How to test whether the power system is reliable?

Reliability is usually not directly detected, but a quantitative conclusion of reliability is obtained through calculation (for example, N- 1).

For the reliability of power system, there is a set of systematic and complete evaluation methods. The main idea is to establish the reliability evaluation indicators first, then get the values of these evaluation indicators through power flow calculation or other steady-state and transient calculations according to the current state of the power system (power system measurement and other information, only this step involves detection), and finally get the reliability value of a single power system (usually 0- 1) by using the evaluation method, and the closer this value is to 1.