Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency Events
This paper proposes a methodology for tuning a supervisory and frequency-response outer loop control system of a multi-terminal direct current (MTDC) grid designed to transmit offshore wind energy to an onshore AC grid, and to provide frequency support during over-frequency events. The control struc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/11/2807 |
| _version_ | 1797566340038393856 |
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| author | Marta Haro-Larrode Maider Santos-Mugica Agurtzane Etxegarai Pablo Eguia |
| author_facet | Marta Haro-Larrode Maider Santos-Mugica Agurtzane Etxegarai Pablo Eguia |
| author_sort | Marta Haro-Larrode |
| collection | DOAJ |
| description | This paper proposes a methodology for tuning a supervisory and frequency-response outer loop control system of a multi-terminal direct current (MTDC) grid designed to transmit offshore wind energy to an onshore AC grid, and to provide frequency support during over-frequency events. The control structure is based on a master–slave scheme and ensures the achievement of frequency response, with specific implementation of the UK national grid code limited-frequency sensitive (LFSM) and frequency-sensitive (FSM) modes. The onshore AC grid is modelled with an equivalent frequency-response model to simulate the onshore AC grid dynamics under frequency deviations. The main innovation of this paper is the development of a methodology for tuning simultaneously two hierarchical levels of a MTDC coordinated control structure, i.e., the MTDC supervisor, given by the active power set point for slave terminal, and the slope of frequency-response functions at onshore terminals. Based on these two hierarchical levels, different strategies are evaluated in terms of frequency peak reductions and change of the frequency order type. Moreover, tuning guidance is given when a different MTDC control structure or different synchronous generator characteristics of the onshore AC grid are considered. |
| first_indexed | 2024-03-10T19:26:22Z |
| format | Article |
| id | doaj.art-03ec8caf3513414cac869cf54b0e6084 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T19:26:22Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-03ec8caf3513414cac869cf54b0e60842023-11-20T02:32:08ZengMDPI AGEnergies1996-10732020-06-011311280710.3390/en13112807Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency EventsMarta Haro-Larrode0Maider Santos-Mugica1Agurtzane Etxegarai2Pablo Eguia3Department of Electrical Engineering, University of the Basque Country (Spain), 48013 Bilbao, SpainTecnalia Research and Innovation (Spain), 48160 Derio, SpainDepartment of Electrical Engineering, University of the Basque Country (Spain), 48013 Bilbao, SpainDepartment of Electrical Engineering, University of the Basque Country (Spain), 48013 Bilbao, SpainThis paper proposes a methodology for tuning a supervisory and frequency-response outer loop control system of a multi-terminal direct current (MTDC) grid designed to transmit offshore wind energy to an onshore AC grid, and to provide frequency support during over-frequency events. The control structure is based on a master–slave scheme and ensures the achievement of frequency response, with specific implementation of the UK national grid code limited-frequency sensitive (LFSM) and frequency-sensitive (FSM) modes. The onshore AC grid is modelled with an equivalent frequency-response model to simulate the onshore AC grid dynamics under frequency deviations. The main innovation of this paper is the development of a methodology for tuning simultaneously two hierarchical levels of a MTDC coordinated control structure, i.e., the MTDC supervisor, given by the active power set point for slave terminal, and the slope of frequency-response functions at onshore terminals. Based on these two hierarchical levels, different strategies are evaluated in terms of frequency peak reductions and change of the frequency order type. Moreover, tuning guidance is given when a different MTDC control structure or different synchronous generator characteristics of the onshore AC grid are considered.https://www.mdpi.com/1996-1073/13/11/2807multi-terminal HVDC gridsancillary servicescoordinated frequency controlgrid codefrequency responseouter loop |
| spellingShingle | Marta Haro-Larrode Maider Santos-Mugica Agurtzane Etxegarai Pablo Eguia Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency Events Energies multi-terminal HVDC grids ancillary services coordinated frequency control grid code frequency response outer loop |
| title | Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency Events |
| title_full | Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency Events |
| title_fullStr | Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency Events |
| title_full_unstemmed | Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency Events |
| title_short | Methodology for Tuning MTDC Supervisory and Frequency-Response Control Systems at Terminal Level under Over-Frequency Events |
| title_sort | methodology for tuning mtdc supervisory and frequency response control systems at terminal level under over frequency events |
| topic | multi-terminal HVDC grids ancillary services coordinated frequency control grid code frequency response outer loop |
| url | https://www.mdpi.com/1996-1073/13/11/2807 |
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