Technical Articles

Starting in 2011, short technical articles by Pterra are published in Blog format. The Blog articles are not cataloged on this page but can be found at http://pterra.us/blog2/.

Ordered by Date of Publication

2010	"A Methodology for Estimating Potential Curtailment of Wind Farms," Pterra Consulting, September 2010
	"High Voltage Concern at Wind Farms?", Pterra Consulting, May 2010
	"HVDC Technology: When 2,000 MW is 2,000-Plus-1,200 MW", Pterra Consulting, March 2010
2009	"Power Flow Solution Techniques", M. Gutierrez, M. Elfayoumy, R. Tapia, R. Austria, November 2009
	"HVDC Technology: DC Overlay on an AC System", R. Austria, K. Dartawan, M. Elfayoumy, M. Gutierrez, R. Tapia, November 2009
	"Converging the Power Flow 3: Mitigation", R, Austria, October 2009
	"Wind Farm Integration: Analytical Requirements" Pterra Consulting, October 2009
	"Voltage Stability: The Voltage Ledge Seen Close-Up" R. Austria, October 2009
	"Wind Farm Integration: On the Use of Aggregate Models", Pterra Consulting, October 2009
	"Converging the Power Flow, Part 2" Pterra Consulting, October 2009
	"On the Use of Aggregate Models of a Wind Farm," J. Chen, M. Gutierrez, R. Austria, October 2009
	"Converging the Power Flow," Pterra Consulting, July 2009
	"The Coincidence of Wind," Pterra Consulting, May 2009
	"Deriving Machine Parameters for Simulation," Pterra Consulting, April 2009
	"Power System Demands Demand-side Control," E. Cano, Pterra Consulting, April 2009
2008	"Planning Systems for Power Quality," E. Cano, May 2008
	"On Using Linear Approximation and Distribution Factors," Pterra Consulting, April 2008
	"The Increasing Harmonic Penetration in Transmission Systems," E. Cano and K. Dartawan, March 2008
2007	"Rising Out of the Trench: Insight from the Voltage Response Curve," October 2007
	"Observability and Controllability in Highly Compensated Systems ," September 2007
	R. Austria, "The Voltage Ledge," April 2007
	"Application of DVRs in Networks Subject to Reactive Deficiencies," March, 2007.
	M. Gutierrez, R. Austria, "Developing Open Form User Models for Dynamic Simulation," February 2007
2006	"Going Underground - Geothermal Power," December, 2006.
	"AC to DC Line Conversion - It's time to think about it," October, 2006.
	"Living on the Ledge - Operating Distribution Systems at Low Voltage," September, 2006.
	"Is Solar the Next Wind?," August, 2006.
	"Towards Better Dynamic Simulation," July, 2006.
	"Subtransmission Planning," R. Austria, June, 2006.
	"The Renewables: Part 1 - Wind Farms," May 2006.
	"Steel Mill in the Neighborhood: Part 2 (In Your Backyard)," K. Dartawan, R. Austria, April 2006.
	"Developing My Dynamic Model," M. Gutierrez, March, 2006.
	"Two Views of Power System Reliability," R. Austria, February, 2006.
	"Steel Mill in the Neighborhood," K. Dartawan, M. Gutierrez, R. Tapia, R. Austria and C. St. Pierre, January 2006.
2005	"The In-Between Voltage State," by R. Austria, December 2005.
	"Open Source or Proprietary Data: the Model Dilemma," by R. Austria and M. Gutierrez, November 2005.
	"Capacitor Applications in Distribution Systems," by K. Dartawan, October 2005.
	"Transmission Planning - Returning to Fundamentals," by R. Austria, September 2005.
	"Overlaying DC Transmission On an AC System" by R. Austria, R. Tapia, K. Dartawan, M. Elfayoumy, M. Gutierrez, August 2005.
	"Resource Planning for Island Networks" by R. Austria, July 2005.
	"Why not Voltage Uprating as a Planning Option?" by R. Austria, June 2005.

Ordered by Topic

Distribution	"Capacitor Applications in Distribution Systems," by K. Dartawan, October 2005.
Dynamic Simulation	"Towards Better Dynamic Simulation," July, 2006.
	"Developing My Dynamic Model," M. Gutierrez, March, 2006.
	"Open Source or Proprietary Data: the Model Dilemma," by R. Austria and M. Gutierrez, November 2005.
HVDC	"HVDC Technology: DC Overlay on an AC System", R. Austria, K. Dartawan, M. Elfayoumy, M. Gutierrez, R. Tapia, November 2009
	"HVDC Technology: When 2,000 MW is 2,000-Plus-1,200 MW", Pterra Consulting, March 2010
Power Flow	"Converging the Power Flow," Pterra Consulting, July 2009
	"Converging the Power Flow, Part 2" Pterra Consulting, October 2009
	"Converging the Power Flow 3: Mitigation", R, Austria, October 2009
	"Power Flow Solution Techniques", M. Gutierrez, M. Elfayoumy, R. Tapia, R. Austria, November 2009
Power Quality	"Steel Mill in the Neighborhood," K. Dartawan, M. Gutierrez, R. Tapia, R. Austria and C. St. Pierre, January 2006.
	"Steel Mill in the Neighborhood: Part 2 (In Your Backyard)," K. Dartawan, R. Austria, April 2006.
	"The Increasing Harmonic Penetration in Transmission Systems," E. Cano and K. Dartawan, March 2008
System Planning	"Power System Demands Demand-side Control," E. Cano, Pterra Consulting, April 2009
	Planning Systems for Power Quality," E. Cano, May 2008
	"Transmission Planning - Returning to Fundamentals," by R. Austria, September 2005.
	"Overlaying DC Transmission On an AC System" by R. Austria, R. Tapia, K. Dartawan, M. Elfayoumy, M. Gutierrez, August 2005.
	"Resource Planning for Island Networks" by R. Austria, July 2005.
	"Why not Voltage Uprating as a Planning Option?" by R. Austria, June 2005.
	"Subtransmission Planning," R. Austria, June, 2006.
	"AC to DC Line Conversion - It's time to think about it," October, 2006.
	Planning Systems for Power Quality," E. Cano, May 2008
Reliability	"Two Views of Power System Reliability," R. Austria, February, 2006.
Renewable Energy	"On the Use of Aggregate Models of a Wind Farm," J. Chen, M. Gutierrez, R. Austria, October 2009
	"The Coincidence of Wind," Pterra Consulting, May 2009
	"The Renewables: Part 1 - Wind Farms," May 2006.
	"Is Solar the Next Wind?," August, 2006.
	"Going Underground - Geothermal Power," December, 2006.
	"Wind Farm Integration: On the Use of Aggregate Models", Pterra Consulting, October 2009
	"Wind Farm Integration: Analytical Requirements" Pterra Consulting, October 2009
	"A Methodology for Estimating Potential Curtailment of Wind Farms," Pterra Consulting, September 2010
	"High Voltage Concern at Wind Farms?", Pterra Consulting, May 2010
System Operations	"Living on the Ledge - Operating Distribution Systems at Low Voltage," September, 2006.
	"Observability and Controllability in Highly Compensated Systems ," September 2007
	"On Using Linear Approximation and Distribution Factors," Pterra Consulting, April 2008
Voltage Stability	"Why not Voltage Uprating as a Planning Option?" by R. Austria, June 2005.
	"The In-Between Voltage State," by R. Austria, December 2005.
	"Living on the Ledge - Operating Distribution Systems at Low Voltage," September, 2006.
	R. Austria, "The Voltage Ledge," April 2007
	"Application of DVRs in Networks Subject to Reactive Deficiencies," March, 2007.
	"Observability and Controllability in Highly Compensated Systems ," September 2007
	"Voltage Stability: The Voltage Ledge Seen Close-Up" R. Austria, October 2009
	"Rising Out of the Trench: Insight from the Voltage Response Curve," October 2007

Selected Technical Papers

In this section you can view selected papers written by Pterra staff. If you would like reprints of the papers in this section, please send a request to info@pterra.us.

Transmission Planning

Ricardo Austria, et al, “Transmission Planning Today: A Challenging Undertaking,” Electricity Journal, May, 2004.

Voltage Uprating

Ricardo Austria, "Voltage Uprating as a Planning Option," IEEE Summer meeting, July, 2005.

Stability and Dynamic Modeling

Ricardo Austria, et al, “Voltage Stability Assessment of the National Grid System Using Modern Analytical Tools,” presented at the 2001 Transmission and Distribution Conference and Exposition, October 28 – November 2, 2001, Atlanta, George, USA.
Ricardo Austria, et al, “Application of FACTS Technology for Increasing Power Transfers of Jiangsu Transmission System,” presented at the CIGRE 2001 International Conference on Power Systems (CIGRE ICPS'2001), September 3-5, 2001, Wuhan, Hubei, China
Mahmoud Elfayoumy, et al, "A Comprehensive Approach for Sub-Synchronous Resonance Screening Analysis Using Frequency scanning Technique.", IEEE conference in Bologna Italy, 2003
Ricardo Austria, "The Voltage Ledge," California ISO Monthly Technology Seminar, April 27, 2007, Folsom, CA
Moises Gutierrez, Ricardo Austria, "Developing Open Form User Models for Dynamic Simulation," presented at PSLF Users Group Meeting, April 26-27, 2007, Chicago, IL

Industrial Applications

Ketut Dartawan and Conrad St. Pierre, "Proposed Methods to Determine Fault Point X=R Ratio for Breaker Evaluation," IEEE Transactions on Industry Applications, Vol. 40, NO. 4, July/August 2004.

Reliability

Dag Reppen, "Increasing Utilization of the Transmission Grid Requires New Reliability Criteria and Comprehensive Reliability Assessment," PMAPS, 2004.
Mahmoud K. Elfayoumy, Ramon R. Tapia and Roger Clayton, "Transmission and the Reliability of the New York State Bulk Power System, Part I: Thermal Transfer Limit Analysis"
M. K. Elfayoumy, et al, "A Conceptual Framework for Value-Based Reliability with Integration of Independent Power Producers", IEE PSMC conference, London, 2002
Ricardo Austria, et al, "Keeping the Lights On," Spectrum, IEEE, Volume 36 , Issue 6 , June 1999, Pages:34 - 39
Ricardo Austria, et al, "Assessing the Impact of substation-related outages on the network reliability," Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference.

Algorithms

Moises Gutierrez, et al, "Nonlinear, lumped parameter transformer model reduction technique," Power Delivery, IEEE Transactions, Volume: 10, Issue: 2, April 1995, Pages:862 - 868.