Toronto Hydro - Electric System

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1 Toronto Hydro - Electric System FIT Commissioning Requirements and Reports Comments and inquiries can be ed to: FIT@torontohydro.com Customers without access can submit through regular mail any comments and inquiries to: Generation Planning Capacity Planning Department Toronto Hydro-Electric System Limited 3rd Floor 500 Commissioners Street Toronto, Ontario M4M 3N7 Attn: Gary Thompson, Supervisor To contact Toronto Hydro call (416) or at: FIT@torontohydro.com Generation Planning Department Asset Management Division COPYRIGHT TORONTO HYDRO-ELECTRIC SYSTEM LIMITED. ALL RIGHTS RESERVED Toronto Hydro accepts no responsibility or liability for any of the information provided in this document, which has been provided for informational purposes only. Meeting these requirements does not necessarily constitute an acceptable facility design. Toronto Hydro reserves the right to amend any of these requirements at any time.

2 TABLE OF CONTENTS INTRODUCTION... 3 FIT PROJECT COMMISSIONING SUMMARY... 4 EQUIPMENT VERIFICATION AND COMMISSIONING TESTING CHECKLIST... 5 EQUIPMENT RATINGS AND REQUIREMENTS... 5 ELECTRICAL SPECIFICATIONS... 6 CEASE TO ENERGIZE... 6 CEASE TO ENERGIZE - ON SITE TESTING... 7 MONITORING AND CONTROL... 8 DEFECIENCIES... 9 SUPPLEMENTARY DOCUMENTATION VERIFICATION OF REPORT AND SIGNAURE BLOCK COMMISSIONING TEST LAYOUT & HARMONIC DISTORTION TABLE...11 APPENDICIES...12 FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 2

3 INTRODUCTION The technical requirements for parallel generation are in place to ensure public and employee safety, protect the integrity of Toronto Hydro s system, and guarantee reliable and quality service to Toronto Hydro customers. The technical requirements in this document are for the protection of Toronto Hydro's facilities, and the Generator should satisfy itself as to any requirements for the protection of its own facilities. Toronto Hydro has the right to witness the commissioning and testing of the connection of generation facilities greater than 10kW to its distribution system. The Customer shall notify Toronto Hydro no later than fifteen working days prior to scheduled commissioning tests to enable Toronto Hydro to witness the commissioning tests. Whether Toronto Hydro attends the testing or not, the Customer shall submit a FIT Commissioning Report which will include: a) all required items as outlined in this document; b) single line electrical drawing which identifies the as-built Connection Point (must be signed, dated and sealed by a Professional Engineer) c) letter of confirmation that equipment and installation meets CSA and/or other applicable electrical safety standards (conducted by an Independent P.Eng) d) applicable ESA/CSA certificates and authorization forms e) PV string tests The commissioning report shall be submitted for approval before the operation of the distribution generation facility. The verification of the FIT Commissioning Report must be signed and sealed by a 3 rd Party Independent Engineer. This requirement does not disqualify the involvement of the design engineer from the commissioning tests. The design engineer retains the option of participating in the commissioning of the system. The requirements below are primarily from Appendix F.2 of the Distribution System Code s ( DSC ), Institute of Electrical and Electronics Engineers ( IEEE ) Standard 1547, and CAN/CSA C22.2 No Generators are encouraged to consult the listed references for more details about every item. In situations where modifications are required to the incoming supply arrangement, the Generation facility shall also satisfy the following: Toronto Hydro Requirements for Design and Construction of Customer-Owned Substation High Voltage Substations. It is the Generator s responsibility to ensure that all requirements are met. Additional requirements may be necessary to address unique situations, and Generators will be advised of any additional requirements at the appropriate assessment stage. FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 3

4 FIT PROJECT COMMISSIONING SUMMARY Project Details FIT Reference No. Project Address Project Name System Size (kw) Transformer Station and Bus Feeder Name Utility Transformer Size (kva) Utility Transformer Voltage (HV/LV) Number of Strings Number of Inverters Inverter Manufacturer Inverter Serial Numbers Contact Information DG System Owner DG System Owner Contact Design Engineer Commissioning Engineer 3 rd Party Independent Engineer Toronto Hydro Representative Notes: PEO File No. Date of Commissioning General Weather Conditions Power Analyser Notes: Commissioning Information FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 4

5 Equipment Verification and Commissioning Testing Checklist Results: = Pass = Fail EQUIPMENT RATINGS and REQUIREMENTS Commissioning Engineer to verify the following items by visual inspection, calculations, and ESA/CSA approvals. Item to be Verified Standards Result Notes Inverters, circuit breakers and protective relays are functioning correctly Inverters, circuit breakers and protective relays are within Thermal Loading Limits Fault withstanding rating of electrical equipment is higher than maximum fault current possible to flow through the equipment DSC Appendix F.2 Section 5 Toronto Hydro Requirement Regulating devices and metering devices are suitable for bi-directional flow All grounding is in accordance with the Ontario Electrical Safety Code CSA C22.3 No 9-08 Inverter and related equipment is UL1741, IEEE 1547, and CSA certified Toronto Hydro Requirement FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 5

6 Procedure: ELECTRICAL SPECIFICATIONS 1. Prior to system start-up, the steady-state parameters listed in this section will be monitored, and recorded, for a minimum of 1 minute at Point A on Figure DG system will be turned on upon the completion of Step 1 3. Upon system start-up, the steady-state parameters listed in this section will be monitored, and recorded, during the inverter start up cycle 4. Once the inverter(s) begin to produce power, the steady-state parameters listed in this section will be monitored, and recorded, for a minimum of 5 minutes at Point A on Figure 1. ** Steady-state parameters will be monitored and recorded using an IEC Class A certified Power Analyser. Recording interval time must be 0.5sec. Power Analyzer must have waveform capture capability. Item to be Verified Standards Result Notes Voltage variations at the point of common coupling are limited to +/- 6% of the nominal voltage Confirm frequency is operating in the range of 59.3Hz to 60.5Hz Maximum Harmonic Current Distortion is within limits (see Table 1) Power Factor is within 0.9 and 1.1 Steady State Plots of Electrical Specifications are provided in Appendix E CSA C22.2 No Clause CSA C22.2 No Clause CSA 22.2 No CSA C22.2 No Clause Toronto Hydro Requirement CEASE TO ENERGIZE Commissioning Engineer to review Inverter Certificates and Inverter Manufacturer Production Test Reports in order to fulfill the following items. Documentation to be provided in Appendix D Item to be Verified Standards Result Notes Interface protection of the generation facility ceases to energize under the following conditions: Internal Faults at the Customer s Facility External Faults on the Toronto Hydro Distribution system Under Voltage Protection is functioning Over Voltage Protection is functioning Under Frequency Protection is functioning Over Frequency Protection is functioning IEEE 1547 Clause CSA C22.2 No Clause IEEE 1547 Clause CSA C22.2 No Clause IEEE 1547 Clause CSA C22.2 No Clause FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 6

7 Procedure: CEASE TO ENERGIZE - ON SITE TESTING 1. During normal operation, the steady-state parameters (output power, voltage, current, frequency, harmonics and power factor) of the system will be monitored, and recorded, for a minimum of 1 minute at Point A on Figure After 1 minute has elapsed, the main exterior DG disconnect switch will be tripped open. 3. All inverter outputs will be tested to ensure that the inverters have ceased to energize during the simulated utility outage. DG disconnect switch must remain open for a minimum of 2 minutes. 4. Upon confirmation of Step 3, the main exterior DG disconnect switch shall be re-closed. 5. All inverter outputs will be monitored to ensure that the system has ceased to energize for 5 minutes, as per (CSA /UL1741) 6. After the inverters begin producing power, the steady-state parameters of the system will be monitored, and recorded, for a minimum of 5 minutes, as per step 1. ** Steady-state parameters will be monitored and recorded using an IEC Class A certified Power Analyser. Recording interval time must be 0.5sec. Power Analyzer must have waveform capture capability. Item to be Verified Standards Result Notes Output of inverter(s) is within Electrical Specifications limitations. (Step 1) The generation facility disconnects from the Toronto Hydro system upon the loss of utility supply voltage in one or more phases. (Step 3) System ceased to energize for 5 minutes, upon the reclosing of the main exterior DG disconnect switch (Step 5). Output of inverter(s) is within Electrical Specifications limitations. (Step 6) Plots of steady- state parameters are provided in Appendix F 1. Output Power 2. Current 3. Voltage 4. Frequency 5. Harmonics - Frequency Plot 6. Power Factor Plots are to be divided into 2 time frames: a) Step 1 to 5: Normal operation, tripping of switch and system re-activation b) Step 6: 5 min interval after anti-islanding test Waveform captures of Step 2 are provided for each parameter (1 to 6) in Appendix G Waveforms captures must depict: a. minimum of 2 cycles before switch is pulled b. minimum of 5 cycles after switch is pulled Toronto Hydro Requirement IEEE 1547 Clause CSA C22.2 No Clause Toronto Hydro Requirement Toronto Hydro Requirement Toronto Hydro Requirement FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 7

8 MONITORING and CONTROL Item to be Verified Standards Result Notes The Generation Facility has provision for real time monitoring items: 1. Analogue Quantities a) Apparent Power (KVA) output and Power Factor and direction for each unit or total for the DG Facility b) Frequency (Hz) c) Phase to phase voltage (V) d) Three phase currents (A) 2. Device Statuses a) Status of consolidated DG units 3. Unsolicited response is sent to THESL when a) Voltage or frequency has reached +/-6% of nominal value b) Current or apparent power has reached 100% of max generation or -1% of max generation c) Power factor of the DG Facility has fallen below 0.9 or over 1.1 d) Status of DG facility has changed The Generation Facility has provision for real time control: Toronto Hydro Requirement the ability to remotely dispatch the generator (on/off) Toronto Hydro Requirement FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 8

9 DEFICIENCIES Item Deficiency Resolution FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 9

10 Certificate of Inspection from the ESA (Appendix C) Authorization to Connect from ESA (Appendix C) Single line electrical drawing which identifies the asbuilt Connection Point (sealed by P.Eng) (Appendix A) Letter of confirmation that equipment and installation meets CSA and/or other applicable electrical safety standards (conducted by an Independent P.Eng) (Appendix B) PV string tests (Appendix I) SUPPLEMENTARY DOCUMENTATION Yes No Notes VERIFICATION OF REPORT AND SIGNAURE BLOCK DG System Owner Name of DG System Owner (Print) Signature of DG System Owner Date (dd/mm/yyyy) Name of Professional Engineer (Print) Independent Engineer Signature of Professional Engineer Date (dd/mm/yyyy) Licensed Professional Engineer Province of Ontario - Seal FIT Commissioning Requirements and Reports - Rev2 - July 23, 2013 Page 10

11 DG Disconnect Switch A Figure 1: Commissioning Test Layout Table 1: Limit of Current Harmonic Distortion

12 APPENDIX A As Built Single Line Diagram [To be inserted]

13 APPENDIX B Letter of Confirmation - conducted by an Independent P.Eng [To be inserted]

14 APPENDIX C Applicable ESA & CSA Certificates [To be inserted]

15 APPENDIX D Inverter(s) Documentation (Certificates, Production Test Reports, Data Sheets, etc) [To be inserted]

16 APPENDIX E Electrical Specifications - Steady State Plots [To be inserted]

17 APPENDIX F Cease to Energize - On Site Testing: Plots [To be inserted]

18 APPENDIX G Cease to Energize - On Site Testing: Waveform Captures [To be inserted]

19 APPENDIX H Power Analyzer Documentation (Data Sheets, Compliance Certificate, etc) [To be inserted]

20 APPENDIX I PV String Tests [To be inserted]

21 APPENDIX J Miscellaneous Documentation [To be inserted]

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