UNIFIED POWER QUALITY CONDITIONER FOR MULTI-FEEDER SYSTEMS TO COMPENSATE POWER FLOW
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Abstract
PowerQuality (PQ) issues such as flicker and imbalance have become important concerns as nonlinear and electr onically switched devices become more widely used in distribution networks and businesses. Lighting strikes on transmission lines, capacitor bank switching, and a variety of network faults can all create PQ issues such transie nts, voltage sag/swell, and interruption. For appropriate load performance, however, a growth in sensitive loads i ncluding digital electronics and complicated process controllers necessitates a pure sinusoidal supply voltage. It may be required to incorporate compensation in order to meet PQ standard limits. Active rectification and active filtering are examples of modern methods. A shunt active power filter(SAPF) is suitable for suppressing negative load influence on supply voltage irregularities; nevertheless, full correction may require a series active filter. It may be required to incorporate compensation in order to meet PQ standard limits. Active rectification and active filtering are examples of modern methods. A shunt active power filter is suitable for suppressing negative load influence on supply voltage irregularities; nevertheless, full correction may require a series active filter. In distribution systems, series active filters such as the Distributed Voltage Regulator (DVR) from the Custom Power (CP) family can be used to solve voltage difficulties, while parallel active filters such as the Distribution Static Compensator (DSTATCOM) can be used to improve current problems. Nowadays, an efficient combination of the above-mentioned CP devices is employed to instantly improve both voltage and current problems. Unified Power Quality Conditioner is the name of this gadget (UPQC).
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