1 00:00:19,293 --> 00:00:21,301 AMT AR Room 2 00:00:21,302 --> 00:00:27,875 Various studies have shown that around 70 to 90 percent of the faults in overhead power lines are transient. 3 00:00:27,900 --> 00:00:30,361 At lower-level voltages such as distribution, 4 00:00:30,386 --> 00:00:38,881 there are fewer and about 80 percent transient faults while in higher-level voltages such as transmission, this value is about 90 percent. 5 00:00:38,906 --> 00:00:42,273 Thunder is one of the most common reasons for a fault to occur. 6 00:00:42,298 --> 00:00:49,695 The swinging of the wires or short-circuit of the grid with sundry objects is another cause for the occurrence of transient faults. 7 00:00:49,720 --> 00:00:57,632 Most faults can be solved by correctly using the trip process or reconnection so that the grid disconnection time reaches a minimum. 8 00:00:57,657 --> 00:01:03,539 To test any type of reclosers, its exclusive room which is AMT AR can be used. 9 00:01:03,564 --> 00:01:12,710 The main window of this room is Instrument AR. Also, it is possible to access other windows from the View menu or the bar on the right side of this page. 10 00:01:12,735 --> 00:01:14,218 To begin the test, first, 11 00:01:14,243 --> 00:01:20,250 the user needs to insert the functions that need the reconnection process to be examined for them into the Data Table. 12 00:01:20,275 --> 00:01:26,171 Therefore, it is possible to examine and assess the action or inaction of the AR for different functions. 13 00:01:26,196 --> 00:01:32,826 By clicking on “Add Cycle”, the next rows are added so that the reconnection is examined after the selected functions. 14 00:01:32,865 --> 00:01:35,037 After selecting the title of the function, 15 00:01:35,062 --> 00:01:42,068 the user only needs to enter the performance characteristic and its settings for the delay and instantaneous units. 16 00:01:42,093 --> 00:01:50,764 After that, the amount of the injected current and the fault angle are entered so that the time duration for different states is determined in accordance with the selected Curve. 17 00:01:50,789 --> 00:01:56,553 Dead Time and Reclaim Time are two other options that are used to speed up making the states. 18 00:01:56,585 --> 00:02:06,232 Finally, in the Expected section, the user needs to specify their expectation from the success or failure of the recloser after the action of the specified function. 19 00:02:06,257 --> 00:02:14,428 In the next step, the user needs to specify the necessary Binary Inputs and Binary Outputs in accordance with the elements required for the recloser test. 20 00:02:14,453 --> 00:02:21,584 It should be noted that for the convenience of the users, the important signals are available in the drop-down list by default. 21 00:02:21,609 --> 00:02:24,959 In this section, by selecting Add Row and Delete Row options, 22 00:02:24,984 --> 00:02:29,295 it is possible to add a row to add the binaries and delete the selected row, respectively. 23 00:02:29,320 --> 00:02:33,748 Considering the two types of the reclose test including laboratory testing 24 00:02:33,773 --> 00:02:35,678 and testing in power stations 25 00:02:35,698 --> 00:02:40,333 some of the titles are common between the two lists of inputs and outputs. 26 00:02:40,358 --> 00:02:44,740 After selecting the number of the binary input and signal, 27 00:02:44,765 --> 00:02:51,740 it is possible to specify its influence on the current states including PreFault, Fault, Deadtime and Reclaim time. 28 00:02:51,765 --> 00:02:56,552 In other words, the condition for ending every state is determined by the binary inputs. 29 00:02:56,577 --> 00:03:00,273 In the next step, after selecting the number of the binary output and its signal, 30 00:03:00,298 --> 00:03:03,601 the user only needs to specify its condition for every state. 31 00:03:03,626 --> 00:03:08,944 This is most useful in cases where, for example, signals such as CB Ready or Close and 32 00:03:08,969 --> 00:03:13,421 Open are needed and testing the relay in the laboratory is intended. 33 00:03:13,511 --> 00:03:19,174 After adjusting the settings, by clicking on Init Test option, the states are created. 34 00:03:19,199 --> 00:03:22,241 These states can be viewed from Table View section. 35 00:03:22,266 --> 00:03:28,991 Also, it is possible to compare the different settings and elements of every state with more details in Detail View section. 36 00:03:29,016 --> 00:03:35,147 In this video, the AR function test for the MiCOM P139 relay is going to be performed. 37 00:03:35,172 --> 00:03:40,858 In this test, the recloser function is activated after the occurrence of the earth fault. 38 00:03:40,883 --> 00:03:46,811 To begin, the user needs to go to the settings section of the relay and set the parameters related to the functions. 39 00:03:46,836 --> 00:03:54,569 Here, in the subcategory number one of parameters, function DTOC is assigned to SEF protection. 40 00:03:54,594 --> 00:04:06,882 In IDMT1 section, the protections of OC and EF are of the delay type while in IDMT2 section, the protections of OC and EF are set at the instantaneous type. 41 00:04:06,907 --> 00:04:12,233 Now, by going to the ARC section, the settings related to the auto-recloser are adjusted. 42 00:04:12,258 --> 00:04:26,710 Here, the TDR option refers to recloser with time delay; Dead Time and Reclaim Time are set at 4 and 20 seconds, respectively, but it is also possible to activate the HSR which is the high-speed recloser. 43 00:04:26,735 --> 00:04:28,585 Next, the outputs are configured. 44 00:04:28,610 --> 00:04:34,475 Moreover, in INP section, the inputs needed for the assessment and the test are configured. 45 00:04:34,500 --> 00:04:42,780 By referring to the relay manual, it is possible to view an outline of the behavior of the P131 recloser function. 46 00:04:42,812 --> 00:04:47,397 In certain situations such as cases where there is a manual close, external signal, 47 00:04:47,422 --> 00:04:53,710 ARC function deactivation, and manual trip and protection deactivation, the recloser will be blocked. 48 00:04:53,735 --> 00:04:59,999 It is possible for the user to examine these signals in the AR room of the AMPro software. 49 00:05:00,024 --> 00:05:06,575 The user can begin the test after ensuring that the necessary conditions for the recloser to perform are met; 50 00:05:06,600 --> 00:05:15,483 these conditions include activating the protection, not blocking the ARC function, and being able to open and close the breaker and have the close state of the key. 51 00:05:15,508 --> 00:05:20,021 To adjust the relay wiring, the user can use the connection diagram from the manual. 52 00:05:20,046 --> 00:05:26,037 The user needs to go to the AMT AR room one more time and add the two functions of earth fault and overcurrent. 53 00:05:26,062 --> 00:05:31,264 It should be noted that in the first step, reconnection is tested for the earth fault function. 54 00:05:31,289 --> 00:05:37,076 This step must be passed successfully and receiving the close signal or the connection needs to happen as well. 55 00:05:37,101 --> 00:05:40,548 After specifying the settings related to this function in the first row, 56 00:05:40,573 --> 00:05:45,399 single-phase fault to earth is selected and Dead Time and Reclaim Time values are entered. 57 00:05:45,424 --> 00:05:51,009 Also, in the Expected section, the expectation from the act of reconnection is set at successful. 58 00:05:51,034 --> 00:05:53,524 In the next row, OC function is added. 59 00:05:53,549 --> 00:05:59,501 Similarly, the settings related to the delay and instantaneous stages as well as the fault current value, 60 00:05:59,526 --> 00:06:02,899 fault type, Deadtime value and Reclaim Time value are entered. 61 00:06:02,924 --> 00:06:06,517 In this section, we expect the act of reconnection to be unsuccessful. 62 00:06:06,542 --> 00:06:14,720 Now it is time to configure the input binaries. In this section, connection trip and pulse are selected from the list in this exact order. 63 00:06:14,745 --> 00:06:18,741 Here, trip is selected as the finisher element for the Fault state. 64 00:06:18,766 --> 00:06:25,639 It is also possible to select Close Pulse or Reclosure Successful as the finisher element for the Deadtime state. 65 00:06:25,676 --> 00:06:33,221 This should be noted that the “PreFault” state time is automatically longer than the “Reset Time” or “Reclaim Time”. 66 00:06:33,246 --> 00:06:40,832 In the binary outputs section, three signals of CB Close, CB Open and CB Healthy or AR Ready are added. 67 00:06:40,871 --> 00:06:47,872 Here it is possible to specify the status of every signal for different states ranging from “PreFault” to “Fault”, 68 00:06:47,897 --> 00:06:49,678 Dead Time”, and “Reclaim Time”. 69 00:06:49,703 --> 00:06:53,819 Finally, the “States” are created by clicking on “Init Test” option. 70 00:06:53,851 --> 00:06:58,491 The user can view the created states by opening the Table View window. 71 00:06:58,516 --> 00:07:05,451 After creating the states, it is possible to adjust the necessary settings for the assessment in the “Assessment” section. 72 00:07:05,483 --> 00:07:11,950 Also, after performing the test, it is possible to assess the performance of the recloser for these two functions. 73 00:07:33,767 --> 00:07:40,009 In the end, by clicking on “Add to Report” option, the test result is added to the created report.