Improved plug–play SV with virtual inertia for enhancing the stability of high RES-penetrated grids
| Autor: | Mahmoud Awad Elshenawy, Sobhy Mohamed Abdelkader, Abdelrahman Ahmed Amin, Soliman Ahmed Farghal |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
invertors
reactive power control reactive power distributed power generation synchronisation power grids synchronous generators voltage control power system stability phase locked loops power generation control self-synchronisation plug–play operation dedicated pll psv smoother grid connection improved plug–play sv virtual inertia high res-penetrated grids synchronisation process complicated controller plug–play capability simpler controller actual controller current system frequency multiple simulation studies grid-friendly inverters sg Electrical engineering. Electronics. Nuclear engineering TK1-9971 |
| Zdroj: | IET Smart Grid (2019) |
| Druh dokumentu: | article |
| ISSN: | 2515-2947 |
| DOI: | 10.1049/iet-stg.2018.0214 |
| Popis: | The synchronverter (SV) is currently one of the most promising grid-friendly inverters that mimic synchronous generators (SGs). Almost all the available SV use virtual current signal for synchronization, which require a complicated controller that lacks plug–play capability. This paper proposes a new generation of self-synchronised SV with a simpler controller, which provides plug–play capability with no need for switching between actual controller current and a virtual current for each ON–OFF process. The proposed SV (PSV) can also share the load with other SGs and SVs and also it is able to take part in regulating system frequency and voltage. A linearised small-signal model is derived for the controller to investigate its stability. The PSV is also validated through multiple simulation studies carried out in MATLAB/Simulink environment. The results show the capability of the PSV to achieve self-synchronisation and plug–play operation without a dedicated PLL or a virtual current. Compared to the current self-synchronised SV, the PSV guarantees a smoother grid connection and gives more accurate reactive power sharing. Moreover, the PSV is applied to a modified IEEE 14-bus test system considering three different contingencies to prove its impact on enhancing system dynamics and stability. |
| Databáze: | Directory of Open Access Journals |
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