Power System Response to a Large Disturbance: Energy Associated with System Separation

1983 ◽  
Vol PAS-102 (11) ◽  
pp. 3534-3540 ◽  
Author(s):  
A. Fouad ◽  
Vijay Vittal
Keyword(s):  
Power System ◽  
System Response ◽  
System Separation ◽  
Large Disturbance

scholarly journals Controlled Impedance-Admittance-Torque Nonlinear Modeling and Analysis of Modern Power Systems

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2461
Author(s):  
Panos C. Papageorgiou ◽  
Antonio T. Alexandridis
Keyword(s):  
Power Systems ◽  
Power System ◽  
System Analysis ◽  
Power Converter ◽  
Lyapunov Methods ◽  
Duty Ratio ◽  
System Response ◽  
Power Electronic ◽  
Dynamic Representation ◽  
Dynamic Description

Modern power systems are continuously transformed into decentralized ones where distributed generation (DG) plays a key role. Almost all the different distributed energy resources (DERs) are connected in geographically dispersed places through controlled power electronic interfaces in a manner that essentially affects the dynamic performance and control of the whole power system. Simultaneously, rotating machines in power production or absorption, dominate the system response and stability. In this new frame, this paper proposes a novel generalized dynamic representation and full scale modeling of a modern power system based on the well-known impedance-admittance (IA) network model for the electricity grid, substantially extended to include in detail both the power converter devices by considering the controlled power electronic dynamics and the electrical machines by inserting their full electromechanical dynamics. This formulation results in a holistic nonlinear dynamic description, defined here as controlled impedance-admittance-torque (CIAT) model of the whole system which features common structural characteristics. The model is deployed in state space, involves all the controlled inputs in DG, namely the duty-ratio signals of each power converter interface, all the other external inputs affecting the system, namely all the known or unknown voltage, current, and torque inputs. As shown in the paper, the proposed CIAT model retains its fundamental properties for any DG and network topology, standard or varying. This enables the compression of the accurate analytic power system dynamic description into a matrix-based generic nonlinear model that can be easily used for analysis studies of such large-scale systems. Taking into account the nonlinear nature of the CIAT matrix-based model and the persistent action of the external inputs, Lyapunov methods deployed on recently established input to state stability (ISS) notions are systematically applied for the system analysis. Hence, the traditionally used small-signal model-based analysis that suffers from the intermittent and continuously changing operation of DERs is completely substituted by the proposed formulation. A modern power system example with different DERs involved is analyzed by this way and is extensively simulated to verify the validity of the proposed method.

scholarly journals Initial results in Prony analysis of power system response signals

1990 ◽  
Vol 5 (1) ◽  
pp. 80-89 ◽  
Author(s):  
J.F. Hauer ◽  
C.J. Demeure ◽  
L.L. Scharf
Keyword(s):  
Power System ◽  
System Response ◽  
Initial Results ◽  
Prony Analysis

The change of power system response after successive faults

2014 ◽  
Author(s):  
Jarno Lamponen ◽  
Liisa Haarla ◽  
Emil Hillberg ◽  
Ritva Hirvonen
Keyword(s):  
Power System ◽  
System Response

Study on power system separation based on the local electrical quantities

2003 ◽  
Author(s):  
Lin Teng ◽  
Wanshun Liu ◽  
Wei Yang ◽  
Tao Zheng ◽  
Zhiliang Yin ◽  
...  
Keyword(s):  
Power System ◽  
System Separation

System separation equipment to minimize power system instability using generator's angular-velocity measurements

1993 ◽  
Vol 8 (3) ◽  
pp. 941-947 ◽  
Author(s):  
Y. Morioka ◽  
K. Tomiyama ◽  
H. Arima ◽  
K. Sawai ◽  
K. Omata ◽  
...  
Keyword(s):  
Angular Velocity ◽  
Power System ◽  
Velocity Measurements ◽  
Separation Equipment ◽  
System Separation
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