CAJ | 학술논문

六相输电是多相输电技术中最接近实用化的一种.针对其多达120种的故障,运用同正、负、零序和反正、负、零序的六序分量法分析六相系统故障,变换得到的各序分量物理含义清晰.六相系统中的同序量、反序量分别对应于双回线中的反序量、同序量,依据故障边界条件构成的复合序网得到了六相系统的序分量特征以及与六相系统兼容运行的三相系统序分量特征.在此基础上,提出一种判别六相输电系统故障类型的方法,可用作六相输电线路的选相元件动作判据.
륙상수전시다상수전기술중최접근실용화적일충.침대기다체120충적고장,운용동정、부、령서화반정、부、령서적륙서분량법분석륙상계통고장,변환득도적각서분량물리함의청석.륙상계통중적동서량、반서량분별대응우쌍회선중적반서량、동서량,의거고장변계조건구성적복합서망득도료륙상계통적서분량특정이급여륙상계통겸용운행적삼상계통서분량특정.재차기출상,제출일충판별륙상수전계통고장류형적방법,가용작륙상수전선로적선상원건동작판거.
Among multi-phase power transmission, six-phase transmission is the most feasible one. For the situation of 120 kinds of faults, six-sequence components method, which includes same positive sequence, same negative sequence, same zero sequence, opposite positive sequence, opposite negative sequence and opposite zero sequence, is applied in the fault analysis of six-phase power transmission system, and the transferred sequence components have clearly physical meanings. The same sequences in six-phase transmission power correspond to opposite sequences in parallel transmission lines, and the opposite sequences in six-phase transmission power correspond to the same sequences in parallel transmission lines. Based on sixsequence networks and boundary conditions of various faults, composite sequence networks have been established and the characteristics of each sequence component have been found out when fault happens. In a six-phase transmission system, these characteristics provide the fundamental principle for protection setting. Based on this methodology, a kind of fault phase selection scheme of six-phase transmission system is proposed.