Transcript Slide 1
Central Maine Power Local System Plan Presentation Planning Advisory Committee Meeting December 16, 2009 1 1 1 Purpose of Local System Plan Per Attachment K – Local, this LSP presentation: • Describes projected improvements to non-PTF that are needed to maintain reliable customer service. • Reflects: – LSP Needs Assessments – Corresponding transmission system planning studies 2 2 2 LSP Communication • LSP is communicated to the PAC at an ISO-NE PAC RSP meeting once a year. – Separate meetings can be arranged if needed • 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]) 3 3 3 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 4 4 4 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 5 5 5 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. 6 6 6 LSP Projects Need Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Projected In-Service Date 2011 2012 2012 2012 Major Project Portland North Area Reliability Study Project Status Line work Bishop Street Substation Falmouth Substation Solutions Proposed Several transmission elements would experience overloading under normal operating and/or single element contingency conditions in 2011 Re-rate portions of four 34kV lines: S180A, S102, S180, S188 Proposed Low voltages on Section 188 under single element contingencies, violation of 25 MW loss of load criteria Add 2-34 kV breakers, add 5.4 MVAR capacitor bank Low Voltages on Section 180 under single element contingencies, violation of 25 MW loss of load criteria Add 2-34 kV breakers Low Voltages in the local area under single element contingencies Add 5.4 MVAR capacitor bank at Freeport, E. Deering, (2) N. Gorham S/S Proposed Voltage support Needs Assessment Proposed 7 7 7 LSP Projects Need Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Projected In-Service Date 2012 Major Project Portland North Area Reliability Study (Cont) Project Line work 2013 Elm Street Substation 2014 Swett Rd. Substation 2015 East Deering Substation Status Needs Assessment Solutions Proposed Several transmission elements would experience overloading under normal operating and/or single element contingency conditions in 2012 Rebuild portions of two 34kV lines: S180, S188 Proposed Transmission elements experienced overloading (Not needed if Raven Farm is built for MPRP) Bring S164 in/out of Elm St, re-rate S164A Proposed Low Voltages in the local area under single element contingencies Add 2-34 kV breakers, rebuild S103 Proposed Additional source needed in the area (Coordinate with MPRP) 115-34kV S/S, 115kV line from Elm St. 8 8 8 LSP Projects Need Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Projected In-Service Date 2015 Major Project Portland North Area Reliability Study (Cont) Status North Yarmouth Substation Skowhegan Area Reliability Study Line work Proposed Proposed Solutions Reliability Concerns under single element contingencies 115-34kV S/S, 115kV line to Gray and Freeport, 2-34 kV breakers at Gray and Freeport Voltage support is needed Add 5.4 MVAR capacitor bank Additional voltage support is needed Add an additional 5.4 MVAR capacitor bank Transmission element experienced overloading under single element contingency conditions Re-rate S73 Proposed Prides Corner Substation 2018 Needs Assessment Proposed Swett Road Substation 2017 2011 Project 9 9 9 LSP Projects Need Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Load Growth/ Sub-Area Study Projected In-Service Date 2012 Major Project Skowhegan Area Reliability Study (Cont) Project Status Needs Assessment Solutions Voltage Support on S83 Proposed Low Voltages in the local area under single element contingencies 20 MVAR Cap Bank Additional source needed in the area, distribution circuits being overloaded 34/12kV S/S, 34kV line from Weston S/S, 34kV breaker at Weston Reliability Concerns under single element contingencies 2nd 115/34kV xfmr, tap S241 with new 115kV line Transmission elements experienced overloading under single element contingency conditions Rebuild S55 & S58 Norridgewock Substation 2012 Lakewood Substation 2013 Proposed Proposed Bath Area Load Growth 2011 Line work Proposed 10 10 10 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 In-Service Several transmission elements would experience overloading under normal operating conditions in 2010 Add 2nd transformer, re-rate five 34kV lines, add 115 breakers, add 5.4 MVAR capacitor bank May 2009 Edgecomb Substation In-Service Widespread low voltage Add 34 kV breakers, add 5.4 MVAR capacitor bank Load Growth/ Sub-Area Study February 2009 Boothbay Substation In-Service Low Voltage Add 2.7 MVAR capacitor bank Load Growth/ Sub-Area Study December 2008 Damariscotta Substation In-Service Low Voltage Add 3.6 MVAR capacitor bank 11 11 11 LSP Projects Need Projected In-Service Date Load Growth/ Sub-Area Study 2011 Load Growth/ Sub-Area Study Major Project Augusta Area Reliability Study Project Status Needs Assessment Solutions Line Reratings Proposed Several transmission elements overloaded under normal operating conditions Re-rate 34 kV line Sections 39 & 41 to 212°F thermal limit 2011 Bowman St Substation Proposed Bowman St 115/34 kV transformer overloaded and low 34 kV bus voltage post-contingency Add 2nd 115 34 kV transformer Load Growth/ Sub-Area Study 2013 Maxcys Substation Proposed Low voltages following loss of Maxcys 115/34 kV transformer Add second 14 MVA 115/34 kV transformer at Maxcys. Coordinate w/MPRP Load Growth/ Sub-Area Study December 2008 Augusta East Side Substation In-Service 115 kV Line Section 88 fault results in loss of 115/34 kV supply at Augusta East Side and low 34 kV bus voltages Replace Augusta East Side 115 kV motor operated air break switch with a circuit breaker 12 12 12 LSP Projects Need Projected InService Date Major Project Load Growth/ Sub-Area Study 2010 Load Growth/ Sub-Area Study 2011 Berwick Lebanon Area Reliability Study Load Growth/ Sub-Area Study 2013 Load Growth/ Sub-Area Study 2013 Project High St Substation Bassett Substation Berwick Substation Status Needs Assessment Solutions Planned Thermal restrictions on transmission elements Re-rate S114, S112A, S114A & S185 Planned Experiencing high load growth, thermal restriction on Section 118 New Bassett S/S Proposed Experiencing high load growth, thermal restriction on Section 118 Add 2nd 34 kV line from Quaker Hill to Bassett Proposed Load growth, inadequate 34/12 kV capacity, overloaded distribution circuits Add 34 kV transmission line Bassett to Berwick, new Berwick S/S 13 13 13 LSP Projects Need Projected In-Service Date Major Project Project Status Needs Assessment Solutions Load Growth/ Sub-Area Study 2014 Berwick Lebanon Area Reliability Study (Cont.) New Lebanon Substation Proposed Load growth in Lebanon area will exceed area capacity Add new Lebanon S/S, add 34 kV transmission line from Butler’s Corner Load Growth/ Sub-Area Study 2011 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 Increased reliability to meet planning loss of load criteria by splitting Section 51 (Warren – Waldoboro). Add 1 mile 34.5 kV line to separate Warren – Waldoboro line 14 14 14 LSP Projects Need Projected In-Service Date Major Project Project Status Needs Assessment Solutions Load Growth/ Sub-Area Study 2013 CamdenRockland Area Reliability Study (Cont.) 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 Load Growth/ Sub-Area Study 2009 Line Re-ratings In-Service 34 kV line sections are overloaded for normal operating conditions Re-rate five 34 kV lines: Sections 41, 45, 46, 50, & 72 Load Growth/ Sub-Area Study 2010 LewistonAuburn Area Reliability Study Hotel Road Substation UnderConstruction Post-contingency 34 kV low voltage problems & overloading of Hotel Rd 115/34 kV transformer Install 2nd 115/34 kV transformer at Hotel Road Load Growth/ Sub-Area Study 2010 Leeds Substation Planned Low voltage and transformer loading at Turner •Build a new Leeds 115/34 kV distribution substation 15 15 15 LSP Projects Need Projected In-Service Date Major Project Project Status Needs Assessment Solutions Load Growth/ Sub-Area Study 2012 LewistonAuburn Area Reliability Study (Cont.) 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 with MPRP) Load Growth/ Sub-Area Study 2012 Saco Bay Area Reliability Study New Vallee Lane & 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 2010 Louden Substation Planned 34 kV line overload Rebuild 34.5kV Section 174 16 16 16 LSP Projects Need Projected In-Service Date Major Project Load Growth/ Sub-Area Study 2012 Mid-Coast Reliability Study Project Belfast: Breakers Status Proposed Needs Assessment Loss of Section 86 exceeds CMP’s loss of load criterion and results in low voltages Solutions •Add 115 kV breakers at Belfast •Build ~ 1 mile 115 kV tap line •Add 10.8 MVAR 34.5 kV capacitor bank •Coordinate with MPRP 17 17 17 LSP Generation Projects Need Projected In-Service Date Major Project Project Status Needs Assessment Solutions Generator Interconnect 2009 ISO-NE Queue # 138 In Service Met Developer’s Interconnection Request & Implemented the Recommendations contained in the I.3.9 Proposed Plan Application •Rebuild Bigelow Substation •Wyman Hydro Substation Upgrades •Re-rate Sect 215 •Several area capacitor banks Generator Interconnect 2011 ISO-NE Queue # 197 Planned (CPCN in Progress) Request to connect 50.6 MW Wind Farm to new CMP 115 kV Line Section 270 •New 115 kV Line Section 270 north of Rumford 115 kV Substation •New Roxbury Substation •Move 115/34 kV transformer from Rumford to Roxbury 18 18 18 LSP Generation Projects Need Projected In-Service Date Generator Interconnect 2012 Generator Interconnect Generator Interconnect Major Project Project Status Needs Assessment Solutions ISO-NE Queue # 272 Concept Interconnection Request for 85 MW Wind Farm to tap into CMP 115 kV Line Section 222 north of Wyman Hydro Substation Undergoing Feasibility Study 2011 ISO-NE Queue # 215 Concept Interconnection Request for 50 MW Wind Farm to tap into new CMP 115 kV Line Section 270 north of Rumford 115 kV Substation Undergoing System Impact Study 2010 ISO-NE Queue # 244 Concept Interconnection Request for 128.6 MW Wind Farm to tie into CMP Wyman Hydro Substation Undergoing System Impact Study 19 19 19 LSP Generation Projects Need Projected In-Service Date Generator Interconnect 2010 Generator Interconnect Generator Interconnect Major Project Project Status Needs Assessment Solutions ISO-NE Queue # 287 Concept Interconnection Request for 34.5 MW Wind Farm to tie into CMP Rumford IP Substation Undergoing Feasibility Study 2012 ISO-NE Queue # 290 Concept Interconnection Request for 18 MW Wind Farm to tie into CMP Woodstock Substation Undergoing Feasibility Study 2011 ISO-NE Queue # 300 Concept Interconnection Request for 52.5 MW Wind Farm to tap into CMP 115 kV Line Section 229 between Rumford Substation and Riley Substation Undergoing Feasibility Study 20 20 20 LSP Future Studies Major Project Projected Study Date Waterville/ Winslow Area Reliability Study 2010 Southern Maine Area Reliability Study Lakes Region Area Reliability Study Status Needs Assessment Solutions Concept Contingency processor showed thermal and voltage violations under single element contingencies Conduct area reliability study and assess possible system upgrades 2010 Concept Contingency processor showed thermal and voltage violations under single element contingencies Conduct area reliability study and assess possible system upgrades 2010 Concept Contingency processor showed thermal and voltage violations under single element contingencies Conduct area reliability study and assess possible system upgrades 21 21 21