IEEE Power & Energy Magazine - November/December 2020 - 82

ork

tw

n
mu

e
nN

tio

ica

DTT
Receiver

m
Co

Br

ea

DTT
Transmitter

ke

r

Relay

DER

Substation
Island

figure 9. The basic components of a DTT scheme. (Source: EPRI.)

detection of abnormal low voltage or a momentary voltage sag).
What Are Your Current Practices to Address Risk of Islanding
Reconnection of the DER plants is
for DER? Pick One That Best Fits Your Company
delayed until approximately 5 min
after healthy voltage is detected.
Require DTT Based on Specific Criteria,
21%
and Are Happy With It
Dominion Energy installs
multifunction relays with reclosRequire DTT, Generally Happy,
ers including both revenue and
41%
But Looking for Alternatives
power-quality (PQ) monitoring
Avoiding DTT by Considering Load-Match
at the POI for sites larger than
Improbability and Other Means Such as
31%
1 MW. The two relays and meters
Reclose Blocking
are located on separate poles.
Have Not Needed DTT for Inverters,
These provide event oscillography
Just Larger Synchronous Generation
for 1-2 s at 128 points per cycle.
Setting the trigger properly offers
None of the Above
7%
excellent visibility. The investment in these multifunction relays
provides the data necessary for
figure 10. A recent EPRI survey of 76 utilities regarding the application of DTT.
forensic studies and has proven to
be valuable. When any anomalies
are detected, the PQ group installs sophisticated PQ
and practices are well established. When aggregate
meters for further investigation.
DER exceeds one-third of the minimum load on a line
section, DTT is required. This DTT uses a permissive
signal that fails to open if communications are lost for Updating Inverter Onboard Detection
any reason. When certified PV plant aggregate DERs Onboard active islanding detection is an important alterare less than one-third of the minimum load, the in- native for inverter-based DERs. Since IEEE Standard
verters' built-in protection for unintended islanding 1547-2003, it has been a requirement for the certification
is relied upon. Automatic reclosing of the main-line of DERs; however, the methods are often treated as proprisectionalizing device is allowed only when the POI etary information, and they are not well defined in specirecloser opening is caused by a fault (identified by the fications. Recent studies by EPRI and Sandia National
82	

ieee power & energy magazine	

november/december 2020



IEEE Power & Energy Magazine - November/December 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - November/December 2020

Contents
IEEE Power & Energy Magazine - November/December 2020 - Cover1
IEEE Power & Energy Magazine - November/December 2020 - Cover2
IEEE Power & Energy Magazine - November/December 2020 - Contents
IEEE Power & Energy Magazine - November/December 2020 - 2
IEEE Power & Energy Magazine - November/December 2020 - 3
IEEE Power & Energy Magazine - November/December 2020 - 4
IEEE Power & Energy Magazine - November/December 2020 - 5
IEEE Power & Energy Magazine - November/December 2020 - 6
IEEE Power & Energy Magazine - November/December 2020 - 7
IEEE Power & Energy Magazine - November/December 2020 - 8
IEEE Power & Energy Magazine - November/December 2020 - 9
IEEE Power & Energy Magazine - November/December 2020 - 10
IEEE Power & Energy Magazine - November/December 2020 - 11
IEEE Power & Energy Magazine - November/December 2020 - 12
IEEE Power & Energy Magazine - November/December 2020 - 13
IEEE Power & Energy Magazine - November/December 2020 - 14
IEEE Power & Energy Magazine - November/December 2020 - 15
IEEE Power & Energy Magazine - November/December 2020 - 16
IEEE Power & Energy Magazine - November/December 2020 - 17
IEEE Power & Energy Magazine - November/December 2020 - 18
IEEE Power & Energy Magazine - November/December 2020 - 19
IEEE Power & Energy Magazine - November/December 2020 - 20
IEEE Power & Energy Magazine - November/December 2020 - 21
IEEE Power & Energy Magazine - November/December 2020 - 22
IEEE Power & Energy Magazine - November/December 2020 - 23
IEEE Power & Energy Magazine - November/December 2020 - 24
IEEE Power & Energy Magazine - November/December 2020 - 25
IEEE Power & Energy Magazine - November/December 2020 - 26
IEEE Power & Energy Magazine - November/December 2020 - 27
IEEE Power & Energy Magazine - November/December 2020 - 28
IEEE Power & Energy Magazine - November/December 2020 - 29
IEEE Power & Energy Magazine - November/December 2020 - 30
IEEE Power & Energy Magazine - November/December 2020 - 31
IEEE Power & Energy Magazine - November/December 2020 - 32
IEEE Power & Energy Magazine - November/December 2020 - 33
IEEE Power & Energy Magazine - November/December 2020 - 34
IEEE Power & Energy Magazine - November/December 2020 - 35
IEEE Power & Energy Magazine - November/December 2020 - 36
IEEE Power & Energy Magazine - November/December 2020 - 37
IEEE Power & Energy Magazine - November/December 2020 - 38
IEEE Power & Energy Magazine - November/December 2020 - 39
IEEE Power & Energy Magazine - November/December 2020 - 40
IEEE Power & Energy Magazine - November/December 2020 - 41
IEEE Power & Energy Magazine - November/December 2020 - 42
IEEE Power & Energy Magazine - November/December 2020 - 43
IEEE Power & Energy Magazine - November/December 2020 - 44
IEEE Power & Energy Magazine - November/December 2020 - 45
IEEE Power & Energy Magazine - November/December 2020 - 46
IEEE Power & Energy Magazine - November/December 2020 - 47
IEEE Power & Energy Magazine - November/December 2020 - 48
IEEE Power & Energy Magazine - November/December 2020 - 49
IEEE Power & Energy Magazine - November/December 2020 - 50
IEEE Power & Energy Magazine - November/December 2020 - 51
IEEE Power & Energy Magazine - November/December 2020 - 52
IEEE Power & Energy Magazine - November/December 2020 - 53
IEEE Power & Energy Magazine - November/December 2020 - 54
IEEE Power & Energy Magazine - November/December 2020 - 55
IEEE Power & Energy Magazine - November/December 2020 - 56
IEEE Power & Energy Magazine - November/December 2020 - 57
IEEE Power & Energy Magazine - November/December 2020 - 58
IEEE Power & Energy Magazine - November/December 2020 - 59
IEEE Power & Energy Magazine - November/December 2020 - 60
IEEE Power & Energy Magazine - November/December 2020 - 61
IEEE Power & Energy Magazine - November/December 2020 - 62
IEEE Power & Energy Magazine - November/December 2020 - 63
IEEE Power & Energy Magazine - November/December 2020 - 64
IEEE Power & Energy Magazine - November/December 2020 - 65
IEEE Power & Energy Magazine - November/December 2020 - 66
IEEE Power & Energy Magazine - November/December 2020 - 67
IEEE Power & Energy Magazine - November/December 2020 - 68
IEEE Power & Energy Magazine - November/December 2020 - 69
IEEE Power & Energy Magazine - November/December 2020 - 70
IEEE Power & Energy Magazine - November/December 2020 - 71
IEEE Power & Energy Magazine - November/December 2020 - 72
IEEE Power & Energy Magazine - November/December 2020 - 73
IEEE Power & Energy Magazine - November/December 2020 - 74
IEEE Power & Energy Magazine - November/December 2020 - 75
IEEE Power & Energy Magazine - November/December 2020 - 76
IEEE Power & Energy Magazine - November/December 2020 - 77
IEEE Power & Energy Magazine - November/December 2020 - 78
IEEE Power & Energy Magazine - November/December 2020 - 79
IEEE Power & Energy Magazine - November/December 2020 - 80
IEEE Power & Energy Magazine - November/December 2020 - 81
IEEE Power & Energy Magazine - November/December 2020 - 82
IEEE Power & Energy Magazine - November/December 2020 - 83
IEEE Power & Energy Magazine - November/December 2020 - 84
IEEE Power & Energy Magazine - November/December 2020 - 85
IEEE Power & Energy Magazine - November/December 2020 - 86
IEEE Power & Energy Magazine - November/December 2020 - 87
IEEE Power & Energy Magazine - November/December 2020 - 88
IEEE Power & Energy Magazine - November/December 2020 - 89
IEEE Power & Energy Magazine - November/December 2020 - 90
IEEE Power & Energy Magazine - November/December 2020 - 91
IEEE Power & Energy Magazine - November/December 2020 - 92
IEEE Power & Energy Magazine - November/December 2020 - 93
IEEE Power & Energy Magazine - November/December 2020 - 94
IEEE Power & Energy Magazine - November/December 2020 - 95
IEEE Power & Energy Magazine - November/December 2020 - 96
IEEE Power & Energy Magazine - November/December 2020 - 97
IEEE Power & Energy Magazine - November/December 2020 - 98
IEEE Power & Energy Magazine - November/December 2020 - 99
IEEE Power & Energy Magazine - November/December 2020 - 100
IEEE Power & Energy Magazine - November/December 2020 - 101
IEEE Power & Energy Magazine - November/December 2020 - 102
IEEE Power & Energy Magazine - November/December 2020 - 103
IEEE Power & Energy Magazine - November/December 2020 - 104
IEEE Power & Energy Magazine - November/December 2020 - 105
IEEE Power & Energy Magazine - November/December 2020 - 106
IEEE Power & Energy Magazine - November/December 2020 - 107
IEEE Power & Energy Magazine - November/December 2020 - 108
IEEE Power & Energy Magazine - November/December 2020 - 109
IEEE Power & Energy Magazine - November/December 2020 - 110
IEEE Power & Energy Magazine - November/December 2020 - 111
IEEE Power & Energy Magazine - November/December 2020 - 112
IEEE Power & Energy Magazine - November/December 2020 - Cover3
IEEE Power & Energy Magazine - November/December 2020 - Cover4
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091020
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070820
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050620
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030420
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010220
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111219
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091019
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070819
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050619
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030419
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010219
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111218
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091018
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070818
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050618
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030418
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010218
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111217
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091017
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070817
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050617
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030417
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010217
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111216
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091016
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070816
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050616
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030416
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010216
https://www.nxtbook.com/nxtbooks/ieee/powerenergy_010216
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111215
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091015
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070815
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050615
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030415
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010215
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111214
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091014
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070814
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050614
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030414
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010214
https://www.nxtbookmedia.com