Due to their advantages in high power applications, multi-level converters have been introduced to flexible AC Transmission Systems (FACTS) to enhance power transmission system operation. Although several multi-level StatCom topologies have been proposed to verify the high performance of multi-level converters used in reactive power compensation, they are not capable of controlling active power flow. To make multi-level converters more flexible and effective for active power flow control, energy storage systems, such as flywheels and batteries are incorporated into StatComs. In this paper, battery energy storage systems (BESS) are incorporated into a cascaded converter-based StatCom to implement both active and reactive power flow control using a PQ-decoupled PI control strategy. Furthermore, the dynamics of the integrated system in damping power oscillations are studied using an electromagnetic transient program PSCAD/EMTDC. Simulation results are provided to verify the feasibility and practicality of these ideas.

Meeting Name

2002 IEEE Power Engineering Society Winter Meeting (2002: Jan. 27-31, New York, NY)


Electrical and Computer Engineering


Sandia National Laboratories
National Science Foundation (U.S.)

Keywords and Phrases

FACTS; PQ-Decoupled PI Control Strategy; PSCAD/EMTDC Electromagnetic Transient Program; PWM Power Convertors; Active Power Flow Control; Battery Storage Plants; Cascaded Converter-Based STATCOM; Computer Simulation; Control System Analysis Computing; Energy Storage; Flexible AC Transmission Systems; Load Flow Control; Multi-Level StatCom Topologies; Power Oscillations Damping; Power System Analysis Computing; Power Transmission Control; Power Transmission System Operation; Reactive Power Compensation; Reactive Power Control; Reactive Power Flow Control; Secondary Cells; Static VAr Compensators; Two-Term Control

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2002 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jan 2002