Probabilistic transient stability studies using the conditional probability approach

Journal Article · Tue Nov 01 04:00:00 EST 1988 · IEEE Trans. Power Syst.; (United States)

OSTI ID:6495712

Hsu, Y; Chang, C L ^[1]

---

1. Dept. of Electrical Engineering, National Taiwan Univ., Taipei (TW)

Transient stability study of Taiwan power system is made using a probabilistic approach. The stochastic nature of prefault system loading conditions as well as other initiating factors, such as the number of faulted circuits, the location and type of faults, was recognized during the compilation of the outage statistics of Taiwan power system. Thus, a probabilistic stability index which takes these random characteristics of system faults into account is computed by using the concept of conditional probability. In addition, the contributions of various fault events to system instability are analyzed by using Bayes' theorem. These probabilities of causes of system instability are valuable informations to system planners since the ''weak points'' of the system can be identified by such measures. The effect of load level uncertainties on stability indices is also examined.

• OSTI ID: 6495712
• Journal Information: IEEE Trans. Power Syst.; (United States), Journal Name: IEEE Trans. Power Syst.; (United States) Vol. 3:4; ISSN ITPSE
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
29 ENERGY PLANNING, POLICY, AND ECONOMY
296000 -- Energy Planning & Policy-- Electric Power
ASIA
COMPUTER CALCULATIONS
ELECTRICAL TRANSIENTS
ENERGY SYSTEMS
FAULT TREE ANALYSIS
ISLANDS
MATHEMATICS
OUTAGES
PEAK LOAD
PLANNING
POWER SYSTEMS
PROBABILISTIC ESTIMATION
STABILITY
STATISTICS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TAIWAN
TRANSIENTS
VOLTAGE DROP