1 00:00:23,701 --> 00:00:23,764 T 2 00:00:23,765 --> 00:00:23,829 Tr 3 00:00:23,830 --> 00:00:23,893 Tra 4 00:00:23,894 --> 00:00:23,957 Trac 5 00:00:23,958 --> 00:00:24,022 Track 6 00:00:24,023 --> 00:00:24,086 Tracki 7 00:00:24,087 --> 00:00:24,151 Trackin 8 00:00:24,152 --> 00:00:24,215 Tracking 9 00:00:24,216 --> 00:00:24,280 Tracking 10 00:00:24,281 --> 00:00:24,344 Tracking s 11 00:00:24,345 --> 00:00:24,409 Tracking st 12 00:00:24,410 --> 00:00:24,473 Tracking sta 13 00:00:24,474 --> 00:00:24,538 Tracking stat 14 00:00:24,539 --> 00:00:24,602 Tracking state 15 00:00:24,603 --> 00:00:25,003 Tracking state 16 00:00:25,028 --> 00:00:30,856 In "State Type: Tracking", power swing test or "Power Swing Blocking" of distance relays is done. 17 00:00:30,928 --> 00:00:36,589 Power swing protection or "Power Swing Blocking" is performed at the level of power transmission network. 18 00:00:36,614 --> 00:00:41,665 In order to conduct "Power Swing Blocking" test, after selecting "State Type: Tracking", 19 00:00:41,697 --> 00:00:48,661 the "Impedance View" window should be opened to display the impedance characteristic of relay, because in vebko software, 20 00:00:48,686 --> 00:00:52,005 this test is conducted by impedance characteristic. 21 00:00:52,187 --> 00:01:03,787 The power swing blocking test is usually conducted in three-phase fault and "Z-I const." mode. That is why in "Fault Type" field, the fault type has been selected to be "L1-L2-L3" by default. 22 00:01:03,827 --> 00:01:09,983 In "Z-I const." mode, the test current is constant and different voltages are generated to create fault impedance. 23 00:01:10,008 --> 00:01:14,339 Analog Output Channels" table data have been created based on this "Set mode". 24 00:01:14,364 --> 00:01:21,388 The values of voltage and output current from these data are calculated by software and displayed in "Table View" and adjusted by the device. 25 00:01:21,413 --> 00:01:29,411 It should be noted that in "State Type: Tracking" state, the "Ananlog Output Channel" table is "Read Only" and no value can be changed to the table. 26 00:01:29,744 --> 00:01:29,841 E 27 00:01:29,842 --> 00:01:29,940 En 28 00:01:29,941 --> 00:01:30,039 Ent 29 00:01:30,040 --> 00:01:30,138 Ente 30 00:01:30,139 --> 00:01:30,237 Enter 31 00:01:30,238 --> 00:01:30,335 Enteri 32 00:01:30,336 --> 00:01:30,434 Enterin 33 00:01:30,435 --> 00:01:30,533 Entering 34 00:01:30,534 --> 00:01:30,632 Entering 35 00:01:30,633 --> 00:01:30,731 Entering r 36 00:01:30,732 --> 00:01:30,829 Entering re 37 00:01:30,830 --> 00:01:30,928 Entering rel 38 00:01:30,929 --> 00:01:31,027 Entering rela 39 00:01:31,028 --> 00:01:31,126 Entering relay 40 00:01:31,127 --> 00:01:31,225 Entering relay 41 00:01:31,226 --> 00:01:31,323 Entering relay d 42 00:01:31,324 --> 00:01:31,422 Entering relay da 43 00:01:31,423 --> 00:01:31,521 Entering relay dat 44 00:01:31,522 --> 00:01:31,620 Entering relay data 45 00:01:31,621 --> 00:01:32,021 Entering relay data 46 00:01:32,045 --> 00:01:40,716 At the beginning of this test, data related to distance relay should be entered into the software so that their impedance characteristic can be displayed in "Impedance View". 47 00:01:40,741 --> 00:01:50,434 To this purpose, click on "Test Object"; by selecting "Import from list" icon, "XRio Converter" file for distance relay "P441" is loaded. 48 00:01:50,537 --> 00:01:59,638 Then in "File" menu, select "Load Relay Setting" option, and in the opened window of "XRio" file, select distance relay "P441". 49 00:01:59,662 --> 00:02:07,939 By unchecking the options in "Matching Algorithm" part, which was previously described, "XRio" file is loaded. 50 00:02:07,978 --> 00:02:15,162 Upon clicking on the "OK" option, the relay impedance characteristic is displayed in the "Impedance View" window. 51 00:02:15,678 --> 00:02:15,745 I 52 00:02:15,746 --> 00:02:15,812 Im 53 00:02:15,813 --> 00:02:15,880 Imp 54 00:02:15,881 --> 00:02:15,948 Impe 55 00:02:15,949 --> 00:02:16,015 Imped 56 00:02:16,016 --> 00:02:16,083 Impeda 57 00:02:16,084 --> 00:02:16,151 Impedan 58 00:02:16,152 --> 00:02:16,218 Impedanc 59 00:02:16,219 --> 00:02:16,286 Impedance 60 00:02:16,287 --> 00:02:16,354 Impedance 61 00:02:16,355 --> 00:02:16,421 Impedance V 62 00:02:16,422 --> 00:02:16,489 Impedance Vi 63 00:02:16,490 --> 00:02:16,557 Impedance Vie 64 00:02:16,558 --> 00:02:16,625 Impedance View 65 00:02:16,626 --> 00:02:16,692 Impedance View 66 00:02:16,693 --> 00:02:16,760 Impedance View w 67 00:02:16,761 --> 00:02:16,828 Impedance View wi 68 00:02:16,829 --> 00:02:16,895 Impedance View win 69 00:02:16,896 --> 00:02:16,963 Impedance View wind 70 00:02:16,964 --> 00:02:17,031 Impedance View windo 71 00:02:17,032 --> 00:02:17,098 Impedance View window 72 00:02:17,099 --> 00:02:17,499 Impedance View window 73 00:02:17,523 --> 00:02:21,601 The power swing blocking test is conducted based on the impedance characteristic. 74 00:02:21,625 --> 00:02:32,159 In this test, the impedance observed by the relay enters the tripping zone from a zone out of the characteristic curve (No Tripping Zone) and exits rapidly; in this case, the relay must "block" its trip. 75 00:02:32,184 --> 00:02:35,902 There is a table next to the impedance characteristic curve in "Impedance View". 76 00:02:35,926 --> 00:02:39,495 This table can be used to enter power swing blocking test data. 77 00:02:39,519 --> 00:02:50,213 In order to conduct this test, one point outside the characteristic curve, one point inside the characteristic curve, and again one point outside the characteristic curve should be added. 78 00:02:50,237 --> 00:02:57,098 After the points are added in the characteristic curve, it is observed that a row has been added to the right table per point. 79 00:02:57,122 --> 00:03:06,473 In the "Num.Step" column of this table, the number of points are entered between the previous point and the selected point and depicted in the impedance characteristic curve. 80 00:03:06,498 --> 00:03:12,486 In "t nom" column, the total time of voltage and current injection corresponding to these points are entered. 81 00:03:12,510 --> 00:03:16,839 In"I test" column, the injection current of these points are determined. 82 00:03:16,863 --> 00:03:23,321 Considering that the injection is in the form of constant current, the current of all points is constant. 83 00:03:23,345 --> 00:03:29,545 The real and imaginary values of the selected point have been entered in "R" and "X" columns, respectively. 84 00:03:29,569 --> 00:03:38,214 Once the table data of this test are completed, this test is ready to be executed and upon clicking "start" option, the test is conducted.