A comparative study of VSC-OPF techniques for voltage security improvement and losses reduction

Zabaiou, Tarik; Dessaint, L.-A.; Kamwa, Innocent

doi:10.1109/pesgm.2014.6939000

Cited by 6 publications

(5 citation statements)

References 26 publications

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“…Section 3 clarifies that TVs that assume a transition at the operating point can be applied to the VSCOPF considering LIDB, and those of the trajectory before the transition can be applied to the VSCOPF considering LISB. The original equality constraint for a TV (6) is described as follows with a focus on the bus type: (20) k = PV or PQ (21) where subscripts PV and PQ are PV and PQ buses, respectively. In accordance with the original definition, the bus type set is defined as follows:…”

Section: Proposed Methodsmentioning

confidence: 99%

“…In Table 1, a circle means that the perspective is ensured by the method, a triangle means that it is considered by the method but requires additional processes to be ensured, and a bar means that it is not considered by the method. The static VSI-based method uses static VSIs such as VCPI [19][20][21][22][23], MSV [20,[24][25][26] and L-index [20,[27][28][29][30][31] as an objective function or constraint of the OPF problem. Although these VSIs approximately indicate the proximity of the system to the voltage collapse point, there is no established way to determine the appropriate threshold value corresponding to the required VSM.…”

Section: Related Workmentioning

confidence: 99%

“…The static VSI‐based method uses static VSIs such as VCPI [19–23], MSV [20, 24–26] and L‐index [20, 27–31] as an objective function or constraint of the OPF problem. Although these VSIs approximately indicate the proximity of the system to the voltage collapse point, there is no established way to determine the appropriate threshold value corresponding to the required VSM.…”

Section: Introductionmentioning

confidence: 99%

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Modified tangent vector‐based voltage stability constrained optimal power flow considering limit‐induced bifurcation

Omi

Shirai

2020

IET Generation, Transmission & Distribution

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A modified tangent vector (TV)-based voltage stability constrained optimal power flow method is proposed. The proposed method determines an optimal stable equilibrium point (SEP) satisfying the required voltage stability margin (VSM) considering limit-induced bifurcation (LIB). LIB, which occurs when a generator reaches a reactive power limit during load increasing, may cause an optimistic overestimation of voltage stability and inadequate operation. The key of the proposed method is to use approximated TV for considering LIB as a voltage stability constraint to ensure that the solution becomes an SEP and to avoid inappropriate operation caused by LIB. The validity of the approximation is evaluated analytically and numerically in this study. The threshold for the approximated TV is updated based on the continuation power flow calculation result to satisfy the required VSM. The proposed method was implemented on MATPOWER, and evaluated with a 2-machine 4bus system and an IEEJ standard WEST10-O/V system. The results show that the proposed method can determine the optimal SEP satisfying the required VSM even if LIB occurs.

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Section: Proposed Methodsmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modified tangent vector‐based voltage stability constrained optimal power flow considering limit‐induced bifurcation

Omi

Shirai

2020

IET Generation, Transmission & Distribution

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“…Tables 5-8 show the power output before and after correction, respectively. Reducing power loss while improving the stability of the voltage is one of the significant advantages of the VSC-OPF model [19,41]. The proposed model also retains this advantage.…”

Section: Bls-vsc-opf Model For Ieee-30 Bus Systemmentioning

confidence: 97%

Correction Control Model of L-Index Based on VSC-OPF and BLS Method

Yang,

Long,

Yang

et al. 2024

Sustainability

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With the advancement of artificial intelligence (AI) technology, the real-time measurement and control technology of power systems has also progressed. This paper proposes a correction control model for L-indexes based on voltage stability constrained optimal power flow (VSC-OPF) and a broad learning system (BLS) (BLS-VSC-OPF). This model aims to quickly assess the system’s voltage stability and accurately correct the operation mode when the voltage stability indexes are out of the security range. Firstly, the BLS is used to predict the L-index and to analyze the voltage stability of the power system. Secondly, the approximate first-order sensitivity of the L-index is calculated by the combination of the BLS and the perturbation method. This method solves the problem of the complex sensitivity derivation process in the modeling process of the VSC-OPF model. Meanwhile, when the L-index exceeds the threshold, the BLS and VSC-OPF models are combined to correct this operation mode. The feasibility of the proposed method is verified by the simulation of IEEE-30, IEEE-118, and 1047 bus systems. Finally, the BLS-VSC-OPF model is compared with the linear programming correction model based on BLS (BLS-LPC). The results show that the BLS-VSC-OPF model provides a better correction and control performance.

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“…The behavior of the MSV, TVI, L‐index, and VCPI has been comparatively studied [10]. These indices have been applied to an objective function of VSCOPF, and the solutions have been compared [11]. The load impedance modulus margin (LIMM) has been applied to a constraint of VSCOPF [12] and is based on the differential of Thevenin equivalent circuit impedance and load equivalent impedance.…”

Section: Introductionmentioning

confidence: 99%

Robust calculation method of voltage stability margin based on voltage‐collapse‐point properties

Omi

Shirai

2021

IEEJ Transactions Elec Engng

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The progress in electricity deregulation has made electricity systems more economical while maintaining stability. Therefore, the stability of an electricity system should be evaluated more strictly than done previously. We propose a robust calculation method of voltage stability margin (VSM). The proposed method is based on the optimal‐power‐flow‐based direct method (OPF‐DM), which can calculate VSM directly when complementarity constraints related to limits for reactive‐power generation are added. However, the additional complementarity constraints may cause a convergence and local solution issues because of the numerical complexity. The proposed method calculates the appropriate VSM on the basis of several voltage‐stability properties. We implemented the proposed method on MATPOWER and evaluated it with IEEE 9‐bus, 30‐bus system, 39‐bus, 300‐bus, PEGASE 1354‐bus, and IEEJ WEST10‐O/V systems. The results indicate that the proposed method can calculate VSM robustly compared with conventional methods. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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A comparative study of VSC-OPF techniques for voltage security improvement and losses reduction

Cited by 6 publications

References 26 publications

Modified tangent vector‐based voltage stability constrained optimal power flow considering limit‐induced bifurcation

Modified tangent vector‐based voltage stability constrained optimal power flow considering limit‐induced bifurcation

Correction Control Model of L-Index Based on VSC-OPF and BLS Method

Robust calculation method of voltage stability margin based on voltage‐collapse‐point properties

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