Augmentation of Transient Stability Limit of a Power System by Automatic Multiple Application of Dynamic Braking

1985 ◽  
Vol PAS-104 (11) ◽  
pp. 3004-3012 ◽  
Author(s):  
S. Joshi ◽  
D. Tamaskar
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Stability Limit ◽  
Multiple Application ◽  
Dynamic Braking

The Transient Stability Preventive Control of Power System Based on RBF Neural Network

2010 ◽  
Vol 121-122 ◽  
pp. 887-892
Author(s):  
Lan Lan Yu ◽  
Bo Xue Tan ◽  
Tian Xing Meng
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Rbf Neural Network ◽  
Stability Limit ◽  
Simulation Method ◽  
Preventive Control ◽  
Rbf Network ◽  
On Line ◽  
Stability Limits ◽  
Critical Lines

The transient stability preventive estimation and control is one of the most important tasks of the power system. The traditional time domain simulation method cannot meet the standard of on-line estimation because of its heavy computation burden. In this paper, we realize the on-line estimation of transient stability limits on critical lines of a power system using the favorable approximation ability of RBF network. We choose right samples by off-line count to train the RBF network in order to make the error satisfy demand. Preventive control direction and amount are determined based on first-order sensitivities of transient stability limits to generator outputs. The sensitivities are derived from partial derivatives of RBF network outputs to inputs. In the end, we take a practical power system for an example to demonstrate the efficiency of RBF network in estimation of the transient stability limit on critical lines and ability to provide preventive control strategy.

scholarly journals ANALYSIS OF THE TRANSIENT STABILITY LIMIT OF NIGERIA’S 330kV TRANSMISSION SUB-NETWORK

2016 ◽  
Vol 36 (1) ◽  
pp. 213-226
Author(s):  
PO Oluseyi ◽  
TS Adelaja ◽  
TO Akinbulire
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Power Transmission ◽  
Stability Limit ◽  
System Stability ◽  
Transmission Power ◽  
Stability Studies ◽  
Network Expansion ◽  
Stability Model ◽  
High Level

The poor investment in the network expansion programme has led to high level of grid fragility experienced in the power transmission system in Nigeria. Thus, any little disturbance often results in cascaded outage which is very hazardous to the power system equipment and operation. In order to overcome or ameliorate the influence of this challenge, the network engineers have to devise methodologies based on the dynamic stability analysis. This motivates the development of power system transient stability model presented herein. The developed model is thus applied to a specimen of the Nigeria’s transmission power system, i.e. the Ikeja-West Sub-network. This choice is influenced by the fact that the Ikeja-West sub-network is the hub of power transmission arteries in Nigeria. Thus the Electrical Transient and Analysis Program (ETAP) software is deployed to operate on the ensuing model. This then leads to generating a series of results that demonstrates the different scenarios in respect of the system stability studies. The method adopted is quite appealing and promising as a tool in sustaining system stability and security during slight disturbance to the network during operation.http://dx.doi.org/10.4314/njt.v36i1.26

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