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Analysis of SSR With Three-Level Twelve-Pulse VSC-Based Interline Power-Flow Controller

Padiyar, KR and Prabhu, Nagesh (2007) Analysis of SSR With Three-Level Twelve-Pulse VSC-Based Interline Power-Flow Controller. In: IEEE Transactions on Power Delivery, 22 (3). pp. 1688-1695.

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Abstract

The interline power-flow controller (IPFC) is a voltage-source-converter (VSC)-based flexible ac transmission system (FACTS) controller for series compensation with the unique capability of power-flow management among the multiline transmission systems of a substation. The reactive voltage injected by individual VSCs can be maintained constant or controlled to regulate active power flow in the respective line. While one VSC regulates the dc voltage, the others control the reactive power flows in the lines by injecting series active voltage. This paper presents the modelling of IPFC with 12-pulse, three-level converters and investigates the subsynchronous-resonance (SSR) characteristics of IPFC for different operating modes. The analysis of SSR is carried out based on eigenvalue analysis and transient simulation of the detailed system. It is illustrated with the help of a case study on a system adapted from the IEEE Second Benchmark Model. The analysis uses both – model (neglecting harmonics in the output voltages of VSCs) and the three-phase model of VSCs using switching functions. While the eigenvalue analysis and controller design is based on the – model, the transient simulation considers both models.

Item Type: Journal Article
Additional Information: Copyright 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Eigenvalue analysis;flexible ac transmission systems (FACTS);interline power-flow controller (IPFC);static synchronous series compensator (SSSC);subsynchronous resonance (SSR);transient simulation;voltage-source converters (VSCs)
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 04 Jun 2008
Last Modified: 19 Sep 2010 04:45
URI: http://eprints.iisc.ernet.in/id/eprint/14191

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