This Project Report On Voltage Sag Report presents typical voltage sag distributions for the Finnish rural and urban networks are calculated. To propagate throughout the power system Voltage sags propagate throughout the power system and a sag sensitive customer can experience sags caused by faults at the same, higher or lower voltage levels. In this report the main interest is distribution companies and their possibilities in decreasing the impact of voltage sags. Thus only voltage sags caused by short circuit faults on MV radically operated networks and experienced by LV customers are studied. Network characteristics have influence on voltage sag distribution.
Voltage sag is a momentary decrease in the rms voltage, usually caused by a fault in the utility transmission line or distribution system within customer facility. It is a temporary voltage drop below 90% of the nominal voltage level. Voltage sags and momentary power interruptions are probably the most important power quality problems affecting industrial and large commercial customers. Voltage sags and momentary power interruptions are probably the most important PQ problem affecting industrial and large commercial customers. These events are usually associated with a fault at some location in the supplying power system. Interruptions occur when the fault is on the circuit supplying the customer.
Project Report On Voltage Sag Report Conclusion:
The problems of voltage – sag has to be tackled in two ways. The customer will have to improve the ride through capability of their sensitive equipment. If system power conditioning is expensive, it may be economical in the long-term to improve the actual process equipment.
The voltage sag, if implemented by utilities cab yield the following benefits to utility,1 New customers may be attracted by sag-performance.2 Existing customer satisfaction may be enhanced by quick correction of voltage sag performance. 3 Areas may be detected for system enhancement. 4 Power quality disputes can be settled. 5 Public relations will be better.6 even current protection can be evaluated as it applies to duration of voltage sag.
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