Engineering and Power System Study Services to Industrial/Commercial Systems
Industrial systems can be very small to very large in size
with electricity demands ranging from few MW to few hundred MW. Typical of continuous
process industries are , cement, paper, steel, petro-chemicals, oil and gas,
metal industries, refineries, automobile industries, fertilizers, textiles,
food processing units and many more. In almost most cases motor loads are major
portion of the industrial systems and in many other cases non-linear loads form
a major portion of the industrial loads. Power electronics applications for
controlling the process loads and for controlling reactive power demand are
common in many of the industrial loads. A typical system design begins with
collection of load list in each of the process plants and designing individual
cables, feeders, power control centers, motor control centers, HT panels,
instrumentation, protection and control etc. It is typical that most industrial
distribution network are designed to be radial, with some time redundant supply
arrangements [the incomers to panels that supply loads] through bus coupling
arrangements. Many industries have their own captive power plants which provide
whole or partial generation power needed for the industrial plant load. In some
cases the industrial process produce “waste” energy needed for running AC
generators that can be used to establish a captive power plant. It is also
common for the industrial units to operate in parallel with the electricity
supply grid and import/export power depending on the needs and contract between
the plant and the electricity supply company.
The following factors/aspects/services may have to be
considered in engineering services for the industrial systems