An integrated scheme to coordinate preventive control and emergency control for transient stability enhancement in power systems

2003 ◽  
Author(s):  
Yang Xinlin ◽  
Sun Yuanzhang
Keyword(s):  
Power Systems ◽  
Transient Stability ◽  
Preventive Control ◽  
Emergency Control ◽  
Stability Enhancement

scholarly journals Distributed Multi-Agent-Based Protection Scheme for Transient Stability Enhancement in Power Systems

2015 ◽  
Vol 16 (2) ◽  
pp. 117-129 ◽  
Author(s):  
M. S. Rahman ◽  
M. A. Mahmud ◽  
H. R. Pota ◽  
M. J. Hossain ◽  
T. F. Orchi
Keyword(s):  
Power Systems ◽  
New England ◽  
Intelligent Agents ◽  
Transient Stability ◽  
Short Circuit ◽  
Agent Based ◽  
Protection Scheme ◽  
Clearing Time ◽  
Multi Agent ◽  
Stability Enhancement

Abstract This paper presents a new distributed agent-based scheme to enhance the transient stability of power systems by maintaining phase angle cohesiveness of interconnected generators through proper relay coordination with critical clearing time (CCT) information. In this distributed multi-agent infrastructure, intelligent agents represent various physical device models to provide dynamic information and energy flow among different physical processes of power systems. The agents can communicate with each other in a distributed manner with a final aim to control circuit breakers (CBs) with CCT information as this is the key issue for maintaining and enhancing the transient stability of power systems. The performance of the proposed scheme is evaluated on a standard IEEE 39-bus New England benchmark system under different large disturbances such as three-phase short-circuit faults and changes in loads within the systems. From the simulation results, it is found that the proposed scheme significantly enhances the transient stability of power systems as compared to a conventional scheme of static CB operation.

Optimal Comprehensive Control of Prevention and Emergency Based on DSR and Probabilistic Insecurity Measurement

2013 ◽  
Vol 694-697 ◽  
pp. 1237-1240
Author(s):  
Huai Dong Liu ◽  
Wei Feng ◽  
An Chang ◽  
Wen Shuang Liu ◽  
Qing Li ◽  
...  
Keyword(s):  
Transient Stability ◽  
Linear Optimization ◽  
Stability Control ◽  
Optimization Strategy ◽  
Improved Genetic Algorithm ◽  
Preventive Control ◽  
Emergency Control ◽  
Security Region ◽  
The Cost ◽  
Dynamic Security Region

Transient stability control of power system is a non-linear optimization problem which contains many constraints. Considering the cost of preventive control, emergency control and the following restorative control synthetically, a model of preventive control and emergency control based on DSR(Dynamic Security Region) and probabilistic insecurity measurement is proposed in the paper, and the optimal operating point of the system was obtained by using the improved genetic algorithm. In the end, the feasibility of the model and optimization strategy are verified by the case of the IEEE 4-generators 11-nodes system. Simulation show that the cost of comprehensive control of prevention and emergency is 13.2% less than the case that without the consideration of the random factors of the fault.

Sign in / Sign up

Export Citation Format

Share Document