Oscillation and Regional RoCoF Monitoring

Project summary

This project will provide monitoring capabilities, observing two dynamic phenomena in the GB power system – oscillatory behaviour and regional Rates of Change of Frequency (RoCoF) trends.

Name Status Project reference number Start date Proposed End date
Oscillation and regional RoCoF monitoring Live NIA2_NGESO052 Feb 2024 Feb 2026
 

 

Strategy theme Funding mechanism Technology Expenditure
Net zero and the energy system transition NIA_RIIO-2 Network Automation £295,000

 

Third Party Collaborators Preceding Projects
Durham University NIA2_NGESO018, NIA_NGET0161, NIA_NGET0188

 

Summary

It will utilise data from high resolution eXtensible Measurement Unit (XMU) devices, combined with analytical capabilities to provide insights into the behaviour of the transmission system. 

It is a desktop study that will use data gathered from the XMU devices and historic events to provide insights into the two dynamic phenomena and will allow us to assess the effectiveness of XMU devices in monitoring system behaviour. 

Benefits

Studying the two dynamic phenomena within this project could bring several benefits, including: 

  • Identification of potential areas of the network where system robustness may need addressing, helping identify stability issues before they become significant. 
  • Reduce the risk of oscillatory behaviour on the system, leading to potential cascade impacts and risks to system security. 
  • Allow the ESO to gain insights on the risk of RoCoF Loss of Mains Protections (LoMP) trips. In particular, the risk from residual un-changed RoCoF protection devices that may still need changing as part of the LoMP program. 
  • Assess the feasibility of XMU devices providing system insights and expanding the situational awareness obtained from the Supervisory Control and Data Acquisition (SCADA) system and Phasor Measurement Units (PMU) devices. 

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