Local steady-state and quasi steady-state impact studies of high photovoltaic generation penetration in power distribution circuits

Jung, Jaesung; Önen, Ahmet; Russell, Kevin; Broadwater, Robert

doi:10.1016/j.rser.2014.11.018

Cited by 17 publications

(10 citation statements)

References 35 publications

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“…This may result in voltage fluctuations in the network. These variations shall be limited in order to maintain the voltage within the allowable limits for each component of the distribution network, such as voltage regulators, capacitor bank and transformer tap switches 7 . Such variations occur through two distinct phenomena: ripple and voltage fluctuation.…”

Section: Resultsmentioning

confidence: 99%

Effects of the Photovoltaic Distributed Generation on Electricity Distribution System Voltage - Updated Review

Júnior

Waenga

Pinto

2018

Braz. arch. biol. technol.

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Concerns about the environment and a growing demand for electricity have led to the intensive search for renewable energy sources. Photovoltaic solar energy, in the form of distributed generation, has shown a very high growth rate to an extent that in some regions it will be adopted on a large scale, thus being responsible for the supply of a significant portion of the load of this region. Some factors have favored the adoption of distributed generation: the drop in the price of solar panels and inverters, as well as its easy installation and maintenance. However, the largescale adoption of solar distributed generation brings new challenges to the power distribution system. Network voltage control is an example. In conventional systems, voltage control is a properly addressed problem, but in networks with the presence of distributed generation, where at certain times of the day reverse energy flows can be observed, more detailed studies on voltage behavior are necessary concerning the power quality. This article makes an analysis of relevant studies on the effects that the insertion of photovoltaic distributed generation can cause in the voltage of the electric power distribution system under the optics of two phenomena: the fluctuation and the voltage ripple.

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Section: Resultsmentioning

confidence: 99%

Effects of the Photovoltaic Distributed Generation on Electricity Distribution System Voltage - Updated Review

Júnior

Waenga

Pinto

2018

Braz. arch. biol. technol.

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“…e opposite is true when the sky shows transitions from cloudy to sunny conditions. e authors have explained this phenomenon by associating it with ambient temperature, i.e., as the sky shows transitions [59, 74-76, 78, 81, 84, 86-88, 94, 96, 99, 100, 107, 109, 110, 122, 123, 128, 129, 153, 155, 168, 171, 174, 176, 183, 187, 188, 200, 213, 214, 230, 235] Effect of system strength (R/X ratio) [155,177,234] Impact of PV on voltage swell/sag [145,169,170,194,211] Effects of cloud movements, cloud pattern, or shading [19,27,59,61,64,67,75,86,96,99,100,107,109,131,146,160,178,215,218,224,240,242,243,258] from sunny to cloudy, both solar irradiance and temperature decrease. A decrease in irradiance decreases the output power of PVs, but temperature drop has an inverse effect.…”

Section: Fast Changes In Powermentioning

confidence: 99%

Impact of Rooftop Photovoltaics on the Distribution System

Alboaouh

Mohagheghi

2020

Journal of Renewable Energy

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This paper presents a review of the impact of rooftop photovoltaic (PV) panels on the distribution grid. This includes how rooftop PVs affect voltage quality, power losses, and the operation of other voltage-regulating devices in the system. A historical background and a classification of the most relevant publications are presented along with the review of the important lessons learned. It has been widely believed that high penetration levels of PVs in the distribution grid can potentially cause problems for node voltages or overhead line flows. However, it is shown in the literature that proper control of the PV resource using smart inverters can alleviate many of those issues, hence paving the way for higher PV penetration levels in the grid.

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“…The objective can be loss minimisation, voltage profile improvement, voltage unbalance improvement or a combination of these objectives. In (1), N s is the number of scenarios indexed by s. V i opt is the optimal voltage that should be followed by inverter i to achieve objective (1). The voltage between phase κ and neutral (n) at bus b in scenario s should be within the predefined limits (2).…”

Section: Summary Of the Adopted Avm Techniquementioning

confidence: 99%

Resilient decentralised control of inverter‐interfaced distributed energy sources in low‐voltage distribution grids

2020

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This paper shows that a relation can be found between the voltage at the terminals of an inverterinterfaced Renewable Energy Source (RES) and its optimal reactive power support. This relationship, known as Volt-Var Curve (VVC), enables the decentral operation of RES for Active Voltage Management (AVM). In this paper, the decentralized AVM technique is modified to consider the effects of the realistic operational constraints of RES. The AVM technique capitalizes on the reactive power support capabilities of inverters to achieve the desired objective in unbalanced active Low-Voltage Distribution Systems (LVDSs). However, as the results show, this AVM technique fails to satisfy the operator's objective when the network structure dynamically changes. By updating the VVCs according to the system configuration and components' availability, the objective functions will be significantly improved, and the AVM method remains resilient against the network changes. To keep the decentralized structure, the impedance identification capability of inverters is used to find the system configuration locally. Adaptive VVCs enable the decentralized control of inverters in an online setting. A real-life suburban residential LV-DS in Dublin, Ireland is used to showcasing the proposed method, and the effectiveness of proposed resilient active voltage management technique is demonstrated.

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Local steady-state and quasi steady-state impact studies of high photovoltaic generation penetration in power distribution circuits

Cited by 17 publications

References 35 publications

Effects of the Photovoltaic Distributed Generation on Electricity Distribution System Voltage - Updated Review

Effects of the Photovoltaic Distributed Generation on Electricity Distribution System Voltage - Updated Review

Impact of Rooftop Photovoltaics on the Distribution System

Resilient decentralised control of inverter‐interfaced distributed energy sources in low‐voltage distribution grids

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