Slide 1: Technical Interconnection Requirements for Distributed Generation
TECHNICAL INTERCONNECTION REQUIREMENTS FOR DISTRIBUTED GENERATION Micro Generation & Small Generation, 3-phase, less than 30 kW Audio Dial-in Phone Numbers: Toll Free 1 (877) 385-4099 Toronto (416) 883-0133 Participant Access code: 2792418 #
Slide 2: Agenda
Agenda • INTRODUCTION • SCOPE • STANDARDS • MICRO GENERATION (10kW or less) • GENERAL TECHNICAL REQUIREMENTS • ADDITIONAL REQUIREMENTS FOR 3-PHASE GENERATION UP TO 30 KW 2
Slide 3: Introduction
Introduction • Renewable power expected to increase significantly between now and 2025 due to the Green Energy Act (GEA) • Distributed Generation (DG) is not without its challenges: – Distribution system was not designed to accommodate and integrate large amounts of distributed generation – Must int
Slide 4: Introduction
Introduction • Technical Interconnection Requirements for Micro Generation & Small Generation, 3-phase, less than 30 kW was created to: – Help you understand your role and responsibilities when connecting to the distribution system as a potential DG 4
Slide 5: Scope
Scope • These Technical Interconnection Requirements apply to the following individual generating facilities: – Micro generation projects where the total generation capacity at the site is 10 kW or less – Three-phase (3 Ø) generation projects where the total generation capacity at the site is less t
Slide 6: Scope (continued)
Scope (continued) • These Technical Interconnection Requirements are not intended to apply to emergency backup generation Note: – Ontario Energy Board (OEB) has specified a maximum generating capacity of 10kW for Micro-generators – Ontario Power Authority (OPA) has specified that the maximum generat
Slide 7: Scope (continued)
Scope (continued) • Refer to “Distributed Generation Technical Interconnection Requirements, Interconnection at Voltages 50kV and Below” document for: – Single-phase installations with an aggregate capacity greater than10 kW; and – Three-phase installations with an aggregate capacity greater than or
Slide 8: TIR Reference Document Table
TIR REFERENCE DOCUMENT TABLE 8
Slide 9: Standards
Standards • Common standards are critical to the safe distribution of electricity • Owners and Operators of DG facilities are responsible to ensure their generators comply with all applicable Canadian, Ontario, and local codes and standards. • To qualify for interconnection, generators must comply w
Slide 10: Common Requirements for Micro and Small Generation
Common Requirements for Micro and Small Generation 10
Slide 11: Micro Generation 10kw or Less
Micro Generation 10kw or Less Section 5 of the TIR document: • General Technical Requirements • System Grounding • Technical Accommodation Requirements • Customer Specific Requirements • System Requirements • Protection and Control Requirements • Operating Requirements • Revenue Metering Requirement
Slide 12: System Grounding
System Grounding • The DG system must be grounded in accordance with all applicable codes • DG equipment must be compatible with the neutral grounding method in use on the Hydro One system • 3-phase DG connecting to Hydro One four-wire multi-grounded primary feeders must not cause the maximum “Tempo
Slide 13: Technical Accommodation Requirements
Technical Accommodation Requirements Hydro One reviews all applications with respect to two categories of technical accommodation requirements: •Customer Specific Requirements •System Requirements Any measures taken to meet these requirements will be at the generator owner’s cost. 13
Slide 14: Technical Accommodation Requirements (Cont'd)
Technical Accommodation Requirements (Cont’d) • Customer Specific Requirements – Total connected generator capacity shall not cause voltage rise across the secondary service conductor to exceed 1% of operating voltage – Total generator capacity shall not exceed 50% of the transformer kVA rating if t
Slide 15: Technical Accommodation Requirements (Cont'd)
Technical Accommodation Requirements (Cont’d) • System Requirements – Aggregated generation capacity shall not exceed 7% of annual line section peak load – Generating facility shall not cause fault current to exceed100 percent of short circuit interrupting capability of equipment – Voltage unbalance
Slide 16: Technical Accommodation Requirements (Cont'd)
Technical Accommodation Requirements (Cont’d) •Most Restraining Accommodation Requirements 4.8 kV Total downstream DG Voltage-rise due to DG < 1% capacity < 7% of downstream peak load PCC PCC 120/240 V PCC PCC Total connected capacity < 50% of transformer rating for transformers less than 50 kVA 16
Slide 17: Protection and Control Requirements
Protection and Control Requirements • Required for safe, reliable and efficient operation of the electrical distribution system • DG systems are complex and sophisticated • Generators must be aware of the key points in protecting themselves and their systems against damage 17
Slide 18: Protection and Control Requirements
Protection and Control Requirements Includes: • Interrupting and isolating devices • Over current and ground fault protection • Operate within voltage and frequency variations • Paralleling generation • System protection • Feeder Reclosing coordination • Anti-Islanding 18
Slide 19: Operating Requirements
Operating Requirements • DG facilities must comply with operating requirements that Hydro One has in place to safeguard the reliability and integrity of the distribution system • Failure to comply may result in disconnection of the facility from the distribution system, in accordance with the requir
Slide 20: Revenue Metering Requirements
Revenue Metering Requirements • Metering equipment must be revenue class and shall comply with Measurement Canada and Hydro One requirements • Revenue metering shall be in accordance with Hydro One’s Policy document: – “NOP–041” Metering for Embedded Generator Connecting to Distribution Systems 20
Slide 21: Revenue Metering Requirements
Revenue Metering Requirements • For “Parallel” connections the customers generator meter is to be located beside existing load meter • For “Stand Alone” connections the meter must be located no more than 30m from the transformer (or crossing pole) and be accessible year round • “Series Configuration
Slide 22: Metering Configurations
Metering Configurations Net Meter Micro Direct Micro Parallel M R ev e n ue M e te r Fused Disconnect Fused Disconnect D i sc o n ne c t Disconnect Transformer H y d ro O ne Transformer Hydro One R eq u irem en t Requirement Disconnect Generator Disconnect M Hydro One T ra n s fo rm e r Generator M
Slide 23: Maintenance
Maintenance • DG owner must keep the DG facility in a safe and proper working condition as recommended by the equipment manufacturer and must keep records of maintenance • Interconnection system protection functions operation must be verified according to the manufacturer’s recommended schedule, or
Slide 24: Additional Requirements for 3-Phase Generation less than 30 kW
Additional Requirements for 3-Phase Generation less than 30 kW 24
Slide 25: 3-Phase Generation Less Than 30 kW
3-Phase Generation Less Than 30 kW • Specific and additional requirements are: – DG facilities must ensure that upon loss of voltage in one or more phases of the main 3- Ø supply, the generator shall: • be automatically disconnected from the system; and • not be reconnected until the normal voltage
Slide 26: Important Contact Information
Important Contact Information Hydro One Web: www.HydroOne.com E-mail: DXGenerationConnections@HydroOne.com Phone: 1-877-447-4412 (Option #2) Ontario Power Authority Web: www.powerauthority.on.ca Phone: 1-888-387-3403 26
Slide 27: Questions
Questions hyd rg 27