Transcript Slide 1
Central Maine Power Local System Plan Presentation Planning Advisory Committee Meeting November 19, 2008 1 1 1 Local System Plan (LSP) Communication Per Attachment K – Local, this LSP presentation: • Describes projected improvements to non-PTF that are needed to maintain reliable customer service. • LSP is presented at a Planning Advisory Committee meeting once a year • PAC, Transmission Customers, and other Stakeholders have 30 days to provide written comments for consideration to CMP – CMP’s contact: David M. Conroy Manager System Planning Central Maine Power Company 83 Edison Drive Augusta, Maine 04336 (email: [email protected]) 2 2 2 LSP Communication cont. • Each PTO is individually responsible for publicly posting and updating the status of its respective LSP and the transmission projects list on a website in a format similar to the RSP project list • The ISO-NE RSP project list contains links to each individual PTO’s transmission project list • CMP’s LSP project list is located at: http://www.cmpco.com/SuppliersAndPartners/Transmission Services/CMPTransmissionSvc/lsp.html 3 3 3 CMP LSP Project List • Central Maine Power will update the LSP project list at least annually. • A presentation of the LSP will be made annually. • LSP Project List is a cumulative listing of proposed transmission solutions intended to meet identified needs. • Similar to PTF projects in the RSP, the LSP project list contains a status of each non-PTF project: • • • • • Concept Proposed Planned Under Construction In-Service 4 4 4 CMP’s Local System Planning Process • All CMP system upgrades are determined in accordance with Central Maine Power Company Transmission Planning Criteria. • Planning studies can result from: – Periodic Assessment of CMPs 14 Local Planning Areas – Load Growth – Retail or Wholesale Customer Request – Generator Interconnection Request – System-Wide Contingency Analysis • Studies may utilize both ISO-NE Library Base Cases and/or Local CMP Base Cases. • Generator Interconnections on the non-PTF Transmission System are guided by the CMP Transmission & Distribution Interconnection Requirements for Generation. 5 5 5 LSP Projects Need Projected In-Service Date Major Project Load Growth/ Sub-Area Study June 2009 Boothbay Area Reliability Study Load Growth/ Sub-Area Study Project Status Needs Assessment Solutions Newcastle Substation Under Construction Several transmission elements could overload under normal operating conditions in 2010 Add 2nd transformer, re-rate five 34.5 kV lines, add 115 kV breakers, add 5.4 MVAR capacitor bank May 2009 Edgecomb Substation Under Construction Potential widespread low voltage, post-contingency Add 34.5 kV breakers, add 5.4 MVAR capacitor bank Load Growth/ Sub-Area Study February 2009 Boothbay Substation Under Construction Potential Low Voltage, post-contingency Add 5.4 MVAR capacitor bank Load Growth/ Sub-Area Study December 2008 Damariscotta Substation Under Construction Potential Low Voltage, post-contingency Add 3.6 MVAR capacitor bank 6 6 6 LSP Projects Need Projected In-Service Date Load Growth/ Sub-Area Study 2010 Load Growth/ Sub-Area Study Major Project Augusta Area Reliability Study Project Status Needs Assessment Solutions Line Reratings Proposed Several transmission elements could overload under normal operating conditions Re-rate 34 kV line Sections 39 & 41 2011 Bowman St Substation Proposed Potential Bowman St 115/34.5 kV transformer overloaded and low voltage post-contingency Add 2nd 115 115/34.5 kV transformer Load Growth/ Sub-Area Study 2011 Maxcys Substation Proposed Low voltages following loss of Maxcys 115/34.5 kV transformer Add second transformer at Maxcys Load Growth/ Sub-Area Study December 2008 Coordinate w/MPRP Augusta East Side Substation Under Construction 115 kV Line Section 88 fault results in loss of 115/34.5 kV supply at Augusta East Side and low voltages Replace Augusta East Side 115 kV switch with a circuit breaker 7 7 7 LSP Projects Need Projected InService Date Major Project Project Status Needs Assessment Solutions Load Growth/ Sub-Area Study 2011 Berwick Lebanon Area Reliability Study Bassett Substation Proposed Experiencing high load growth, thermal restriction on Section 118 Add 2nd 34.5 kV line from Quaker Hill to Bassett, new Bassett S/S Load Growth/ Sub-Area Study 2013 Berwick Substation Proposed Load growth, inadequate transformer capacity Add 34.5 kV transmission line Bassett to Berwick, new Berwick S/S Load Growth/ Sub-Area Study 2012 New Lebanon Substation Proposed Load growth in Lebanon area will exceed area capacity Add new Lebanon S/S, add 34.5 kV transmission line from Butler’s Corner Load Growth/ Sub-Area Study 2010 High St Substation Proposed Thermal restrictions on transmission elements Re-rate S114, S112A, S114A & S185 8 8 8 LSP Projects Need Projected In-Service Date Major Project Project Status Needs Assessment Solutions Load Growth/ Sub-Area Study 2010 Camden Substation Proposed Low voltage Add 5.4 MVAR capacitor bank Load Growth/ Sub-Area Study 2011 CamdenRockland Area Reliability Study Park St Substation Proposed Low voltage Add 5.4 MVAR capacitor bank Load Growth/ Sub-Area Study 2011 Meadow Rd Substation Proposed Low voltage Add 10.8 MVAR capacitor bank Load Growth/ Sub-Area Study 2012 Highland Substation Proposed Need for postcontingent support in the area provided by a new 34 kV line. •New 34 kV transmission line to Meadow Rd •Add 1 mile 34.5 kV line to separate Warren – Waldoboro line 9 9 9 LSP Projects Need Projected In-Service Date Major Project Load Growth/ Sub-Area Study 2008 & 2009 Load Growth/ Sub-Area Study 2009 LewistonAuburn Area Reliability Study Load Growth/ Sub-Area Study 2012 Project Status Needs Assessment Solutions Line Re-ratings Under Construction Potential 34.5 kV line overloads for normal operating conditions Re-rate five 34 kV lines: Sections 41, 45, 46, 50, & 72 Hotel Road Substation Proposed Potential postcontingency low voltages & overload of Hotel Rd 115/34.5 kV transformer Install 2nd 115/34 kV transformer & 115 kV breaker at Hotel Road Gulf Island Lewiston Lower Substations Planned Overloading of Lewiston - Auburn Downtown Transmission Corridor Reinforce Gulf Island – Lewiston Lower transmission system via new 115 kV transmission line. Coordinate w/MPRP Load Growth/ Sub-Area Study 2009 Leeds Substation Planned Low voltage and transformer loading at Turner Leeds 115/34.5 kV substation 10 10 10 LSP Projects Need Projected In-Service Date Major Project Project Status Needs Assessment Solutions Load Growth/ Sub-Area Study 2011 & 2012 Saco Bay Area Reliability Study New Ross Road & Goosefare Substations Planned Additional 115 kV transformer capacity and voltage support is needed in the Saco Bay Area. Loss of Section 193 violates CMP’s loss of load criterion. New 115 kV doublecircuit line from Louden to Old Orchard Beach New 115/34.5 kV Substation in Old Orchard Beach Load Growth/ Sub-Area Study June 2010 Section 174 Planned 34.5 kV line overload & condition Rebuild Section 174 Load Growth/ Sub-Area Study 2013 2nd Portland Loop Concept Support load growth in the Portland-North Area Study started. Potential for a 115 kV transmission line from Yarmouth to East Deering with 115/34.5 kV S/S Portland North Area Reliability Study Coordinate w/MPRP 11 11 11 LSP Projects Need Projected In-Service Date Load Growth/ Sub-Area Study 2012 Major Project Project Mid-Coast Reliability Study Belfast Breakers Status Proposed Needs Assessment Solutions Loss of Section 86 exceeds CMP’s loss of load criterion and results in low voltages •Add 115 kV breakers at Belfast •Build ~ 1 mile 115 kV tap line •Add 10.8 MVAR 34.5 kV capacitor bank •Coordinate w/MPRP Generator Interconnect 2009 ISO-NE Queue # 138 Under Construction Meet Interconnection Request & Implement PPA requirements •Rebuild Bigelow Substation •Wyman Hydro Sect 215 termination •Re-rate Sect 215 •Several area capacitor banks Generator Interconnect 2009 ISO-NE Queue # 197 RH Concept Request to connect 55 MW to CMP 34.5 kV Section 54 north of Rumford 115 kV Substation Undergoing System Impact Study 12 12 12 LSP Projects Need Projected In-Service Date Generator Interconnect 2012 Generator Interconnect Major Project Project Status Needs Assessment Solutions ISO-NE Queue # 272 Concept Interconnection Request for 100 MW to CMP 115 kV Section 222 north of Wyman Hydro Substation Undergoing Feasibility Study 2012 ISO-NE Queue # 272 Concept Interconnection Request for 68 MW to CMP 34.5 kV Section 54 north of Rumford 115 kV Substation Undergoing Feasibility Study Generator Interconnect 2009 ISO-NE Queue # 215 LF Concept Interconnection Request for 75 MW to CMP 34.5 kV Section 59 north of Rumford 115 kV Substation Undergoing System Impact Study Generator Interconnect 2010 ISO-NE Queue # 244 HP Concept Interconnection Request for 156 MW to CMP 115 kV Section 215 Undergoing Feasibility Study 13 13 13