Edmonton, Canada
Edmonton, Canada

ATCO Electric is an electric utility company. Based in Edmonton, Alberta, ATCO Electric transmits and distributes electricity to two thirds of Alberta, namely in north and east-central Alberta, as well as communities in the Yukon and North West Territories.ATCO Electric is owned by Canadian Utilities, which is in turn controlled by ATCO, and its main subsidiaries are: ATCO Electric Yukon Northland Utilities, with its subsidiary Northland Utilities .ATCO Electric is one of four electrical transmission and distribution utilities in Alberta: EPCOR, formerly Edmonton Power FortisAlberta Inc., owned by Fortis Inc. AltaLink, based in Calgary Wikipedia.


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Mazin H.E.,University of Alberta | Nino E.E.,ATCO Electric | Xu W.,University of Alberta | Yong J.,China University of Technology
IEEE Transactions on Power Delivery | Year: 2011

This paper presents a measurement technique to determine the harmonic sources and impedances of residential houses at the utility metering point. The results are then applied to quantify harmonic and current contributions of the residential premises. Four residential houses are investigated by using the proposed method. The characteristics of the load-side harmonic impedances and sources are studied, and their harmonic contributions are determined. The results show that voltage distortion is affected mainly by background harmonic sources that exist within the supply system. The current harmonics are affected by the residential loads and the supply system. © 2011 IEEE.


News Article | December 22, 2016
Site: www.prnewswire.co.uk

According to Future Market Insights' report titled "High Voltage Direct Current (HVDC) Transmission System Market: Global Industry Analysis and Opportunity Assessment 2016-2026," the global market for high voltage direct current transmission systems, which is now valued at US$ 6,191.8 Mn, is likely to reach US$ 14.36 Bn in market value by the end of 2026 - attaining expansion at a CAGR of 8.8%. According to the report, North America, Western Europe and Asia Pacific excluding Japan (APEJ) are the leading markets for HVDC transmission systems globally. Key market players include ABB Ltd., TransGrid Solutions Inc., Siemens AG, Prysmian SpA, Toshiba Corporation, General Electric Co., Hitachi Ltd., Abengoa SA, and ATCO Electric Ltd. Key Research Findings from Future Market Insights' Report on the Global HVDC Transmission System Market HVDC transmission is expected to become more efficient due to rampant popularity of advanced valve components such as insulated gate bipolar transistors (IGBT). Several such components that avert transmission failures can be categorised under the solution-based components. By 2026, global revenue share of such components is forecast to be about 60%, while revenues from sales of service-based HVDC transmission components will incur rapid growth at a 10.5% CAGR. According to a comprehensive cost analysis in the research report, high installation costs are a major drawback for adoption of high-voltage direct current over other electric transmission systems. HVDC transmission components are expensive and need to be replaced if damaged. With respect to deployment of HVDC transmission systems, subsea deployment is expected to gain adoption due to its comparatively lower installation cost and a rise in demand for offshore power distribution. By 2026, the 33% market value share attributed by overhead deployment model is likely to marginally surpass subsea deployment's share by 5 percent or less. Preview Analysis on Global High Voltage Direct Current (HVDC) Transmission System Market Segmentation By System Component - Solutions (AC & DC Harmonic Filters, Converters, DC Lines, Circuit Breakers and Others), Services; By Technology - LCC, VSC and Others; By Deployment - Overhead, Underground, Subsea and Combination; By Power Rating - Below 1000 Mws, 1001 To 2000 Mws and 2001 Mws & Above: http://www.futuremarketinsights.com/reports/high-voltage-direct-current-hvdc-transmission-systems-market Manufacturers of HVDC systems incur a competitive edge in the power supply industry as these systems provide efficient transmission with optimal electricity consumption. To extend the environmental impact of HVDC transmission systems, manufacturers are adopting renewable or "clean" energy for transmission and reducing pollution arising from unwanted electromagnetic energy emanating from electrical lines. In the power distribution industrial sector, managing the impact of energy transmission on the environment is now being considered with an utmost regard. A recent update on companies and governments undertaking steadfast measures on clean energy includes the approval of the US Department of Justice for the installation of a 3GW HVDC transmission system for the country's TransWest Express Transmission Project. A power ratings analysis included in the report indicates that power distribution above 2,000 MWs will witness a rise in market value share, accounting for nearly 40% of the global HVDC transmission system market value by the end of 2026. Owing to such power consumption trends, companies such as General Electric Co. and ABB Ltd. among others, have included Ultra high-voltage direct current (HVDC) transmission systems as part of their original offerings. Speak with Analyst for any Report Related Quires: http://www.futuremarketinsights.com/askus/rep-gb-1209 Lack of proficient engineers to effectively operate as well as maintain HVDC transmission systems remains a longstanding challenge. Prominence of line-commutated converter (LCC) and voltage-source converter (VSC) technologies further necessitates the need for highly-qualified engineers. Comparatively, by the end of 2026, VSCs will be the dominant technology in the global market, accounting for nearly US$ 9 Bn in revenues. Future Market Insights (FMI) is a leading market intelligence and consulting firm. We deliver syndicated research reports, custom research reports and consulting services which are personalized in nature. FMI delivers a complete packaged solution, which combines current market intelligence, statistical anecdotes, technology inputs, valuable growth insights and an aerial view of the competitive framework and future market trends.


News Article | November 14, 2016
Site: www.marketwired.com

CU Inc. announced today that it will issue $375,000,000 of 3.763% Debentures maturing on November 19, 2046, at a price of $100.00 to yield 3.763%. This issue was sold by BMO Nesbitt Burns Inc., RBC Dominion Securities Inc., TD Securities Inc., Scotia Capital Inc. and CIBC World Markets Inc. Proceeds from the issue will be used to finance capital expenditures, to repay existing indebtedness, and for other general corporate purposes of ATCO Electric Ltd. and ATCO Gas and Pipelines Ltd. CU Inc. is a wholly-owned subsidiary of Canadian Utilities Limited, an ATCO Company. CU Inc. is an Alberta-based corporation with approximately 4,200 employees and assets of $15 billion; comprised of rate regulated utility operations in pipelines, natural gas and electricity transmission and distribution. More information about CU Inc. can be found on the Canadian Utilities Limited website at www.canadianutilities.com. Certain statements contained in this news release may constitute forward-looking information. Forward-looking information is often, but not always, identified by the use of words such as "anticipate", "plan", "estimate", "expect", "may", "will", "intend", "should", and similar expressions. Forward-looking information involves known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking information. The Company's actual results could differ materially from those anticipated in this forward-looking information as a result of regulatory decisions, competitive factors in the industries in which the Company operates, prevailing economic conditions, and other factors, many of which are beyond the control of the Company. The Company believes that the expectations reflected in the forward-looking information are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking information should not be unduly relied upon. Any forward-looking information contained in this news release represents the Company's expectations as of the date hereof, and is subject to change after such date. The Company disclaims any intention or obligation to update or revise any forward-looking information whether as a result of new information, future events or otherwise, except as required by applicable securities legislation.


Ni R.,University of Alberta | Ni R.,ATCO Electric | Li Y.W.,University of Alberta | Zhang Y.,University of Alberta | And 2 more authors.
IEEE Transactions on Power Electronics | Year: 2014

To mitigate the line current harmonics of a high-power current source rectifier (CSR) system, the selective harmonic elimination (SHE) scheme is frequently used due to its low switching frequency and superior harmonic performance. However, the SHE scheme only focuses on the harmonics generated by the converter itself. It cannot cope with the line current harmonics caused by the background grid voltage harmonics. In this paper, a selective harmonic compensation scheme using the virtual impedance concept (VI-SHC) is presented. This method compensates for the preexisting grid background harmonics using only the line current measurement, and provides superior line current harmonic performance. The proposed method does not require measuring the grid voltage harmonics (which are typically low), does not rely on an accurate CSR system model, and therefore is very robust for practical implementation. Thi$s$ PWM control scheme has been verified by real-time experiments on a CSR prototype. © 1986-2012 IEEE.


Wang Y.F.,ATCO Electric | Li Y.W.,University of Alberta
2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012 | Year: 2012

Single-phase grid-connected converters are widely used in many applications, such as photovoltaics, fuel cells, active power filters, etc. An important topic for the development of their control schemes is ac signal detection, such as grid phase detection for grid-interfacing inverters, and harmonic detection for harmonic compensation devices. Since only one ac signal is available, the task is more difficult than in three-phase systems. Among the existing methods, the frequency-domain ones are known to have a one-cycle delay and heavier computational burden. Meanwhile, the time-domain methods often rely on phase-locked loop, quadrature signal generation and complex filtering techniques; the resulted multiple-looped system may suffer from slow transients and stability issues. This paper proposes a new detection method based on anti-conjugate harmonic decomposition and cascaded delayed signal cancellation. The method uses constant zero as the quadrature signal, and has a completely open-looped structure. The resulted detection system is very simple and robust. The fundamental and harmonic detection transients can be as short as 0.47 cycle, while zero steady-state error can be guaranteed in complicated harmonic scenarios, including all typical single-phase system harmonics. The performance of the proposed detection method is verified by experimental results. © 2012 IEEE.


Zhou H.,University of Alberta | Zhou H.,Rockwell Automation | Li Y.W.,University of Alberta | Zargari N.R.,University of Alberta | And 3 more authors.
IEEE Transactions on Power Electronics | Year: 2014

Compensating the grid background harmonics in a grid-interfacing converter system, such as a drive system's active-front-end rectifier or a grid-connected inverter in a distributed generation system, is an effective method of reducing line side current harmonics. However, this harmonic compensation is particularly challenging in medium-voltage high-power applications (>1 MVA). This is mainly due to the low-switching frequency operation of high-power converters (300-800 Hz) to maintain low power loss. Therefore, the traditional tasks of active power filters with relatively high-switching frequency cannot be easily realized here. This paper proposes a new pulse width modulation technique, named selective harmonic compensation (SHC), which actively compensates the power system background harmonics, but still operates at very low-switching frequencies. Details of the proposed SHC are presented. An SHC application example on a high-power current-source rectifier is provided in this paper. The simulations and experiments show that the proposed SHC scheme can effectively compensate the system background harmonics and improve the line current harmonic performance. © 1986-2012 IEEE.


Gu W.,ATCO Electric
Canadian Conference on Electrical and Computer Engineering | Year: 2015

This paper outlines procedures and experience the author had on commissioning and field tuning ABB Unitrol P AVR and PSS of a 160 MW steam turbine. Field measurements are provided in the paper for demonstration of transient responses. In addition, UEL verification test was conducted and test method is described in this paper. Transient responses from computer simulations are also provided in this paper to demonstrate the techniques used by today's power engineers. Comparisons between the field measurements and simulations show good matched. The tuned AVR and PSS parameters are provided for reference, and PSS frequency characteristics are presented. © 2015 IEEE.


Wang Y.F.,ATCO Electric | Li Y.W.,University of Alberta
IEEE Transactions on Power Electronics | Year: 2013

Single-phase grid-connected converters are widely used in many applications such as photovoltaics, fuel cells, active power filters, etc. An important topic for the development of their control schemes is ac signal detection, such as grid phase detection for grid-interfacing inverters, and harmonic detection for harmonic compensation devices. Since only one signal is available, the task is more difficult than in three-phase systems. Among the existing methods, the frequency-domain ones are known to have a one-cycle delay and heavier computational burden. Meanwhile, the time-domain methods often rely on phase-locked loop, quadrature signal generation, and complex filtering techniques; the resulted multiple-looped system may suffer from slow transients and stability issues. This paper proposes a new detection method based on anticonjugate harmonic decomposition and cascaded delayed signal cancellation. The method uses constant zero as the quadrature signal, and has a completely open-looped structure. The resulted detection system is very simple and robust. The fundamental and harmonic detection transients can be as short as 0.47 cycle in most cases, or 1.5 cycles for cases with considerable frequency variations. Meanwhile, zero steady-state error can be guaranteed in complicated harmonic scenarios, including all typical single-phase system harmonics. The performance of the proposed detection method is verified by experiments. © 1986-2012 IEEE.


News Article | October 28, 2016
Site: www.marketwired.com

ATCO Ltd. today announced third quarter adjusted earnings for 2016 of $64 million compared to $66 million in 2015. Earnings growth in the third quarter of 2016 was offset by the prior period impacts associated with the ATCO Electric Transmission 2015 to 2017 General Tariff Application (GTA) decision received in the quarter. Excluding the prior period impacts of the GTA decision, normalized adjusted earnings were $71 million. Higher normalized adjusted earnings were due to continued capital investment and growth in rate base within the Regulated Utilities, and business-wide cost reduction initiatives. ATCO invested $391 million in the third quarter and $1,142 million for the year to date, 86 per cent of which was in the Company's Regulated Utilities and in long-term contracted capital assets. These investments either earn a return under a regulatory business model or are commercially secured under long-term contracts. On October 13, 2016, ATCO declared a fourth quarter dividend for 2016 of 28.50 cents per Class I Non-Voting and Class II Voting Share, a 15 per cent increase over the quarterly dividends declared in the same period of 2015. ATCO's annual dividend per share has increased for 23 consecutive years. FINANCIAL SUMMARY AND RECONCILIATION OF ADJUSTED EARNINGS A financial summary and reconciliation of adjusted earnings to earnings attributable to Class I and Class II Shares is provided below: This news release should be used as a preparation for reading the full disclosure documents. ATCO's consolidated financial statements and management's discussion and analysis for the third quarter ended September 30, 2016 will be available on the ATCO website (www.ATCO.com), via SEDAR (www.sedar.com) or can be requested from the Company. With approximately 7,000 employees and assets of $20 billion, ATCO is a diversified global corporation delivering service excellence and innovative business solutions in Structures & Logistics (workforce housing, innovative modular facilities, construction, site support services, and logistics and operations management); Electricity (electricity generation, transmission, and distribution); Pipelines & Liquids (natural gas transmission, distribution and infrastructure development, energy storage, and industrial water solutions); and Retail Energy (electricity and natural gas retail sales). More information can be found at www.ATCO.com. Certain statements contained in this news release may constitute forward-looking information. Forward-looking information is often, but not always, identified by the use of words such as "anticipate", "plan", "estimate", "expect", "may", "will", "intend", "should", and similar expressions. Forward-looking information involves known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking information. The Company's actual results could differ materially from those anticipated in this forward-looking information as a result of regulatory decisions, competitive factors in the industries in which the Company operates, prevailing economic conditions, and other factors, many of which are beyond the control of the Company. The Company believes that the expectations reflected in the forward-looking information are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking information should not be unduly relied upon. Any forward-looking information contained in this news release represents the Company's expectations as of the date hereof, and is subject to change after such date. The Company disclaims any intention or obligation to update or revise any forward-looking information whether as a result of new information, future events or otherwise, except as required by applicable securities legislation.


News Article | October 28, 2016
Site: www.marketwired.com

Canadian Utilities Limited today announced third quarter adjusted earnings for 2016 of $96 million compared to $99 million in 2015. Earnings growth in the third quarter of 2016 was offset by the prior period impacts associated with the ATCO Electric Transmission 2015 to 2017 General Tariff Application (GTA) decision received in the quarter. Excluding the prior period impacts of the GTA decision, normalized adjusted earnings were $108 million. Higher normalized adjusted earnings were due to continued capital investment and growth in rate base within the Regulated Utilities, and business-wide cost reduction initiatives. Canadian Utilities invested $340 million in the third quarter and $1,014 million for the year to date, 92 per cent of which was in the Company's Regulated Utilities and in long-term contracted capital assets. These investments either earn a return under a regulatory business model or are commercially secured under long-term contracts. On October 13, 2016, Canadian Utilities declared a fourth quarter dividend for 2016 of cents 32.50 per Class A Non-Voting and Class B Common Share, a 10 per cent increase over the quarterly dividends declared in the same period of 2015. Canadian Utilities' annual dividend per share has increased for 44 consecutive years. FINANCIAL SUMMARY AND RECONCILIATION OF ADJUSTED EARNINGS A financial summary and reconciliation of adjusted earnings to earnings attributable to equity owners is provided below: This news release should be used as a preparation for reading the full disclosure documents. Canadian Utilities' consolidated financial statements and management's discussion and analysis for the third quarter ended September 30, 2016 will be available on the Canadian Utilities website (www.canadianutilities.com), via SEDAR (www.sedar.com) or can be requested from the Company. With approximately 5,500 employees and assets of $19 billion, Canadian Utilities Limited is an ATCO company. ATCO is a diversified global corporation delivering service excellence and innovative business solutions in Structures & Logistics (workforce housing, innovative modular facilities, construction, site support services, and logistics and operations management); Electricity (electricity generation, transmission, and distribution); Pipelines & Liquids (natural gas transmission, distribution and infrastructure development, energy storage, and industrial water solutions); and Retail Energy (electricity and natural gas retail sales). More information can be found at www.canadianutilities.com. Certain statements contained in this news release may constitute forward-looking information. Forward-looking information is often, but not always, identified by the use of words such as "anticipate", "plan", "estimate", "expect", "may", "will", "intend", "should", and similar expressions. Forward-looking information involves known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking information. The Company's actual results could differ materially from those anticipated in this forward-looking information as a result of regulatory decisions, competitive factors in the industries in which the Company operates, prevailing economic conditions, and other factors, many of which are beyond the control of the Company. The Company believes that the expectations reflected in the forward-looking information are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking information should not be unduly relied upon. Any forward-looking information contained in this news release represents the Company's expectations as of the date hereof, and is subject to change after such date. The Company disclaims any intention or obligation to update or revise any forward-looking information whether as a result of new information, future events or otherwise, except as required by applicable securities legislation.

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