Transcript Slide 1
Central Maine Power Company Local System Plan Presentation Planning Advisory Committee Meeting November 17, 2011 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: Curtis Beveridge 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- Project is under consideration as a possible solution to a need, but little or no analysis is available Proposed- CMP has determined that the project is an appropriate solution to a need, but has not yet obtained internal budget approval Planned- Budgetary approval has been obtained Under Construction- Project is approved and is under design/construction In-Service- Project is complete 5 5 5 CMP’s Local System Planning Process • All CMP system upgrades are determined in accordance with Iberdrola USA Electric System Planning Manual. • Planning studies can result from: – Periodic Assessment of CMP’s 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 Project Origin Major Project Bowman St Substation Augusta Area Reliability Study Coopers Mills Substation Needs Assessment Projected In-Service Date Status Add 2nd 115/34.5 kV transformer Bowman St 115/34.5 kV transformer overloaded and low 34.5 kV bus voltage, post-contingency 2011 Under Construction Add 115/12.47 kV transformer at Coopers Mills (Maxcy's) Coordinate w/MPRP Voltage violations following loss of Maxcys 115/34.5 kV transformer 2014 Proposed Project Description 7 7 7 LSP Projects Project Origin Bath Area Load Study Major Project Line work Project Description Needs Assessment Rebuild 34.5 kV Sections 55 & 58 Overloaded under single element contingency conditions Projected In-Service Date 2011 Status Under Construction 8 8 8 LSP Projects Project Origin Berwick Lebanon Area Reliability Study Major Project Project Description Needs Assessment Bassett Substation New 34/12 kV Bassett Substation and 2nd 34.5 kV transmission line to Quaker Hill Experiencing high load growth, thermal restriction on Section 118 Berwick Substation New 34/12 kV Berwick Substation and 34.5 kV transmission line to Bassett Load growth, inadequate 34/12 kV capacity, overloaded distribution circuits New Lebanon Substation Add new Lebanon Substation and 34.5 kV transmission line to Butler’s Corner Load growth in Lebanon area will exceed area capacity Projected InService Date Status 2011 Under Construction 2013 Planned Planned 2013 9 9 9 LSP Projects Project Origin Project Description Needs Assessment Projected In-Service Date Status Install a 115 kV bus-tie breaker at Bath Substation Severe Low Voltage occurs with a Bath 115 kV bus-fault 2013 Proposed Line work Re-rate 34.5 kV Section 76 Overloaded under single element contingency conditions 2013 Proposed Brunswick Hydro Substation Upgrade Brunswick Hydro T1 34/12 kV transformer Overloaded under normal operating conditions 2013 Woolwich Substation Upgrade Woolwich T1 34/12 kV transformer Overloaded under normal operating conditions Topsham Substation Upgrade Topsham T2 34/12 kV transformer Overloaded under normal operating conditions Major Project Bath Substation Brunswick Topsham Area Study Proposed 2014 Proposed 2014 Proposed 10 10 10 LSP Projects Project Origin Brunswick Topsham Area Study (Cont) Major Project Project Description Topsham 115 kV Substation Upgrade Topsham 115 kV T1 and T3 115/34.5 kV transformers Needs Assessment Overloaded under single element contingency conditions Projected In-Service Date Status 2014 Proposed 11 11 11 LSP Projects Project Origin Major Project Project Description Needs Assessment New (9.5 mile) 34.5 kV line from Bridgton to Kimball Road Lakes Region Area Reliability Study Lovell Area Upgrades North Limington Upgrades Install a 5.4 MVAR capacitor bank at Kimball Road Projected In-Service Date 2015 Voltage violations under contingent system conditions Install a 5.4 MVAR capacitor bank at Lovell Status Concept 2015 Concept 2015 Concept Remove voltage supervision for the reverse power relaying on Lovell T1 Back feeding NH under postcontingent conditions creates voltage and thermal violations 2013 Two 34.5 kV breakers, two 5.4 MVAR capacitor banks Voltage violations under contingent system conditions 2015 Proposed Concept 12 12 12 LSP Projects Project Origin Lakes Region Area Reliability Study (Cont) Major Project Raymond Area Upgrades Projected InService Date Status Voltage and thermal violations under contingent system conditions 2015 Concept Relocate Raymond 34 kV S/S Room needed for expansion 2015 Concept New (4.5 mile) 34.5 kV line from Raymond 115 kV to Raymond 34 kV Voltage and thermal violations under contingent system conditions 2015 Concept New (6 mile) 34.5 kV line from North Raymond to Raymond 34 kV Voltage and thermal violations under contingent system conditions 2015 Project Description Needs Assessment New North Raymond 115/34 kV S/S with a four breaker ring bus and 115/34 kV transformer and (10 mile) 115 kV transmission line to Surowiec Concept 13 13 13 LSP Projects Project Origin Lewiston Auburn Area Reliability Study Major Project Project Description Needs Assessment Projected In-Service Date Leeds Substation Build a new Leeds 115/34.5 kV distribution substation Voltage violations and overloaded transformer at Turner Line work Change protection settings on Section 72 34.5 kV line overload postcontingency 2013 Great Falls Substation Replace Section 148 cable into Great Falls Substation 34.5 kV line overload postcontingency 2013 Gulf Island Substation Upgrade Gulf Island 115/34.5 kV T1 transformer Transformer overloaded with load growth, coordinate with MPRP reinforcements 2020 Status Under Construction 2012 Proposed Proposed Concept 14 14 14 LSP Projects Project Origin Major Project Needs Assessment Projected In-Service Date Add 5.4 MVAR 34.5 kV capacitor bank Low voltage 2011 Add 3.6 MVAR 34.5 kV capacitor bank Low voltage 2013 Meadow Rd Substation Add two 5.4 MVAR 34.5 kV capacitor banks Low voltage 2011 Line Work Add 1 mile 34.5 kV line to separate Section 51 (Warren – Waldoboro) Voltage and thermal violations under contingent system conditions (Not needed if NTA is approved) 2013 Park St Substation Midcoast Area NTA Analysis (the Camden Rockland Area Reliability Study) Project Description Status Under Construction Proposed Under Construction Proposed 15 15 15 LSP Projects Project Origin Major Project Boothbay Upgrades Midcoast Area NTA Analysis (Cont) Mason Upgrades Project Description Needs Assessment Projected In-Service Date Status Add a 2.7 MVAR capacitor bank at Boothbay Low voltage 2013 Proposed Power Factor Correction at Boothbay Harbor 12 kV Low voltage 2013 Proposed 34.5 kV line overload postcontingency 2013 Proposed 2013 Proposed 2013 Planned Relay Modifications on Section 25 at Mason Line Work Rebuild 34.5 kV Section 23 Voltage violations under contingent system conditions (Not needed if NTA is approved) Coopers Mills Upgrades Upgrade Coopers Mills T1 115/34 kV Transformer overloaded postcontingency 16 16 16 LSP Projects Project Origin Projected In-Service Date Status 2015 Proposed Rebuild 34.5 kV Section 181 Overloaded under single element contingency conditions (Not needed if NTA is approved) 2015 Proposed Rebuild a portion of 34.5 kV Section 180 Overloaded under single element contingency conditions 2015 Proposed Major Project Project Description Raven Farm Expansion (115/34.5 kV) New 115 kV bus with four breaker, breaker-and-a-half configuration. Also, install a 115/34 kV transformer and 34.5 kV line to Elm Street Portland Area NTA Analysis Line work Needs Assessment Voltage and thermal violations under contingent system conditions (Not needed if NTA is approved) 17 17 17 LSP Projects Project Origin Portland Area NTA Analysis (Cont) Major Project Red Brook Project Description Upgrade Red Brook T1 to a 30/50 MVA Needs Assessment Transformer overloaded under contingent system conditions (Not needed if NTA is approved) Projected In-Service Date Status 2015 Proposed 18 18 18 LSP Projects Project Origin Portland North Area Reliability Study Major Project Project Description Needs Assessment Projected In-Service Date Status Under Construction Line work Re-rate portions of 34kV line Section 102 Thermal violations under normal operating and contingent system conditions 2011 Bishop Street Substation Add 2-34 kV breakers on Section 188 Violation of 25 MW loss of load criterion 2011 Rebuild portions of 34.5 kV line Section 188 Thermal violations under normal operating and contingent system conditions 2012 Under Construction 2013 Proposed – Pending NTA conclusion Line work Line work Re-rate/rebuild portions of 34kV line Section 180A Thermal violations under normal operating and contingent system conditions (Not needed if NTA is approved) Under Construction 19 19 19 LSP Projects Project Origin Portland North Area Reliability Study (Cont) Major Project Project Description Needs Assessment Projected In-Service Date Status Voltage support Add two 2.7 MVAR capacitor banks at Freeport Voltage violations under contingent system conditions 2013 Proposed Voltage support Add two 5.4 MVAR capacitor banks at North Windham S/S Voltage violations under contingent system conditions 2013 Proposed Bishop Street Substation Add a 5.4 MVAR capacitor bank Voltage violations under contingent system conditions 2013 Bring S164 in/out of Elm St, re-rate S164A Thermal violations under contingent system conditions (Not needed if Raven Farms 115 kV is built) 2013 Elm Street Substation Proposed Proposed –Pending NTA conclusion 20 20 20 LSP Projects Project Origin Major Project Line work Portland North Area Reliability Study (Cont) Falmouth Substation Project Description Needs Assessment Projected In-Service Date Status Rebuild Section 103 Could overload under normal operating and/or single element contingency conditions in 2010 2013 Planned 2013 Proposed –Pending NTA conclusion Add two 34.5 kV breakers Voltage and 25 MW loss of load criteria violations under contingent system (Not needed if hybrid NTA is approved) Swett Rd. Substation Add two 34 kV breakers Low Voltages in the local area under single element contingencies East Deering Substation 115-34 kV substation with 115 kV line from Raven Farm. Additional source needed in the area (Not needed if NTA is approved) 2014 2015 Proposed – Pending Lakes Region Area Reliability Study results Proposed –Pending NTA Analysis 21 21 21 LSP Projects Project Origin Major Project North Yarmouth Substation Portland North Area Reliability Study (Cont) Swett Road Substation Prides Corner Substation Project Description Needs Assessment New 115/34kV S/S tapped from Sect 166, and 14.8 mi 34.5 kV line to Gray & Freeport with breakers Voltage violations under contingent system conditions Add 5.4 MVAR capacitor bank Add an additional 5.4 MVAR capacitor bank Projected In-Service Date 2015 Proposed –Pending NTA Conclusion 2016 Proposed – Pending Lakes Region Area Reliability Study results 2018 Proposed –Pending NTA Conclusion (Not needed if hybrid NTA is approved) Voltage violations under contingent system conditions Voltage violations under contingent system conditions Status (Not needed if hybrid NTA is approved) 22 22 22 LSP Projects Project Origin Saco Bay Area Reliability Study Major Project Project Description New Vallee Lane Substation New 115/34.5 kV Substation in Old Orchard Beach and 115 kV double-circuit line from Louden to Old Orchard Beach New Goosefare Substation Needs Assessment Additional 115 kV transformer capacity and voltage support is needed in the Saco Bay Area. Loss of Section 193 violates CMP’s 25 MW loss of load criterion. Projected In-Service Date 2012 Status Under Construction New 115/12 kV substation in Saco 23 23 23 LSP Projects Project Origin Skowhegan Area Reliability Study Major Project Project Description Needs Assessment Projected In-Service Date Status Line work Re-rate Section 73 Overloaded under single element contingency conditions 2011 Norridgewock Source Tap Section 73, install 34/34 deltawye isolating transformer for new distribution supply Distribution circuit becoming overloaded, need a new source 2012 Under Construction Lakewood Substation Expansion Loop Section 241 into a new 115 kV ring bus with 2nd 115/34.5 kV transformer Voltage violations under contingent system conditions 2013 Under Construction Under Construction 24 24 24 LSP Projects Project Origin Major Project Needs Assessment Projected In-Service Date Status Re-rate portions of 34.5 kV line Section 38. Overloaded under single element contingency conditions 2012 Planned Belgrade Source / Hospital Feed Install a 115/34 kV transformer and two 115 kV breakers at North Augusta with a new 34.5 kV distribution circuit into the Belgrade area. Reliability and voltage concerns on a very long 34.5 kV distribution circuit out of Rice Rips; need to bring in a new source to shift load. The addition of a new hospital is also driving these upgrades. 2012 Planned Line work Re-conductor a portion of 34.5 kV line Section 56. Overloaded under single element contingency conditions Line work Waterville Winslow Area Reliability Study Project Description 2013 Proposed 25 25 25 LSP Projects Project Origin Major Project Line work Waterville Winslow Area Reliability Study (Cont) Line Work Rice Rips Substation Project Description Re-rate portions of 34.5 kV line Section 13. Re-rate 34.5 KV overhead portion of Section 38B Bring the new line Section 241 in/out of Rice Rips by constructing 7 miles of new 115 kV Transmission. Also, upgrade Rice Rips into a 4breaker ring bus with a second 115/34 kV transformer. Needs Assessment Overloaded under single element contingency conditions Overloaded under single element contingency conditions Voltage and thermal violations under contingent system conditions Projected In-Service Date 2013 2013 2014 Status Proposed Proposed Proposed 26 26 26 LSP Projects Project Origin Maintenance Reliability Inspection Major Project Project Description Bristol Substation Upgrade Bristol T1 Bar Mills Substation Upgrade Bar Mills T4 South China Substation Upgrade South China T1 Needs Assessment Projected In-Service Date Status Overloaded under normal operating conditions 2012 2013 Planned 2012 Under Construction Line work Rebuild Sections; 5A, 48, 172, 187 These 34.5 kV line sections are in very poor condition and need to be rebuilt to improve reliability. Vassalboro Substation Move Section 40 termination to Vassalboro. Move two 34.5 kV breakers to Vassalboro. CMP Facilities at the Fort Halifax Substation are being retired and moved to the Vassalboro Substation Planned 27 27 27 LSP Generation Projects Generator ID Project Description Status Projected InService Date Current Progress Interconnection Request for 50 MW Wind Farm to tap into CMP 115 kV Section 270 north of Rumford 115 kV Substation Planned 2013 System Impact Study Complete & interconnection agreement executed ISO-NE Queue # 244 Interconnection Request for 117 MW Wind Farm to tie into CMP Wyman Hydro Substation Proposed 2013 System Impact Study Complete ISO-NE Queue # 287 Interconnection Request for 33 MW Wind Farm to tie into CMP 115 kV Line Section 229 between Rumford Substation and Riley Substation Planned 2013 Undergoing System Impact Study ISO-NE Queue # 215 28 28 28 LSP Generation Projects Generator ID Project Description ISO-NE Queue # 300 Interconnection Request for 20 MW Wind Farm to tie into CMP 115 kV Line Section 229 between Rumford Substation and Riley Substation ISO-NE Queue #310 Tied to Queue #138 ISO-NE Queue #333 Status Planned Projected InService Date Current Progress 2013 System Impact Study Complete Undergoing System Impact Study Interconnection Request for 45 MW Wind Farm to tie into Customer owned 115 kV line Section 267 north of Bigelow Substation. Concept 2012 Interconnection Request for 216 MW Wind Farm to tie into CMP. Three potential interconnection sites to be studied. Concept 2012 Undergoing Feasibility Study 29 29 29 LSP Generation Projects Generator ID Project Description ISO-NE Queue #335 Interconnection Request for 25 MW biomass generator at existing customer site. ISO-NE Queue #337 ISO-NE Queue #350 Projected InService Date Current Progress Planned 2012 System Impact Study Complete Interconnection Request to true-up the existing generating plant net output and add a net increase of 26 MW at existing customer site, Section 227. Planned 2012 System Impact Study Complete Interconnection Request to interconnect into 3-Points of interconnection Concept 2013 Status Undergoing Feasibility Study ISO-NE Queue #366 Interconnection Request for 13.4 MW increased capacity at existing customer site. Concept 2012 Undergoing System Impact Study Study ISO-NE Queue #372 Interconnection Request for 3 MW increased capacity at existing customer site. Concept 2012 phase A 2013 phase B Undergoing System Impact Study 30 30 30 In-Service LSP Projects Project Origin Augusta Area Reliability Study Major Project Line work Project Description Re-rate 34 kV line Sections 39 & 41 to 212°F thermal limit Needs Assessment Overloaded under normal operating conditions Projected InService Date 2011 Status In Service 31 31 31 In-Service LSP Generation Projects Generator ID Project Description ISO-NE Queue # 138 •Rebuild Bigelow Substation •Wyman Hydro Substation Upgrades •Re-rate Sect 215 •Several area capacitor banks ISO-NE Queue # 290 System Impact Study Complete ISO-NE Queue # 197 •New 115 kV line Section 270 (old Section 59) •New Roxbury Substation •Move 115/34 kV transformer from Rumford to Roxbury Status In Service In Service Back-feed 10/15/11 In Service Projected InService Date Current Progress 2009 Met Developer’s Interconnection Request & Implemented the Recommendations contained in the I.3.9 Proposed Plan Application 2011 Met Developer’s Interconnection Request for 20 MW Wind Farm to tie into CMP Woodstock Substation 2011 Met Developer’s Interconnection Request to connect 50.6 MW Wind Farm to new CMP 115 kV Section 270 32 32 32 LSP Future Studies Study Portland North Area Reliability Study Mid-coast Area Reliability Study Lakes Region Area Reliability Study Southern Maine Area Reliability Study Augusta Area Reliability Study Projected Study Date Dec 2010 Dec 2010 2011 2012 2013 Status Needs Assessment Solutions In Review Re-affirm timing and need of projects from the original study. Re-assessing transmission and NTA requirements In Review Re-affirm timing and need of projects from the original study. Re-assessing transmission and NTA requirements In Progress Contingency processor showed thermal and voltage violations under single element contingencies Conduct area reliability study and assess possible system upgrades Concept Contingency processor showed thermal and voltage violations under single element contingencies Conduct area reliability study and assess possible system upgrades Concept Contingency processor showed thermal and voltage violations under single element contingencies Conduct area reliability study and assess possible system upgrades 33 33 33 2011 LSP Presentation QUESTIONS? 34 34 34