TRELSS: A computer program for transmission reliability evaluation of large-scale systems. Volume 2, User`s reference manual

Technical Report · Fri May 01 04:00:00 EDT 1992

OSTI ID:10151708

Bhavaraju, M P; Nour, N E ^[1]

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1. Public Service Electric and Gas Co., Newark, NJ (United States)

Transmission system reliability evaluation using probabilistic contingency enumeration is a logical extension of deterministic methods used today. TRELSS is a software package that used contingency enumeration of generation and transmission contingencies to evaluate power network reliability. TRELSS is designed to aid electric utility system planners for reliability assessment of bulk power systems. TRELSS computes reliability indices using a contingency enumeration approach, which involves selection and evaluation of contingencies, classification of each contingency according to specific failure criteria, and computation of reliability indices. Two methods of reliability assessment are used: the System Problem Approach (without remedial actions) and the Capability Approach (remedial actions). TRELSS incorporates a wide range of models for reliability assessment including: efficient ranking of contingencies based on circuit overloads and voltage problems, multiple load level analysis, dc or decoupled ac power flow, linear programming for remedial actions (generation redispatch, shunt switching, adjustment of phase shifters, transformer tap adjustment, and three classes of load curtailment to relieve system violations). Reliability indices include frequency, duration and severity (load curtailed, and energy curtailed, and number of customers lost). Both area and bus indices are calculated. The TRELSS program is tested with a 25 bus test system and a 2182 bus utility derived test system.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Public Service Electric and Gas Co., Newark, NJ (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 10151708
• Report Number(s): EPRI-TR--100566-Vol.2; ON: UN92015049
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100
99 GENERAL AND MISCELLANEOUS
990200
FORTRAN
LOAD MANAGEMENT
MANUALS
MATHEMATICS AND COMPUTERS
OUTAGES
PLANNING
POWER SYSTEMS
POWER TRANSMISSION
PROBABILITY
RELIABILITY
T CODES