Learn More
This article elaborates on the properly required protection and how its operation will prevent the undesired consequences to the ICG owner, the utility, and the general public. This article also discusses actions that take place when the utility supply is disrupted, creating an islanding condition and states reasons why protection required by regulatory(More)
This paper demonstrates practical considerations when studying overcurrent protection coordination in industrial systems and applying related IEEE Standards. This paper is divided into two parts. Part one focuses on protection coordination for high-voltage and medium-voltage industrial systems. Part two covers balance of distribution system topics. The main(More)
This paper intends to show some special topics on ground-fault protection. Single-line-to-ground faults are the most common fault type, the protection engineer has to understand how often these occur, the nature, and also the effects of a single-phase arcing fault. System grounding also affects the magnitude of fault current, protective devices selection,(More)
The industrial distribution power systems in Northern Alberta supplies electrical energy to satellite locations and mining areas. In some aspects, these systems differ from their counterparts in regular utility distribution cases. Accordingly, they require special attention when performing transient recovery voltage (TRV) studies and identifying ratings for(More)
In a previous companion paper the usage and basic modeling of 3-winding transformers was discussed. This paper complements the first paper and covers the modeling for unbalanced and transient conditions that could also exist in industrial electrical systems. The modeling and presentation of 3-winding transformers is discussed in two parts. The first part(More)
This paper discusses bus and breaker fail protection in modern industrial and commercial power systems. Fault current levels are increasing due to changes in utility arrangements and in-plant power generation. Such high fault currents as well as in-plant generator dynamics and system arc flash incident energy limiting requirements necessitate fast bus fault(More)
This paper describes an experience with the application of distance protective relaying schemes, where a cogeneration facility is added to an existing industrial plant. The single contingency inter-tie between the industrial plant and a third party utility is modified to allow bi-directional power flow and isolation (islanding) if required. Within the(More)
This paper discusses bus and breaker fail protection in modern industrial and commercial power systems. Fault current levels are increasing due to increases in power transmission system capacities and in-plant power generation. Such high fault currents as well as in-plant generator dynamics and system arc flash incident energy limiting requirements(More)