Diagnosis method

Evaluation method

Indicator Used

Indicator Description

Data Sources

None

Semi-Markov process

Preventive maintenance frequency

Consider multiple outage mode

Information management system statistics

None

Markov model

Correct action rate, rejection rate, misoperation rate

Consider the effects of device self-test, online monitoring, configuration redundancy and protection misoperation

Literature hypothesis, historical statistics

Method for transforming from dynamic gate to Markov chain

Dynamic fault tree, Markov model

Accumulated failure probability, protection availability, component probability importance

Consider rejection and misoperation modes of the hardware and software

Historical statistics

None

State space model

Economic loss

Consider dual protection

Historical statistics

None

Markov model

Comprehensive misoperation rate

Consider human error

Literature hypothesis

None

Markov model

System integrity

Consider equipment reliability and functional reliability

Vendor experimental parameters, empirical statistics

None

GO method

System success probability

Considering the N-3 failure mode

Literature hypothesis

Using probability method to identify hidden dangers

Event tree model

Misoperation probability

Consider device hidden fault

Historical statistics