20200904Staff 1-12 to IPC.pdf

EDWARD JEWELL
DEPUTY ATTORNEYS GENERAL
IDAHO PUBLIC UTILITIES COMMISSION
PO BOX 83720
BOISE, IDAHO 83720-0074
[phone]
IDAHO BAR NO. 10446
IN THE MATTER OF IDAHO POWER
COMPANY'S APPLICATION TO
ESTABLISH TARIFF SCHEDULE 68 _
INTERCONNECTIONS TO CUSTOMER
DISTRIBUTED ENERGY RESOURCES
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Street Address for Express Mail:
1I33I W CHINDEN BVLD, BLDG 8, SUITE 2OI-A
BOISE, ID 83714
Attomey for the Commission Staff
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
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CASE NO. IPC.E-20.30
FIRST PRODUCTION
REQUEST OF THE
COMMISSION STAFF TO
IDAHO POWER COMPANY
The Staff of the Idaho Public Utilities Commission, by and through its attorney of record,
Edward Jewell, Deputy Attorney General, request that Idaho Power Company (Company) provide
the following documents and information as soon as possible, or by FRIDAY,
SEPTEMBER 25, 2020.
This production Request is continuing, and the Company is requested to provide, by way of
supplementary responses, additional documents that it or any person acting on its behalf may later
obtain that will augment the documents produced.
please provide answers to each question, supporting workpapers that provide detail or are
the source of information used in calculations. The Company is reminded that responses pursuant
to Commission Rules of Procedure must include the name and phone number of the person
preparing the document, and the name, location and phone number of the record holder and if
different the witness who can sponsor the answer at hearing if need be. Reference IDAPA
31.01.01.228.
FIRST PRODUCTION REQUEST
TO IDAHO POWER SEPTEMBER4,2O2O
In addition to the written copies provided as response to the questions, please provide all
Excel and electronic files on CD with formulas activated.
REQUEST NO. 1: In its proposed Schedule 68, the Company defines a Distributed Energy
Resource (DER) as "...a source of electric power that is not directly connected to the bulk power
system. Any combination of Generation Facilities and/or Energy Storage devices connected in
Parallel is considered a DER." Please define the term "bulk power system."
REQUEST NO. 2: On page 5 of proposed Schedule 68 the Company states,
"Disconnection Equipment will be installed at an electrical location on the Customer Generator's
side of the Company's retail metering point to allow complete isolation of the Customer's DER and
lnterconnection Facilities from the Customer Generator's other electrical load and service." In the
same section, the Company provides the following disclaimer, "The disconnection may result in
interruption of both energy deliveries from the Customer Generator System to the Company as well
as intemrption of energy deliveries from the Company to the Customer Generator."
Given that the disconnection equipment is located so that it completely isolates the
Customer's DER/Interconnection facilities from the Customer's electrical load and service, please
explain why disconnection could result in interruption of energy deliveries to the customer.
REeUEST NO.3: In Table 1 of Schedule 68, the Company proposes default settings of
yr-0.92oh,y2:0.98%o,Yfl.O3oh,and V+ :1.060/o. Please confirm that these should actually read
Yr0.92,Vz:0.98, Vr=l.03, and Va:l.06 per unit (pu).
REeUEST NO. 4: The values of Vs and V+ in proposed Schedule 68 (Table l) differ from
the default settings recommended in Table 8 of IEEE 1547-2018. Please explain why the Company
proposes these particular values.
REQUEST NO. 5: Please provide the following:
a. The list of smart inverters currently approved by Idaho Power for use on its system;
b. The criteria for determining whether a smart inverter can be added to the list; and
c. The process that is used for adding a smart inverter to the approved list.
FIRST PRODUCTION REQUEST
TO IDAHO POWER SEPTEMBER 4,20202
REQUEST NO. 6: Please provide any studies conducted by the Company or on its behalf
regarding the ability of the Company's proposed ride-through settings to prevent cascading in
portions of the grid with high DER penetration rates.
REQUEST NO. 7: Please provide any studies conducted by the Company or on its behalf
regarding the Conservation Voltage Reduction (CVR) value of the Company's Smart Inverter
Policy.
REQUEST NO. 8: How does the Company propose to prevent islanding?
REQUEST NO. 9: Does the Company propose that the voltage-reactive power settings on
page 7 of Schedule 68 apply to non-exporting systems? If so, please explain why.
REQUEST NO. 10: Will the inverter settings described on page 7 of Schedule 68 reduce
the active power delivered by a customer's generator to the customer when 100% of the energy it
produces is used by the customer, and none is being exported to the grid?
REQUEST NO. 1l: Will the inverter settings described on page 7 of Schedule 68 reduce
the active power delivered by a customer's generator to the customer when some of the energy it
produces is being exported to the grid?
REeUEST NO. 12: On page 8 of its Application, the Company states that it will notiff
interested parties of the request regarding smart inverters and send a communication directly to
installers known to be operating in its service areas.
a. Please provide copies of the notifications and communications that either have been,
or will be sent to interested parties, stakeholders, and installers.
b. Please explain how the Company identified interested parties, stakeholders, and
installers.
c. Please provide the dates on which notifications and communications were sent or
will be sent.
FIRST PRODUCTION REQUEST
TO IDAHO POWER SEPTEMBER 4,20203
DATED at Boise,Idaho, this utvL day of September 2020.
Edward J
Deputy General
Technical Staff: Mike Morrison (1-12)
i :umisc:prodreq/ipce20.3Oejmm prod req I
FIRST PRODUCTION REQUEST
TO IDAHO POWER 4 SEPTEMBER 4,2020
CERTIFICATE OF SERVICE
I HEREBY CERTIFY THAT I HAVE THIS 4TH DAY OF SEPTEMBER 2020,
SERVED THE FOREGOING F'IRST PRODUCTION REQUEST OF THE COMMISSION
STAFF TO IDAHO POWER COMPANY, IN CASE NO. IPC-E-20-30, BY E-MAILING A
COPY THEREOF, TO THE FOLLOWING:
LISA D NORDSTROM
REGULATORY DOCKETS
IDAHO POWER COMPANY
PO BOX 70
BOISE ID 83707-0070
E-MAIL : lnordstrom(.i.ilidahopower. com
dockets(@idahoporver.corn
CONNIE G ASCHENBRENNER
TIMOTHY E TATUM
IDAHO POWER COMPANY
PO BOX 70
BOISE rD 83707-0070
E-MAIL : caschenbrennerfg)iclahopower. com
ttatum fu) i dah opowqr. cet11
BENJAMIN J OTTO
ID CONSERVATION LEAGUE
710 N 6TH STREET
BOISE ID 83702
E-MAIL : [e-mail]
CERTIFICATE OF SERVICE