WAMS-Based SSR Damping Controller Design for FACTS Devices and Investigating Effects of Communication Delays

Farsadi, Mortaza; Ghasemi, Arash

doi:10.11591/ijpeds.v6.i4.pp736-746

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…1173 control, in addition to the FACTS device main control, can greatly improve system damping [6]- [8] and can also improve system voltage profile, which is advantageous over PSSs. Besides many merits which are provided with FACTS devices, they are suffering from high initial costs, device complexity and low reliability of these devices which means if a single point of failure occurs in a system, the system will be entirely shut down.…”

Section: Inter-area Oscillation Damping Using An Statcom Based Hybridmentioning

confidence: 99%

Inter-area Oscillation Damping using an STATCOM based Hybrid Shunt Compensation Scheme

Farzam¹,

Mokhtarpour²

2016

IJPEDS

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FACTS devices are one of the latest technologies which have been used to improve power system dynamic and stability during recent years. However, widespread adoption of this technology has been hampered by high cost and reliability concerns. In this paper an economical phase imbalanced shunt reactive compensation concept has been introduced and its ability for power system dynamic enhancement and inter-area oscillation damping are investigated. A hybrid phase imbalanced scheme is a shunt capacitive compensation scheme, where two phases are compensated by fixed shunt capacitor (C) and the third phase is compensated by a Static Synchronous Compensator (STATCOM) in shunt with a fixed capacitor (CC). The power system dynamic stability enhancement would be achieved by adding a conventional Wide Area Damping Controller (WADC) to the main control loop of the single phase STATCOM. Two different control methodologies are proposed: a non-optimized conventional damping controller and a conventional damping controller with optomised parameters that are added to the main control loop of the unbalanced compensator in order to damp the inter area oscillations. The proposed arrangement would, certainly, be economically attractive when compared with a full three-phase STATCOM. The proposed scheme is prosperously applied in a 13-bus six-machine test system and various case studies are conducted to demonstrate its ability in damping inter-area oscillations and power system dynamic enhancement.

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Section: Inter-area Oscillation Damping Using An Statcom Based Hybridmentioning

confidence: 99%

Inter-area Oscillation Damping using an STATCOM based Hybrid Shunt Compensation Scheme

Farzam¹,

Mokhtarpour²

2016

IJPEDS

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“…To prevent the generator shaft from damages of un-damped sub-synchronous oscillations, various devices such as: Power System Stabilizers (PSSs) [6] and Flexible AC Transmission Systems (FACTSs) [7][8][9][10] as possible approaches have been proposed. in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[7] a phase imbalance scheme for stabilizing torsional oscillationsa have been proposed or in [8] a WAMS based SSR damping controller is proposed for FACTS devices to SSR mitigation. In [9] a novel control strategy have been proposed based on increasing the network damping at critical frequencies of the generator shaft.…”

Section: Introductionmentioning

confidence: 99%

An STATCOM-Based Hybrid Shunt Compensation Scheme Capable of Damping Subsynchronous Resonance

Mehdizadeh

Nazarpour

2017

IJAPE

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The paper presents the potential use of supplemental control of a new economical phase imbalanced shunt compensation concept for damping Sub Synchronous Resonance (SSR) oscillations. In this scheme, the shunt capacitive compensation in one phase is created by using a single-phase Static Synchronous Compensator (STATCOM) in parallel with a fixed capacitor ( ), and the other two phases are compensated by fixed shunt capacitor (C). The proposed arrangement would, certainly, be economically attractive when compared with a full three-phase STATCOM which have been used/proposed for power swings and SSR damping. SSR mitigation is achieved by introducing a supplemental signal into the control loops of single phase STATCOM. The validity and effectiveness of the proposed structure and supplemental control are demonstrated on a modified version of the IEEE second benchmark model for computer simulation of sub synchronous resonance by means of time domain simulation analysis using the Matlab program.

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“…An auxiliary supplementary controller is required to damp the torsional oscillations. The design of subsynchronous damping controller (SSDC) for FACTS controllers is reported in [4][5][6][7][8][9]. The efficacy of integrating energy storage devices like a battery, fuel cell, supercapacitor etc., to the dc link of STATCOM in enhancing the performance of STATCOM is demonstrated in [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Performance of STATCOM-ES in Mitigating SSR

Mala¹,

Prabhu²,

Rao³

2017

IJPEDS

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One of the advanced power applications using energy storage is the integration of energy storage technologies with VSC-based FACTS controllers. With the support of energy storage device, FACTS controllers will have the ability to exchange active power or energy with the ac network in steady state. This paper discusses the impact of Static Synchronous Compensator incorporating energy storage device (STATCOM-ES) on subsynchronous resonance (SSR). It also proposes the design of an auxiliary SSR damping controller (SSDC) for STATCOM-ES to damp the subsynchronous oscillations which the system is undergoing because of a series capacitor in the transmission system. The system under consideration is IEEE FBM which is modified to incorporate STATCOM-ES at the electrical midpoint. The investigation of SSR characteristics when a STATCOM -ES operating in bus voltage regulation mode is carried out by eigenvalue and damping torque analysis. Transient analysis based on the nonlinear model is also performed to validate the results obtained by conventional methods. Keyword:Damping INTRODUCTIONSubsynchronous Resonance (SSR) is a power system phenomenon which occurs due to the interaction between mechanical system of turbo-alternator and series compensated transmission line resulting in failure of shaft [1]. The behavior of the system undergoing SSR can be analyzed using linear and nonlinear techniques. With the advent of FACTS controllers, it is possible to have control over the AC transmission system parameters [2].Static Synchronous Compensator (STATCOM) is a VSC-based shunt FACTS controller whose objectives are the improvement of dynamic voltage regulation and stability of the system. A capacitor supported STATCOM has only one control variable which is the reactive current whereas a battery supported STATCOM has two control variables namely active and reactive current [3]. An auxiliary supplementary controller is required to damp the torsional oscillations. The design of subsynchronous damping controller (SSDC) for FACTS controllers is reported in [4][5][6][7][8][9]. The efficacy of integrating energy storage devices like a battery, fuel cell, supercapacitor etc., to the dc link of STATCOM in enhancing the performance of STATCOM is demonstrated in [10][11][12]. The authors have shown that there is improvement in dynamic and transient stability of the system by incorporating energy storage at the dc side of STATCOM. But the effect of STATCOM incorporating energy storage (STATCOM-ES) on SSR characteristics has not been investigated till now. Hence, the design of SSDC for STATCOM-ES to mitigate SSR is not yet reported.The objective of this paper is to investigate the effect of STATCOM-ES on a power system which is undergoing subsynchronous resonance and design a subsynchronous damping controller to mitigate torsional

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WAMS-Based SSR Damping Controller Design for FACTS Devices and Investigating Effects of Communication Delays

Cited by 3 publications

References 13 publications

Inter-area Oscillation Damping using an STATCOM based Hybrid Shunt Compensation Scheme

Inter-area Oscillation Damping using an STATCOM based Hybrid Shunt Compensation Scheme

An STATCOM-Based Hybrid Shunt Compensation Scheme Capable of Damping Subsynchronous Resonance

Performance of STATCOM-ES in Mitigating SSR

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