1 / 8

Fault Level Monitor

Fault Level Monitor. Ken Lennon LCNF Conference 25 th October 2012. Scope of Presentation. Process of product development and the need for fault level visibility Basic principles behind the Fault Level Monitor (FLM) Fault level monitor trial results.

britanni-hoover
Download Presentation

Fault Level Monitor

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Fault Level Monitor Ken Lennon LCNF Conference 25th October 2012

  2. Scope of Presentation • Process of product development and the need for fault level visibility • Basic principles behind the Fault Level Monitor (FLM) • Fault level monitor trial results

  3. So why is there a need for measured fault level visibility? • Evolutionary change in system generation and load (Smart Grids - LCN). • DNO’s have a duty to manage network fault levels, system stability and power quality. • Becoming more difficult to programme computer models accurately to predict fault levels . • SPEN’s proactive approach to the issue • Identified fault level monitor requirements • Approached Outram Research Ltd & Led development of FLM product • Provided data, computer model analysis for product development and feedback • Help pioneer the product and completed field evaluation

  4. Basic principles

  5. Basic principles Upstream Events Downstream Events E.g. Transformer Tap Changer taps down • Voltage & Current Dips at • the FLM position • FLM measures Motor Response and calculates down stream Motor Contribution E.g. Downstream Load changes • Current Rises and the • Voltage Dips • FLM measures Source Response and calculates Upstream Source Impedance

  6. Basic principles 10mS Pk 90mS RMS

  7. Real World Trial Results Two FLM’s were installed at a Primary substation. The substation feeds a 6.3kV customervia two 6.3kV feeder cables. FLM’s were installed at the metering position as shown in the photograph. The fault level results obtained were very promising.

  8. Real World Trial Results Customer Feeder 1 Customer Feeder 2 25.6kA 26.7kA *Model Result 10mS Peak = 26.1 kA 13.2kA 12.9kA *Model Result 90mS RMS = 12.9 kA

More Related