The document outlines the recommended delivery plan for hosting replica equipment at the HVDC Centre, detailing the necessary steps, timelines, and documentation to ensure successful installation, commissioning, and operation of HVDC replicas. It emphasizes early engagement, comprehensive documentation, and collaboration among all parties involved.
This document can be shared freely with all parties interested in the HVDC Centre replica hosting services. For further information, please contact the HVDC Centre.
This document is intended to inform stakeholders about the different types of HVDC control and protection replicas and what function and features they bring. It can be shared freely with all parties interested in the HVDC Centre replica hosting services. For further information, please contact the Centre.
This document is intended to inform the design and deployment of replica equipment to be hosted at the HVDC Centre. It can be shared freely with all parties interested in the HVDC Centre facilities. For further information, please contact the Centre.
HVDC ‘bootstraps’ are becoming a key option in the reinforcement of the transmission system. As the generation mix moves towards renewables, sources are becoming more dispersed and located further from load centres, requiring extensive transmission network upgrades to get the power to where it is needed. As a result of restrictions in space and consenting issues locating new circuits onshore, there has been a move to locate new circuits offshore. This requires long cable circuits, where HVDC technology must be used. This note explores how the choice of HVDC technology can affect the system integration challenge of the required upgrades to the transmission system. Download file below.
The integration of AC connected wind farms into the existing power network has significantly changed the characteristics of the system and adequate small signal wind turbine models will be required to assess system stability considering the existence of difference converter technologies. While the small signal behaviour of Type 4 turbine has been extensively studied, the small signal impedance of doubly-fed induction generator (DFIG) based Type 3 turbine has not been well understood. The purpose of this study is to develop small signal admittance model of Type 3 turbine under different control modes and operating points. In this report the admittances of Type 3 turbine are then compared to the Type 4 turbine to highlight the main differences between the two. The small-signal admittances of both turbine types from the analytical models are verified against the measurements from time-domain models.
