Ercot experience screening for Sub-Synchronous Control Interaction in the vicinity of series capacitor banks

Author

Adams, J. ; Pappu, V.A. ; Dixit, A.

Author_Institution

Resource Integration Dept., ERCOT, Taylor, TX, USA

fYear

2012

fDate

22-26 July 2012

Firstpage

1

Lastpage

5

Abstract

A transmission expansion project, Competitive Renewable Energy Zone (CREZ), in the ERCOT region will be implemented to deliver wind generation from wind resource areas to load centers. Several extra high voltage transmission lines will be equipped with series capacitors to increase the transfer capability. A SubSynchronous resonance (SSR) phenomenon that can be induced by having a conventional generator radially connected to the series compensated line has been well studied and documented. However, a similar phenomenon, Sub-Synchronous Control Interaction (SSCI) can also be induced between a wind generation resource and series compensated lines. It is important to identify proposed points of interconnection at risk of sub-synchronous control interaction. Identifying and sharing this information can prevent damage to transmission and generation equipment. ERCOT anticipates that control settings can be adjusted to mitigate or avoid SSCI or alternate turbine designs selected for a particular location.

Keywords

capacitor storage; compensation; power system interconnection; power transmission control; power transmission lines; preventive maintenance; subsynchronous resonance; wind turbines; CREZ; ERCOT experience screening; SSCI; SSCI avoidance; SSCI mitigation; SSR phenomenon; alternate turbine designs; competitive renewable energy zone; extra high voltage transmission lines; generation equipment damage prevention; information identification; information sharing; interconnection point identification; load centers; radially connected generator; series capacitor banks; series compensated line; subsynchronous control interaction risk; subsynchronous resonance; transfer capability; transmission equipment damage prevention; transmission expansion project; wind generation; wind generation resource; Generators; Impedance; PSCAD; Power transmission lines; Resonant frequency; Substations; Wind farms; CREZ — Competitive Renewable Electric Zones; Screening Study; Series Compensation; Sub Synchronous Resonance; Wind Farm;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting, 2012 IEEE

Conference_Location

San Diego, CA

ISSN

1944-9925

Print_ISBN

978-1-4673-2727-5

Electronic_ISBN

1944-9925

Type

conf

DOI

10.1109/PESGM.2012.6345409

Filename

6345409