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Projects: Projects for Investigator
Reference Number NIA_NGET0187
Title Transient Voltage Stability of Inverter Dominated Grids and Options to Improve Stability
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 June 2016
End Date 01 June 2018
Duration 24 months
Total Grant Value £424,000
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_NGET0187
Objectives Create a PSCAD model of the equivalent GB transmission network. Demonstrate whether fast transient voltage instability is a significant concern for the GB system given likely future generation backgrounds. Identify at what levels of non-synchronous generation (NSG), fast transient instability would occur. Assess the likely costs of stability restrictions based on conventional approaches using synchronous generation and synchronous compensation to maintain stability. Identify whether the proposed Advanced Converter Control solution can improve system stability. Provide a programme of work to further develop, test and implement the proposed approach. The project will be successful if we : Create a functioning PSCAD model for the GB network that can be used for transient stability analysis. Determine whether the GB system is likely to be at risk to voltage instability with high levels of NSG. Identify the levels of NSG at which the GB network is likely to be susceptible to instability problems and the likely cost impacts of these restrictions if new mitigation approaches cannot be developed. Confirm whether the Advanced Converter Control approach could be an effective mitigation strategy. Identify how the improved control approach can be developed and implemented.
Abstract With increasing levels of inverter connected generation connected to the to the GB transmission system, there is evidence to suggest that the system will become susceptible to transient voltage instability in the event of system disturbances. Parts of the world with high levels of inverter-fed generation and few synchronous machines operating have already experienced equipment trips and damage to transmission equipment, and studies have shown a risk of widespread very fast transient voltage instability ( With National Grid’s support, a consortium including Transmission Excellence Ltd, HVDC Technologies and Power Technologies Ltd will carry out a programme of work to: 1) Demonstrate the extent to which fast transient voltage instability is likely to be a problem on the GB system in scenarios with high levels of inverter-connected generation and few synchronous machines in service. This analysis will use an Electromagnetic Transient (EMT) simulation tool, which uses very short time steps and so can capture features such as phase imbalance and waveform distortion which are important when grid systems are heavily dependent on inverter fed generation. The very rapid nature of the phenomena being investigated mean that traditional stability assessment tools (based on RMS values) are not suitable. 2) Develop and model an approach to improve stability and increase the levels of non-synchronous generation that can operate through an "Advanced Converter Control" approach. The work will be carried out in 2 phases over a 13 month period. EMT modelling will be undertaken using PSCAD, the industry-standard package for the modelling of HVDC and other large power inverters.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 17/12/18