Patent
Power supply magnetic shunt for transmission line sensor module
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TLDR
A self-contained sensor module mounted on a power transmission line is capable of measuring various parameters such as line current, voltage, conductor temperature and ambient temperature as mentioned in this paper, which are processed by sensor electronics which digitize and periodically transmit the values to a ground receiver.Abstract:
A self contained sensor module mounted on a power transmission line. The module is capable of measuring various parameters such as line current, voltage, conductor temperature and ambient temperature. The parameter values are processed by sensor electronics which digitize and periodically transmit the values to a ground receiver. The module power supply is coupled to the transmission line conductor by a transformer. The line conductor extends through a magnetic core in the module housing. A secondary shunt magnetic core is provided to limit induction of high voltages as a result of excess current flowing through the transmission line conductor.read more
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Patent
Direct current power supply
TL;DR: In this paper, a variable impedance device coupled substantially in series with the current path established between the source of a.c. power and a functional load coupled to the source is used to provide a relatively low stabilized d.c voltage from a relatively high voltage primary power source without the use of a transformer.
Patent
Line mounted apparatus for measuring line potential
TL;DR: In this article, a self-contained hot stick mounted radio transmitting module is used to measure the potential difference between ground and the power conductor of an electrical transmission line, which is measured with an operational amplifier in an integrating configuration to convert the leakage current from the module to ground into a proportional voltage from a low impedance source.
Patent
Means for sensing conditions in high potential region and for transmitting such intelligence by light means to low potential regions
Elijah R Perry,James C W Ransom +1 more
TL;DR: In this paper, the authors present an approach to measure an electrical characteristic of a high voltage line and transmit a generated signal corresponding to this characteristic to a receiver at earth potential by producing a variable radiation signal, whose intensity is a function of the generated signal and which is transmitted by a fibre optic dielectric transmission means.