Considering Transient Analysis Results in Probabilistic Calculations of Industrial Consumers' Power Supply Reliability

When designing internal and external power supply systems for industrial consumers, one conducts the probabilistic calculations of power supply reliability. To identify all possible short-term power supply failures, we need to consider the results of external power supply system transients' analysis. Various circuit-mode situations should be taken into account, including the repair network circuits, the cases of nearby and remote short circuits, unsuccessful overhead lines automatic re-activation (AR), causing significant damage and losses. The article considers three stages of transient calculations and approaches to assessing the aftermath of emergency disturbances for consumers. The results of the transients' calculations should serve as a basis developing the sets of emergency measures in the industrial consumers external and internal power supply system; such measures should also be evaluated for effectiveness. The paper also substantiates the necessity of accounting for both typical and extra-typical emergency disturbances during transient calculation. It also suggests approaches towards the provision of the reliability of hazardous technological processes power supply by means of the organizational and technical measures implemented.