A Predictor/Corrector Scheme for Obtaining Q-Limit Points for Power Flow Studies

Yorino, Naoto; Li, Huaqiang; Sasaki, Hiroshi

doi:10.1109/tpwrs.2004.831696

Cited by 60 publications

(59 citation statements)

References 20 publications

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“…Illconditioned case occurs when a system with high ratios of lines R/X , weak interconnection system [2] or heavy loading at some buses [12,36]. All of these factors affected the stability of both methods.…”

Section: Conventional Load Flow Methodsmentioning

confidence: 99%

Critical Reviews of Load Flow Methods for Well, Ill and Unsolvable Condition

Shahriari¹,

Mokhlis²,

Bakar³

2012

Journal of Electrical Engineering

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This paper presents a critical review of Load flow methods in well, ill and unsolvable conditioned systems. The comparison studies deals with multiple load flow solution (MLFS), second-order load-flow (SOLF) and continuation load flow (CLF). The ability of theses method to return from unsolvable solution to a solvable solution in load flow analysis is analyzed and discuss thoroughly. Special attention is given to the problems and techniques to provide optimal recommendations of the parameters that are used in these load flow methods. A part of the reviews, this paper also presents the comparison of numerical result using different type of aforesaid load flow methods for well and ill-conditioned systems.K e y w o r d s: second-order load-flow, multiple load flow solution, continuation load flow, ill-conditioned system, unsolvable condition

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Section: Conventional Load Flow Methodsmentioning

confidence: 99%

Critical Reviews of Load Flow Methods for Well, Ill and Unsolvable Condition

Shahriari¹,

Mokhlis²,

Bakar³

2012

Journal of Electrical Engineering

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“…CPF is widely used as a powerful tool for tracing power-voltage (P-V) curves and thereby obtaining λmax [1][2][3][4][5][6].…”

Section: Continuation Power Flow Techniquementioning

confidence: 99%

“…Various approaches have been proposed for identifying this margin. One of the main approaches, the continuation power flow (CPF) [1][2][3] has a wide range of applications [4][5][6]. The collapse point method [7], sequential quadratic programming (SQP) algorithm, interior point (IP) optimization method [8].…”

Section: Introductionmentioning

confidence: 99%

Cuckoo search algorithm for integration wind power generation to meet load demand growth

Makhloufi

Koussa

Pillai

2017

2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Syst

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Abstract-This article presents a new efficient method for optimal placement and sizing of wind power generators (WPG) in power networks with an objective of coping maximum loadability margin and minimizing reactive power loss. A new total voltage stability based on continuation power flow (CPF) theorem is used to model the problem. The method also highlights the effects of random characteristics of wind resources on loadability margin. Cuckoo search algorithm is applied to find the optimum placement and sizing of WPG since it presents several advantages of few control parameters, high solution quality and fast computational time. The experiment results of IEEE 9-bus show that the optimum location and size of WPGs are different from those considering power system loss and voltage deviation in objective function of the optimization process. A significant effect of the random characteristic of wind resource during load demand growth is revealed. The simulation results show that the CSA can be an efficient and promising method for optimal placement and sizing of WPG in power networks problem.

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“…Since the PoC method is unable to cope with LIB [6], the CPF [1,2] is employed to handle the constraint, i.e., Equation (5) for the purpose of obtaining feasible position of particles that locates on S. The CPF could compute the critical point exactly and is robust and flexible to take into account nonlinear control and inequality constraints. In order to reduce computation time, the best overall approach is to use the conventional power flow method and the CPF analysis in a complementary manner.…”

Section: Application Of Mgcpso To Determine the Shortest Distance To mentioning

confidence: 99%

“…Various methodologies have been proposed for identifying this margin. The continuation power flow (CPF) solved the divergence problem of power flow equation [1,2] and has a wide range of applications such as evaluation of the power system static behavior due to load and/or generation variation with or without control devices [3][4][5]. According to the characteristic of the load flow Jacobian being singular at the point of voltage stability, the point of collapse (PoC) method [6] determines the accurate Saddle Node Bifurcation (SNB) in power systems effectively.…”

Section: Introductionmentioning

confidence: 99%

Determination of shortest distance to voltage instability with particle swarm optimization algorithm

Chen

2008

Int Trans Elec Energy Syst

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SUMMARYLoading margin denotes how close the power system is to voltage instability. This paper presents a new technique to obtain the shortest distance to voltage instability, which converts the computation of the closest point of collapse to an optimization problem. Compared with the existing methods, the notable advantage of this technique is the capability of dealing with various constraints such as generation reactive power limits expediently and of finding out the global shortest distance to instability instead of local one, so that the shortest distance obtained corresponds to the practical system operation and then effective measures may be taken to prevent voltage collapse according to the results. A modified particle swarm optimization algorithm is presented to solve this optimization problem. Of the proposed algorithm, local optimum areas are ascertained and further exploring is implemented to find genuine local optima. Recruiting new particles outside the ascertained local optimum areas enhances the global search stability of the proposed algorithm. Details of the optimization problem and the implementation of the proposed optimization method to test systems are presented and the feasibility and validity are demonstrated.

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A Predictor/Corrector Scheme for Obtaining Q-Limit Points for Power Flow Studies

Cited by 60 publications

References 20 publications

Critical Reviews of Load Flow Methods for Well, Ill and Unsolvable Condition

Critical Reviews of Load Flow Methods for Well, Ill and Unsolvable Condition

Cuckoo search algorithm for integration wind power generation to meet load demand growth

Determination of shortest distance to voltage instability with particle swarm optimization algorithm

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