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​Interconnection review study outline

No. Item to be checked Condition of study/evidence Reference section
1 Remaining capacity on the bus to be connected All DERs connected and to be connected to the bus

1.1.9

2 Circuit steady-state voltage At minimum and maximum circuit load, at minimum and maximum generation for all DER's power factor range 1.1.3
3

Circuit voltage

unbalance

Maximum generation at minimum and maximum circuit load 1.2.5
5 Harmonics Maximum output 1.3.6
6 Power factor Maximum output 1.2.3
7 Equipment thermal loading – circuit and substation

Maximum generation and minimum feeder load

EDTI's Distribution Planning Criteria. Contact distgen@epcor.com for more info.
8 Impact of DER fault contributions on circuit substation equipment ratings Maximum fault conditions and maximum generation 1.3.10 and 1.3.11
9 Voltage regulating and metering devices on distribution system Minimum circuit load and maximum generation 1.2.3 and 2.5
10 Synchronization Check existence 1.2.2
11 Reclosing DER to be turned off in less than 0.6 s 1.1.8
12 Transfer trip Required for DER rating equal to or greater than 1,000 kW 1.3.17
13 Anti-islanding Passive and active anti-islanding functions required 1.3.16