Description of a Micro-SMES system for protection of critical customer facilities

Compensation of Voltage FluctuationUsing STATCOM

“…However they have their limitations, and can only be used, economically, at low power ratings. So-called superconducting magnetic energy storage(SMES) systems [4] are becoming more attractive and competitive in taking over the role of power conditioning for large sensitive loads, especially with the rapid reduction in the cost of their power conversion units which mainly consist of power electronic components. The use of devices installed for other purposes to offer some extra assistance during voltage sags is also of great importance, as this is the cheapest way to lessen voltage sags.…”

Voltage Sag Mitigation Using Supercapacitor Based Dynamic Voltage Restorer

“…system comprising with an energy source and without an energy source. Energy storage applied to DVR are a lead acid battery [20], capacitors [21][22], superconducting magnetic energy storage (SMES) [23],flywheel [24] etc. Energy storage system and injection transformer adds to its physical size, weight and cost to the system, is the main drawback of DVR.…”

Performance enhancement of a dynamic voltage restorer

“…A lead acid battery or any other energy source or the line to which the DVR is connected provides the required energy for the compensation [5][6][7][8][9][10]. Although novel solid state switches have brought down the size and cost of the inverter used in a DVR, still it is bulky, heavy, and costly due to the energy storage element and series transformer.…”

“…They require precise mathematical linear models and their performance suffers from parameter variation [5][6][7][8][9][10]. Variable structure controllers work effectively without the need for accurate mathematical models.…”