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- W251073864 abstract "The continuous growth of the electrical system, resulting in growing electric powerdemand, is putting great emphasis on system operation and control. These topics,together with system reliability and security, are becoming more and more of interestfor the research community, in particular due to the recent trend towards restructuringand deregulation of the power supplies. It is under this scenario that Flexible ACTransmission Systems (FACTS) Controllers at transmission level and Custom PowerDevices at distribution level represent both opportunities and challenges for an optimaluse of the power systems. In particular, the Static Synchronous Compensator(STATCOM) is a key device for reinforcement of the stability in an AC power systemand for mitigation of power quality phenomena. Although typically used for reactivepower injection only, an upcoming idea today is to equip the STATCOM with anenergy storage connected on the dc-link of the converter, thus also allowing short-termactive power support to the power systems.This report focuses on the use of energy storage equipped STATCOM (also knownunder the name of E-STATCOM). As first, the current controller used in thecompensator, which represents the heart of the control system, will be derived. Then,two additional control systems, in order to allow frequency control and poweroscillation damping, will be derived and analyzed. To verify these control systems, asimple network will be used as a benchmark model in PSCAD/EMTDC and the resultsfrom the simulations will be analyzed. The obtained results on the stabilityimprovement by aims of the E-STATCOM will be supported by analyticalinvestigation. Furthermore, the need for active power support in the actual grid ofFalbygdens Energi AB (FEAB) will be investigated. Finally, the impact of acontrollable load, or “smart load”, on the dynamic performance of the investigatedFEAB’s grid will be shown. In the investigated cases, the smart load will be controlledin order to meet the power balance between load and local production in case ofislanding conditions.The obtained results show good dynamical performance of the system. By analyzing theresults from the simulations it can be concluded that it is possible to temporary controlthe system frequency, given an adequate size of the energy storage. The size of thestorage is of high importance, in particular in case of islanding operation. It will beshown that another important factor for a successful operation of the E-STATCOM isits location into the power system. The location of the compensator will impact thedynamic performance of the overall system as well as the energy storage ratings, inparticular when used for power oscillation damping." @default.
- W251073864 created "2016-06-24" @default.
- W251073864 creator A5087236254 @default.
- W251073864 date "2010-01-01" @default.
- W251073864 modified "2023-09-23" @default.
- W251073864 title "Use of energy-storage equipped shunt compensator for frequency control" @default.
- W251073864 hasPublicationYear "2010" @default.
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