Device and method for detecting a street lamp fault
AssigneeEnel Distribuzione S.p.A.
InventorFabio Veroni
Life of this patent
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Abstract
A device for detecting a fault of at least one street lamp of a plurality of street lamps which are connectable in common to an AC power supply is proposed. The proposed device allows detecting whether a fault has occurred based on obtaining measures representative of the total active and reactive power supplied by the AC power supply to the plurality of street lamps, and detecting variations in these measures. Optionally, also the type of fault can be determined based on detected variations in the power measures.
Claims32
A device (100) for detecting a fault of at least one street lamp of a plurality of street lamps (20) which are connectable in common to an AC power supply (10), comprising:
- a section (120) for obtaining an active power measure (P) representative of the total active power (Pt) supplied by the AC power supply to the plurality of street lamps;
- and
- a section (130) for obtaining a reactive power measure (Q) representative of the total reactive power (Qt) supplied by the AC power supply to the plurality of street lamps;
- a section (140) for detecting a variation (ΔP) in the obtained active power measure (P);
- a section (150) for detecting a variation (ΔQ) in the obtained reactive power measure (Q);
- and
- a fault determination section (300) for determining whether a fault of at least one street lamp has occurred, using the detected variations (ΔP, ΔQ) in the obtained active power measure (P) and in the obtained reactive power measure (Q).
A method for detecting a fault of at least one street lamp (20) of a plurality of street lamps which are connected in common to an AC power supply (10), comprising the steps of:
- supplying power from the AC power supply to the plurality of street lamps;
- obtaining an active power measure (P) representative of the total active power (Pt) supplied by the AC power supply to the plurality of street lamps;
- obtaining a reactive power measure (Q) representative of the total reactive power (Qt) supplied by the AC power supply to the plurality of street lamps;
- detecting a variation (ΔP) in the obtained active power measure (P);
- detecting a variation (ΔQ) in the obtained reactive power measure (Q);
- and
- determining whether a fault of at least one street lamp has occurred, using the detected variations (ΔP, ΔQ) in the obtained active power measure (P) and in the obtained reactive power measure (Q).
Dependencies are inferred from the claim text.