110kV开关站接地引下线的热稳定校核

110kV Switching Station Grounding Down Lead Thermal Stability Check

随着电力系统容量的不断增大,流入接地网的短路电流越来越大,如果接地引下线的热稳定达不到要求,在发生接地短路时就会把接地线烧断,危及人员、设备和电网安全。文章通过对黄龙滩水力发电厂110kV开关站接地引下线的热稳定校核,及时了解接地引下线热容量情况,确保开关站内电气设备和运行维护人员的安全。

The short-circuit current flowing into the grounding network is growing with the increas- ing capacity of the power system. If the grounding clown lead thermal stability cannot meet the re- quirements, a ground fault will burn-out the grounding down lead and thereby endanger the safety of personal, equipment and grid. By checking the thermal stability of the grounding clown lead in the 110 kV switching station of Huanglongtan hydropower plant, its thermal capacity was know in time to en- sure the safety of the equipments and maintenance personnel in the switching station.