Tag Archives: distribution

Integrating Solar PV Power with Existing Distribution Circuits; Part 1

A wave of new solar photovoltaic (“PV”) installations for power generation is hitting many distribution circuits around the country.  These installations are typically in the range of 10-2000 kW and comprise of a set of solar PV arrays or trays … Continue reading

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Transient Overvoltages in Wind Farms, and a Case Study

In various Blogs on this site, we have talked about unique technical issues associated with integrating wind farms into existing grids.  This Blog now addresses the matter of transient overvoltages, or TOV, specifically with respect to potential risks to customers … Continue reading

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Training Schedules for Generation X

Pterra conducts training in power technology subjects, not as a primary line, but in response to a perceived need.  Occasionally, work in analytical consulting leads to knowledge and skills that clients and associates desire to acquire.  And we are more … Continue reading

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Report from the 2011 PSLF Users’ Group Meeting

by Ric Austria If only for this one new feature, the trip to attend the meeting (held April 28-29 in sunny Orlando, Florida) was worth it.  The new feature is … PSLF now allows “continuous” tap solutions for phase angle … Continue reading

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Training Schedule

So … we’ve completed our first scheduled course for the year - Distributed Generation (DG) Analysis and Applications Course, and are gearing up for the next 3 months of classes. The DG class, of course, was a first-time course and reflects … Continue reading

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Integrating Solar Photovoltaics and Other Renewables in Distribution Systems

Distributed generation (DG) has become a viable option and is gaining wider acceptance to utilities, customers, and independent power producers. While DG offers many advantages, the interconnecting utility typically requires a system impact study for interconnecting DG to the existing … Continue reading

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Distributed Generation: Interconnection Steady State Impact

Jingjia Chen, Ketut Dartawan, Ricardo Austria Distributed generators (DGs) are small generating units that are connected to the distribution network at voltages below 69 kV. DG units usually have capacities of 10MW or less, and are based on different energy … Continue reading

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Distributed Generation: Things You Don’t Want to Miss!

by K. Dartawan, R. Austria What is Distributed Generation (DG)? Unlike big generation stations connected directly to the utility’s transmission grid, DG is typically smaller, about 10 MW or less connected to the distribution network or customer side. The DG … Continue reading

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Distributed Generation Impact: Sympathetic Tripping of Protection Devices

by E. Cano, K. Dartawan, R. Austria One potential impact of interconnecting distributed generation (DG) is the potential sympathetic tripping of overcurrent (OC) protection devices, where a healthy feeder trips unnecessarily for a fault on another feeder. The sympathetic tripping … Continue reading

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Updated Fall 2010 Schedule and Sample Course Notes

There has been a change in the schedule for two courses this month as follows: Aug 17-14, 2010 – Dynamic Simulations Analysis and Applications Course  Aug 24-26, 2010 – Voltage Stability Analysis and Applications Course  We will be travelling offsite … Continue reading

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