1 00:00:27,150 --> 00:00:27,213 “ 2 00:00:27,214 --> 00:00:27,276 “T 3 00:00:27,277 --> 00:00:27,340 “Te 4 00:00:27,341 --> 00:00:27,404 “Tes 5 00:00:27,405 --> 00:00:27,468 “Test 6 00:00:27,469 --> 00:00:27,531 “Test 7 00:00:27,532 --> 00:00:27,595 “Test V 8 00:00:27,596 --> 00:00:27,659 “Test Vi 9 00:00:27,660 --> 00:00:27,723 “Test Vie 10 00:00:27,724 --> 00:00:27,786 “Test View 11 00:00:27,787 --> 00:00:27,850 “Test View” 12 00:00:27,851 --> 00:00:27,914 “Test View” 13 00:00:27,915 --> 00:00:27,978 “Test View” w 14 00:00:27,979 --> 00:00:28,041 “Test View” wi 15 00:00:28,042 --> 00:00:28,105 “Test View” win 16 00:00:28,106 --> 00:00:28,169 “Test View” wind 17 00:00:28,170 --> 00:00:28,233 “Test View” windo 18 00:00:28,234 --> 00:00:28,296 “Test View” window 19 00:00:28,297 --> 00:00:28,360 “Test View” window: 20 00:00:28,361 --> 00:00:28,761 “Test View” window: 21 00:00:28,786 --> 00:00:34,082 As mentioned before, one of the windows of “AMT Diff Harmonic” room is “Test View”. 22 00:00:34,305 --> 00:00:38,007 This window consists of 6 tabs of “Shot Test”, “Check Test”, 23 00:00:38,032 --> 00:00:38,991 “Search Test”, 24 00:00:39,016 --> 00:00:48,485 “Setting”, “Trigger” and “Binary Output” where in addition to performing “Shot”, “Check” and “Search” tests, respectively, some other test settings are managed. 25 00:00:48,510 --> 00:00:48,565 “ 26 00:00:48,566 --> 00:00:48,622 “S 27 00:00:48,623 --> 00:00:48,678 “Sh 28 00:00:48,679 --> 00:00:48,735 “Sho 29 00:00:48,736 --> 00:00:48,791 “Shot 30 00:00:48,792 --> 00:00:48,847 “Shot 31 00:00:48,848 --> 00:00:48,904 “Shot T 32 00:00:48,905 --> 00:00:48,960 “Shot Te 33 00:00:48,961 --> 00:00:49,016 “Shot Tes 34 00:00:49,017 --> 00:00:49,073 “Shot Test 35 00:00:49,074 --> 00:00:49,129 “Shot Test” 36 00:00:49,130 --> 00:00:49,186 “Shot Test” 37 00:00:49,187 --> 00:00:49,242 “Shot Test” t 38 00:00:49,243 --> 00:00:49,298 “Shot Test” ta 39 00:00:49,299 --> 00:00:49,355 “Shot Test” tab 40 00:00:49,356 --> 00:00:49,411 “Shot Test” tab: 41 00:00:49,412 --> 00:00:49,712 “Shot Test” tab: 42 00:00:49,737 --> 00:00:56,512 In this tab, first in “Harmonic Order” field in “Test Point” section, the harmonic level that you wish to test is entered. 43 00:00:56,537 --> 00:01:04,639 Meanwhile, you can see that its characteristic curve is displayed in “Harmonic Restraint View” window . 44 00:01:04,664 --> 00:01:14,927 Differential current and the proportion of the second harmonic current to the differential current are entered in terms of percent in “Idiff” and “Ixf/Idiff” fields respectively. 45 00:01:14,951 --> 00:01:21,558 In “Angle (Ixf/Idiff)” field, it is possible to specify an angle for the harmonic current. 46 00:01:21,582 --> 00:01:33,199 In “Fault Type” section, the fault type is selected from among single-phase to earth and three-phase faults because the transformers are either single-phase or three-phase and only these modes are tested. 47 00:01:33,223 --> 00:01:44,534 In “Details” section, the nominal “Trip” time and the maximum and minimum allowed tolerances are displayed. After performing the test, the relay performance time is displayed in “t act” field. 48 00:01:50,650 --> 00:01:56,951 By selecting “Add” option, the information of this “Shot” is added to the “Shot Test” table along with its details. 49 00:01:56,976 --> 00:02:09,862 The details include test evaluation, differential and harmonic current, test angle, nominal time, performance time, fault value in terms of percent and seconds and the minimum and maximum performance times. 50 00:02:09,886 --> 00:02:16,048 Also, if you wish to add a comment about any of the test points, you can use “User Comment” cell. 51 00:02:16,687 --> 00:02:22,623 Also, at the end of this page, it is possible to select test points table in different “Fault Types”. 52 00:02:22,648 --> 00:02:32,989 By marking one of the rows and selecting “Insert” option, the marked row is repeated in the table and by selecting “Remove option, the marked point is removed. 53 00:02:33,013 --> 00:02:40,763 By selecting “Add to” option, it is possible to copy the point or points selected from one of the “Fault Types” to another “Fault Type”. 54 00:02:40,788 --> 00:02:46,507 By selecting “Remove All” option, all of the test points added to the table are removed. 55 00:02:46,532 --> 00:02:55,485 By clicking on “Sequence” option, “Sequence Test Points to” page opens where it is possible to create test points with the same steps. 56 00:02:55,967 --> 00:03:03,327 By selecting “Angle” in “Step On” field in “Step” section, the angular steps are directly added in terms of degrees. 57 00:03:04,128 --> 00:03:15,114 This means that the test points are specified in accordance with the origin point and in “Origin” section in a way that the required angles are resulted in proportion with the horizon. 58 00:03:15,138 --> 00:03:28,375 For example, if the start and end angles are “45” and “90” degrees respectively with “5” degrees steps and 0.3 and 2 origin points for Idiff and I bias with 0 angle, 59 00:03:28,399 --> 00:03:33,852 by approving this settings you can see that some points are added on the “Harmonic Restraint View”. 60 00:03:33,877 --> 00:03:38,334 For example, the last point is selected; by doing the mentioned calculation, 61 00:03:38,358 --> 00:03:43,646 in the picture you can see that the resulted angle is “85” and not “90” 62 00:03:43,671 --> 00:03:51,130 degrees which is because the “Origin” point is considered as one of the points and the last point of this “Sequence” is removed. 63 00:03:51,154 --> 00:03:53,237 But by selecting “Direction”, 64 00:03:53,261 --> 00:03:57,940 an angle is specified in “Angle” field and in this angle from the “Origin” point, 65 00:03:57,964 --> 00:04:05,739 with the length entered in “Length” field and with the steps specified in “Step Size”, some points are shot on the characteristic curve. 66 00:04:05,763 --> 00:04:10,094 Note that the length and steps of the points are based on nominal current. 67 00:04:10,118 --> 00:04:20,397 For example, if the angle is “45” degrees and the length is “2” and the step is “0.1” times the nominal current and the origin point current and the second harmonic are “0”, 68 00:04:20,421 --> 00:04:27,973 by approving this settings you can see that some points are added to the characteristic curve at the angle of 45 degrees with the origin of “0”. 69 00:04:27,997 --> 00:04:38,426 After removing all of the points by using “Remove All” option and adding three new “Shots” to the table, the test is run and the relay performance is analyzed. 70 00:04:39,346 --> 00:04:44,863 If the performed test has “Failed” points, by selecting “Clear All Failed Tests” option, 71 00:04:45,926 --> 00:04:55,236 the results of these points are “Cleared” from the table and you can test the point again by right-clicking on its row and selecting “Apply Test”. 72 00:04:55,871 --> 00:04:55,915 “ 73 00:04:55,916 --> 00:04:55,959 “C 74 00:04:55,960 --> 00:04:56,004 “Ch 75 00:04:56,005 --> 00:04:56,049 “Che 76 00:04:56,050 --> 00:04:56,093 “Chec 77 00:04:56,094 --> 00:04:56,138 “Check 78 00:04:56,139 --> 00:04:56,183 “Check 79 00:04:56,184 --> 00:04:56,227 “Check T 80 00:04:56,228 --> 00:04:56,272 “Check Te 81 00:04:56,273 --> 00:04:56,316 “Check Tes 82 00:04:56,317 --> 00:04:56,361 “Check Test 83 00:04:56,362 --> 00:04:56,406 “Check Test” 84 00:04:56,407 --> 00:04:56,450 “Check Test” 85 00:04:56,451 --> 00:04:56,495 “Check Test” t 86 00:04:56,496 --> 00:04:56,540 “Check Test” ta 87 00:04:56,541 --> 00:04:56,584 “Check Test” tab 88 00:04:56,585 --> 00:04:56,629 “Check Test” tab: 89 00:04:56,630 --> 00:04:56,990 “Check Test” tab: 90 00:04:57,378 --> 00:05:01,763 After performing the “Shot Test”, “Check Test” and “Search Test” are performed. 91 00:05:01,787 --> 00:05:11,978 In “Check Test” the upper and lower tolerances of the relay, which are displayed as dotted lines in “Harmonic Restraint View”, are tested and evaluated. To perform the “Check Test”, 92 00:05:12,002 --> 00:05:17,046 first it is necessary to draw some lines named “Check Line” in different parts of the vector. 93 00:05:17,070 --> 00:05:24,165 To draw this line, first from “Origin” section in “Check Line” section, the start point of this line is specified. 94 00:05:24,189 --> 00:05:37,466 In “Idiff”, “Ixf/Idiff”, “Angle (Ixf/Idiff)” and “Angle” fields, 1In, 17 percent, 0 degree and 0 degree are entered as origin differential current, 95 00:05:37,490 --> 00:05:46,483 the proportion of the “nth” harmonic current to the differential current, the angle of the “nth” harmonic current and the angle of the “Check Line” respectively. 96 00:05:46,507 --> 00:05:52,751 Also, 5In is entered as the length of the check line in the cell of the “Length” section. 97 00:05:52,775 --> 00:05:57,759 In “Harmonic Order” field, the harmonic level is selected so that its curve is displayed. 98 00:05:57,783 --> 00:06:04,901 Note that the drawn “Check Lines” must have at least one intersection with one of the characteristic curve tolerance lines. 99 00:06:04,925 --> 00:06:10,145 Then click on “Add” option to add the “Check Line” to the “Check Test” lines table. 100 00:06:10,169 --> 00:06:24,453 Another method for drawing the “Check Line” is to hold down left-click and “Ctrl” key on “Harmonic Restraint View” window and then move the cursor in the desired direction on the characteristic curve. 101 00:06:24,478 --> 00:06:38,455 After drawing the “Check Line”, the software evaluates the crossing place of “Check Line” and tolerance lines as “Shot” test in accordance with the performance of the relay. 102 00:06:38,479 --> 00:06:47,654 Here, after performing the test, the relay does not perform in lower tolerance and performs a trip in the upper tolerance so the result of the test is “Pass”. 103 00:06:47,678 --> 00:06:52,959 Other parts of this section such as “Fault Type” and “Remove All” and “Sequence” etc. 104 00:06:52,983 --> 00:07:02,015 options are the same at those of “Shot Test” section which have been explained in previous videos. The only additional option in this section is “Copy to Search”. 105 00:07:02,039 --> 00:07:05,679 By marking any of the test lines and selecting this option, 106 00:07:05,703 --> 00:07:14,429 it is possible to copy the selected line in “Search Test” and by selecting “Add” option in “Search Test”, add this line to the “Search Test” test lines table. 107 00:07:14,453 --> 00:07:14,495 “ 108 00:07:14,496 --> 00:07:14,537 “S 109 00:07:14,538 --> 00:07:14,580 “Se 110 00:07:14,581 --> 00:07:14,622 “Sea 111 00:07:14,623 --> 00:07:14,665 “Sear 112 00:07:14,666 --> 00:07:14,707 “Searc 113 00:07:14,708 --> 00:07:14,750 “Search 114 00:07:14,751 --> 00:07:14,792 “Search 115 00:07:14,793 --> 00:07:14,835 “Search T 116 00:07:14,836 --> 00:07:14,878 “Search Te 117 00:07:14,879 --> 00:07:14,920 “Search Tes 118 00:07:14,921 --> 00:07:14,963 “Search Test 119 00:07:14,964 --> 00:07:15,005 “Search Test” 120 00:07:15,006 --> 00:07:15,048 “Search Test” 121 00:07:15,049 --> 00:07:15,090 “Search Test” t 122 00:07:15,091 --> 00:07:15,133 “Search Test” ta 123 00:07:15,134 --> 00:07:15,175 “Search Test” tab 124 00:07:15,176 --> 00:07:15,218 “Search Test” tab: 125 00:07:15,219 --> 00:07:15,619 “Search Test” tab: 126 00:07:15,643 --> 00:07:22,824 After performing “Shot Test” and “Check Test” in “AMT Diff. Harmonics” room, it is necessary to perform “Search Test”. 127 00:07:22,848 --> 00:07:26,724 The purpose of this test is to find the characteristic curve line. 128 00:07:26,748 --> 00:07:33,033 To perform a “Search Test”, first some lines named “Search Line” should be drawn in different parts of the vector. 129 00:07:33,057 --> 00:07:37,946 The method for drawing these lines is the same as the one explained for “Check Line”. 130 00:07:37,977 --> 00:07:44,315 To draw this line, first the start point of this line is specified in “Search Line” section, “Origin” section. 131 00:07:44,339 --> 00:07:54,473 For example, in “Idiff”, “Ixf/Idiff”, “Angle (Ixf/Idiff)” and “Angle” fields, 1In, 17 percent, 132 00:07:54,497 --> 00:08:08,322 0 degree and 0 degree are entered as origin differential current, the proportion of the “nth” harmonic current to the differential current, the angle of the “nth” harmonic current and the angle of the “Search Line” respectively. 133 00:08:08,346 --> 00:08:14,480 Also, 6In is entered as the length of the check line in the cell of the “Length” section. 134 00:08:14,504 --> 00:08:19,429 In “Harmonic Order” field, the harmonic level is selected so that its curve is displayed. 135 00:08:19,454 --> 00:08:24,475 Then click on “Add” option to add the “Search Line” to the “Search Test” test lines table. 136 00:08:24,500 --> 00:08:35,019 After drawing the “Search Line”, the software tests the intersection location of the “Search Line” and tolerance lines as “Shot” and evaluates them based on the relay performance. 137 00:08:35,044 --> 00:08:44,738 Upon running the test, by testing some points on the search line the software starts interpolating the characteristic curve and determines its exact location. 138 00:08:44,762 --> 00:08:52,280 “Ignore” field in “Search Interval” section is used when you want the intended “Search” line to ignore the specified characteristic curve. 139 00:08:52,305 --> 00:08:59,158 By entering a number in this section, some points are added on the “Search” line with this number as the distance between them. 140 00:08:59,183 --> 00:09:08,632 For example, by specifying “2In” in this field, you can see that some points are added on the “Search Line” with “2In” distance from each other. 141 00:09:08,657 --> 00:09:13,946 By clicking on “Add” option, this “Search Line” is added to the “Search Test” lines table. 142 00:09:13,971 --> 00:09:24,365 If the test runs, the points added on the “Search Test” are tested one after the other until the exact location of the relay characteristic curve is determined. 143 00:09:24,389 --> 00:09:31,130 This option is used when there is no characteristic to test or the characteristic that you have seems wrong. 144 00:09:31,155 --> 00:09:39,477 If you wish to do the same for all of the tested lines, you can use “Setting” tab in “Ignore Nominal Characteristic” section. 145 00:09:39,509 --> 00:09:45,907 To do this, by entering the value in “Search Interval” and selecting “Apply to All” option, 146 00:09:45,932 --> 00:09:50,590 you can apply this setting to all test lines and find the relay characteristic.