Control approach of three‐phase grid connected PV inverters for voltage unbalance mitigation in low‐voltage distribution grids

<em>Realizing a smart Low Voltage Distribution System (LVDS) is essential to realize a smart grid. Restructuring the existing distribution system into microgrids is one important requirement to achieve a smart LVDS. The realization of microgrids in LVDS can take different shapes in different countries. This article discusses the challenges and practical solutions to realize a smart LVDS for radial distribution grids, which are common in India. The network following a distribution transformer can be distinguished as a microgrid for radial low voltage distribution grids. However, this leads to many operational issues. Therefore, this article envisions replacing the Low Voltage distribution transformers with <a>Solid-State Transformers </a>(SSTs). This will enable the LVDS to control the power exchange between the phases within a microgrid as well as power exchange between different microgrids. The architectural design of a smart home in smart LVDS is outlined to complete the discussion. Various unique features required for smart inverters in a smart home and existing grid codes to make them compatible with smart LVDS are also reviewed.</em><i></i>

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A Novel Method for Calculating the Three-phase Unbalanced Shunt Compensation Current in the Low Voltage Distribution Network

10.1109/iecon48115.2021.9589753 ◽

2021 ◽

Author(s):

Li Yin ◽

Alian Chen

Keyword(s):

Low Voltage ◽

Distribution Network ◽

Voltage Distribution ◽

Three Phase ◽

Novel Method ◽

Shunt Compensation

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A generalizable and sensor-independent deep learning method for fault detection and location in low-voltage distribution grids

Applied Energy ◽

10.1016/j.apenergy.2020.115299 ◽

2020 ◽

Vol 276 ◽

pp. 115299

Author(s):

Nikolaos Sapountzoglou ◽

Jesus Lago ◽

Bart De Schutter ◽

Bertrand Raison

Keyword(s):

Deep Learning ◽

Fault Detection ◽

Low Voltage ◽

Learning Method ◽

Voltage Distribution ◽

Distribution Grids

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Impact of Solar Panel Orientation on the Integration of Solar Energy in Low-Voltage Distribution Grids

International Journal of Photoenergy ◽

10.1155/2020/2412780 ◽

2020 ◽

Vol 2020 ◽

pp. 1-13 ◽

Cited By ~ 3

Author(s):

Joannes I. Laveyne ◽

Dimitar Bozalakov ◽

Greet Van Eetvelde ◽

Lieven Vandevelde

Keyword(s):

Low Voltage ◽

Real Life ◽

Solar Panel ◽

Solar Panels ◽

Voltage Distribution ◽

Distribution Grid ◽

Voltage Balance ◽

Residential Distribution ◽

The Impact ◽

Distribution Grids

In Belgium, and many other countries, rooftop solar panels are becoming a ubiquitous form of decentralised energy production. The increasing share of these distributed installations however imposes many challenges on the operators of the low-voltage distribution grid. They must keep the voltage levels and voltage balance on their grids in check and are often regulatory required to provide sufficient reception capacity for new power producing installations. By placing solar panels in different inclinations and azimuth angles, power production profiles can possibly be shifted to align more with residential power consumption profiles. In this article, it is investigated if the orientation of solar panels can have a mitigating impact on the integration problems on residential low voltage distribution grids. An improved simulation model of a solar panel installation is constructed, which is used to simulate the impact on a residential distribution grid. To stay as close to real-life conditions as possible, real irradiation data and a model of an existing grid are used. Both the developed model as the results on grid impact are evaluated.

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