Well researched and documented real-industry live case studies covering a wide rage of Industries and PQ issues from Asia on harmonic distortions, under-voltage and over-voltage, voltage dips, sags, flicker/sag/swell, transients, earthing, reactive compensation and so on , are available here for downloading. The case studies offer detailed analysis of the PQ issues ad solutions including economic analysis to enable users and top managements to readily go in for implementable economical solutions.
This case study presents the study and solution of harmonic present in the 33KV heavy engineering industry & passive harmonics filter used in electrical system as a solution. Presence of harmonics on MV/HT side of the feeder can affect all load connected across LV side.
Electrical noise is one of the common power quality issuesthat affectcommercial and industrial establishments. Noise can be classified in common mode and differential mode. Common mode or differential mode noise can have negative impact on operation of electronics and communication system. Noise also disturbs the quality ofoutput fromaudio/video systems.
Power quality is a measure of ideal power supply system. The disturbances or deviations from desired power parameters i.e. voltage, current and frequency can be either through grid, a neighbouring user or self generated issues. At times, a plant could face power quality issues generated within its plant boundary and outside it.
Out of various power quality parameters like harmonics, flicker, transients, voltage sags and swells, earthing is one of the critical aspect that needs to be addressed in correct manner. When it comes to proper functioning of critical equipments, earthing becomes vital ingredient.
Power quality issues generated from incoming grid are one of the prevalent problems of power quality. Any disturbance on the grid in the form of huge load variation will affect entire grid. Voltage dips, sags, swells, under voltage and interruptions are still quite common in Indian grid.
Energy Conservation Act 2001 provides a legal framework to embarking on energy conservation in India. Under the act government classified industries based on energy consumption and these industries are known as Designated Consumer (DC). These DC’s are covered under Perform Achieve and Trade (PAT) mechanism with total energy saving target of 6.6 Million Tonnes of Oil Equivalent by 2015.
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