Flicker Estimation Associated with PV Integrated Distribution Network

Rahman, Shafin; Moghaddami, Masood; Sarwat, Arif I.; Olowu, Temitayo O.; Jafaritalarposhti, Mohammadsaleh

doi:10.1109/secon.2018.8479058

Cited by 36 publications

(18 citation statements)

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“…[10][11][12] As well as, the wind farms and the solar photovoltaic system can also be considered as another voltage flicker source (FS). [13][14][15] According to IEC 61 000-4-15, 16 the human eyes can observe the voltage fluctuations more than a particular magnitude (up to ±10%) for certain frequencies ranged from 0.5 to 35 Hz as an annoying unsteadiness of the light intensity. As mentioned in Afshar, 17 the fluctuations directly effect on flicker of light.…”

Section: Introductionmentioning

confidence: 99%

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A new method with minimum number of monitoring points for flicker source tracing by wavelet transform

Banaem

Abbasi

Tousi

2019

Int Trans Electr Energ Syst

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Summary Recently, both utilities and consumers have paid great attention to voltage fluctuation (flicker) problem, which is defined as low‐frequency fluctuation on the base signal of voltage. For mitigating the flicker, identification of its source is the first step. In this paper, a new method is proposed for identifying the location of flicker sources in a multi‐flicker sources power network in a more reliable and precise manner by a minimum number of monitoring points. This method is based on the wavelet transform (WT), the approximate model of the line and flicker power theory. In addition, in this method, a new factor is proposed for determining the contributions of individual consumers and utility providers in the global flicker level of a common coupling bus‐bar. For validating the performance of the proposed method, comprehensive simulations have been performed in MATLAB environment on a single‐ and multi‐flicker sources system based on IEEE 34 node test feeder. As proved by the results, the proposed method is able to identify the contributions and locations of flicker sources with higher reliability and accuracy compared with other methods.

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Section: Introductionmentioning

confidence: 99%

“…As mentioned earlier, RESs are of the main FSs in the networks. [13][14][15] In addition, with the development of the industry, consumers who produce flicker are growing. Thus, in the future electrical network named smart grids, voltage flicker will be one of the most important issues of power quality that should be reduced.…”

Section: Introductionmentioning

confidence: 99%

A new method with minimum number of monitoring points for flicker source tracing by wavelet transform

Banaem

Abbasi

Tousi

2019

Int Trans Electr Energ Syst

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“…Besides, it increases the complexity and cost due to adding external hardware to the system and does not deal with inverter protection. Some studies were introduced to manage the PQ issues such as voltage harmonics [50], current harmonics [32], flicker problem [23], and voltage unbalance [21] in order to meet the recent requirements concerning the PV penetration at the PCC. By comparing the results of these strategies with the proposed method, in most cases, the proposed method was better.…”

Section: Comparison Between Proposed and Existing Methodsmentioning

confidence: 99%

“…Furthermore, attempts are yet to be made to study the effect of voltage unbalance and flicker regarding PV system penetration. For instance, the study proposed in [21,22] addressed voltage unbalance problem and the flicker issue was addressed by [23]. However, these phenomena were not investigated sufficiently and the standards and requirements were not considered.…”

Section: Introductionmentioning

confidence: 99%

Power Quality Assessment of Grid-Connected PV System in Compliance with the Recent Integration Requirements

et al. 2020

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The generation and integration of photovoltaic power plants (PVPPs) into the utility grid have increased dramatically over the past two decades. In this sense, and to ensure a high quality of the PVPPs generated power as well as a contribution on the power system security and stability, some of the new power quality requirements imposed by different grid codes and standards in order to regulate the installation of PVPPs and ensure the grid stability. This study aims to investigate the recent integration requirements including voltage sag, voltage flicker, harmonics, voltage unbalance, and frequency variation. Additionally, compliance controls and methods to fulfill these requirements are developed. In line with this, a large-scale three-phase grid-connected PVPP is designed. A modified inverter controller without the use of any extra device is designed to mitigate the sage incidence and achieve the low-voltage ride-through requirement. It can efficiently operate at normal conditions and once sag or faults are detected, it can change the mode of operation and inject a reactive current based on the sag depth. A dynamic voltage regulator and its controller are also designed to control the voltage flicker, fluctuation, and unbalance at the point of common coupling between the PVPP and the grid. The voltage and current harmonics are reduced below the specified limits using proper design and a RLC filter. The obtained results show that the proposed controller fulfilled the recent standard requirements in mitigating power quality (PQ) events. Thus, this study can increase the effort towards the development of smooth PVPP integration by optimizing the design, operation and control strategies towards high PQ and green electricity.

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“…At the worst case scenario, 80 MHz spectrum will always be available for third tier/general users when second tier users are active and operated outside of first tier users' zones. This large amount of spectrum can provide clean channels for various wireless communication applications such as smart grid metering data communication [18,19,20,21]. WiFi and LTE use the CBRS band as the potential general (third tier) users in our study.…”

Section: Introductionmentioning

confidence: 99%

A Spectrum Sharing based Metering Infrastructure for Smart Grid Utilizing LTE and WiFi

Parvez¹,

Sarwat²

2019

Adv. sci. technol. eng. syst. j.

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GHz AMI cognitive radio LTE-U CBRS spectrum sharing Internet of Things (IoT) smart meter licensed assisted access (LAA) WiFiIn advanced metering infrastructure (AMI) of smart grid, WiFi is an appropriate choice for its bidirectional communication requirement to transmit data to the billing center. But, WiFi functions in the free spectrum bands and LTE also requires to use the same free bands for its network expansion being licensed spectrum is limited and expansive. LTE and WiFi can operate simultaneously in the 3.5 GHz band (also known as citizen broadband radio service (CBRS)), which has large amount of free and clean spectrum. In this paper, we propose a smart grid metering infrastructure based on fixed duty cycled LTE and WiFi, where smart meters and its' data collectors (known as Access Point) use WiFi and LTE, respectively, for transferring data. Under a system level simulation environment, we investigated the LTE-WiFi coexistence performance in CBRS band considering a time division duplexing (TDD)-LTE associated with FTP traffic, and IEEE 802.11n (WiFi). The simulation performance demonstrates a good neighborhood coexistence between WiFi and LTE, which makes it a potential communication solution for the AMI.

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Flicker Estimation Associated with PV Integrated Distribution Network

Cited by 36 publications

References 1 publication

A new method with minimum number of monitoring points for flicker source tracing by wavelet transform

A new method with minimum number of monitoring points for flicker source tracing by wavelet transform

Power Quality Assessment of Grid-Connected PV System in Compliance with the Recent Integration Requirements

A Spectrum Sharing based Metering Infrastructure for Smart Grid Utilizing LTE and WiFi

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