A voltage dip is a Power-Quality phenomenon, often caused by short circuits in the electricity grid, in which the supplying voltage decreases during a short period of time (typically <2s). Some process components, such as variable speed drives and computers, are extremely sensitive to such dips, which may result in a complete process outage. To determine whether there are cost effective mitigation methods to avoid or limit the damage, requires detailed information on several aspects, such as an estimation of the number of dips to be expected, an overview of possible solutions and a correct economic decision-making criterion. The current literature describes these aspects isolated, neglecting the interactions between the coupled aspects.
This work describes and completes the above-described aspects. Furthermore, it combines them in a coherent framework, resulting in a applicable strategy to find the best techno-economic solution in a concrete situation. The applicability of the introduced methods is demonstrated by case studies of industrial processes in an existing grid.Log in to post comments