Power Quality Disturbances According to Fluke (2016), power disturbances are defined in terms of magnitude and duration. Also, Watson and Miller (2015) stated that it is the manifestation of a disturbance in the current, that flowing through the system and its …show more content…
In addition, they state that in the residential case the peak generation often coincides with when there is low local load. In a distribution system the conductor often changes to reflect the loading it serves (smaller further down the network). This can result in areas where the low voltage network is weak in terms of ability to cope with distribution generation injection of power. Moreover, they also said that the impact of poor power quality on the electrical supply network is often insidious and often its root cause is not correctly identified. Harmonic content has been shown to destroy capacitor banks, over-heat transformers and overload neutral connections. Storm related damage is a major source of poor power quality. Damage due to transients, such as impulsive lightning induced transients, are also well documented. Low steady-state voltage and voltage dips are a major cause of disruption to end users. The loss of life could be due to harmonics or voltage unbalance, both of which increase the heating of the motor insulation, thereby accelerating its degradation and ultimately its