Power quality: The new paradigm for MV power distribution

Classical grid disturbances due to lightning, utility switching and short circuits, the growing share of power based on renewable energy, and reduced redundancy in lines and substations, all have a negative impact on power quality in medium- and low-voltage distribution networks. To improve the quality of the power at these two voltage levels, at least for consumers operating sensitive processes, the market currently offers a wide range of products, based either on improved traditional technology or on power electronics conversion techniques. However, more economically attractive solutions are required in the future to meet the escalating demands of a competitive and deregulated electric energy market. Besides power electronics conversion systems, information technology will also play an important role in this new scenario.