Patents Assigned to Manitoba Hydro
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Patent number: 10448492Abstract: A portable gradient control plate providing protection against touch potentials for electrical workers that can be carried and set-up at workplace conveniently. The gradient control plate has a perforated top plate for stability and extra foot grip minimizing slip hazards. It is supported by aluminum members thus elevating the foot above grade. The gradient control plate can be folded through hinges and equipped with a handle introducing portability into the apparatus. Each aluminum plate is secured by a locking mechanism and bonded by a braided copper wire to ensure equipotential between plates. Aluminum rods for attaching hotline clamps will be placed on each side of the gradient control plate for electrical connection to the power source.Type: GrantFiled: April 13, 2018Date of Patent: October 15, 2019Assignee: Manitoba HydroInventors: Chenyang Wang, Emerson Adajar
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Patent number: 9117172Abstract: Methods and computer implemented systems for evaluation and optimisation of methods used for forecasting, modeling, valuation, and decision-making, in staged resource planning are provided. Fundamentally, a universal comparator that accounts for perfect decision differencing (PERNOB) is determined and used for evaluating benefits associated with the use of prediction method-sets and decision-making method-sets in staged resource planning. According to one application, PERNOB is used to evaluate different prediction method-sets and decision-making method-sets and enable the selection of optimal method-sets corresponding to a given situation. According to another application, PERNOB is used to create an unbiased operational decision making environment through realistic re-valuation of system resource(s).Type: GrantFiled: May 29, 2013Date of Patent: August 25, 2015Assignee: Manitoba HydroInventors: Karl Reznichek, Jacob Quinton Snell
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Patent number: 6988816Abstract: An apparatus and method are provided for providing substantially uniform illumination. The apparatus includes an elongate reflector housing with an inner surface having a substantially constant profile in cross section which is generally concave, an optical center being defined at a geometric focus of the profile of the inner surface. In a preferred embodiment, substantially uniform illumination is achieved by providing an elongate light source positioned within the elongate reflector housing such that a geometric center of the light source is situated preferably spaced outwardly from the optical center of the housing, away from the inner surface of the housing.Type: GrantFiled: March 31, 2003Date of Patent: January 24, 2006Assignee: Manitoba Hydro-Electric BoardInventor: Ireneusz Witkowski
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Publication number: 20040251700Abstract: Safety devices and methods of use thereof are provided for improving electrical safety of insulative tools. In particular, the present invention provides a safety device for improving safety of an elongated insulative tool of a certain length with a substantially circular cross section having a cross sectional diameter and outer circumference, the device comprising a substantially circular disc with an inner opening for said elongated insulative tool to position therethrough, and said inner opening having a bore diameter that is substantially the same as or greater than the diameter of the elongated insulative tool. The present invention further provides novel methods of using through specific arrangement of the safety devices of the present invention on an elongated insulative tool.Type: ApplicationFiled: June 14, 2004Publication date: December 16, 2004Applicant: Manitoba Hydro-Electric BoardInventor: Karl Hesse
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Patent number: 6770810Abstract: An enclosure is provided for a high voltage electrical handling device, for example a transmission transformer, having a housing containing high voltage electrical componentry and at least one connector supported externally of the housing in communication with the high voltage electrical componentry. The connector is at a high voltage, having a surrounding electrical corona field. The enclosure includes walls connected to the housing and surrounding the connector at high voltage. The walls are spaced outside of the electrical corona field of the connector. Using an enclosure on high voltage equipment permits the equipment to be supported on the ground without the necessity of elaborate protection systems as found in typical electrical power switchyards or substations.Type: GrantFiled: February 12, 2003Date of Patent: August 3, 2004Assignee: The Manitoba Hydro-Electric BoardInventors: Ernst H. Wiebe, Caron Hopfner
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Publication number: 20030198052Abstract: An apparatus and method are provided for providing substantially uniform illumination. The apparatus includes an elongate reflector housing with an inner surface having a substantially constant profile in cross section which is generally concave, an optical center being defined at a geometric focus of the profile of the inner surface. In a preferred embodiment, substantially uniform illumination is achieved by providing an elongate light source positioned within the elongate reflector housing such that a geometric center of the light source is situated preferably spaced outwardly from the optical center of the housing, away from the inner surface of the housing.Type: ApplicationFiled: March 31, 2003Publication date: October 23, 2003Applicant: Manitoba Hydro-Electric BoardInventor: Ireneusz Witkowski
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Publication number: 20030168232Abstract: An enclosure is provided for a high voltage electrical handling device, for example a transmission transformer, having a housing containing high voltage electrical componentry and at least one connector supported externally of the housing in communication with the high voltage electrical componentry. The connector is at a high voltage, having a surrounding electrical corona field. The enclosure includes walls connected to the housing and surrounding the connector at high voltage. The walls are spaced outside of the electrical corona field of the connector. Using an enclosure on high voltage equipment permits the equipment to be supported on the ground without the necessity of elaborate protection systems as found in typical electrical power switchyards or substations.Type: ApplicationFiled: February 12, 2003Publication date: September 11, 2003Applicant: The Manitoba Hydro-Electric Board & Partner Technologies Inc.Inventors: Ernst H. Wiebe, Caron Hopfner