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Published bySimon Holt Modified over 9 years ago
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Philippe Deschamps FR Author – Alpha 1 – Block 2 Barcelona 12-15 May 2003 1 Safety / cost - no compromise Global cost drives utilities's choices Regarding MV/LV substations, the scope of reasoning is moving from spare components to complete substations The questioning of architecture brings numerous advantages while reducing the costs But safety remains always a pre-requisite
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Philippe Deschamps FR Author – Alpha 1 – Block 2 Barcelona 12-15 May 2003 2 An innovative MV/LV substation architecture Compactness Ready to connect Single operating face No major change in operation habits Internal arc tested MV switchgear A smart transformer protection system to protect against all type of fault Transformer with integrated protection and switching LV Fuseboard Prefabricated LV connections MV switches Prefabricated MV connections
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Philippe Deschamps FR Author – Alpha 1 – Block 2 Barcelona 12-15 May 2003 3 A flexible architecture MV direct connection by sleeves –a full package substation MV connection by prefabricated connections –to intervene on every component individually
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Philippe Deschamps FR Author – Alpha 1 – Block 2 Barcelona 12-15 May 2003 4 Protection and switching integrated in the transformer Back up fuses for high current faults –internal arc tested tank thanks to upstream limiting fuses Vacuum switch (CEI60265-1) tripped by relays for other type of fault –no switching in oil
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Philippe Deschamps FR Author – Alpha 1 – Block 2 Barcelona 12-15 May 2003 5 All type of fault are taken into account Cause oil leakage overload arcing between turns LV short circuit major fault within tank Avoided consequences transformer destruction ageing of the transformer transformer tank tearing MV fuses melting transformer tank tearing Sensor oil level relay oil temperature relay tank overpressure relay LV over-current relay MV fuses
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