PTW Reliability Program calculates reliability indices and cost effects for alternative system
designs. Calculations include alternative supplies, alternative network configurations, spare
equipment, time to repair, and cost impact of lost production. Libraries for time-adjusted
component failure rates and costs are provided to save time and simplify system modeling.
Benefits:
Design more reliable power systems.
Save costs by identifying and
correcting system weaknesses
efficiently and systematically.
Save time by using standard
libraries of time-adjusted failure
rates and costs.
Communicate designs more easily
with professional reports and graphs.
Evaluate alternatives quickly and
easily to establish an optimal design.
Save time with pre-defined utility
system configuration selections.
Interface Options:
Shares common interface with balanced DAPPER studies, harmonic analysis,
transient stability, equipment evaluation, reliability, and CAPTOR protective
coordination modules.
Expanding tree structure to manage and compare multiple cases.
User-defined time-based cost function for each load lost in outage.
Repair time specification for each systems component.
Replace time and cost of spare specification for each systems component.
Permanent, active and temporary failure rates for each transformer.
Permanent and active failure rates for each cable and cable termination.
User-definable library of standard component reliability data.
User-definable library for default cost function for loads lost in outage.
Study Options:
Repair, replace and switching options automatically evaluated.
Reliability indices reported at each load and each bus.
IEEE indices reported at each protective device.
Options to include or exclude switches, fuses and load reliability in calculations.
Option to repair or replace transformers.
Cost evaluations for standard utility supply configuration alternatives.
User-defined weighting preferences for operation, reliability, maintenance,
recovery and cost factors.
User-defined aging factors for failure rate and repair time.
Reliability reports include MTTF, Failure Rate, MTTR, Annual Outage,
ENNS, ECOST.
Cost evaluation reports include equipment lists and costs for utility and
distribution systems.
Cost evaluation reports include summary value based on user-defined
weighting factors
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