Need to solve HW#6 Milestone#2 only. Milestone#1 solution is attached along with this question. Rest of the materials are also attached here.
Do Milestone 2 of
HW06 Milestones.pdf
Download HW06 Milestones.pdf
protection and coordination study. Model
DISTRIBUTION Feeder HW06.olr
Download DISTRIBUTION Feeder HW06.olr
Coordination Table
HW06 Coord Summary.xlsx
Download HW06 Coord Summary.xlsx
and PS50 Criteria
PS-50 Distribution Feeder Protection excerpt.pdf
Also professor has generously shared
Fuse and recloser references.OLR
Aspen username: sa5t6Password: Legendkiller!123
Deadline is Sunday (3/26/23)
HW06 with Milestones EE6560 Power System Protection 1 Do 12.47kV distribution protection and coordination. The HW06 ASPEN model, coordination summary table, and an excerpt from Ameren PS-50 are on Canvas as your starting point. The model already has the network model, a Recloser with settings, Grocer customer 480V breaker settings, and Ameren 14G standard 12.47kV feeder device 51 and 51N settings. You are allowed to change the 12kV 51 and 51N settings and the Recloser type & size (recloser ASPEN index posted too) though you must explain your reasoning. 1. Milestone 1: 2. Please specify fuses at Point M, Grocer high side (HS), and Point P. Refer to completed coordination table and TCC to explain. (30 points) 3. Provide PDF of Time-Current Curves (TCC) for (30 points) a. Grocer transformer damage curve, fuse, and LS breaker settings b. Recloser, Point P fuse coordination c. Feeder phase relay, Recloser, Point M fuse, and Grocer fuse 4. Simulate the required faults and complete the coordination table for the fuses (20 points) 5. Milestone 2: 6. Make any changes based on my Milestone 1 grading comments, then 7. Choose the 34.5/12.47kV substation main breaker device 51 and 51N types, CT ratio, and specify settings. Refer to completed coordination table and TCC to explain. (50 points) 8. Simulate the required faults and complete the coordination table; (you may need separate phase and ground coordination tables.) (40 points) 9. Provide PDF of Time-Current Curves (TCC) for (30 points) a. Feeder phase protection b. Feeder ground protection 10. Criteria: a. In general our minimum Detection Margin = 1.5 (with 2 preferred), and minimum Load Margin is 1.15, and substation relay minimum Coordinating Time Interval (CTI) = 0.3 seconds. i. For fuse "pickup" or "Minimum To Operate (MTO)" use twice nominal amps (e.g. a 50T fuse has 100 amp MTO) ii. For fuse Load Margin generally use 1.5 nominal amps (e.g. a 50T fuse can be loaded 75A continuously) iii. Reclosers generally can be loaded to 125% of coil for 8 hours (e.g. a 100A recloser can be loaded to 125A) b. PS-50 provides feeder protection and coordination criteria. c. Strive to minimize total clearing times. Paul Nauert 3/6/2023 Split into Milestones 3/8/2023 Page 1 of 15 HW06 EE6560 Power System Protection 1 - Solution Do 12.47kV distribution protection and coordination. The HW06 ASPEN model, coordination summary table, and an excerpt from Ameren PS-50 are on Canvas as your starting point. The model already has the network model, a Recloser with settings, Grocer customer 480V breaker settings, and Ameren 14G standard 12.47kV feeder device 51 and 51N settings. You are allowed to change the 12kV 51 and 51N settings and the Recloser type & size (recloser ASPEN index posted too) though you must explain your reasoning. 1. Milestone 1: 2. Please specify fuses at Point M, Grocer high side (HS), and Point P. Refer to completed coordination table and TCC to explain. (30 points) 3. Provide PDF of Time-Current Curves (TCC) for (30 points) a. Grocer transformer damage curve, fuse, and LS breaker settings b. Recloser, Point P fuse coordination c. Feeder phase relay, Recloser, Point M fuse, and Grocer fuse 4. Simulate the required faults and complete the coordination table for the fuses (20 points) 5. Milestone 2: 6. Make any changes based on my Milestone 1 grading comments, then 7. Choose the 34.5/12.47kV substation main breaker device 51 and 51N types, CT ratio, and specify settings. Refer to completed coordination table and TCC to explain. (50 points) 8. Simulate the required faults and complete the coordination table; (you may need separate phase and ground coordination tables.) (40 points) 9. Provide PDF of Time-Current Curves (TCC) for (30 points) a. Feeder phase protection b. Feeder ground protection 10. Criteria: a. In general our minimum Detection Margin = 1.5 (with 2 preferred), and minimum Load Margin is 1.15, and substation relay minimum Coordinating Time Interval (CTI) = 0.3 seconds. i. For fuse "pickup" or "Minimum To Operate (MTO)" use twice nominal amps (e.g. a 50T fuse has 100 amp MTO) ii. For fuse Load Margin generally use 1.5 nominal amps (e.g. a 50T fuse can be loaded 75A continuously) iii. Reclosers generally can be loaded to 125% of coil for 8 hours (e.g. a 100A recloser can be loaded to 125A) b. PS-50 provides feeder protection and coordination criteria. c. Strive to minimize total clearing times. Page 2 of 15 Paul Nauert 3/6/2023 Split into Milestones 3/8/2023 Page 3 of 15 Acceptable alternates are 140T at Point M, and 65T at Point P. They are more 'standard' and accommodate more load growth. Page 4 of 15 Point P fuse coordination: Page 5 of 15 Original 140 V4L 2A2D Page 6 of 15 Although recloser V4D 140 2A2D is nominally only 4% above peak load, but Eaton /Cooper lists 125% of coil for 8 hrs so it provides the best detection margin (DM) and then has Load Margin (LM)=1.30; as seen below V4D 200 4D while meeting DM would cause 51N CO-8 time dial too long at 4*1.68+0.1 = 6.8s. Richard also pointed out that if overloaded trip timing is not guaranteed. Retain V4D 140 Page 7 of 15 Retain V4D 140 Page 8 of 15 Alternate is 65T at Point P Page 9 of 15 Point M to Velda fuse alternatives: 100T provides better DM, meets LM, and coordinates with revised 51N to 480A MTO; or 140T meets DM & LM, allows for more growth and larger downstream devices but forces 51N back to 600A MTO with DM=1.77 OK but below Preferred DM. PJN prefers 100T and the 51N MTO=480 Page 10 of 15 Grocer 1500kVA xfmr Page 11 of 15 SLG below Page 12 of 15 Using shift factor =(0.48/12.47)(2/SQRT3) to account for one phase of HS seeing more current for LS Ph-Ph, also Cooper and Chance 80T compared as HS fuse Page 13 of 15 Grocer fuses that do NOT coordinate: Page 14 of 15 Page 15 of 15 Fuse does not meet xfmr damage curve Seth and Jon, p. 1 ASPEN VM Access 2023 Spring EE6560 Accessing the Virtual Machines for EE 6560 or 6570 NOTE: It is extremely important that if you use EE ASPEN OneLiner on a VM, you must backup the project before you log out. The VM pool is configured as "Not Persistent" which means that as soon as you log off, the VM is refreshed and all data stored on it (including the FT View project you just closed) is lost. Accessing the VMs outside of 105/106 EECH: 1. If the OpenVPN client is not installed on your computer, instructions to set up the VPN are located at https://it.mst.edu/services/vpn/ Start the OpenVPN Connect client from the system tray, or from the Start menu, Start OpenVPN Connect OpenVPN Connect 2. If this is the first time you are accessing the VM pool from your personal PC, download the VMWare Horizon Client. a. With browser, go to https://view.mst.edu Click on “Horizon Client for Windows” This will take you to theVmware website In the upper left part of the window, make sure the selected version is 4.0 Click on “Go to Downloads” next to the appropriate client. In the upper left part of the window, make sure the selected version is 4.5.0 Click on the “Download” button to download the exe file. Run the exe file to start the install After the install, you will need to restart your PC. 3. Start the VMware Horizon client (should be a shortcut on the desktop). Or, Start Button -> VMWare Horizon Client 4. Double-click on "view.mst.edu" icon. If you do not see a “View.mst.edu” icon in the screen, Double-click on Add Server Type “view.mst.edu” in the box and then click on Connect 5. Log in using your S&T credentials (make sure UM-AD is selected for the domain). 6. You should see the list of VMs that you are entitled on. Double-click the pool you want (you should only see one – EE-VDI). 7. Eventually, you should be connected. If a "Sharing” prompt appears, click on Allow. Any USB devices plugged into your PC will also be discovered. 8. If the computer screen is completely black, then explorer.exe (to display the desktop) never started. To show the desktop: Click on the “Send Ctrl-Alt-Del” in the VM toolbar at the top of the screen. Start Task manager. Click on “More details” If the tasks are not displayed. Select the “File” tab and “Run new task” Type “explorer.exe” in the box and click on “OK” https://it.mst.edu/services/vpn/ https://view.mst.edu/ p. 2 ASPEN VM Access 2023 Spring EE6560 9. There are ten VMs in the pool and once all ten VMs have been logged into, any additional login requests will be denied with a message saying there are no desktops available. If this happens, please let me know and I will request additional VMs in the pool. Accessing the VMs in 105/106 EECH: 1. Start the VMWare View Horizon Client Start Button -> VMWare -> VMWare Horizon Client 2. Same directions as above, starting with step 5 VM Drives 1. The S: drive is general network storage tied to your user account. It is mapped to whichever VM you are logged into and should be used to store your ASPEN projects. When finished, you can transfer it to your flash drive. Access to the flash drive is somewhat slower than the S: drive. So, if you work with your project on a flash drive from the programming software, it will work quite a bit slower. 2. If you are not in 105/106 EECH, any flash drives plugged into the local machine should also be available. If not, click on “Connect USB Device” on the top of the screen. Select the flash drive, if not “checked” already. It will connect to it and install its driver as needed. Access to the programming Software Icons for the programming software (EE ASPEN OneLiner, and others) are on the desktop. You can also Access from the start menu. OneLiner icon Printing Your Programs from the VM To print your documents to the computer attached to your personal PC, print to the “Microsoft XPS Document Writer” printer. It should be the default printer. You will be prompted for a file name (with .xps extension). Save the file on you S: drive. While on the VM, log into your Gmail (or Outlook Live) account. E-mail yourself and attach the .xps file. Minimize the VM desktop window and then from your home PC, log into your Gmail (or Outlook Live) account and retrieve your .xps file. a. If you have Vista or Win7/8, open the XPS file and then print it b. If you do not have Vista or Win7/8 you will need to download the XPS viewer (part of the Microsoft XML Paper Specification Essentials Pack). The link to the download page is: http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=11816 Install it (will need to restart you PC). And use it to open the XPS file and then print it to your printer. Logging Off When finished, with your VM session, click on the “Logoff” icon on the desktop. http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=11816 p. 3 ASPEN VM Access 2023 Spring EE6560 How to Determine Which VM You are Logged Into Click on the windows icon in the lower left corner of the window. Right-click on "Computer" and select "Properties". The name