Abstract
The concept of the so-called droop control has been widely discussed in the literature as the preferred controller for Voltage Source Converter for High Voltage Direct Current (VSC-HVDC) multiterminal and DC grid schemes. Droop control provides fast dynamic response and power-sharing between converter stations among other advantages but, as the controller is usually implemented as a merely proportional gain, the DC grid resonances damping is often very poor. This is because although the grids under study are DC, a broad range of high-frequency components and transient dynamics are inevitable in DC grids caused by long cables and switching to name a few. Conventional droops based on proportional gain are not able to handle such frequency-dependant issues of the DC grids. To improve the DC dynamic response, this paper presents a new droop controller where a DC resonance mitigation compensator is augmented to the conventional droop control that will result in an improved droop compensation by guaranteeing that power-sharing task will satisfactorily meet the desired damping requirements.
Original language | English |
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Title of host publication | 15th IET International Conference on AC and DC Power Transmission (ACDC 2019) |
Place of Publication | [Stevenage] |
Number of pages | 6 |
Volume | 2019 |
Edition | CP751 |
ISBN (Electronic) | 978-1-83953-007-4 |
DOIs | |
Publication status | Published - 6 Feb 2019 |
Event | 15th IET International Conference on AC and DC Power Transmission, ACDC 2019 - Coventry, United Kingdom Duration: 5 Feb 2019 → 7 Feb 2019 |
Conference
Conference | 15th IET International Conference on AC and DC Power Transmission, ACDC 2019 |
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Country/Territory | United Kingdom |
City | Coventry |
Period | 5/02/19 → 7/02/19 |
Keywords
- dynamic response
- power conversion
- power distribution control
- power grids
- damping
- HVDC power convertors
- voltage control
- power generation control
- HVDC power transmission
- distributed power generation