High-Voltage System EMC
High-voltage power systems present unique electromagnetic compatibility challenges that differ significantly from those encountered in low-voltage electronics. Operating at voltages ranging from tens of kilovolts to over one million volts, these systems generate intense electromagnetic fields, produce corona discharge phenomena, and create transient disturbances that can interfere with nearby electronic equipment and communication systems. Understanding and managing these effects is essential for reliable power delivery and regulatory compliance.
The scale of high-voltage EMC problems requires specialized analysis techniques and mitigation strategies. Unlike circuit-board-level EMC where distances are measured in millimeters, high-voltage systems span kilometers of transmission lines, occupy large substation yards, and interact with the surrounding environment in complex ways. Engineers working in this domain must consider atmospheric conditions, terrain effects, and the electromagnetic behavior of large metallic structures to develop effective EMC solutions.
Articles
Power Transmission EMC
Manage transmission line effects. Topics encompass corona discharge, audible noise, radio noise, television interference, power line carrier, fault transients, switching surges, insulation coordination, and right-of-way issues.
Substation EMC
Control substation interference. Coverage includes switching operations, bus arrangements, control systems, protection relays, communication systems, ground grid design, fence potentials, step and touch voltages, and maintenance safety.
HVDC Systems
Address DC transmission EMC. This section covers converter stations, DC line effects, harmonic generation, filter design, electrode effects, metallic return, ground return, bipolar operation, and control systems.
Smart Grid EMC
Enable intelligent power systems. Topics include smart meters, distribution automation, demand response, distributed energy resources, microgrids, energy storage, vehicle-to-grid, cyber security, and communication protocols.
About This Category
The High-Voltage System EMC category addresses the electromagnetic compatibility requirements of electrical power infrastructure. As power grids evolve to incorporate renewable energy sources, energy storage systems, and smart grid technologies, the EMC landscape becomes increasingly complex. Traditional concerns about radio noise and television interference now coexist with challenges related to power electronics harmonics, high-frequency communication systems, and cybersecurity considerations. This category provides the technical foundation needed to navigate these multifaceted EMC requirements while ensuring safe and reliable power system operation.