Siemens VSC FACTS operating fleet achieves superior availability

RALEIGH, NC, November 19, 2001 – Siemens was recognized at the recent EPRI FACTS Users’ Group Meeting in New York for achieving superior availability on its operating fleet of voltage-sourced converter (VSC) FACTS devices.

According to EPRI’s Dr. Robert Schainker, Product Line Manager, Transmission & Substations, “The extensive effort and commitment of EPRI and its members has enabled FACTS to progress over the past 10 years from a concept to a commercially, field-proven technology. Siemens’ latest STATCOM FACTS technology has achieved an availability that well exceeds industry standards and demonstrates that Siemens FACTS technology has arrived as an accepted and proven product to increase power flow, control, and voltage support on critical transmission circuits.”

VSC FACTS are gaining wider acceptance as the industry recognizes the need for more cost effective, reliable and secure power delivery. Siemens has seven systems in operation with a total dynamic range of over 2000 MVA. Although they commissioned a small demonstration unit in 1986, their first major VSC FACTS was the +100MVA STATCOM for the Tennessee Valley Authority at the Sullivan Substation in Johnson City, Tennessee dedicated in 1995.

Richard Verret, Senior Vice President, American Electric Power (AEP) – Transmission notes, “I am very pleased with Siemens’ work developing and installing the most versatile tool ever to maximize the value of our transmission assets. Their

on-time commissioning of our Laredo STATCOM further demonstrates Siemens’ commitment to assist us in achieving effective and reliable power delivery.” AEP has become the largest user of Siemens VSC FACTS with the world’s-first Unified Power Flow Controller (UPFC) located in Inez, KY and with their Central & South West Services acquisition that included two STATCOMs located on the Tex-Mex border in Brownsville and Laredo, TX. Verret adds “The high availability achieved with our UPFC during the Availability Demonstration Program run gives me confidence that voltage-sourced converter FACTS is a vital tool for the electric power industry.”

Ken Haase, Senior VP of Transmission for the New York Power Authority (NYPA) adds, “The Convertible Static Compensator (CSC) from Siemens in operation at our Marcy Substation is the most advanced and versatile transmission control device yet. The initial phase of this project includes two +/- 100 MVA STATCOMS that have strengthened the reliability, efficiency, and dynamic response of the New York transmission grid resulting in improved voltage control and reduced transmission congestion.

“And, this coming summer, the second phase of the project will be installed which will ultimately enable the transfer of power from one line to another in less than a blink of an eye with the potential to further reduce congestion and move more power over the existing transmission network.”

Don Ramey, Manager of Power Systems & Substation Engineering, who leads the mission to improve fleet availability notes the process: “Our team focused on specific availability detractors and systematically identified solutions and implementation plans with the support of our utility partners and EPRI. While our availability is admirable, we continue to be ever vigilant of maintaining ongoing customer satisfaction.”

About Siemens Power Transmission & Distribution (USA)

Siemens Power Transmission & Distribution, Inc., headquartered in Raleigh, NC, creates innovative equipment and energy service solutions for electric utilities, independent power producers, co-generators and other energy-intensive industries. It has operations in Orlando, FL; Wendell, NC; Jackson, MS; Lafayette, IN; Minneapolis, MN; San Jose, CA; Atlanta, GA and Reynosa, Mexico. For more information visit

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