Dranetz's sister company,
Electrotek Concepts, can provide solutions to existing
power quality problems, alleviate problems that may be looming in a power
system, and provide recommendations to ensure optimal power quality for
facilities under construction or renovation.
Among the services Electrotek performs, is harmonic studies for renewable power
plants and IPPs. Variable speed turbines that utilize power electronics can
produce harmonic voltages and currents that can violate interconnection
requirements. Wind plant collector systems usually include extensive
underground cable systems that create harmonic resonance considerations that
can lead to equipment damage. We evaluate and design harmonic filters for wind
plants. In cases where inverters are used, there are concerns that they may
produce harmonics and contribute to frequency fluctuations. Electrotek utilizes
its own
SuperHarm™ software package to model the transmission system, the wind
plant collector system, the reactive power system, and the turbine harmonic
source characteristics and to model other renewable energy power plant
configurations. These models allow simulation studies to be performed to
determine potential problems and their most economical solutions. Electrotek
also uses experience and site measurements to validate the results of the
modeling and simulations.
