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PFC Engineering
Ltd.
Power Factor Correction & Power
Quality. |
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Increased power quality problems are caused mainly by the increased
use of non-linear loads such as computer equipment, variable speed
drives and power electronics used in control gear. But as well as
causing these problems, these devices are often directly affected
by the system anomalies they cause. Historically, the main concern
for electricity consumers was having sufficient power available
for their requirements. Now however, consumers are increasingly
forced to consider not only the “quantity”, but also
the “quality” of power used, in order to maintain the
correct functioning and reliability of their installed equipment.
Electricity as supplied by the main generating plants can be considered
clean (i.e balanced, sinusoidal, three phase power). Disruption
to this supply is only caused by equipment failure or adverse weather
conditions. Therefore, any power quality anomalies experienced on
the supply network can be attributed to consumers. These anomalies
may take the form of voltage surges or sags, spikes, notches and
harmonics.
As these power quality problems are created by the consumer’s
load, these anomalies can also easily travel within the common electricity
supply network between premises, in turn disrupting a neighbouring
consumers supply. In response to these occurances, supply authorities
have adopted guidelines such as G5/4 and IEEE-519 in order to limit
the level of disturbance created by each individual consumer.
We have extended our field of expertise to offer a comprehensive
service for Power Quality solutions, including:
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