2012 WAPA Annual Progress Report



Western Area Power AdministrationRocky Mountain Region2012 Annual Progress ReportProjects:Weld Substation 230-kV TransformerWeld Substation 230-kV SubstationName:Weld Substation 230-kV AdditionsParticipants:Western Area Power Administration - Rocky Mountain Region, Public Service Company Colorado Status:Scheduled completion 2nd Qtr 2012Description of Work:Addition of a third 230/115-kV 150 MVA transformerContact:Linda PopeElectrical Engineering Technician5555 E. Crossroads Blvd.Loveland, Co. 80538970-461-7348jpope@Western Area Power AdministrationDesert Southwest Region2012 Annual Progress ReportThe Desert Southwest Region had no projects that met WECC criteria, 200-kV and above.Western Area Power AdministrationUpper Great Plains Region2012 Annual Progress ReportProjects:Havre – Rainbow 161-kV Transmission LineRainbow Substation Transformer ReplacementHavre SubstationShelby 2 Substation Reactor ReplacementFort Peck Hydro Plant Reactor ReplacementNew Substation between Malta – Richardson Coulee Transmission LineListed below is Western’s 2012 WAUW Annual Progress Report. None of WAUW’s planned transmission system additions/upgrades have any regional impacts to the WECC Interconnected System and none are above the 200 kV or 200 MW reporting thresholds. However, they are significant to the local area and do include future provisions for energization at 230 kV.Updated Progress ReportHavre to Rainbow 161kV Transmission Rebuild / Upgrade Project(Started Fall 2007, On-Hold 2012-2017, Targeted Completion 2022)Western’s 103 mile Havre – Verona – Rainbow 161kV transmission line was constructed and energized in 1935. It electrically parallels NorthWestern Energy’s (NWE’s) Havre – Rainbow 161kV circuit. These two circuits maintain separate rights-of-ways with two crossings. Western intends to rebuild its circuit in segments, at 230kV specification. Each segment is anticipated to be complete and re-energized in approximately one month. The existing right-of-way is inadequate and will be expanded in most areas and re-routed in others. An Environmental Assessment (EA) is complete for this project and has been issued for final publication. The first 30 mile segment between Havre and Verona is complete, along with 1 mile at the Rainbow / Great Falls end for re-termination into NorthWestern Energy’s (NWE's) Great Falls Substation in conjunction with Project 2) described below. In 2011, 14 miles of reroute and reconstruction began in the Loma, MT area and was approximately one-third complete when crews were re-dispatched due to storm damage in Eastern Montana / Western North Dakota (East Grid WAUE BA). Due to both storm damage and dramatic oil exploration load growth in the Eastern Montana / Western North Dakota area, this project has been placed on-hold for approximately 5 years, with approximately 5 years of construction remaining prior completion. Therefore, target completion has been extended 5 year until 2022. Once the project resumes, construction will again continue during non-peak loading periods only. Upon completion of each segment, the line will continue to be energized at 161kV until such time that conversion to 230kV is required. Additional system impact study analyses will be required with stakeholder approval prior to the 230kV voltage conversion. No interruption of customer service during construction is anticipated with this project.Updated Progress ReportRainbow Substation Transformer Replacement & Relocation Project (Start Spring 2009, Expected Completion April 2012) Western currently owns, operates and maintains a 161/100kV, 45 MVA auto-transformer and breaker bay in NWE's Rainbow Substation. Western has replaced and relocated this transformer with a new three-phase unit away from the Missouri River, reducing the potential environmental hazard. The new 100 MVA unit has been relocated approximately two miles from the existing site in NWE’s 230kV breaker and one-half Great Falls Substation. The existing 161kV circuit will be re-terminated at this location. The Environmental Assessment (EA) for the Havre to Rainbow 161kV Rebuild / Upgrade (Project 1 above) included the relocation of Western’s Rainbow transformer bank. System studies were performed by both Western and NWE Agreements with NWE for placement of the transformer in the Great Falls Substation with the new (relocated) 161 kV interconnect are complete. The physical installation of the new 100 MVA transformer is complete. Completion of all controls, protective relaying and final commissioning is expected by April 1, 2012. No interruption of customer service is anticipated.Updated Progress ReportHavre Substation Upgrade Project (Start Fall 2010, Expected Completion Fall 2012) Western currently owns, operates and maintains the Havre 161/115/12.47kV Substation. Upgrades are a result of needed relaying replacements and a new 115 kV interconnect for network load. The existing 115 kV single breaker and bypass will be replaced with a ring bus configuration serving the existing Shelby circuit and new network service interconnect. In addition, a new dedicated circuit interrupter will be installed for protection of the transformer. Construction design is complete. The control building and protective relaying will be completed summer of 2012. Completion of the 115 kV yard work is expected by the end of 2012. No interruption of customer service during construction is anticipated.Updated Progress ReportShelby 2 Substation Reactor Replacement Project (Start Summer 2010, Expected Completion May 2012)Western currently owns, operates and maintains the Shelby 2 230/115/12.47kV Substation. The existing 6.5 MVA oil filled reactor has reached its reliable life cycle and is schedule to be replaced. System studies were conducted to size a new unit based on current system operating conditions and topology. A 12 MVA air core unit has been delivered and available for installation. This project was scheduled for 2010 but was postponed due to higher priority projects. The reactor has been physically installed and the project is awaiting final steel for an associated disconnect switch that was determined to be non-reliable. Completion is expected by May 1, 2012. No interruption of customer service during construction is anticipated.Final Progress ReportFort Peck Hydro Plant Reactor Replacement Project(Start Spring 2010, Completed Sept 2011)Western operates and the Corp of Engineers owns and maintains the Fort Peck 13.8/115/161kV Substation. The existing 15.4 MVA oil filled reactor had reached its reliable life cycle and was scheduled to be replaced. Installation of a 20 MVA unit is now complete and there were no interruptions of customer service during construction is anticipated.Updated Progress ReportNew 161/115kV Substation between Richardson Coulee and Malta Substations (Start Fall 2012, Expected Completion 2014)Western currently owns, operates and maintains the 180 mile Fort Peck-Richardson Coulee-Malta-Harlem-Havre 161kV circuit, which is constructed for future 230kV conversion. A new substation is anticipated to be installed approximately 18 miles East of Malta in the 49 mile section between the Richardson Coulee and Malta Substations. This new substation will provide a 161kV ring bus constructed at 230kV specification, 161/115kV transformation and a 115kV tap for a new 115kV line that will extend approximately 48 miles to serve an ultimate 22 MW of new oil development network load. VAR support will include approx 15 MVAR shunt capacitance at the new 161kV substation and a 15 MVAR shunt capacitance at the load. Due to oil development delays, construction is now anticipated to begin late 2012 or early 2013. No interruption of customer service during construction is anticipated.Western Area Power AdministrationSierra Nevada Region2012 Annual Progress ReportProject:O’Banion-Elverta / O’Banion-Natomas 230-kV Transmission LinesO’Banion-Elverta / O’Banion-Natomas 230 kV Transmission LinesName:O’Banion-Elverta / O’Banion-Natomas 230 kV Double Circuit Transmission LinesParticipants:Western Area Power Rocky Mountain Region, Sacramento Municipal Utility DistrictStatus:Double circuit line energized May 2011.Description of Work:Build the 37 miles of O’Banion-Elverta and the 33 miles of O’Banion-Natomas 230 kV double circuit transmission lines on a steel single pole with vertical double bundled 954 ACSR conductor and OPGW. Each circuit will be energized at 230-kVContact:Phil SanchezPower Operations114 Parkshore Dr.Folsom, CA 95630916-353-4478sanchez@ ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download