Hinge clamp for securing a sensor module on a power transmission line
First Claim
1. Apparatus for mounting a sensing device on a power line conductor comprising:
- a generally toroidal shaped housing for containing said sensing device, said housing comprising two semi-annular housing sections with opposed clamping faces;
a hinge mechanism comprising a pair of hinge pins for connecting each of said housing sections to said mechanism and for enabling said sections to move to an open position to admit said power line conductor and for enabling said sections to move to a closed position about said conductor;
a pair of section operating members each attached between one of said hinge pins and a clamping face of one of said sections;
a loop of cable mounted about said section operating members where said operating members attach to said opposed clamping faces; and
cable pulling means for pulling said loop of cable and drawing said section operating members together whereby said opposed faces move toward each other and said housing moves toward a closed position.
2 Assignments
0 Petitions
Accused Products
Abstract
Self contained radio transmitting state estimator modules are mounted on power conductors on both sides of power transformers in electrical substations and on power conductors at various places along electrical transmission lines. They are electrically isolated from ground and all other conductors. These modules are capable of measuring current, voltage, frequency and power factor (or the fourier components thereof) the temperature of the conductor, and the temperature of the ambient air. The modules transmit these parameters to local receivers. The receivers are connected by an appropriate data transmission link, to a power control center which allows determination of the state of the power system. Appropriate control signals are transmitted back to the electrical switchgear of the system to bring it to the appropriate optimum state. Direct local control may also be effected, for example, the prevention of overloading a transformer. A "donut" state estimator module comprises a novel hot stick operated hinge clamp and a novel voltage sensor which measures the current between an isolated capacitor plate and ground. The donut measures the fourier components of voltage and current over a number of cycles and transmits the components to the local receiver. The local receiver derives the desired electrical measurements such as voltage, current, power factor, power, and reactive power and transmits them to local or remote control stations. Up to 15 donut modules may transmit on a single channel to a single local receiver. Each transmits at intervals which are an integral number. The intervals between transmissions of all donuts do not have a common factor and the average interval is the desired transmission rate. Each donut uses the zero crossover of current of its conductor to establish its transmission interval. The system is self-calibrating using known reference signals within the donut module.
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Citations
10 Claims
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1. Apparatus for mounting a sensing device on a power line conductor comprising:
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a generally toroidal shaped housing for containing said sensing device, said housing comprising two semi-annular housing sections with opposed clamping faces; a hinge mechanism comprising a pair of hinge pins for connecting each of said housing sections to said mechanism and for enabling said sections to move to an open position to admit said power line conductor and for enabling said sections to move to a closed position about said conductor; a pair of section operating members each attached between one of said hinge pins and a clamping face of one of said sections; a loop of cable mounted about said section operating members where said operating members attach to said opposed clamping faces; and cable pulling means for pulling said loop of cable and drawing said section operating members together whereby said opposed faces move toward each other and said housing moves toward a closed position. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Apparatus for clamping a two-section housing around a power conductor comprising:
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two housing sections with opposed clamping faces; a hinge mechanism comprising a pair of hinges for connecting each of housing sections to said hinge mechanism for movement of said housing sections toward each other and away from each other; a pair of secton operating members each attached between one of said hinges and one of said housing sections at said clamping face; means coupled to said pair of section operating members for pulling said members together whereby said housing sections are pulled together to a closed position about said conductor; means coupled to said pair of section operating members for pushing said members apart whereby said housing sections are pushed apart to an open position; and means for controlling said means for pulling and means for pushing. - View Dependent Claims (8, 9, 10)
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Specification