CAJ | 학술논문

为确定10kA直流高温超导电缆（10kA超导电缆）本体和测控系统绝缘水平,讨论了其本体结构特点和电场分布特点以及绝缘水平的影响因素;对Pt100型铂电阻温度传感器进行了耐压、耐流试验;构建了由模型电缆和模拟测控回路组成的系统并对其进行耐压试验。结果表明温度传感器在5kV情况下耐压情况良好,但较大电流容易导致其损坏;高压下普通密封转换端子外壳对温度传感器针脚放电并导致传感器损坏,需设计专用密封端子。研究认为10kA超导电缆本体绝缘设计需适当提高绝缘耐压水平,测控系统浮电位设计满足10kA超导电缆工作状态下的测控需要,但测控系统绝缘设计中需防止产生因高压产生的局部放电电流加载于测量回路,10kA超导电缆系统集成后进行的系统耐压测试表明其绝缘系统满足运行要求。
위학정10kA직류고온초도전람（10kA초도전람）본체화측공계통절연수평,토론료기본체결구특점화전장분포특점이급절연수평적영향인소;대Pt100형박전조온도전감기진행료내압、내류시험;구건료유모형전람화모의측공회로조성적계통병대기진행내압시험。결과표명온도전감기재5kV정황하내압정황량호,단교대전류용역도치기손배;고압하보통밀봉전환단자외각대온도전감기침각방전병도치전감기손배,수설계전용밀봉단자。연구인위10kA초도전람본체절연설계수괄당제고절연내압수평,측공계통부전위설계만족10kA초도전람공작상태하적측공수요,단측공계통절연설계중수방지산생인고압산생적국부방전전류가재우측량회로,10kA초도전람계통집성후진행적계통내압측시표명기절연계통만족운행요구。
In order to determine the insulation level both for the 10kA DC high-temperature superconducting（HTS） cable（10kA superconducting cable）and measurement and control system,we discussed the characteristics of structural features,electric field distribution of 10kA HTS cable,and impact factors of the insulation level;and experimentally researched voltage withstands and the current for Pt100 platinum resistance temperature sensor.Moreover,we built a testing system compoed of a model cable and analog measurement,and tested the control loop system and withstand voltage.The results show that,the temperature sensor operates well under 5kV,but the larger current will lead to damage the sensor;discharge will occur under high voltage between the shell of common conversion terminal and pin-linked temperature sensor,and will lead to sensor damage;thus,it is necessary to design a special terminal.Higher level insulation is required in designing 10kA HTS cable noumenal insulation,the floating potential design should meet the insulation needs of monitoring,and the control system needs to prevent occurring of partial discharge.The voltage withstand test carried on the 10kA HTS cable system after the integration shows that the insulation system meets operational requirements.