国缆检测完成±535kV直流电缆（90°C）系统型式试验

Type test of ±535 kV HVDC Cable System (90°C) SuccessfullyCompleted by TICW

近日，国缆检测(TICW)完成了±535kV交联聚乙烯绝缘直流电缆（陆地用）系统型式试验。该电缆系统由导体截面积3000mm²电缆、组合预制式接头和两只复合套式户外终端构成。其中，电缆的生产厂家为特变电工山东鲁能泰山电缆有限公司，附件的生产厂家为长缆电工科技股份有限公司和特变电工昭和(山东)附件有限公司，试验依据的标准是GB/T31489.1—2015、GB/T31489.2—2020、GB/T31489.4—2020和CIGRETB 496，试验结果满足标准要求。

The type test of ±535kV XLPE insulated HVDC land cable system has successfully been completed inTICW recently. The cable system is consisted of land cable with conductorcross-sectional area of 3000 mm², one combined pre-fabricatedinsulation joint, and two composite outdoor terminations. The cable is providedby TBEA Shandong Luneng Taishan Cable Co., Ltd., and the accessories areprovided by Changlan Electric Technology Co., Ltd. and SHOWA-TBEA (Shandong)Cable Accessories Co., Ltd. The tests were conducted according to GB/T31489.1—2015, GB/T 31489.2—2020, GB/T 31489.4—2020, and CIGRE TB 496, and thetest results comply with the requirements of the standards.

此次被测试的直流电缆系统导体最高运行温度T_c,max为90°C，TICW早前完成的相同电压等级直流电缆系统型式试验均为70°C。此次试验中∆T_max也明显高于以往一般结果，最终该试验系统经受住了考验。

The maximum operating temperature T_c,maxof the ±535kVcable system under test is 90°C, while the cable systems of the same voltagelevel previously passed type test in TICW were all designed with T_c,max of70°C. The maximum temperature difference over the insulation ∆T_max is muchhigher than what were recorded in past tests. The ±535kVcable system passed the type test successfully.

国缆检测现拥有两处超高压试验场所，有国际一流的检测设施和人才团队，已为国内、外客户开展过多项直流电缆系统的试验任务，典型电压等级包括±160kV、±200kV、±320kV、±400kV、±525kV、±535kV和±550kV。

TICW has two extrahigh voltage testing laboratories. TICW has been providing excellent servicesfor customers from China and countries around the globe on test projects of DCcable system with typical voltage level of ±160 kV, ±200 kV, ±320 kV, ±400 kV, ±525 kV, ±535 kV, and ±550 kV, with world leading testing facilitiesand technical team.