A Method to Improve the Efficiency of Onsite Damped AC Test of Medium-Voltage Cables

被引：1

作者：

Yang, Saike ^{[1
]}

Yue, Xianyu ^{[1
]}

Chen, Junbai ^{[1
]}

Wang, Li ^{[1
]}

Sun, Tingxi ^{[2
]}

Li, Hongjie ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Insulat & Power Equipment, Xian 710049, Peoples R China

[2] Guangdong Power Grid Corp, Zhuhai Power Supply Bur, Zhuhai 519000, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2022年 / 37卷 / 04期

关键词：

Partial discharges; Power cables; Voltage; Couplers; Sensitivity; Background noise; Testing; MV cables; damped AC voltage; PD detection;

D O I：

10.1109/TPWRD.2022.3166027

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, a simultaneous three-phase (STP) partial discharge (PD) test method for onsite damped AC test of medium-voltage cables is presented. By using the method, the onsite test efficiency improves nearly three times. A STP PD test module is implemented that is adapted to the commercial DAC test system. Onsite test was carried out on a 10 kV medium-voltage cable using the proposed test module to verify the feasibility. Benefitting from the symmetry of noises of the three phases, the test sensitivity is improved significantly. In the noise suppression experiment, the maximum background noise drops to 4.24 mV from 34.67 mV.

引用

下载

页码：3424 / 3427

页数：4

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