On-Line Computation of Phase Shifter Distribution Factors and Lineload Alleviation

Srinivasan, M. S.; Rao, Shilpa; Indulkar,; Venkata,

doi:10.1109/mper.1985.5528455

Cited by 4 publications

(6 citation statements)

References 4 publications

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“…The optimal power flow (OPF) with phase shifter is a good choice. In order to retain the symmetry of Y bus, the injection model of phase shifter used in [23][24] is adopted in this paper. The proposed approach is tested on an IEEE 30-bus test system with a phase shifters located in a transmission line.…”

Section: International Journal Of Computer Applications (0975 -8887) mentioning

confidence: 99%

“…It provides an economically and technically attractive solution to power system security problem by use of some efficient controls, such as controllable series capacitors, phase shifters, and load shedding, etc., [2]- [6]. Several techniques have been proposed in the past for the adjustment of phase shifter or the adjustment of controllable series capacitor to alleviate line overloads [5], [6].…”

Section: Introductionmentioning

confidence: 99%

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An IPM-CFAPSO based Hybrid Method for Multiple Objective Minimizations using TCPS

Balasubbareddy¹,

Obulesh²,

Raju³

2012

IJCA

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This paper presents an Interior Pont Method (IPM) and variant of Particle Swarm Optimization (CFAPSO) based hybrid method to solve optimal power flow in power system incorporating Flexible AC Transmission Systems (FACTS) such as Thyristor Controlled Phase Shifter (TCPS) for minimization of multiple objectives. The proposed IPM-CFAPSO algorithm identifies the optimal values of generator active-power output and the adjustment of reactive power control devices. The proposed optimization process with IPM-CFAPSO is presented with case study example using IEEE 30-bus test system to demonstrate its applicability. The results are presented to show the feasibility and potential of this new approach.

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Section: International Journal Of Computer Applications (0975 -8887) mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An IPM-CFAPSO based Hybrid Method for Multiple Objective Minimizations using TCPS

Balasubbareddy¹,

Obulesh²,

Raju³

2012

IJCA

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“…In [3,4], the simplified phase shifter injection models (only active power injections) are given. In [5,6,7], the extension of this model are given i.e. the reactive injections are taken into account, but in all of above mentioned approaches, the conductance of elements with PST are neglected.…”

Section: Phase Shifter Injection Modelmentioning

confidence: 99%

An efficient decoupled power flow control method by use of phase shifting transformers

Popović

2004

FACTA U EE

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This paper presents an efficient fast decoupled power flow control method, e.g. method for automatic adjustment of a phase shifting transformers (PST) for specified line flows. The effects of a PST are represented by injection model and the corresponding extension of conventional load flow equations is made. Furthermore, the load flow control by means of PST is modeled by additional equations. For solution of the power flow control problem defined, the special fast decoupled procedure is developed. The high numerical efficiency and simplicity of this procedure has been established on the example of real interconnection formed by the power system of Serbia and Montenegro, Romania, Bulgaria, Former Yugoslav Republic of Macedonia, Greece and Albania (Second UCTE synchronous zone).

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“…For some early considerations interested readers are referred to [5][6][7][8][9] and for recent ones to [10][11][12][13]. All these considerations could be roughly classified as optimization [8,13] and non-optimization (direct) based [5][6][7][9][10][11][12]. Optimization based methods (particularly optimal power flow) are arguably more accurate but computationally expensive and time consuming [11].…”

Section: Introductionmentioning

confidence: 99%

An extension of Newton–Raphson power flow problem

Glavić¹,

Alvarado²

2007

Applied Mathematics and Computation

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This paper explores an idea to extend Newton-Raphson power flow problem to handle power system transmission line flow limits, by means of generation redispatch and phase shifters. We extend and reformulate the power flow so that it includes a variety of flow limits (thermal, small-signal stability, voltage difference), generation redispatch, and phase shifters. The novelty of the approach is three step procedure (in case any limit violations exist in the system): run ordinary power flow (and identify flow limits violated), solve a set of linear equations using extended power flow Jacobian by adding a new column and a new raw that characterize particular limit, and resolve ordinary power flow with initial solution obtained after the correction made by solution of linear equations. The use of ordinary power flow Jacobian and minimal extensions to it in the case of limits identified makes this approach an attractive alternative for practical use. A simple numerical example and the examples using an approximate model of real-life European Interconnected Power System are included in the paper to illustrate the concept.

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On-Line Computation of Phase Shifter Distribution Factors and Lineload Alleviation

Cited by 4 publications

References 4 publications

An IPM-CFAPSO based Hybrid Method for Multiple Objective Minimizations using TCPS

An IPM-CFAPSO based Hybrid Method for Multiple Objective Minimizations using TCPS

An efficient decoupled power flow control method by use of phase shifting transformers

An extension of Newton–Raphson power flow problem

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