Wind power plant current collection line reclosing method based on wireless differential protection

• Main Authors: WEI JUNHONG, LI WEINAN, FU QIANG, CHEN YUEMING, LI NAN, YU JI, ZHANG MINGYUE, HOU SUYANG, LONG HAIXU, ZHANG YANPENG, ZHANG HAIYING, HUANG SIYU
• Format: Patent
• Language: Chinese; English
• Published: 22.02.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The invention discloses a wind power plant current collection line reclosing method based on wireless differential protection, belongs to the field of power system new energy power generation engineering, and is mainly applied to a control protection device of a wind power plant current collection line. Multi-end wireless differential motion of the current collection line is realized based on a 5G network and an electronic transformer; when a fault occurs in the current collection line area, reclosing is started; when a fault occurs outside the current collection line area, locking and reclosing are carried out; and reclosing time is longer than low-voltage ride-through time, and reliable arc extinguishing of instantaneous fault points of the line is guaranteed. The wireless differential protection can judge whether a fault point is on a current collection circuit or not, if the fault point is on the circuit, reclosing is started, if the fault point is on the box transformer side, reclosing is locked, and the