Multi-machine equal area based power system transient stability measure

1988 ◽  
Vol 3 (1) ◽  
pp. 188-196 ◽  
Author(s):  
P. Rastgoufard ◽  
A. Yazdankhah ◽  
R.A. Schlueter
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Equal Area ◽  
Stability Measure

scholarly journals Equal-area criterion in power systems revisited

2018 ◽  
Vol 474 (2210) ◽  
pp. 20170733
Author(s):  
Yong Sun ◽  
Jinpeng Ma ◽  
Jürgen Kurths ◽  
Meng Zhan
Keyword(s):  
Power Systems ◽  
Power System ◽  
Transient Stability ◽  
System Analysis ◽  
Stable Operation ◽  
Equal Area ◽  
Power System Analysis ◽  
Stability Behaviour ◽  
Single Machine Infinite Bus ◽  
Machine Systems

The classic equal-area criterion (EAC) is of key importance in power system analysis, and provides a powerful, pictorial and quantitative means of analysing transient stability (i.e. the system's ability to maintain stable operation when subjected to a large disturbance). Based on the traditional EAC, it is common sense in engineering that there is a critical cleaning time (CCT); namely, a power system is stable (unstable) if a fault is cleared before (after) this CCT. We regard this form of CCT as bipartite. In this paper, we revisit the EAC theory and, surprisingly, find different kinds of transient stability behaviour. Based on these analyses, we discover that the bipartite CCT is only one type among four major types, and, actually, the forms of CCT can be diversified. In particular, under some circumstances, a system may have no CCT or show a periodic CCT. Our theoretical analysis is verified by numerical simulations in a single-machine-infinite-bus system and also in multi-machine systems. Thus, our study provides a panoramic framework for diverse transient stability behaviour in power systems and also may have a significant impact on applications of multi-stability in various other systems, such as neuroscience, climatology or photonics.

Hybrid Extended Equal-Area Criterion for Fast Transient Stability Assessment with Detailed Power System Models

1995 ◽  
Vol 28 (26) ◽  
pp. 49-54 ◽  
Author(s):  
Y. Zhang ◽  
P. Rousseaux ◽  
L. Wehenkel ◽  
M. Pavella ◽  
Y. Xue ◽  
...  
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Stability Assessment ◽  
Equal Area ◽  
System Models ◽  
Fast Transient

scholarly journals Extended Equal Area Criterion Revisited: A Direct Method for Fast Transient Stability Analysis

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7259
Author(s):  
Alireza Bahmanyar ◽  
Damien Ernst ◽  
Yves Vanaubel ◽  
Quentin Gemine ◽  
Camille Pache ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Power System ◽  
Transient Stability ◽  
Graphical Representation ◽  
Direct Method ◽  
General Definition ◽  
Equal Area ◽  
Functional Scheme ◽  
Fast Transient ◽  
Transient Stability Analysis

For transient stability analysis of a multi-machine power system, the Extended Equal Area Criterion (EEAC) method applies the classic Equal Area Criterion (EAC) concept to an approximate One Machine Infinite Bus (OMIB) equivalent of the system to find the critical clearing angle. The system-critical clearing time can then be obtained by numerical integration of OMIB equations. The EEAC method was proposed in the 1980s and 1990s as a substitute for time-domain simulation for Transmission System Operators (TSOs) to provide fast, transient stability analysis with the limited computational power available those days. To ensure the secure operation of the power system, TSOs have to identify and prevent potential critical scenarios through offline analyses of a few dangerous ones. These days, due to increased uncertainties in electrical power systems, the number of these critical scenarios is increasing, substantially, calling for fast, transient stability analysis techniques once more. Among them, the EEAC is a unique approach that provides not only valuable information, but also a graphical representation of system dynamics. This paper revisits the EEAC but from a modern, functional point of view. First, the definition of the OMIB model of a multi-machine power system is redrawn in its general form. To achieve fast, transient stability analysis, EEAC relies on approximate models of the true OMIB model. These approximations are clarified, and the EAC concept is redefined with a general definition for instability, and its conditions. Based on the defined conditions and definitions, functions are developed for each EEAC building block, which are later put out together to provide a full-resolution, functional scheme. This functional scheme not only covers the previous literature on the subject, but also allows to introduce several possible new EEAC approaches and provides a detailed description of their implementation procedure. A number of approaches are applied to the French EHV network, and the approximations are examined.

Transient Stability Ranking Technique based on System Parameter Estimation and Extended Equal-Area Criterion

2008 ◽  
Vol 128 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Akira Takeuchi ◽  
Takashi Sato ◽  
Kouya Takafuji ◽  
Hideaki Nishiiri ◽  
Kotaro Takasaki ◽  
...  
Keyword(s):  
Parameter Estimation ◽  
System Parameter ◽  
Transient Stability ◽  
Equal Area ◽  
Stability Ranking ◽  
Ranking Technique
Sign in / Sign up

Export Citation Format

Share Document