Apparatus and method for measuring and reporting the reliability of a power distribution system
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;
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; and
a reporting module coupled with said reliability processor and operative to receive said percentage and report said reliability as the number of continuous digits which are equal to the number 9 constituting the numeric percentage, starting from the most significant digit.
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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. Depending on the level of reliability required, the computation of the percentage may be altered to increase or decrease resolution.
120 Citations
81 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;
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; and
a reporting module coupled with said reliability processor and operative to receive said percentage and report said reliability as the number of continuous digits which are equal to the number 9 constituting the numeric percentage, starting from the most significant digit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 66, 67, 68, 69, 70, 71, 72, 73)
- IED”
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33. 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;
(b) computing a reliability of said electrical power distribution network as a percentage;
(c) counting the continuous number of digits equal to the number 9, starting with the most significant digit, in the numeric percentage; and
(d) reporting said number of 9'"'"'s. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 74, 75, 76, 77, 78, 79)
(e) logging said one or more parameters to a memory; and
wherein said reliability comprises a historical reliability of said electrical power distribution network computed as a function of said logged one or more parameters.
- IED”
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60. The method of claim 33, wherein (b) further comprises computing a first reliability for a first time period and a second reliability for a second time period, (d) further comprising reporting deviations of said second reliability from said first reliability.
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61. The method of claim 60, wherein said deviations are reported as pass or fail.
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62. The method of claim 33, further comprising
(e) receiving a reliability benchmark; wherein (b) further comprises computing a first reliability for a first time period and (d) further comprises reporting deviations of said first reliability from said reliability benchmark.
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63. The method of claim 62, wherein said deviations are reported as pass or fail.
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64. The method of claim 33, wherein (b) further comprises computing said reliability for a period time, said period of time including a portion of time when said IED is without power.
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74. The method of claim 33, wherein said IED comprises a relay.
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75. The method of claim 33, wherein said IED comprises a fault recorder.
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76. The method of claim 33, wherein said IED comprises a Remote Terminal Unit (“
- RTU”
).
- RTU”
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77. The method of claim 33, wherein said IED comprises a Programmable Logic Controller (“
- PLC”
).
- PLC”
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78. The method of claim 33, further wherein said IED is coupled with a backup battery.
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79. The method of claim 33, wherein said one or more parameters comprises at least one of system uptime, system downtime, disturbance time, and offline time.
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65. 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;
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; 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. - View Dependent Claims (80, 81)
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Specification