Capacitive Voltage Sensor with Shielded PCB Divider

The patent applies local quality by creating a non-uniform electric field distribution through specifically positioned electrodes and dielectric structures. The capacitive voltage divider uses localized high-dielectric-constant materials and strategically placed electrodes to concentrate electric field lines in controlled regions, reducing stress at critical sensor points while maintaining measurement accuracy across the voltage range.

The patent introduces intermediary elements including shield electrodes and dielectric barriers positioned between the high voltage conductor and the sensing elements. These intermediaries redistribute the electric field, preventing direct stress concentration on the sensor components while still allowing accurate voltage measurement through the capacitive division principle.

The patent implements nesting by placing the capacitive voltage divider structure directly around the power line conductor, with the PCB and sensing elements integrated within the same housing. This nested arrangement allows compact integration while maintaining precise electrical geometry, as the sensing capacitors are positioned in fixed, controlled relationships to the high voltage conductor, ensuring measurement accuracy despite the compact form factor.

The patent uses composite material structures combining different dielectric materials with varying permittivity values in the capacitive voltage divider. This allows precise control of the voltage division ratio within a compact structure, as the composite dielectric arrangement enables fine-tuning of capacitive values without increasing overall sensor size, thereby maintaining both integration ease and measurement precision.