Protection Performance Study for IEC61850 Process Bus Architecture of Substation Secondary Systems (AS3)
National Grid Electricity System Operator
National Grid TO Innovation Team
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Innovation Funding Incentive
Gas Distribution Networks
Maximising economic and effective utilisation of the transmission asset and
network is the key objective. The deployment of the technology advocated for
this IFI will allow ongoing substation secondary equipment retrofitting
(refurbishment) projects to proceed whilst limiting the duration and frequency of
circuit outages, required to facilitate the work. Once the new technology is
installed, secondary equipment renewals occurring mid-life in the primary plant
lifecycle can be undertaken in a safer, quicker and easier way with much
reduced outages of primary systems. At any time, secondary system upgrades
and modifications can be undertaken without a primary circuit outage. This will
also significantly reduce the outage period required for substation extensions.
In order to pursue this strategy, sufficient confidence must be demonstrated in
the philosophy and the new technology, hence the need for the IFI research. The
work is thus strategic, aligned to the AS3 project and is designed to understand
the impact of the emerging technology of process bus architecture on the
performance of protection and control equipments.
The key objective of this project is to investigate, quantify and optimise the level
of security, dependability and operating speed in secondary schemes using IEC
61850. As a precursor to wide deployment of the philosophy in AS3 project, it
must be ensured that the performance of the protection and control scheme
meets or exceeds that of its hardwired predecessors.