Guidebook for Detecting and Mitigating Low-Level DC Leakage and Fault Currents in Transit Systems (2020) / Chapter Skim
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Pages 8-14
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From page 8... ...
8 RF Emission-Based Sensors RF emissions from the power network relate the condition of the network to the frequency content of those emissions. Figure 6 provides the block diagram of the RF emission-based sensor.
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RF Emission-Based Sensors 9 data that indicates the deterioration of the DC electrical system and opportunities for predictive maintenance to avoid electrical outages. 3.3 Data Security Data is uploaded to the Exacter Cloud for geospatial analysis and is encrypted using the North American Electric Reliability Corporation Critical Infrastructure Protection plan (NERC CIP)
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10 Guidebook for Detecting and Mitigating Low-Level DC Leakage and Fault Currents in Transit Systems 3.4 Sensor Location The sensors are in the attendant compartment of the lead train engine. Figure 8 shows the prototype installation of two sensors and associated DC to DC isolation and protection equipment.
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RF Emission-Based Sensors 11 Figure 9. Antenna systems.
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12 Guidebook for Detecting and Mitigating Low-Level DC Leakage and Fault Currents in Transit Systems Figure 10. RF emission-based sensor specifications.
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RF Emission-Based Sensors 13 Figure 11. Computer dashboard.
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14 Guidebook for Detecting and Mitigating Low-Level DC Leakage and Fault Currents in Transit Systems Figure 13. Failure Signature black and red event markers.
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