Introduction - If you have any usage issues, please Google them yourself
For the purpose of explaining the security monitoring function, it is expedient to classify the infinite number of possible operating conditions of a power system in terms of security. For this purpose observe that the power system should satisfy the following requirements:
(1) Operating constraints such as: limits on system frequency, limits on bus voltage magnitude, limits on circuit loading, etc. Any attribute of system component, such as loading of a circuit, reactive power generated by a unit, etc. can be expressed as a function of the system state and controls,