Apparatus and method for monitoring power and current flow

• US 7,088,090 B2
• Filed: 03/08/2005
• Issued: 08/08/2006
• Est. Priority Date: 06/14/1999
• Status: Expired due to Term

• Current Assignee: Genscape Intangible Holding, Inc. (Daily Mail & General Trust Plc)
• Original Assignee: Genscape Intangible Holding, Inc. (Daily Mail & General Trust Plc)
• Inventors: Staats, Preston Trent
• Primary Examiner(s): Nguyen, Vinh P.
• Application Number:
  US11/075,160
• Publication Number:
  US 20050162148A1
• Time in Patent Office: 518 Days
• Field of Search: 324126-127, 324/142, 324/117.R, 340/870.02, 340/870.03, 702 57- 60
• US Class Current: 324/126
• CPC Class Codes: G01R 15/142 Arrangements for simultaneous measurements of several parameters employing techniques covered by groups G01R15/14 - G01R15/26
• CPC Class Codes: G01R 21/1331 Measuring real or reactive component, measuring apparent energy

Abstract

A method and system for remotely monitoring the magnitude and direction of net electrical power and current flow to or from a power generation facility over the transmission lines operably connected thereto allows for the estimation of the power output of that facility. The method includes detecting and measuring the magnetic field emanating from the monitored transmission line(s), and detecting a signal synchronized to the power system frequency, typically the electric field, emanating from the transmission lines. The method further includes evaluating, storing, and transmitting the data on the electromagnetic (EM) fields that are recorded.

Claims

1. A system for monitoring information relating to a transmission line of a power generation facility, comprising:

a central computing site; and

a monitor positioned at a location substantially remote to and at a predetermined distance from said transmission line, and without proximate access to said transmission line, said monitor including

a magnetic transducer for sensing a magnetic field associated with said transmission line,

an electric transducer for sensing an electric field associated with said transmission line,

a processor for receiving signals from the magnetic and electric transducers and generating data representative of the magnitude and relative phase of the respective magnetic and electric fields, and

a means for transmitting said data to the central computing site.

2. The system as recited in claim 1, wherein data received by said central computing site is processed to determine a net flow of current through said transmission line.

3. The system as recited in claim 2, wherein information relating to the net flow of current through said transmission line is communicated to one or more end users.