Surya Santoso


Power Quality – From Lightning and Harmonics to Variable Energy Resources

The aging power grid infrastructure coupled with the elements of nature and increasing penetration of variable energy sources such as wind and solar photovoltaic generation can give rise to poor electric power quality. Incompatibilities between the electrical characteristics of today’s power system and the expectations for loads are the root causes of nearly all power quality problems. A decrease in the supply voltage for a fraction of a second can trip a microprocessor-based motor controller offline, disrupting an entire manufacturing process. Another example may involve poor feeder voltage regulation due variable wind or solar power causing short term over- and undervoltages. This course provides a solid foundation in understanding common power quality phenomena, root causes of power quality disturbances, harmonics, solutions, impacts of variable generation, monitoring, technical standards, and industry trends. Topics can be tailored to the needs of the audience.

Distributed Resource Integration

Distributed energy resources, such as solar photovoltaic, wind turbines, and energy storage, presents opportunities and challenges in planning and operation of utility distribution circuits. This short course presents the following topics:

  1. Introduction to distribution system planning strategies and analysis tools for integrating DERs into existing circuits: desired DER grid services, operational use and stacked benefits, sizes and locations, and impacts of the interconnection, particularly voltage regulation.
  2. Voltage regulation and control: characteristics and factors influencing voltage regulation, control methods using volt/var, and mitigation options at both at the primary and secondary wires.
  3. Harmonics: low and high-order harmonics, origin, propagation, and resonance.
  4. System-wide monitoring: strategies, placements, and applications. Topics can be tailored to the needs of the audience.

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