Cable connector

A high-voltage (HV) connection system, the HV connection system comprising:

• a HV plug-connector including:
• a conductive core;
• and
• a bushing isolating the conductive core, the bushing having:
• a first isolation part isolating a first portion of the conductive core, wherein an outer surface of the first isolation part includes a conical surface;
• a second isolation part isolating a second portion of the conductive core;
• a mounting part extending radially beyond the first isolation part and the second isolation part, the mounting part comprising a mounting shoulder;
• and
• a mounting ring configured to be placed on the mounting shoulder;
• wherein the first isolation part and the first portion of the conductive core form a plug, and wherein the bushing has a dielectric breakdown voltage higher than 20 kV/mm, the HV plug-connector being configured to be clamped to the HV electrical unit via the mounting ring, and
• a HV socket-connector including:
• a first channel configured to insert a HV cable with a cable lug;
• and
• a second channel having openings, an inner surface of the openings including a conical surface;
• wherein the second channel is overlapping the first channel and an opening of the cable lug aligns with a center line of the second channel;
• and
• wherein the HV socket-connector has a dielectric breakdown voltage higher than 20 kV/mm;
• wherein the HV plug-connector is installed in an electrical HV unit to form an electrical connection between the second portion of the conductive core and the electrical HV unit in a way that the plug extends outwards of the electrical HV unit;
• wherein one opening of the HV socket-connector is plugged on the plug of the HV plug-connector to align the conductive core with the center line of the second channel;
• and
• wherein an electric connection is created between the cable lug and the conductive core.

A wind turbine generator (WTG) system comprising a HV transformer, a HV gas-insulated switching gear (HVGIS) and for each phase of the transformer a HV cable, wherein:

• at least for one phase:
• a HV socket-connector including:
• a first channel configured to insert the HV cable with a cable lug;
• and
• a second channel having openings, an inner surface of the openings including a conical surface;
• wherein the second channel is overlapping the first channel and an opening of the cable lug aligns with a center line of the second channel, and
• wherein the HV socket-connector has a dielectric breakdown voltage higher than 20 kV/mm,
• the HV cable is inserted in the first channel of the HV socket-connector to align the cable lug of the HV cable with the center line of the second channel of the HV socket-connector;
• a HV plug-connector including:
• a conductive core;
• and
• a bushing isolating the conductive core, the bushing comprising:
• a first isolation part isolating a first portion of the conductive core, wherein an outer surface of the first isolation part includes a conical surface;
• a second isolation part isolating a second portion of the conductive core;
• a mounting part extending radially beyond the first isolation part and the second isolation part, the mounting part comprising a mounting shoulder;
• and
• a mounting ring configured to be placed on the mounting shoulder;
• wherein the first isolation part and the first portion of the conductive core form a plug, and the HV plug-connector is configured to be installed in an electrical HV unit to form an electrical connection between the second portion of the conductive core and the electrical HV unit in a way that the plug extends outwards of the of the electrical HV unit, and wherein the bushing has a dielectric breakdown voltage higher than 20 kV/mm, the HV plug-connector being configured to be clamped to the HV electrical unit via the mounting ring, and
• the HV plug-connector is installed in the HV transformer to form an electrical connection between the second portion of the conductive core and the HV transformer in a way that the plug extends outwards of the transformer;
• one opening of the HV socket-connector is plugged on the plug of the HV plug connector to align the conductive core with the center line of the second channel;
• an electrical connection is created between the cable lug and the conductive core to electrically connect the HV cable to the HV transformer;
• and
• the HV cable is electrically connected to the HVGIS.