Monitoring device for a medium voltage overhead line
First Claim
1. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network;
- the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c);
each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line;
each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; and
in which the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer.
1 Assignment
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Accused Products
Abstract
A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network comprises three separate measurement sensors (2a, 2b, 2c), each being adapted for direct connection onto a medium voltage overhead line. Each of the measurement sensors has means to draw operating power from the medium voltage overhead line. The measurement sensors measured results may be combined for accurate measurement analysis.
247 Citations
126 Claims
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1. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network;
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the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c); each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line; each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; and in which the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer. - 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, 33, 34, 35, 45, 47, 48)
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36. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network;
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the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c); each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line; each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer; and in which the master sensor further comprises a processor (5) for processing data received from each of the slave sensors before transmitting electrical properties data onwards to the control centre computer. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 46, 49, 50, 51)
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52. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network,
the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c); -
each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line; each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer; each monitoring device has means to draw operating power directly from the magnetic field of the medium voltage overhead line; and each measurement sensor has means to draw operating power directly from the electric field of the medium voltage overhead line. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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64. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network,
the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c); -
each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line; each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer; and each measurement sensor has means to measure one or more of the instantaneous current, (IC), the peak current, (IPk) the root-mean square (RMS) current, (IRMS), the harmonic content of the current, and the phase of the current in its associated medium voltage overhead line. - View Dependent Claims (65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77)
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78. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network;
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the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c); each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line; each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer; and in which any three adjacent measurement sensors may be combined to form arbitrary triplets to form a monitoring device. - View Dependent Claims (79, 80, 81, 82, 83, 84, 85, 86, 87)
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88. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network;
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the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c); each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line; each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer; each measurement sensor has means to measure one or more of the instantaneous current, (IC), the peak current, (IPk), the root-mean square (RMS) current, (IRMS), the harmonic content of the current, and the phase of the current in its associated medium voltage overhead line; and in which one of the measurement sensors has means to receive the measurements from the other two measurement sensors and based on the received measurements and its own measured values has means to calculate one or more of the instantaneous balance current, IB, the zero sequence current, IO, and the ground current IG. - View Dependent Claims (89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100)
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101. A monitoring device (1) for monitoring the electrical properties of a medium voltage overhead line (3) in a medium voltage network, the monitoring device comprising means to measure the electrical properties of the medium voltage line and means to communicate the measured electrical properties to a control centre computer of the medium voltage network;
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the monitoring device comprises three separate measurement sensors (2a, 2b, 2c), each measurement sensor being adapted for direct and electrically insulated connection onto a separate medium voltage overhead line (3a, 3b, 3c); each measurement sensor having means to measure (4) the electrical properties of its respective medium voltage overhead line; each measurement sensor having means to communicate (6) with at least one of the control centre computer and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer; in which the three measurement sensors further comprise a master sensor and two slave sensors, the master sensor having means to communicate with the control centre, means to receive measurements from the slave sensors and a processor to process the measurements prior to transmission to the control centre. - View Dependent Claims (102, 103, 104, 105, 106, 107, 108, 109, 110, 111)
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- 112. A system for monitoring a medium voltage network comprising a plurality of medium voltage overhead lines, the system comprising a control centre computer (24) and a plurality of remote monitoring devices (1) distributed throughout the medium voltage network, each of the monitoring devices having means to measure the electrical properties of a medium voltage overhead line and means to communicate the measured electrical properties to the control centre computer, each monitoring device further comprises three measurement sensors (2a, 2b, 2c), each measurement sensor being mounted directly on a separate medium voltage overhead line (3a, 3b, 3c) to the other two measurement sensors and each measurement sensor having means to measure the electrical properties of its respective medium voltage line, each measurement sensor has communication means for communication with at least one of the control centre computer (24) and another measurement sensor, at least one of the measurement sensors having means to communicate with the control centre computer and in which the three measurement sensors further comprise a master sensor and two slave sensors, each of the slave sensors having means to communicate data to and from the master sensor and the master sensor having means to communicate with the control centre computer.
Specification