Automated configuration of a power monitoring system using hierarchical context

• US 20090066528A1
• Filed: 09/11/2007
• Published: 03/12/2009
• Est. Priority Date: 09/11/2007
• Status: Active Grant

• Current Assignee: Square D Company (Schneider Electric SE)
• Original Assignee: Square D Company (Schneider Electric SE)
• Inventors: Bickel, Jon Andrew, Carter, Ronald W., Curtis, Larry E.
• Granted Patent: US 7,639,129 B2
• Time in Patent Office: Days
• US Class Current: 340/657
• CPC Class Codes: G01D 2204/14 Displaying of utility usage with respect to time, e.g. for monitoring evolution of usage or with respect to weather conditions
• CPC Class Codes: G01D 2204/45 Utility meters networked together within a single building
• CPC Class Codes: G01D 2204/47 Methods for determining the topology or arrangement of meters in a network
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: G01R 19/2513 Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

Methods of automatically configuring a power monitoring system based upon the locations of the monitoring devices in a hierarchy representing the spatial interrelationships of the monitoring devices. The power monitoring system includes a host computer communicatively coupled to a plurality of monitoring devices arranged in a hierarchy in an electrical system. Software on the host computer may execute any or all of an alarm aggregation algorithm for aggregating multiple alarms based on device location; a feature distribution algorithm for enabling/disabling selected device features; an evaluation algorithm for evaluating device applications; a device check algorithm for detecting flawed data; a custom configuration algorithm for customized configuration of thresholds on device-by-device basis; a host computer configuration algorithm for configuring the host computer; a redundancy algorithm for verifying an electrical event; an alarm configuration algorithm for configuring device thresholds; and a configuration error checking algorithm for detecting nomenclature issues.

Claims

1. A method of automatically configuring a power monitoring system for alarm aggregation, comprising:

storing a representation of a hierarchy in a memory, said hierarchy being indicative of how a plurality of monitoring devices are logically linked to one another in said power monitoring system;

receiving, from at least two of said monitoring devices, respective alarm data indicative of an electrical characteristic being exceeded, said electrical characteristic being monitored by respective ones of said at least two monitoring devices;

determining whether said alarm data from each of said at least two monitoring devices were triggered within the same time period and whether said at least two monitoring devices are linked together in said hierarchy;

responsive to said alarm data from each of said at least two monitoring devices being triggered within a predetermined time period and responsive to said at least two monitoring devices being linked together in said hierarchy, automatically aggregating said alarm data from said at least two monitoring devices to form an aggregated alarm;

storing aggregated alarm data indicative of said aggregated alarm; and

communicating a representation of said aggregated alarm.

2. The method of claim 1, further comprising automatically determining said hierarchy.

3. The method of claim 2, wherein said automatically aggregating is carried out responsive to said at least two monitoring devices being indirectly linked together in said hierarchy.

4. The method of claim 2, wherein said automatically aggregating reduces the total number of alarms reported.

5. The method of claim 4, wherein said automatically aggregating causes said alarms provided by said at least two monitoring devices to be treated as a single alarm.

6. The method of claim 2, wherein said alarm data is indicative of an electrical event, said time period expiring upon the expiration of said electrical event.

7. A method for location-based customized configuration of a power monitoring system, comprising:

storing a representation of a hierarchy in a memory, said hierarchy being indicative of how a plurality of monitoring devices are linked to one another in said power monitoring system;

automatically determining which of said plurality of monitoring devices are connected to a load to produce a set of load-connected monitoring devices by determining the location of each of said set of load-connected monitoring devices in said hierarchy;

retrieving respective configuration parameters associated with each of said set of load-connected monitoring devices, said configuration parameters including an alarm threshold of an electrical characteristic monitored by said associated load-connected monitoring device;

configuring a first of said set of load-connected monitoring devices according to a first of said configuration parameters;

storing data indicative of said first of said configuration parameters in a memory of said first of said set of load-connected monitoring devices;

configuring a second of said set of load-connected monitoring devices according to a second of said configuration parameters that differs from said first of said configuration parameters; and

storing data indicative of said second of said configuration parameters in a memory of said second of said set of load-connected monitoring devices.

8. The method of claim 7, further comprising automatically determining said hierarchy.

9. The method of claim 7, wherein said plurality of monitoring devices each include a plurality of device features indicative of electrical characteristic data processed by a controller of said monitoring device, the method further comprising:

producing a first set of device features of one of said plurality of monitoring devices by selectively enabling some of said devices features of said one of said plurality of monitoring devices and disabling others of said device features of said one of said plurality of monitoring devices based upon the location of said one of said plurality of monitoring devices in said hierarchy; and

producing a second set of device features of another one of said plurality of monitoring devices by selectively enabling some of said device features of said another one of said plurality of monitoring devices and disabling others of said devices features of said another one of said plurality of monitoring devices based upon the location of said another one of said plurality of monitoring devices in said hierarchy, wherein said second set of device features differs from said first set of device features.

10. The method of claim 9, wherein said producing said first set of device features including receiving an input from a user indicative of which, if any, of said device features of said one of said plurality of monitoring devices to be enabled and which, if any, of said device features of said one of said plurality of monitoring devices to be disabled.

11. The method of claim 9, wherein said device features include at least one of flicker, transients, harmonic distortion, unbalance, voltage sags/swells, current sags/swells, voltage/current unbalance, or peak demands, and wherein said electrical characteristic data includes at least one of power, power factor, voltage, current, frequency, or distortion.

12. A method of automatically configuring a power monitoring system for redundant verification of an electrical event experienced on an electrical system monitored by said power monitoring system, comprising:

storing a representation of a hierarchy in a memory, said hierarchy being indicative of how a plurality of monitoring devices are linked to one another in said power monitoring system;

receiving result data from a set of said plurality of monitoring devices responsive to said electrical event, said result data indicating a characteristic of said electrical event;

determining a level of confidence in said result data by;

assigning a relatively higher statistical weight to those of said set of monitoring devices proximal to the source of said electrical event compared to those of said set of monitoring devices distal from said source, and

determining a statistical probability of said characteristic of said electrical event based on the number of monitoring devices in said set of monitoring devices; and

storing data indicative of said level of confidence.

13. The method of claim 12, further comprising automatically determining said hierarchy.

14. The method of claim 13, wherein said electrical event includes at least one of a transient event, a flicker event, a notch event, a voltage or current sag event, a voltage or current swell event, a voltage or current unbalance event, an over frequency event, an under frequency event, or a peak demand event, and said characteristic of said electrical event includes at least one of a type of electrical event, a magnitude, a duration, or a periodicity.