A Reconciling Electrical Power Oscillation Damping Controller by Statcom for Energy Storage (original) (raw)
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Power Oscillation Damping Controller Using STATCOM with Energy Storage
2021
This paper presents the design of an adaptive power oscillation damping (POD) controller for a static synchronous compensator (STATCOM) equipped with energy storage. The proposed method is effective in increasing the damping of the system at the desired frequencies. First, the impact of active and reactive power injection into the power system will be carried out using a simple twomachine system model. A control strategy that optimizes active and reactive power injection at various connection points of the STATCOM will be derived using the simplified model. The effectiveness of the proposed control method to provide power oscillation damping irrespective of the connection point of the device and in the presence of system parameter uncertainties will be verified through simulation and results.
Coordination of FACTS controllers for damping improvement in power system
IOSR Journal of Electrical and Electronics Engineering
Damping improvement is very much important in power system. One of the major criteria, deciding the power system operation is the system stability. It is the ability to maintain the machines connected to the system in synchronism. But disturbances consistently happen either due to the sudden addition or removal of load, short circuit of lines, lightning etc. Therefore lack of sufficient damping leads to oscillatory behavior of machine output quantities and instability. FACTS devices enhance this damping and insure stability of the power system. This paper investigates the optimization and coordination of the conventional FACTS (SSSC, STATCOM and UPFC) with POD controller in order to improve the damping and stability of a power system.
An Adaptive Power Oscillation Damping Controller by STATCOM With Energy Storage
IEEE Transactions on Power Systems, 2015
High penetration of dynamic loads, such as induction motors (IMs) could give rise to sustained voltage/frequency and power oscillations in hybrid AC/DC microgrids during disturbances. Majority of the published literature has investigated these stability issues with aggregated models of IMs in hybrid AC/DC microgrids, which do not properly reflect the actual dynamics of parallel operating IMs; hence, power oscillation damping (POD) controllers must be designed explicitly considering various oscillations induced by parallel operating IMs. This paper proposes an adaptive neuro-fuzzy inference system (ANFIS) based POD controller to damp low-frequency oscillations (LFOs) induced by IMs in hybrid AC/DC microgrids. The proposed supplementary POD controller was embedded to the energy storage system (ESS) controller, which provides additional damping power proportional to the frequency deviation. The following two features namely: 1) ability to adjust the gain based on the frequency deviation, and 2) ability to handle more non-linearity in the system dynamics, make the proposed adaptive ANFIS based POD controller more unique compared to conventional POD controllers. The effectiveness of the proposed ANFIS-POD controller is verified using non-linear dynamic simulations considering a range of disturbances in a hybrid AC/DC microgrid and different combinations of parallel operating IMs. Results indicate improved oscillatory stability performance in the hybrid AC/DC microgrid with the proposed ANFIS-POD controller. INDEX TERMS Adaptive neuro-fuzzy inference system (ANFIS), hybrid AC/DC microgrid, induction machine (IM), low frequency oscillations (LFOs), power oscillation damping (POD) controller. NOMENCLATURE
Application of STATCOM-SMES Compensator for Power System Dynamic Performance Improvement
2013
The growth of distributed generation within the bulk power system will result in the need for greater control of transmission line power flows. Static Synchronous Compensators (STATCOM) can only exchange reactive power with power grid and is effective for improving voltage stability. The integration of Superconducting Magnetic Energy Storage(SMES) with a STATCOM can extend the traditional STATCOM capabilities to four-quadrant bulk power system power flow control and providing exchange both reactive and active power for STATCOM with the ac network. In this paper presents how a SMES system can be connected to the ac system via the dc bus of a STATCOM. It's shown how the integration of STATCOM and SMES allows bus voltage regulation and power oscillation damping (POD) to be achieved simultaneously. The dynamic performance of the integrated STATCOM-SMES is evaluated through simulation by using PSCAD/EMTDC software and shows the compensation effectiveness of this integrated compensator.
Designing of Supplementary Controller for STATCOM for Damping of Oscillations in Power System
Journal of The Institution of Engineers (India): Series B, 2018
In FACTS devices supplementary signals are widely used to enhance damping and mitigation of subsynchronous resonance in power system. Subsynchronous resonance occurs due to series capacitor in the power systems. High value of series capacitive reactance may destabilize low frequency mode which is more dangerous. There are four critical values of series compensation (X C) against which rotor oscillations may be very high in IEEE first benchmark model. In this paper modeling of STAT-COM with IEEE first benchmark model is presented. Then a supplementary signal is developed which is capable to make the system stable for all critical values of series compensation. The eigenvalues are presented against all four critical values of series compensation.
Dynamic Modeling and Simulation of a STATCOM/SMES Compensator in Power Systems
2014
The advent of Flexible AC Transmission Systems (FACTS) is giving rise to a new family of power electronic equipment emerging for controlling and optimizing the performance of power system, e.g. STATCOM. Static synchronous Compensator (STATCOM) is a commonly used FACTS device and has been successfully applied in power systems. In this sense, superconducting magnetic energy storage (SMES) in integration with a static synchronous compensator (STATCOM) is capable of supplying power systems with both active and reactive powers simultaneously and very rapidly, and thus is able to enhance the security dramatically. In this paper the structure and characteristics of the STATCOM/SMES is proposed. In addition, using a proper control scheme, STATCOM/ SMES is tested on an IEEE 3-bus system and more effective performance of the presented STATCOM/SMES compensator is evaluated with alone STATCOM through the dynamic simulation by using PSCAD/EMTDC software. Keywords—STATCOM/SMES, Oscillation Dampin...
Dynamic performance of a static synchronous compensator with energy storage
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194), 2001
This paper discusses the integration of a static synchronous compensator (StatCom) with an energy storage system in damping power oscillations. The performance of the StatCom, a self-commutated solid-state voltage inverter, can be improved with the addition of energy storage. In this study, a 100 MJ SMES coil is connected to the voltage source iuverter front-end of a StatCom via a dcdc chopper. The dynamics of real and reactive power responses of the integrated system to system oscillations are studied using an electromagnetic transient program PSCADw/HvlTDCw, and the findings are presented. The results show that, depending on the location of the StatCom-SMES combination, simultaneous modulation of real and reactive power can significantly improve the perfonuance of the combined compensator. The paper also discusses some of the control aspects in the integrated system.
International Journal of Trend in Scientific Research and Development, 2020
This thesis work introduces the control of the coordinates of PSS and STATCOM to damp the inter-field oscillations of the multi-machine system. In previous eras, PSS was used as a local controller in multi-machine systems to dampen such oscillations between fields. Reactive FACTS devices, such as synchronous static compensators (STATCOM) are taken into account and evaluated for their design of a damping controller. STATCOM is a reactive power compensator based on a voltage source converter that uses electronic power devices with stop capacity as switching devices. Its main function is to support the voltage of the bus from which it is connected to the system by providing a quick response to the delivery or absorption of reactive power. In order to dampen the power oscillations, the power oscillation damping function (POD) must be used, in which its output is summed with the voltage reference at the input of STATCOM.
Efficacy of Facts in Power Oscillation Damping and Renewable Integration
This paper discusses about the approach towards effective power oscillation damping, root causes for the genesis of power oscillation and various methodologies adopted to eradicate it.This paper presents an unified approach of FACTS controller installation in order to ensure effective power oscillation damping. The power oscillations, if not controlled within time, may aggravate the entire power system's functioning and ultimate outcome as blackout. The network congestion has been a matter of serious concern to utility operations due to classical transmission corridors and inadequate controllers' deployment. The necessity of system regulations demands an adequate controller for matching the power requirement variability and this has been demonstrated with STATCOM control feature. This controller enhances the Available Transfer Capability along with security and reliability. IEEE 14 Bus system is simulated and studied with various scenarios with the help of MATLAB and PSAT to identify various complexities and to resolve these issues so as to enhance the ATC, reliability and security Keywords: Available Transfer Capability (ATC), Flexible A C transmission (FACTS), power system stabilizer (PSS), UPFC.
Application of FACTS devices for damping of power system oscillations
2005 IEEE Russia Power Tech, 2005
This paper describes an adaptive tuning of parameters of a power oscillation damping (POD) controller for FACTS devices. The FACTS devices considered here are the Thyristor Controlled Series Compensator (TCSC) and the Unified Power Flow Controller (UPFC). A residue method is applied to the linearized power system model to determine the best siting for FACTS devices as well as for the selection of measured signals. Information available from a higher control level, e.g. from a wide-area monitoring and control platform, is used for a fine tuning of the POD controller in case of changing operating conditions.