Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units

Ghaffarianfar, Majid; Hajizadeh, Amin

doi:10.3390/en11081960

Cited by 33 publications

(24 citation statements)

References 23 publications

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“…A set of sensitivity indices is composed of various indices with different formulation approaches [32][33][34][35][36][37]. These indices measure active and reactive power changes (∆V i /∆Q i , ∆V i /∆P i ) in a system with respect to bus voltage variation.…”

Section: Sensitivity Analysis (Sa)mentioning

confidence: 99%

A Recap of Voltage Stability Indices in the Past Three Decades

et al. 2019

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Increasing demand for electricity and the modernization of power systems within competitive markets has induced power systems to operate close to their stability limits. Therefore, the continuous monitoring and control of power systems through voltage stability indices is urgently needed. This is the first-ever effort to examine more than 40 voltage stability indices based on their formulation, application, performance, and assessment measures. These indices are sorted based on a logical and chronological order considering the most recent indices to be applied worldwide. However, the generalizability of these indices in terms of multivariable objectives is limited. Despite its limitation, this study systematically reviews available indices in the literature within the past three decades to compile an integrated knowledge base with an up-to-date exposition. This is followed by a comparative analysis in terms of their similarity, functionality, applicability, formulation, merit, demerit, and overall performance. Also, a broad categorization of voltage stability indices is addressed. This study serves as an exhaustive roadmap of the issue and can be counted as a reference for planning and operation in the context of voltage stability for students, researchers, scholars, and practitioners.

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Section: Sensitivity Analysis (Sa)mentioning

confidence: 99%

A Recap of Voltage Stability Indices in the Past Three Decades

et al. 2019

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“…Others define the PV penetration as the ratio of peak PV power to the peak load apparent power [20]. This paper defines PV penetration as given in Equation 1, which is taken from [21][22][23].…”

Section: Photovoltaic Penetration Definition and Assumptionsmentioning

confidence: 99%

A Comparative Study into Enhancing the PV Penetration Limit of a LV CIGRE Residential Network with Distributed Grid-Tied Single-Phase PV Systems

et al. 2019

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Photovoltaic distributed generation (PVDG) has seen tremendous growth in recent years, especially in the residential sector. Among other concerns, the voltage rise in AC networks is considered the most limiting factor in achieving increased PV penetration levels. A steady-state impact study is performed on a CIGRE low-voltage (LV) residential network. This paper compares six techniques to increase the PV penetration limit in the LV residential network, namely single-phase penetration (SPP), Distribution Scheme 1 (DS1), Distribution Scheme 2 (DS2), alternate phase penetration (APP), offline tap adjustment (OTA) and switched on-load tap adjustment (SOLTA). PSCAD software is used for this study. The best results are obtained for the DS2-SOLTA case that gives the minimum voltage magnitude and voltage unbalance in the system. The steady-state results are validated by a dynamic data study using measured solar irradiance and residential load data. A novel approach is also proposed for calculating the worst day from the data set. The obtained results verify the effectiveness of the proposed approach.

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“…Several numbers of studies have developed various methodologies of incorporating DG, which typically applied to the weakest point in the networks. Most of the related literature implements voltage sensitivity [1][2][3][4][5][6][7], or loss sensitivity [6,[8][9][10][11][12][13] as the main factors in deciding on (optimal) placing and sizing of DG.…”

Section: Introductionmentioning

confidence: 99%

Reliability-based DG location using Monte-Carlo simulation technique

et al. 2020

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Reliability targets have become essential to distribution network operator since Energy Regulator set minimum targets of reliability performance of the network and penalise if the targets not achieved. Thus, placement of distributed generation (DG) into network offers improvement in reliability performance. Typically, less attention is given to DG reliability-based placement compared to voltage-and loss-based placement. Therefore, this paper presents the placement of DG based on reliability performance, which applied to medium voltage (MV) and low voltage (LV) suburban distribution network. The typical Monte-Carlo simulation technique is used to assess both system and customer-related reliability performance. The placement of DG into MV and LV networks show improvement in terms of reliability performance.

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Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units

Cited by 33 publications

References 23 publications

A Recap of Voltage Stability Indices in the Past Three Decades

A Recap of Voltage Stability Indices in the Past Three Decades

A Comparative Study into Enhancing the PV Penetration Limit of a LV CIGRE Residential Network with Distributed Grid-Tied Single-Phase PV Systems

Reliability-based DG location using Monte-Carlo simulation technique

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