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Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control

Atheer Habash, Grazia Todeschini

Swansea University Authors: Atheer Habash, Grazia Todeschini

Abstract

The work reported here describes Work Package 2 (WP2) of the WPD NIA Harmonic Mitigation project: the development and validation of a control algorithm to provide existing PV inverters with active filter (AF) functionality. The AF functionality is in addition to the main task performed by these devi...

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Published: This technical report is part of the project 'Harmonic mitigation' in collaboration with Western Power Distribution 2020
URI: https://cronfa.swan.ac.uk/Record/cronfa55775
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spelling 2021-01-14T15:53:07.3497794 v2 55775 2020-11-27 Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control d9d4cb61c6b19b063a4bb0ad065312ce Atheer Habash Atheer Habash true false c4ff9050b31bdec0e560b19bfb3b56d3 Grazia Todeschini Grazia Todeschini true false 2020-11-27 EEEG The work reported here describes Work Package 2 (WP2) of the WPD NIA Harmonic Mitigation project: the development and validation of a control algorithm to provide existing PV inverters with active filter (AF) functionality. The AF functionality is in addition to the main task performed by these devices, i.e. the delivery of power from the photovoltaic panels to the power grid. The chosen modelling environment for this work is MATLAB/Simulink. A detailed model of the PV inverters and power system under consideration has been built and validated as part of Work Package 1 (WP1). The harmonic mitigation algorithm was iteratively developed and tested within this modelling environment, and the resulting impact of operating the algorithm was also demonstrated using this environment. The development of the AF functionality consisted of determining appropriate control algorithms and parameters that allow the PV inverter to inject harmonic components equal in magnitude and opposite in phase with respect to existing harmonics on the feeder. As a result, cancellation of harmonic currents is obtained, leading to reduced harmonic voltage distortion in the upstream network. The principle features of the algorithm are described in Section 2.1 of the slide pack accompanying this summary, together with key issues that shaped the algorithm’s development (Section 2.2).The proposed algorithm was tested with varying harmonic levels, varying levels of irradiance, and for balanced and unbalanced harmonic currents. Additional controls were introduced to ensure that the rating of the PV inverter is not exceeded when harmonics are injected, and to avoid significant and frequent swings in the level of instructed harmonic mitigation. Technical Report This technical report is part of the project 'Harmonic mitigation' in collaboration with Western Power Distribution 17 11 2020 2020-11-17 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University 2021-01-14T15:53:07.3497794 2020-11-27T09:11:29.8501774 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Atheer Habash 1 Grazia Todeschini 2
title Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control
spellingShingle Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control
Atheer Habash
Grazia Todeschini
title_short Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control
title_full Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control
title_fullStr Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control
title_full_unstemmed Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control
title_sort Harmonic mitigation project, Work Package 2: Algorithm design, development and implementation for single inverter control
author_id_str_mv d9d4cb61c6b19b063a4bb0ad065312ce
c4ff9050b31bdec0e560b19bfb3b56d3
author_id_fullname_str_mv d9d4cb61c6b19b063a4bb0ad065312ce_***_Atheer Habash
c4ff9050b31bdec0e560b19bfb3b56d3_***_Grazia Todeschini
author Atheer Habash
Grazia Todeschini
author2 Atheer Habash
Grazia Todeschini
format Technical Report
publishDate 2020
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
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description The work reported here describes Work Package 2 (WP2) of the WPD NIA Harmonic Mitigation project: the development and validation of a control algorithm to provide existing PV inverters with active filter (AF) functionality. The AF functionality is in addition to the main task performed by these devices, i.e. the delivery of power from the photovoltaic panels to the power grid. The chosen modelling environment for this work is MATLAB/Simulink. A detailed model of the PV inverters and power system under consideration has been built and validated as part of Work Package 1 (WP1). The harmonic mitigation algorithm was iteratively developed and tested within this modelling environment, and the resulting impact of operating the algorithm was also demonstrated using this environment. The development of the AF functionality consisted of determining appropriate control algorithms and parameters that allow the PV inverter to inject harmonic components equal in magnitude and opposite in phase with respect to existing harmonics on the feeder. As a result, cancellation of harmonic currents is obtained, leading to reduced harmonic voltage distortion in the upstream network. The principle features of the algorithm are described in Section 2.1 of the slide pack accompanying this summary, together with key issues that shaped the algorithm’s development (Section 2.2).The proposed algorithm was tested with varying harmonic levels, varying levels of irradiance, and for balanced and unbalanced harmonic currents. Additional controls were introduced to ensure that the rating of the PV inverter is not exceeded when harmonics are injected, and to avoid significant and frequent swings in the level of instructed harmonic mitigation.
published_date 2020-11-17T04:10:14Z
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score 10.999161

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