Apparatus and method for measuring and reporting the reliability of a power distribution system with improved accuracy
First Claim
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1. An intelligent electronic device (“
- IED”
) comprising;
a first interface operative to couple said IED with an electrical power distribution network;
a measurement component coupled with said first interface and operative to measure one or more parameters of said electrical power distribution network, said one or more parameters including disturbance time, total system downtime and total system runtime;
a reliability processor coupled with said measurement component and operative to receive said one or more parameters and compute a reliability value of said electrical power distribution network as a closest integer value to
and a reporting module coupled with said reliability processor and operative to receive said reliability value and report said reliability value as an indication of the reliability of said power distribution network.
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Abstract
An intelligent electronic device for measuring various power parameters from a electrical power distribution system is disclosed. The device is capable of measuring and reporting the reliability of the electrical power distribution system as the number of consecutive 9'"'"'s digits appearing in the computed percentage of system downtime versus system uptime. The number of 9'"'"'s is computed in a manner which does not incur inaccuracies at high resolutions due to digital floating point mathematical computation methods.
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Citations
31 Claims
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1. An intelligent electronic device (“
- IED”
) comprising;a first interface operative to couple said IED with an electrical power distribution network;
a measurement component coupled with said first interface and operative to measure one or more parameters of said electrical power distribution network, said one or more parameters including disturbance time, total system downtime and total system runtime;
a reliability processor coupled with said measurement component and operative to receive said one or more parameters and compute a reliability value of said electrical power distribution network as a closest integer value to
anda reporting module coupled with said reliability processor and operative to receive said reliability value and report said reliability value as an indication of the reliability of said power distribution network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- IED”
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16. In an intelligent electronic device (“
- IED”
) coupled with an electrical power distribution network, a method of reporting the reliability of said electrical power distribution network, the method comprising;(a) measuring one or more parameters of said electrical power distribution network, said one or more parameters including disturbance time, total system downtime and total system runtime;
(b) computing a reliability value of said electrical power distribution network as a closest integer value to
and(c) reporting said reliability value as an indication of the reliability of said power distribution network. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
- IED”
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30. An electrical watt-hour meter comprising:
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a first interface operative to couple said meter with an electrical power distribution network;
a measurement component coupled with said first interface and operative to measure one or more parameters of said electrical power distribution network, said one or more parameters including disturbance time, total system downtime and total system runtime;
a reliability processor coupled with said measurement component and operative to receive said one or more parameters and compute a reliability of said electrical power distribution network as a percentage according to the formula and a reporting module coupled with said reliability processor and a display and operative to receive said percentage and report said reliability as a percentage on said display and further operative to report said reliability as the number of continuous digits which are equal to the number 9 constituting said percentage, starting from the most significant digit. - View Dependent Claims (31)
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Specification