6.1d ERMUSR 04-09-2019 Elk River
Municipal Utilities UTILITIES COMMISSION MEETING
TO: FROM:
ERMU Commission Mike Tietz—Technical Services Superintendent
MEETING DATE: AGENDA ITEM NUMBER:
April 9, 2019 6.1d
SUBJECT:
Staff Update
ACTION REQUESTED:
None
DISCUSSION:
• In March, the locating department had a total of 107 locate tickets consisting of: two
emergency tickets, 3 cancellations, 81 normal tickets, and 13 updated tickets. This is a
32% increase in the volume of tickets from the previous month.
• Electrical technicians continue with updating the power bill, substation checks,
disconnects/reconnects, dealing with customer meters, and off-peak issues. Staff
continues to make progress on disconnecting A/C controllers. On March 27, the monthly
run of Engines 1, 2, 3, and 4 was performed with no issues.
• The annual Air Emission Inventory report was prepared and submitted to the Minnesota
Pollution Control Agency(MPCA) on March 20. This report accounts for specific
amounts of air pollutants and greenhouse gases discharged into the atmosphere from
running the generators in 2018.
• The mapping department continues to enter GPS points and attribute points for all of
our systems assets within the ESRI ArcView GIS system. The locators continue to collect
GPS points and enter data into the GIS system as time allows.
• The VHF radio repeater will need to be relocated to a new site by June 1 due to the
upcoming reconditioning of the Auburn Street Water Tower. Staff has been working
with a vendor to determine a new optimal location, and to replace some faulty
equipment.
• On February 28 customers fed from the Otsego substation experienced a service
interruption due to a broken bell on the Great River Energy(GRE) transmission line. On
March 16 the same customers experienced a similar outage due to a broken insulator
on the GRE transmission line. Outage reports for both are attached.
Page 1of2
185
ATTACHMENTS:
• GRE Daily Outage Report and Photos 022819
• GRE Daily Outage Report and Photos 031619
Page 2 of 2
186
ElGREAT
RIVER System Operations Outage Tracking - Daily Outage Report
ENERGY.,.
Wright-Hennepin Cooperative Electric Association
Outage ID: 16837 Reason: 1F,clear,calm.At 2106,MOS EMSM4 was opened&Elk River 6NB6 was closed.At 2146,WH reported that
Albertville sub inspected OK&opened SW EMS2.At 2147,MOS EMSM4 was closed but tripped out 1 sec later on
time overcurrent(suspect high impedance due to conductor laying on snow).At 2148,MOS EMSM4 was opened
&Elk River 6NB6 was closed.At 2151,Maple Lake 1NB1 was closed.At 2221,WH opened SW EMS1&closed SW
EMS2.At 0046,broken bell found on EM str#114,conductor was laying on snow.Area was secured for repair on
3/1.RTN TBD.
Breaker Distance Fault Type
Elk River S6 6NB6-Maple Lake Line PRI 9.19 miles CG
Elk River S6 6NB6-Maple Lake Line SEC 8.92 miles CG
Maple Lake 1NB1-Elk River Line 16.04 miles CG
Line Init.Cause Sus.Cause Start End Duration
600051 69 Elk River 6NB6-Maple Lake 1NB1(BL,EM, EMX) IF CF 02/28/2019 21:05 02/28/2019 22:21 1 hour 16
minutes
Substation T/D Consumers Init.Cause Sus.Cause Start End Duration
HXH003 Albertville T 1,840 IF CF 02/28/2019 21:05 02/28/2019 22:21 1 hour 16
minutes
HXH014 Black Lake T 1,344 IF CF 02/28/2019 21:05 02/28/2019 21:51 46 minutes
OUTG-018-Daily Outage Report - 1- 3/1/19 10:37:01 AM
187
Photos from 2-28-19 GRE Outage Report
k.
z.
g
t
.. / �.�._,...,-- a ,LLB
7 „�' t..
J
,q.
Y^
i
\ ',
.1 -".."41. lk, . ...,,_,:_,.._41:_::,„...,:.
.44
g
188
IllGREAT
RIVER System Operations Outage Tracking - Daily Outage Report
ENERGY-
Wright-Hennepin Cooperative Electric Association
Outage ID: 16858 Reason: 31F,clear,winds NW 10mph.Line tripped&reclosed auto twice,held 25 sec,tripped&reclosed auto twice,then
tripped to lockout.At 1144,At 1216,MOS EMSM4 was opened by SCADA&Elk River 6NB6 was closed.At 1207,
WH crew opened SW BLS1&Maple Lake 1NB1 was closed by SCADA.WH crews reported broken insulator at BL
str#14.Top phase laying on bottom phase insulator.At 1217,WH opened SW H14S1&started backfeeding
Black Lake load.At 1246,MOS EMSM4 was closed.At 1315,all load backfed.All 3 insulators were replaced&
RTN 1753.
Breaker Distance Fault Type
Elk River 56 6NB6-Maple Lake Line PRI 21.28 miles BG
Elk River 56 6NB6-Maple Lake Line SEC 21.03 miles BG
Maple Lake 1NB1-Elk River Line 6.11 miles BG
Line Init.Cause Sus.Cause Start End Duration
600051 69 Elk River 6NB6-Maple Lake 1NB1(BL,EM,EMX) IF IF 03/16/2019 11:42 03/16/2019 13:15 1 hour 33
minutes
Substation T/D Consumers Init.Cause Sus.Cause Start End Duration
HXH003 Albertville T 1,840 IF IF 03/16/2019 11:42 03/16/2019 12:07 25 minutes
HXH014 Black Lake T 1,344 IF IF 03/16/2019 11:42 03/16/2019 13:15 1 hour 33
minutes
Note: Backfed.
OUTG-018-Daily Outage Report - 1- 3/18/19 3:33:41 PM
189
Photos from 3-16-19 GRE Outage Report
If
. ( t
ii\
a
i
t,
r.
a
ir
ti".--
190