Slide 1: Hydro One's LAC & Threshold CIAs for LDCs
Hydro One’s LAC & Threshold CIAs for LDCs June 30, 2010 1
Slide 2: Agenda for Today
Agenda for Today 1. Overview of Hydro One’s List of Allocated Capacity (LSC) 2. Threshold CIA Option for LDC’s 3. Review of a CIA Template 4. Q & A Session 2
Slide 3: Today's Objectives
Today’s Objectives • Today we want to review the List of Station Capacity to ensure you understand the context and information provided. • We also want to provide a specific update on the Threshold CIA Process for LDC’s. • We will review our CIA template to help you understand the output of a CIA st
Slide 4: Hydro One LSC
Hydro One LSC • On May 1, 2010, HONI published a new format to better comply with regulatory requirements, and to provide more information to proponents. • LAC is now composed of the List of Station Capacity and the List of Applications. • No fundamental changes to station capacities as a result. 4
Slide 5: Hydro One LSC
Hydro One LSC • On June 1, 2010, legacy distribution generators (NUGs) were added to the List of Applications – Load displacement generators are not shown since their impact is included in metered load. Their SC impact has been included in the remaining SC capacity values. • Proponents can now see e
Slide 6: Hydro One LSC
Hydro One LSC • List of Station Capacity shows thermal capacity and Short Circuit capacity available, in separate columns. • Minimum station loading is shown for information, but is also reflected in the thermal capacity number. • Therefore the minimum station loading value is not required to determ
Slide 7: Hydro One LSC
Hydro One LSC • The remaining SC capacity must accommodate both existing and queued generators. • Without detailed knowledge of the existing or queued generators, we suggest: – Subtract the capacity listed on the List of Applications (x5 assuming a classical synchronous machine) from the associated
Slide 8: List of Station Capacity sample
AGIMAK DS Tota Ft. F2 ET) 10 72 SS AGINCOURT TS. ie O.MeN2 EZ 144 0s 124 AGINCOURT TS a a 003,057 EZ 132 108 2s AGINCOURT TS ron 110, 12,M 3M: mH 27s a4 ‘Sum of Buses ° ALBION TS [Tots INA. 125 358 ‘Sum of Buzes ° ALBION TS sa A 12s EX 35 13 ALBION TS [or i 125 143 30 412 ALEXANDER DS = leae3 zs 45
Slide 9: SAMPLE - LIST OF APPLICATIONS
SAMPLE - LIST OF APPLICATIONS Project Number Station Dx Station Dx Feeder CHA nates Proposed Total Capacity (kW) 752 JALLANBURG TS KM3 1,056 2179 [ALLISTON TS Ms 10,000 1830 ALLISTON TS M6 10,000 63 ALMONTE TS M2s $,000 1076 JARMITAGE TS ma3 1,500 1845 ARMITAGE TS M32 10,000 1846 JARMITAGE TS M32 10
Slide 10: Dobbin TS
Dobbin TS List of Applications Project Tx Station Tx Feeder Dx Station Dx Feeder Application Name Plate Number Date Capacity (kW) Existing DOBBIN TS 20M7 N/A 1100 242 DOBBIN TS M7 27-Nov-06 8000 1215 DOBBIN TS M5 28-Sep-07 10000 List of Station Capacity Station Bus Feeder Voltage Minimum Short Circu
Slide 11: Capacity : Example 1
Capacity : Example 1 • Dobbin TS – Station capacity is 90.1MW (thermal), and – Station capacity is 447.2 MVA (short circuit) • Existing capacity allocated at Dobbin TS – Applications: 10 + 8 = 18 MW – Existing Generation: 1.1 MW – Total capacity allocated: 18 + 1.1 = 19.1 MW • Remaining Capacity (th
Slide 12: Belleville TS
Belleville TS List of Station Capacity Minimum Load Short Circuit Upstream TS Station Name Bus Name Feeder Name Voltage (kV) Thermal Capacity (MW) Upstream TS (MW) Capacity (MVA) feeder BELLEVILLE TS Total M1, M2, M3, M4, M5, M6, M7, M8, M9 44.0 57.0 703.5 80.5 Downstream DS Capacity Minimum Load Sh
Slide 13: Capacity : Example 2
Capacity : Example 2 • Belleville TS and Stirling DS – Station capacity is 80.5 MW (thermal), and – Station capacity is 703.5 MVA (short circuit) • Existing capacity allocated at Belleville TS – Applications at Belleville TS: 10 + 10 + 10 = 30 MW – Applications at Stirling DS: 0.498 MW – Existing Ge
Slide 14: LDC Threshold CIA Option
LDC Threshold CIA Option • Available for LDC owned feeders & express feeders to one LDC subject to available Gx capacity at the TS. • Only applies to inverter based CAE projects. • Allocates1 MW of capacity per TS bus for inverter based Gx connections. • LDC must have one CAE project application to
Slide 15: LDC Threshold CIA Option
LDC Threshold CIA Option • Valid for 6 months but extendable on receipt of CAE project connection status from the LDC. • More than 1 MW available with appropriate rationale. • Simplified application form for LDC’s. • Same application process - through BCC. 15
Slide 16: CIA Report
CIA Report hyd ro CONNECTION IMPACT ASSESSMENT MW Generation Project ID # [###] NOTE: The Connection Impact Assessment (CIA) for project was performed under the assumptions and key project and connection data contained in this CIA report. This CIA is valid for a period of no more than 6 months from
Slide 17: CIA Template Example
CIA Template Example • Executive Summary • Assumptions • Project Data Summary • Tx Station Impacts • Dx Feeder Impacts (Voltage, Equipment, etc.) • Appendices 17
Slide 18: CIA: Background And Objective of the Impact Assessment
CIA: Background And Objective of the Impact Assessment • Identifies the impact to the System(s). • Refers the reader to Assumptions. • Provides information about CIA revisions. • Refers to the Distribution System Code. 18
Slide 19: CIA: Executive Summary
CIA: Executive Summary • Scope of CIA • Highlights • Issues 19
Slide 20: CIA Template Example
CIA Template Example • Assumptions • Key Connection Impact Assessment (CIA) Study Data – System Data – Project and Connection Data 20
Slide 21: CIA: Impacts to the Hydro One Distribution System
CIA: Impacts to the Hydro One Distribution System • Section 4 is where Hydro One normally identifies the Distribution feeder impacts. This section is left out of the Threshold CIA because the feeder belongs to the LDC and the feeder portion is studied by the LDC. • It will be included in those CIAs
Slide 22: CIA: Impacts to the Hydro One Supply Station
CIA: Impacts to the Hydro One Supply Station • Momentary Voltage Fluctuations at Station LV Bus. • Power Flow at Station. • Impact of DG Fault Contribution on Transmission System Code Limits and Station Equipment Rating. • Feeder Relay Directioning at Supply Station (can be specified by the LDC). •
Slide 23: CIA: Other Requirements and Considerations
CIA: Other Requirements and Considerations • Interconnection Requirements • Power Quality • Revenue Metering at DG Site [Omitted if the DG Facility is in LDC Service Territory] • Protection Design Review • System Impact Assessment (SIA) Requirement 23
Slide 24: CIA: Appendices
CIA: Appendices • A - Distribution Operating Map • B - Single Line Diagram • C - System Impedance Data • D - Proponent Contact information 24
Slide 25: Summary
Summary • Reviewed LSC & LOA listings. • Reviewed the Threshold CIA option. • Outlined the contents of the HONI CIA. • We will now take questions. Please type them in. 25
Slide 26: Thank You
Thank You Please stay in touch with your Account Executive and monitor www.HydroOne.com for future developments. 26