Stability Modeling Of Storage Devices In FACTS Applications

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Information about Stability Modeling Of Storage Devices In FACTS Applications
Engineering

Published on April 5, 2014

Author: preetinaga

Source: slideshare.net

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Stability Modeling Of Storage Devices
In FACTS Applications

VELAGAPUDI RAMAKRISHNA SIDDHARTHA ENGINEERING COLLEGE DEPARTMENT OF ELECTRICAL ELECTRONICS ENGINEERING Accredited by NBA – Approved by AICTE - Autonomous Stability Modeling Of Storage Devices In FACTS Applications Term paper report on

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 2 Index  Abstract  Need for the storage devices.  Super conducting magnetic energy storage.  Steady state models.  State of operation.  Static VAR compensators.

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA Abstract  Modeling of the storage devices for better stability.  Storage devices applied in the FACTS is » Superconducting Magnetic Energy Storage (SMES) » Battery Energy Storage System (BESS). 3  These are often considered as FACTS applications.

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA Need For Storage Devices:  Actually FACTS controllers are capable for the  improving voltage,  small signal,  Transient, stability margins of the system.  In order to improve the additional controllability , storage devices introduced into the system. 4

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 5  SMES was originally proposed as a bulk of energy storage device For electrical power systems.  power conversion is achieved by the two power electronics topologies.  the VSC and the DC –DC chopper share a common DC bus. The coil can be configured as the solenoid that producers fairly large fringe fields Super conducting magnetic energy storage devices

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 6 Steady state models

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA  Steady-state models are used in power flow and voltage stability studies.  The models keep the desired real and reactive power injections subject to the nominal current capability of the interface VSC  In case of series VSC, the inserted voltage must be within its nominal magnitude capability, as well.  The desired real power injection in steady state is normally zero, implying that no special consideration is required for the storage devices to be within their capabilities. 7 Steady state models

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA State of operation  responses are quite fast with respect to electro-mechanical phenomena (i.e., up to a few Hz)  the power electronic equipments are generally modeled as quasi steady-state interfaces.  augmented by dynamic control models with varying degrees of details. 8

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA  Static VAR compensators and static synchronous compensators are static VAR generators whose output is varied , so as to maintain our control specific maintain parameters systems of the electrical power systems.  SVC system of thyristor controlled reactor (TCR) type is mainly composed of filter (capacitor) branch and TCR branch, including thyristor valves, control and protection system, cooling system, TCR reactor and other equipments 9 Static VAR Compensator

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA Description of STATCOM  There can be a little active power exchange between the STATCOM and the EPS.  The exchange between the inverter and the AC system can be controlled adjusting the output voltage angle from the inverter to the voltage angle of the AC system.  This means that the inverter can not provide active power to the AC system form the DC accumulated energy if the output voltage of the inverter goes before the voltage of the AC system.  On the other hand, the inverter can absorb the active power of the AC system if its voltage is delayed in respect to the AC system voltage 10

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 11 STATCOM

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 12 Dynamic Model of Super conducting Inductor

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 13 Dynamic Model of Battery

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 14 [1]Saeed Arabl, “A SMES model for comprehenswe power system stabdity studies,” EPRt Conference - The Future of Power Delivery in the 2 ls’ Century, San Diego, November 18-20, 1997, TR-109806, Final Report, May 1998, pp. 4-95 to 4-109 [2]H.J Boenig, and J F. Hacrer, “Commissioning Tests of the Bonneville Power Administration 30 MJ Superconducting Magnehc Energy Storage Unit,” IEEE Trans. Power Apparatus and Systems, VOI PAS-104, no. 2, February 1985, pp 302-308 [3] Y. N. Yu, Electric Power System Dynamics. Academic Press, 1983. References

SIVA MALA. KUPPA DEPARTMENT OF EEE VR SIDDHARTHA ENGINEERING COLLEGE ANDHRAPRADESH,INDIA 15 THANKQ

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