Fault Location in a Distribution Management System (DMS).

Transcription

1 Fault Location in a Distribution Management System (DMS). Research and Demonstrations with openxda Tom Cooke EPRI Project Manager Power Quality Monitoring & Analytics 14 Aug 2013

2 Overview Research and demonstrate open modular components for fault location in a Distribution Management System (DMS). We want to demonstrate openxda as an example module that has the capability and flexibility to implement different forms of fault location. Some utilities use waveform acquisition approach to estimate distance to fault, others use a simple fault magnitude from a relay Other open modular components Use system modeling software for verification for assurance and adjustments (opendss) Validating other approaches (Voltage Drop Method) with opendss as well. Integration with GIS framework (opendss/google-earth type) 2

3 Why have a DMS? System Analysis Unabalanced Power Flow Asset Utilization Fault Detection & Location Grid Efficiency Demand Management GIS OMS SCADA System Outage Distribution Relaibility Unplanned/Planned Trouble Calls Customer Updates Crew Monitor/Assignment Meter Data Data & Communication Interface Relay Data Device Data Network Optimizer FLISR Feeder Reconfiguration Volt/Var Management Network View Model and Interface Accurate Distrubution System Models Switching Operations Contingency Analysis System Protection & Coordination Support of Distributed Generation 3

4 FLISR Operation with DMS (Improve Restoration to Healthy Sections) Fault Location, Isolation and Service Restoration FAULT OCCURS Customer Reports Outage Field Crews On-Scene Fault Located POWER RESTORED TO CUSTOMERS ON HEALTHY SECTIONS OF FEEDER Feeder Back to Normal Travel Time Fault Investigation & Patrol Time Time to Perform Manual Switching Repair Time 5 10 minutes minutes minutes minutes minutes 4

5 Straw-man Integrated DMS Concept for Fault Location Detection and Isolation Coordinate and integrate the utilityowned monitoring data DFR/IED, typical PPC PQ Monitoring, typical PPC Relay, Fault Magnitude/Type, Simple distance to fault Geographic Information System (GIS) for building the static network connectivity model, displays, and electrical model used by the distribution application functions The interface to Outage Management System (OMS) could be used for real time data capture of partial restorations, device status changes, and temporary device additions and deletions (jumpers and line cuts). Additionally Meter Data Management Systems (MDMS) could do the same. 5 Relay Data Meter Data SCADA Stand-Alone/Open Source Fault Location Modules PQView/OpenFLE MDMS Existing DMS OMS GIS Utility Enterprise Integration (CIM) Distribution Circuit Models (CYME, Milsoft, SynerGee, feederall) DERMS Distribution Management System Applications Fault DA VVC DR Efficiency Location Distribution Feeder Models Complete Feeder from the HV sub xfmr, down to LV xfmr. All components such as line capacitor banks, regulators, reclosures/breakers, and service transformers. Three-phase model. Includes feeder laterals, and underground loops; three, two, and single-phase line segments and laterals.

6 Example Waveform Method via PQView 6

7 Example SEL Fault Magnitude Report SEL 2032 Communication Processor Links multiple IEDs Collects event reports from relays. Execute logic searching for fault criteria. 7

8 Theoretical Substitute for SEL 2032 with openxda The SEL-2032 collects, stores, processes and transmits time-stamped sequential event records from Relays and other IEDs. 8

9 Example Supplement with Voltage Drop Method Verification with OpenDSS Distribution System Simulator?????? 9

10 EPRI Knoxville Circuit R5 R4 R3 R2 R1 10

11 Together Shaping the Future of Electricity 11