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Winnipeg, Canada

Manitoba Hydro is the electric power and natural gas utility in the province of Manitoba, Canada. Founded in 1961, it is a provincial Crown Corporation, governed by the Manitoba Hydro-Electric Board and the Manitoba Hydro Act. Today the company operates 15 interconnected generating stations. It has more than 527,000 electric power customers and more than 263,000 natural gas customers. Since most of the electrical energy is provided by hydroelectric power, the utility has low electricity rates. Stations in Northern Manitoba are connected by a HVDC system, the Nelson River Bipole, to customers in the south. The internal staff are members of the Canadian Union of Public Employees Local 998 while the outside workers are members of the International Brotherhood of Electrical Workers Local 2034.Manitoba Hydro headquarters in the downtown Winnipeg Manitoba Hydro Place officially opened in 2009. Wikipedia.

Gomez F.R.,University of Manitoba | Rajapakse A.D.,University of Manitoba | Annakkage U.D.,University of Manitoba | Fernando I.T.,Manitoba Hydro
IEEE Transactions on Power Systems | Year: 2011

The paper first shows that the transient stability status of a power system following a large disturbance such as a fault can be early predicted based on the measured post-fault values of the generator voltages, speeds, or rotor angles. Synchronously sampled values provided by phasor measurement units (PMUs) of the generator voltages, frequencies, or rotor angles collected immediately after clearing a fault are used as inputs to a support vector machines (SVM) classifier which predicts the transient stability status. Studies with the New England 39-bus test system and the Venezuelan power network indicated that faster and more accurate predictions can be made by using the post-fault recovery voltage magnitude measurements as inputs. The accuracy and robustness of the transient stability prediction algorithm with the voltage magnitude measurements was extensively tested under both balanced and unbalanced fault conditions, as well as under different operating conditions, presence of measurement errors, voltage sensitive loads, and changes in the network topology. During the various tests carried out using the New England 39-bus test system, the proposed algorithm could always predict when the power system is approaching a transient instability with over 95% success rate. © 2011 IEEE. Source

McDermid W.,Manitoba Hydro
IEEE Electrical Insulation Magazine | Year: 2013

This article provides a brief review of some of the papers that were published at the Electrical Insulation Conference during the period of John Tanaka's involvement. © 2006 IEEE. Source

Ashtari A.,University of Manitoba | Bibeau E.,University of Manitoba | Shahidinejad S.,University of Manitoba | Molinski T.,Manitoba Hydro
IEEE Transactions on Smart Grid | Year: 2012

Present-day urban vehicle usage data recorded on a per second basis over a one-year period using GPS devices installed in 76 representative vehicles in the city of Winnipeg, Canada, allow predicting the electric load profiles onto the grid as a function of time for future plug-in electric vehicles. For each parking occurrence, load profile predictions properly take into account important factors, including actual state-of-charge of the battery, parking duration, parking type, and vehicle powertrain. Thus, the deterministic simulations capture the time history of vehicle driving and parking patterns using an equivalent 10000 urban driving and parking days for the city of Winnipeg. These deterministic results are then compared to stochastic methods that differ in their treatment of how they model vehicle driving and charging habits. The new stochastic method introduced in this study more accurately captures the relationship of vehicle departure, arrival, and travel time compared to two previously used stochastic methods. It outperforms previous stochastic methods, having the lowest error at 3.4% when compared to the deterministic method for an electric sedan with a 24-kWhr battery pack. For regions where vehicle usage data is not available to predict plug-in electric vehicle load, the proposed stochastic method is recommended. In addition, using a combination of home, work, and commercial changing locales, and Level 1 versus Level 2 charging rates, deterministic simulations for urban run-out-of-charge events vary by less than 4% for seven charging scenarios selected. Using the vehicle usage data, charging scenarios simulated have no significant effect on urban run-out-of-charge events when the battery size for the electric sedan is increased. These results contribute towards utilities achieve a more optimal cost balance between: 1) charging infrastructure; 2) power transmission upgrades; 3) vehicle battery size; and 4) the addition of new renewable generation to address new electric vehicle loads for addressing energy drivers. © 2011 IEEE. Source

Suriyaarachchi D.H.R.,University of Manitoba | Annakkage U.D.,University of Manitoba | Karawita C.,TransGrid Solutions Inc. | Jacobson D.A.,Manitoba Hydro
IEEE Transactions on Power Systems | Year: 2013

This paper presents a comprehensive analysis of sub-synchronous interactions in a wind integrated power system to understand and mitigate them. The proposed procedure has two steps. In the first step, a frequency scan is performed to determine the presence of resonant frequencies in the sub-synchronous range. In the second step, a detailed small signal analysis is performed. Participation factors are used to identify the state variables that are involved in the interaction, and the controllability indices are used to determine the mitigation method. It is shown that the sub-synchronous interaction present in Type 3 wind turbine-generators connected to the grid through series compensated lines is an electrical resonance between the generator and the series compensated line which is highly sensitive to the rotor side converter current controller gains. © 1969-2012 IEEE. Source

Mcdermid W.,Manitoba Hydro
2013 IEEE Electrical Insulation Conference, EIC 2013 | Year: 2013

Since 1982 Manitoba Hydro has been making periodic electrical tests on the booms of aerial devices used by live line crews at 69-230 kV. In 1992 the test voltages were increased to allow use of the booms at 500 kVdc. At that time the importance of appropriate cleaning and recoating of the booms was emphasized. In 1997 and again in 2002 a FRP hot stick flashed over during live line work from a structure at 500 kVac. The related investigations and testing were initially focused on the FRP hot sticks, but were extended to include the booms of aerial devices. A flashover mechanism termed a 'fast flashover' was identified which can occur without prior leakage current and at relative humidity as low as 53% when the FRP surface is stressed with direct voltage of negative polarity. While corrective measures have been identified for the FRP hot sticks, work continues to address the reliability of booms for use at 500 kV dc. © 2013 IEEE. Source

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