Related Manuals for Satec expertmeter PM180
Summary of Contents for Satec expertmeter PM180
- Page 1 expertmeter™ High Performance Analyzer PM180 Fault Locator Application Note BB0165 Rev. A2...
- Page 2 IMPORTANT NOTICE For accurate fault location, the PM180 must be calibrated under version 31.XX.19 or higher. REVISION HISTORY Aug 2015 Initial release June 2016 Add Two-ended fault location support...
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Page 3: Table Of Contents
Table of Contents 1 GENERAL......................4 Fault Locator Functionality ....................4 Off-line Fault Location ......................4 Single-ended Fault Location ....................4 Two-ended Fault Location ..................... 4 Transformer Inaccuracies ...................... 5 2 CONFIGURING THE DEVICE ................6 Configuring the Fault Locator ....................6 2.1.1 General Parameters .......................... -
Page 4: General
1 General 1.1 Fault Locator Functionality The PM180 onboard fault locator provides distance to fault information in real-time. It operates on fault events detected and recorded by the PM180 digital fault recorder immediately as events happen. The fault locator uses impedance-based fault location methods. Distance calculations are based on voltage and current waveforms recorded by the device in response to a detected fault event, and line impedance parameters provided by the user. -
Page 5: Transformer Inaccuracies
1.5 Transformer Inaccuracies The time skew of voltage and current signals contribute large into inaccuracy of distance calculations. This especially concerns customer instrument transformers that may introduce significant phase errors. To minimize the effect of the transformer inaccuracies, follow the instructions below: 1. -
Page 6: Configuring The Device
2 Configuring the Device 2.1 Configuring the Fault Locator 2.1.1 General Parameters To configure the fault locator: 1. Select Fault Locator Setup from the Meter Setup menu. 2. Select desired options. 3. For two-ended fault location, specify the network address and port of the remote device located at the opposite side of a power line. - Page 7 5. Check the “Correction Enabled” box if you want your local transformer correction data to be applied. 6. Click Save as… to store your setup in the device site database, and click Send to send the setup to the device. See the following table for available options.
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Page 8: Power Line Impedance
Parameter Options Default Description Voltage transformer The number of correction points correction, ranges -> Setup within the transformer’s voltage rating. Click Setup on the right to configure transformer ratio correction factors and phase angle errors. NOTE: To select the preferred distance units (km/mile), click on Tools at the menu bar, select Options/Preferences and then check the desired distance units. -
Page 9: Transformer Correction
1. Click Setup on the right of the Transformer Parameters row. 2. Specify the transformer rated power and percent impedance. 3. Click OK to apply your new setup. 2.1.4 Transformer Correction Generally, the PM180 provides a common transformer correction setup option that is used for compensation of instrument transformer ratio and phase angle errors in all device measurements (see MeterSetup/General Setup/Transformer Correction in PAS). -
Page 10: Configuring The Fault Recorder
2.2 Configuring the Fault Recorder Before operating the fault locator, configure the device fault recorder and files you will use for recording fault waveforms and distance calculation results. For more information, see “Configuring the Fault Recorder” in the PM180 Operation Manual. For proper operation of the fault locator: 1. - Page 11 Refer to the table in the following section for explanation of the distance to fault parameters.
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Page 12: Operating The Onboard Fault Locator
3 Operating the Onboard Fault Locator 3.1 Fault Locator Operation When fault locator operation is enabled, the fault recorder automatically launches the fault locator as a fault is detected. It may take a short time while the voltage and current waveforms are completely recorded to the waveform log file and distance calculation results are updated and recorded to the device data log. -
Page 13: Getting Recorded Data
See the following table for explanation of the fault distance parameters. Name Description Value FltTm Fault time FltTmmcs Fault time, fractional seconds in µs FltLoop Fault loop type Und = undefined loop AG = phase A to ground BG = phase B to ground CG = phase C to ground AB = phase A to phase B BC = phase B to phase C... - Page 14 4. Click “Select Logs” and check the fault log box, and the boxes for the data and waveform log files you selected for recording fault waveforms and distance calculations results in the Fault Recorder setup. To view the recorded fault distance data, select Open… in the File menu, point to the database with the uploaded data and double click on the data log table on the right pane.
- Page 15 See “Viewing the Data Log” in the PM180 Operation Manual for more information on data viewing options.
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Page 16: Using The Off-Line Fault Locator
4 Using the Off-line Fault Locator 4.1 Single-ended Fault Location For off-line single-ended fault location: 1. Retrieve the fault waveform log file from your device as shown in section “Getting Recorded Data” above. 2. Select Open… in the File menu, point to the database with the uploaded data and double click on the waveform log table on the right pane. -
Page 18: Two-Ended Fault Location
4.2 Two-ended Fault Location For two-ended fault location: 1. Retrieve the fault waveform log files from both devices located on two sides of the power line as shown in section “Getting Recorded Data” above. Put both databases with the retrieved data to the same folder. 2.
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