Title :
Risk assessment for special protection systems
Author :
Fu, Weihui ; Zhao, Sanyi ; McCalley, James D. ; Vittal, Vijay ; Abi-Samra, Nicholas
Author_Institution :
Iowa State Univ., Ames, IA, USA
fDate :
2/1/2002 12:00:00 AM
Abstract :
Special protection systems (SPS) have been widely used to increase the transfer capability of the network by assisting system operators in administering fast corrective actions. Compared with constructing new transmission facilities, SPS can be placed in service relatively quickly and inexpensively. However, increased reliance on SPS results in additional risks to system security. In this paper, based on existing reliability evaluation methods, a generic procedure for risk-based assessment of SPS is proposed. The procedure can help the system operator to identify the risk brought by SPS and to make SPS-related decisions. An illustrative example which uses a generator rejection scheme (GRS) for transient instability is provided
Keywords :
power system protection; power system reliability; risk management; fast corrective actions; generator rejection scheme; network transfer capability; new transmission facilities construction; probability; reliability; reliability evaluation methods; remedial action schemes; risk assessment; risk-based assessment; special protection systems; transient instability; Decision making; Failure analysis; Hardware; Logic design; Protection; Risk analysis; Risk management; Stability; Stress; System performance;
Journal_Title :
Power Systems, IEEE Transactions on