a direct test for large scale electric power system instabilities

1985 ◽  
Author(s):  
Robert Thomas ◽  
James Thorp
Keyword(s):  
Power System ◽  
Electric Power ◽  
Large Scale ◽  
Electric Power System ◽  
Direct Test

scholarly journals A Novel Methodology for Adaptive Coordination of Multiple Controllers in Electrical Grids

Mathematics ◽  
2021 ◽  
Vol 9 (13) ◽  
pp. 1474
Author(s):  
Ruben Tapia-Olvera ◽  
Francisco Beltran-Carbajal ◽  
Antonio Valderrabano-Gonzalez ◽  
Omar Aguilar-Mejia
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Large Scale ◽  
Short Circuit ◽  
Dynamic Performance ◽  
Low Frequency ◽  
Electric Power System ◽  
Design Stage ◽  
Positive Interaction

This proposal is aimed to overcome the problem that arises when diverse regulation devices and controlling strategies are involved in electric power systems regulation design. When new devices are included in electric power system after the topology and regulation goals were defined, a new design stage is generally needed to obtain the desired outputs. Moreover, if the initial design is based on a linearized model around an equilibrium point, the new conditions might degrade the whole performance of the system. Our proposal demonstrates that the power system performance can be guaranteed with one design stage when an adequate adaptive scheme is updating some critic controllers’ gains. For large-scale power systems, this feature is illustrated with the use of time domain simulations, showing the dynamic behavior of the significant variables. The transient response is enhanced in terms of maximum overshoot and settling time. This is demonstrated using the deviation between the behavior of some important variables with StatCom, but without or with PSS. A B-Spline neural networks algorithm is used to define the best controllers’ gains to efficiently attenuate low frequency oscillations when a short circuit event is presented. This strategy avoids the parameters and power system model dependency; only a dataset of typical variable measurements is required to achieve the expected behavior. The inclusion of PSS and StatCom with positive interaction, enhances the dynamic performance of the system while illustrating the ability of the strategy in adding different controllers in only one design stage.

The large scale electric power system as a distributed continuum

1998 ◽  
Vol 18 (1) ◽  
pp. 49-50 ◽  
Author(s):  
J.S. Thorp ◽  
C.E. Seyler ◽  
M. Parashar ◽  
A.G. Phadke
Keyword(s):  
Power System ◽  
Electric Power ◽  
Large Scale ◽  
Electric Power System

scholarly journals An overview on the integration of large-scale wind power into the electric power system

2007 ◽  
Vol 1 (05) ◽  
pp. 572-579
Author(s):  
R.P.S. Leao ◽  
◽  
T. Degner ◽  
F.L.M. Antunes ◽  
◽  
...  
Keyword(s):  
Power System ◽  
Electric Power ◽  
Wind Power ◽  
Large Scale ◽  
Electric Power System

STRUCTURE-INDUCED BIFURCATION IN LARGE-SCALE ELECTRIC POWER SYSTEMS

2008 ◽  
Vol 18 (05) ◽  
pp. 1415-1424 ◽  
Author(s):  
SHAO-HUA LI ◽  
HSIAO-DONG CHIANG
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Large Scale ◽  
Reactive Power ◽  
Electric Power System ◽  
Small Power ◽  
Operating Limits ◽  
Power Limits ◽  
System Operating

A structure-induced bifurcation of nonsmooth nonlinear systems is studied and illustrated on electric power system models. The consequence of structure-induced bifurcation is an immediate instability induced by generator reactive power limits. It is numerically shown that structure-induced bifurcation can occur at both small power systems and large-scale power systems. Without taking the structure-induced bifurcation into account in defining power system operating limits, the resulting operating limits can be overly optimistic.

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