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Reference Number NIA_NGTO017
Title Voltage source converter based series controlled impedance technology
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 September 2018
End Date 01 May 2019
Duration ENA months
Total Grant Value £500,000
Industrial Sectors Power
Region London
Programme Network Innovation Allowance
 
Investigators Principal Investigator Project Contact , National Grid Electricity Transmission (100.000%)
  Industrial Collaborator Project Contact , National Grid plc (0.000%)
Web Site https://smarter.energynetworks.org/projects/NIA_NGTO017
Objectives A detailed simulation study will be carried out to address the risks related to dynamic interactions, power quality and interference with protection settings. At first, the desktop based electromagnetic transient (EMT) studies will be carried out. EMT studies provide a good idea about the control behavior of the device but they do not consider the limitations of its control hardware. Therefore, a further validation using real-time simulations will be performed on a real time digital simulator (RTDS) platform. For addressing the risk related to cyber security, a cyber penetration testing will be carried out in lab environment. Work Package 1: Simulation studies1) Development of Network model for EMT studiesA reduced network model will be created for EMT simulations in PSCAD and RSCAD. The control system for the dominant devices in the kept network will be represented in detail to capture the dynamic interactions. All the transmission lines and cables will be represented by frequency dependent models. The performance of the reduced equivalent model will be validated against the original network model, which will include both dynamic and steady state performance. 2) PSCAD Desktop based dynamic interaction studiesA detailed dynamic interaction study will be performed using the reduced network model and VSC based SCI device PSCAD model. Various dynamic events such as different type of faults, different operating modes and power levels will be simulated to understand the dynamic interactions. If dynamic interactions are observed, VSC based SCI device control tuning may be performed to damp the oscillations resulted from the dynamic interactions.3) PSCAD Desktop based protection-coordination studiesVarious fault cases will be simulated and the impact of VSC based SCI device protective bypass function will be assessed on the network protection settings. 4) RTDS studiesThe real-time behavior of the device control system will be assessed using RTDS studies. A subset from desktop based simulation studies will be performed in RTDS and the results will be validated against PSCAD benchmark. Work Package 2: Cyber resilience testingA cyber Penetration testing will be carried out in lab environment. The impact of a potential cyber breach on the electrical networks will also be estimated The project will undertake an in-depth system evaluation to fully model and demonstrate system performance under a full range of credible and extreme scenarios to assess the risks associated with VSC based SCI technology.
Abstract A relatively new alternative solution to provide control over power flow has been developed using voltage source converter (VSC) in each phase. The VSC based series controlled impedance (SCI) technology has potential to offer the following advantages: • Cheaper option than QB• Optimized deployments of the technology can unlock more system capacity than traditional solutions such as QBs• Provides more controllability• Easy mobile redeployment• Wireless controlThe project will serve as a first step towards building our understanding about application of these VSC based SCI devices.
Publications (none)
Final Report (none)
Added to Database 09/11/22