4.1 ERMUSR 02-13-2018 - Laserfiche WebLink

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SCHEDULE 3—INTERCONNECTION PROCESS,TECHNICAL REQUIREMENTS,AND OPERATING PROCEDURES (7)Remote Control, SCADA and Remote Monitoring tests—All remote control functions and remote monitoring points shall be verified operational. In some cases, it may not be possible to verify all of the analog values prior to energization.Where appropriate,those points may be verified during the energization process (8)Phase Tests—the Interconnection Customer shall work with the Area EPS operator to complete the phase test to ensure proper phase rotation of the Generation and wiring. (9)Synchronizing test — The following tests shall be done across an open switch or racked out breaker. The switch or breaker shall be in a position that it is incapable of closing between the Generation System and the Area EPS for this test.This test shall demonstrate that at the moment of the paralleling-device closure, the frequency, voltage and phase angle are within the required ranges, stated in IEEE 1547. This test shall also demonstrate that is any of the parameters are outside of the ranges stated; the paralleling-device shall not close. For inverter-based interconnected systems this test may not be required unless the inverter creates fundamental voltages before the paralleling device is closed. ii) On-Line Commissioning Test — the following tests will proceed once the Generation System has completed Pre-testing and the results have been reviewed and approved by the Area EPS operator. For smaller Generation Systems the Area EPS may have a set of standard interconnection tests that will be required. On larger and more complex Generation Systems the Interconnection Customer and the Area EPS operator will get together to develop the required testing procedure. All on-line commissioning tests shall be based on written test procedures agreed to between the Area EPS operator and the Interconnection Customer. Generation System functionally shall be verified for specific interconnections as follows: (1)Anti-Islanding Test—For Generation Systems that parallel with the utility for longer than 100msec. (a)The Generation System shall be started and connected in parallel with the Area EPS source (b)The Area EPS source shall be removed by opening a switch, breaker etc. (c)The Generation System shall either separate with the local load or stop generating (d)The device that was opened to remove the Area EPS source shall be closed and the Generation System shall not re-parallel with the Area EPS for at least 5 minutes. iii) Final System Sign-off. (1)To ensure the safety of the public, all interconnected customer owned generation systems which do not utilize a Type-Certified system shall be certified as ready to operate by a Professional Electrical Engineer registered in the State of Minnesota, prior to the installation being considered ready for commercial use. iv) Periodic Testing and Record Keeping Interconnection Process for Distributed Generatte(roSystems