Project description
Anti-islanding protection aims to trip an embedded generator/s on loss of grid connection to prevent the generator/s sustaining an “island”. An islanded condition can be unsafe, unless the generating system and associated protection and control have been specifically designed for islanding.Existing topology-based anti-islanding schemes need to take in the status of all circuit breakers that, when tripped, can cause an island to form. This is expensive to implement on the meshed 66kV network as there can be dozens of circuit breakers that are required to be monitored. The resulting intertripping matrix can become very complex and difficult for operators to interpret, leading to maloperations of the scheme. There is also added complexity when altering the topology of the network as part of future upgrades, or when isolating circuit breakers for maintenance using unmonitored switches, which can defeat the inter-tripping scheme. This project aims design of the the island detection logic (likely in SEL-2240 phasor data concentrator). It use the Omicron test set and relay lab to test the performance and stability of the island detection logic.
Industry involvement
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