: Public <<Narrative>> Narrative
Created: 19/09/2018 10:37:12
Modified: 19/09/2018 10:37:12
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Notes: The use-case tackles the possibility of improving the location of faults at the DSO level through better cooperation with the TSO. It is applicable to national contexts in which the TSO-DSO physical interface has a particular configuration with the TSO owning transmission bays connecting (on one end) distribution lines, as represented in the following figure.<br/><a href="file://Z:\local00\home\i09453\Documents\projets\tdx assist\d1.2\integration\Images-TDX_D1_2_BUC11_short_ver2_FaultLocation_PTP\UseCaseImage1.png"><font color="#0000ff"><u>Ctrl+click to see the image</u></font></a> <br/><font color="#00000a"><i>Figure 1 - TSO-DSO physical interface for use-case application.</i></font><br/><i><br/></i>While typical protection system configuration may include a distance protection at both ends of distribution lines, connected, at one end, to a distribution bay and, at the other end, to a transmission bay, not always the information collected is exchanged between TSO and DSO as each of the distance protection is owned independently by each of the system operators.<br/><br/>The access to redundancy of measurements collected by distance protection devices at both ends of distribution lines is a DSO need in order to improve fault location accuracy. By improving fault location accuracy the DSO will be able to optimize its operations, locating faults faster in the field and, consequently, reducing downtimes of distribution lines at the interface with the transmission network.<br/><br/>In this use-case after a fault occurrence in a distribution line, located at the TSO-DSO interface, the TSO exchanges in real-time, through an existing TSO-DSO communication link, fault location data with the DSO. Data exchange, acquired by TSO distance protection devices, includes fault location (impedance), fault type and, eventually, oscillography details as well.<br/>
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Notes: Location of faults at distribution network lines, connected to the interface with the transmission network, by taking advantage of value-added information collected by TSO’s protection devices.<br/>
Object Type Connection Direction Notes
«BUC» Improve fault location close to the TSO-DSO interface BusinessUseCase Dependency From