SIGRA_MANUAL_B1_EN.pdf

Lines are assumed to have a high degree of symmetry

  • No School
  • AA 1
  • 154

This preview shows page 135 - 139 out of 154 pages.

tab. Lines are assumed to have a high degree of symmetry around the central phase, in partic- ular the single-plane layout. Figure 5-20 shows 2 tower systems with different phase arrangements. The + signs indicate the phases. In both arrangements, phase L2 is the central phase. Twisted lines can be simulated by entering several line sections with different central phases.
Image of page 135

Subscribe to view the full document.

Views / Diagrams / Signals / Tables 5.15 Fault Locator 136 SIPROTEC, SIGRA, Manual E50417-H1176-C070-B1, Edition 06.2017 Figure 5-20 Different Options for a Single-Plane Layout with a Central Phase 5.15.2 Using the Fault Locator In order to determine the fault location, set the related parameters first. Proceed as follows: Load a fault record. Regarding a two-ended fault location, import a second fault record (for example by drag and drop). Select Options > Network Configuration > Fault Locator (Figure 5-19). Set the line-section data and options for fault location. Regarding the two-ended fault location, select the network node via Network Node at Opposite Line End . Select the Signal Assignment tab and set the parameters. Confirm the setting with OK . Select View > Fault Locator or click the Fault Locator icon to start the fault-location function. If the calculation is carried out correctly, you can save the network configuration for future use. Next time when a fault record is received from the same devices, the right configuration can then be selected automatically. L1 L2 L3 L1 L2 L3 NOTE The fault records are synchronized automatically due to the two-ended fault locator.
Image of page 136
Views / Diagrams / Signals / Tables 5.15 Fault Locator 137 SIPROTEC, SIGRA, Manual E50417-H1176-C070-B1, Edition 06.2017 Reminder for Setting Parameters Regarding a fault record which has been configured and saved in SIGRA before, you can directly start the pro- cedure when you load it next time. Regarding a fault record which is first time opened in SIGRA or opened but not saved, if you start the procedure without setting the relative parameters, SIGRA will automatically switch to the Fault Locator tab, and a dialog pops up to remind you about parameter setting. After setting parameters, you must restart the procedure to get the fault-location result. Activate the check box in case no further reminder needed. Figure 5-21 Reminder for Setting Parameters in the Signal Assignment Tab and Fault Locator Tab If the transformer data in the Signal Assignment tab is improper, when you start the procedure, SIGRA will automatically switch to the Signal Assignment tab, and a dialog pops up to remind you to update parameters first. After setting parameters, you must restart the procedure to get the fault-location result. The reminder pops up only once for each record.
Image of page 137

Subscribe to view the full document.

Views / Diagrams / Signals / Tables 5.15 Fault Locator 138 SIPROTEC, SIGRA, Manual E50417-H1176-C070-B1, Edition 06.2017 Figure 5-22 Reminder for Setting Parameters for Transformer and Line Data Use the Range between Two Cursors If you activate the check box Use the range between two cursors , remember to position the 2 cursors to se- lect a range of records before you start the fault-location function.
Image of page 138
Image of page 139
  • Fall '19
  • Sigra

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern