S.D. Admin. R. 20:10:36:55

Current through Register Vol. 50, page 159, June 17, 2024

Section 20:10:36:55 - Tier 4 interconnection system impact study

The public utility shall commence the tier 4 interconnection system impact study upon receipt of an executed interconnection system impact study agreement and study deposit. The study shall be completed within the timeline agreed to between the parties at the scoping meeting or interconnection feasibility study results meeting. The study must evaluate the adverse system impacts identified in the interconnection feasibility study, and study other potential impacts including those identified in the feasibility study results meeting or scoping meeting.

The study shall consider all generating facilities that, on the date the interconnection system impact study is commenced, are directly interconnected with the public utility's system, have a pending higher queue position to interconnect to the system, or have a signed interconnection agreement.

At a minimum, the study may include a short circuit analysis, a stability analysis, a power flow analysis, voltage drop and flicker studies, protection and set point coordination studies, and grounding reviews.

The interconnection system impact study report shall:

(1) State the underlying assumptions of the study;

(2) Show the results of the analyses;

(3) Identify any interconnection facilities and system upgrades required to allow the proposed interconnection to occur; and

(4) Include a good faith, non-binding estimate of the identified interconnection facilities and system upgrades and an estimated delivery schedule.

If the applicant sponsored a separate independent system impact study, the public utility must also evaluate and address any alternative findings from that study at the applicant's expense.

If interconnection facilities or system upgrades are found to be necessary in the interconnection system impact study, an interconnection facilities study is required.

S.D. Admin. R. 20:10:36:55

35 SDR 305, effective 7/1/2009.

General Authority: SDCL 49-34A-27, 49-34A-93.

Law Implemented: SDCL 49-34A-27, 49-34A-93.