go to top scroll for more


Projects: Projects for Investigator
Reference Number NIA_NGET0029
Title Optimising the operation of an integrated DC link within an AC system (ICase Award)
Status Completed
Energy Categories Other Power and Storage Technologies(Electricity transmission and distribution) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
National Grid Electricity Transmission
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 October 2011
End Date 01 April 2015
Duration 42 months
Total Grant Value £172,648
Industrial Sectors Power
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , National Grid Electricity Transmission (100.000%)
Web Site http://www.smarternetworks.org/project/NIA_NGET0029
Objectives The objectives of the project include: -Study different scenarios of generation and contingencies in the UK grid to assess the stability of LCC HVDC representing the Western HVDC Link, Study the interaction of different HVDC technologies and potential for coordination between the technologies representing the Deeside area of the UK grid where multiple HVDC links will terminate in close proximity, Study of multiple HVDC infeeds to a simple AC node to assess potential for offshore AC hubs with LCC HVDC. The success criteria of the project will be four annual reports, to include: -First year Report - summary of steady state analyses of power flows for different levels of dispatch on the HVDC link. Second Year Report - development of metrics and analysis environment for study of system stability. Third Year report - report on initial stability assessments. Final Report - including recommendations for operation of HVDC link.
Abstract Determination of quite how the system should be operated in the latter part of the present decade and beyond will be critical to maximising the exploitation of the renewable energy resources in the north of Britain, especially Scotland. This presents a variety of questions that need to be clearly understood, this includes; the western HVDC “bootstrap’ is a line commutated converter system. How sensitive will its stable operation be to different generation despatches at the northern end? For example, will commutation continue to be robustly achieved when the only significant synchronous generation operating in Scotland is at Torness and Peterhead, with some situations in which only Peterhead might be running (for example, when Torness is being refuelled)?What type of fault on the HVDC link should be secured against, e.g. loss of a single bipole?How should the power transfer on the HVDC link be despatched in order for there to be security in respect of the total transfer out of Scotland? Would the need to secure against possible loss of an AC double circuit or a single bipole on the HVDC link dictate only a part-loading of the link relative to its capacity, a development of existing inter-tripping schemes or the carrying of some minimum amount of response and reserve within particular areas of the system, e.g. low frequency reserve in England?On the GB system as a whole, with significant wind power operating, with what frequency might generating plant need to be re-dispatched? What new problems would that present to operators?Assuming that the quality of a forecast of available wind power can be quantified alongside a central forecast, how could or should the information be used by the operator? Research This project will utilise work previously undertaken by the University of Strathclyde which defines the characterisation of the wind resource to gain an understanding of possible ranges of availability of wind power, how it varies across Britain how it changes through periods of a few hours down to tens of minutes. This analysis will be used to gain an understanding of the possible scenarios of ‘final physical notifications’ (FPNs) that might be submitted by generation operators to the GBSO. Advanced software tools will enable these scenarios to be sampled and tested in terms of impact on system operation and security. This will generate simulations and statistical analysis of patterns of behaviours that can be identified across a large set of scenarios. This will identify clusters of behaviours that can be summarised by rules analogous to those used in expert systems.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Publications (none)
Final Report (none)
Added to Database 14/09/18