CA2406444A1 - Apparatus and method for the measurement and monitoring of electrical power generation and transmission - Google Patents

Apparatus and method for the measurement and monitoring of electrical power generation and transmission Download PDF

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Publication number
CA2406444A1
CA2406444A1 CA002406444A CA2406444A CA2406444A1 CA 2406444 A1 CA2406444 A1 CA 2406444A1 CA 002406444 A CA002406444 A CA 002406444A CA 2406444 A CA2406444 A CA 2406444A CA 2406444 A1 CA2406444 A1 CA 2406444A1
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CA
Canada
Prior art keywords
transmission line
recited
magnetic flux
flux density
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002406444A
Other languages
French (fr)
Other versions
CA2406444C (en
Inventor
Sterling Lapinski
John Carroll Hill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Genscape Intangible Holding Inc
Original Assignee
Genscape, Inc.
Sterling Lapinski
John Carroll Hill
Genscape.Com, Inc.
Genscape Intangible Holding, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Genscape, Inc., Sterling Lapinski, John Carroll Hill, Genscape.Com, Inc., Genscape Intangible Holding, Inc. filed Critical Genscape, Inc.
Publication of CA2406444A1 publication Critical patent/CA2406444A1/en
Application granted granted Critical
Publication of CA2406444C publication Critical patent/CA2406444C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/142—Arrangements for simultaneous measurements of several parameters employing techniques covered by groups G01R15/14 - G01R15/26
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/133—Arrangements for measuring electric power or power factor by using digital technique

Abstract

An apparatus and method in accordance with the present invention allows for a determination of the amount and direction of electric power being produced b y a particular high voltage electric power transmission line. The present invention consists of a monitoring device (10) consists of a weatherproof housing (12) containing the electric potential and magentic field measuremen t components and a second weatherproof housing (14) containing the necessary processing and communications somponents, including a power supply and data transmission equipment.

Claims (23)

1. An apparatus for measuring electric potential and magnetic flux density associated with an electric power transmission line, comprising:
a first sensor for outputting a voltage proportional to the net electric potential associated with said transmission line; and a second sensor responsive to a first vector component of the magnetic flux density associated with said transmission line and outputting a voltage proportional to the time rate of change of the net magnetic flux density generated by current flowing through said transmission line.
2. An apparatus as recited in claim 1, and further comprising:
a third sensor responsive to a second vector component of the magnetic flux density associated with said transmission line and outputting a voltage proportional to the time rate of change of the net magnetic flux density generated by current flowing through said transmission line.
3. An apparatus as recited in claim 1, wherein said first sensor comprises a conducting plate operably connected to a operational amplifier circuit, thereby creating a capacitive voltage divider for outputting a voltage proportional to the net electric potential associated with said transmission line.
4. An apparatus as recited in claim 2, wherein said second sensor is oriented to respond to a substantially horizontal vector component of the magnetic flux density.
5. An apparatus as recited in claim 4, wherein said third sensor is oriented to respond to a substantially vertical vector component of the magnetic flux density.
6. An apparatus as recited in claim 2, wherein said second sensor comprises a coil with its axis oriented in the direction of said first vector component of the magnetic flux density, the voltage across said coil being proportional to the time rate of change of the net magnetic flux density generated by current flowing through said transmission line.
7. An apparatus as recited in claim 6, wherein said third sensor comprises a coil with its axis oriented in the direction of said second vector component of the magnetic flux density, the voltage across said coil being proportional to the time rate of change of the net magnetic flux density generated by current flowing through said transmission line.
8. An apparatus as recited in claim 2, and further comprising respective amplification and filtration circuits for converting each of the output voltages associated with each sensor into a representative numerical value; and a memory register for storing said representative numerical values.
9. An apparatus as recited in claim 8, and further comprising a transceiver for transmitting said representative numerical values from said memory register to a central processing facility.
10. An apparatus as recited in claim 2, wherein said first, second, and third sensors are stored in a weatherproof housing.
11. An apparatus as recited in claim 10, and further comprising a battery for powering the sensors of the apparatus.
12. An apparatus as recited in claim 11, wherein said battery is continuously recharged by a solar panel array.
13. An apparatus as recited in claim 9, wherein said first, second, and third sensors are stored in a first weatherproof housing, and said transceiver is stored in a second weatherproof housing.
14. An apparatus as recited in claim 13, and further comprising a battery for powering the sensors of the apparatus, said battery being stored in said second weatherproof housing.
15. An apparatus as recited in claim 14, wherein said battery is continuously recharged by a solar panel array.
16. A method for monitoring the electric power transmission through one or more electric power transmission lines and communicating such electric power transmission information, comprising the steps of:

(a) measuring the electric potential and at least one vector component of the magnetic flux density associated with each said transmission line to generate a data set;

(b) transmitting each said data set to a central processing facility;

(c) performing a computational analysis on each said data set to determine the amount of current and the direction of current flowing through each said transmission line, and then computing the power associated with each said transmission line; and (d) communicating said power transmission information to an end user.
17. A method as recited in claim 16 in which the measuring of the electric potential and the vector components of the magnetic flux density for a particular transmission line is accomplished by:

a first sensor for outputting a voltage proportional to the net electric potential associated with said transmission line;
a second sensor responsive to a first vector component of the magnetic flux density associated with said transmission line and outputting a voltage proportional to the time rate of change of the net magnetic flux density generated by current flowing through said transmission line; and a third sensor responsive to a second vector component of the magnetic flux density associated with said transmission line and outputting a voltage proportional to the time rate of change of the net magnetic flux density generated by current flowing through said transmission line.
18. A method as recited in claim 16 in which the transmission of each data set to the central processing facility is accomplished through a landline network.
19. A method as recited in claim 16 in which the transmission of each data set to the central processing facility is accomplished through a wireless network.
20. A method as recited in claim 17 in which the outputted voltage associated with each sensor is passed through a respective amplification and filtration circuit to amplify the respective voltages and remove extraneous noise prior to the transmission of the data set.
21. A method as recited in claim 20, in which the computational analysis comprises the following sub-steps:

correcting each said data set to compensate for predictable errors relating to the geometry of the particular physical arrangement of the conductors of the transmission line;
correcting each said data set to compensate for predictable errors relating to the sensors and their interaction with the respective amplification and filtration circuits;
calculating the complex coefficients relating the measured magnetic flux density to the current through the conductors of the transmission line as determined by the geometry of the particular physical arrangement of the conductors of the transmission line;
solving a set of linear algebraic equations relating the magnetic flux density to the current through the conductors of the transmission line;

combining the phase of the measured electric potential with the phase of the measure magnetic flux density to determine the phase angle of the current through the transmission line with respect to the voltage on the transmission line;
calculating the power factor on the transmission line; and determining the magnitude and direction of the real and reactive power on the transmission line.
22. A method as recited in claim 16 in which the compiled power generation information associated with each said transmission line is communicated to the end user through a global computer network.
23. A method as recited in claim 22 in which said global computer network is the Internet, said compiled power generation information being communicated and displayed through a conventional Internet browser.
CA2406444A 2000-04-13 2001-04-13 Apparatus and method for the measurement and monitoring of electrical power generation and transmission Expired - Lifetime CA2406444C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US19672000P 2000-04-13 2000-04-13
US60/196,720 2000-04-13
US22613000P 2000-08-18 2000-08-18
US60/226,131 2000-08-18
PCT/US2001/012328 WO2001079872A1 (en) 2000-04-13 2001-04-13 Apparatus and method for the measurement and monitoring of electrical power generation and transmission

Publications (2)

Publication Number Publication Date
CA2406444A1 true CA2406444A1 (en) 2001-10-25
CA2406444C CA2406444C (en) 2010-11-09

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CA2406444A Expired - Lifetime CA2406444C (en) 2000-04-13 2001-04-13 Apparatus and method for the measurement and monitoring of electrical power generation and transmission

Country Status (4)

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US (2) US20010040446A1 (en)
AU (1) AU2001253541A1 (en)
CA (1) CA2406444C (en)
WO (1) WO2001079872A1 (en)

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US20030098683A1 (en) 2003-05-29
WO2001079872A1 (en) 2001-10-25
AU2001253541A1 (en) 2001-10-30
US20010040446A1 (en) 2001-11-15
US6771058B2 (en) 2004-08-03

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