Single-phase equipotential self-powered low-cost easy-to-install recloser
AssigneeEnergisa S/A
InventorsCelso Garcia Lellis Junior, Ayres Antonio Paes De Oliveira
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Abstract
The invention relates to a single-phase, equipotential, self-powered recloser with a load life of more than 20 years, for installing in 15 KV medium-voltage networks, directly on Matthews-type fuse bases, using hooksticks, and without requiring the interruption of the energy supply. Said recloser uses a bistable electromagnetic actuator that controls a vacuum bulb for interrupting the current in the event of a fault. It stores energy in ultracapacitor banks which receive the first charge by means of an induction coil.
Claims18
A SINGLE-PHASE, EQUIPOTENTIAL, LOW-COST, EASY-TO-INSTALL RECLOSER, characterized by the fact that:
- it uses, for its installation, Matheus-type fuse bases (1), pre-installed in the field;
- it uses, for disconnection, a vacuum ampoule (2), triggered by a bistable electromagnetic actuator (7);
- it is equipotential;
- it is self-powered;
- it stores the energy captured in ultracapacitor banks (8a) (9a), which allows it to operate for long periods of “permanent fault”;
- and
- it transfers the mechanical movement of the cutting maneuvering rod (17) to the mechanical safety lock (16) of the bistable electromagnetic actuator (7) using magnetic fields generated by movements of the magnets (16a) (16b) (16c), avoiding holes in the bottle (21) for the passage of moving parts, and allowing for its use in places with high levels of moisture and/or dust (IP67).
A single-phase, equipotential recloser, comprising:
- a vacuum ampule, comprising:
- a fixed output terminal at a first end;
- and
- a movable output terminal at a second end, opposite to the first end;
- a bistable electromagnetic actuator configured to trigger the vacuum ampule;
- an ultracapacitor bank configured to store captured energy,
- wherein the fixed output terminal is configured to connect to a fuse base at a first connection terminal of the fuse base and the movable output terminal is configured to connect to the fuse base at a second connection terminal of the fuse base.
An assembly, comprising:
- a fuse base, comprising:
- a first connection terminal;
- and
- a second connection terminal;
- and
- a single-phase, equipotential recloser, comprising:
- a vacuum ampule, comprising:
- a fixed output terminal at a first end;
- and
- a movable output terminal at a second end, opposite to the first end;
- a bistable electromagnetic actuator configured to trigger the vacuum ampule;
- an ultracapacitor bank configured to store captured energy,
- wherein the fixed output terminal is configured to connect to the fuse base at the first connection terminal of the fuse base and the movable output terminal is configured to connect to the fuse base at the second connection terminal of the fuse base.
Dependencies are inferred from the claim text.