CAJ | 학술논문

为解决难以方便、有效地在线监测交、直流输电线路电晕损耗的问题，提出了适用于交、直流输电线路电晕损耗在线监测的金属化膜法。该方法在输电导线表面包裹一层薄的、一定长度的金属化膜，包裹薄膜朝外的一面是导电金属镀层，靠近输电导线的一面是绝缘材料层。在金属镀层和输电分裂导线间并联采样电阻。采样电阻将流过的泄漏电流转换为电压信号，该信号经无线或光纤传输至地面上的计算机。输电导线的电压经电压互感器或分压器变换后也传输至计算机进行采集。通过在计算机上编制软件计算电晕电流和损耗等数据，对薄膜处泄漏电流和首端电阻处泄漏电流测量结果进行相关系数分析、时延和单位长度泄漏电流比较等的研究，结果表明该方法对于测量电晕损耗是可行的。该方法具有实用性，不仅适用于空载和有载输电线路，也适用于交流和直流输电线路。
위해결난이방편、유효지재선감측교、직류수전선로전훈손모적문제，제출료괄용우교、직류수전선로전훈손모재선감측적금속화막법。해방법재수전도선표면포과일층박적、일정장도적금속화막，포과박막조외적일면시도전금속도층，고근수전도선적일면시절연재료층。재금속도층화수전분렬도선간병련채양전조。채양전조장류과적설루전류전환위전압신호，해신호경무선혹광섬전수지지면상적계산궤。수전도선적전압경전압호감기혹분압기변환후야전수지계산궤진행채집。통과재계산궤상편제연건계산전훈전류화손모등수거，대박막처설루전류화수단전조처설루전류측량결과진행상관계수분석、시연화단위장도설루전류비교등적연구，결과표명해방법대우측량전훈손모시가행적。해방법구유실용성，불부괄용우공재화유재수전선로，야괄용우교류화직류수전선로。
The metalized membrane method, in which transmission line was coated by metalized membrane where the insulated layer was next to transmission line and mental layer was outwards, was applied to monitor the corona losses on AC/DC transmission lines online. The sampling resistance between transmission line and membrane could convert leakage current to voltage signal which would be sent to a computer by wireless telecommunications way or optical fiber transmission way. The voltage of transmission line would also be sent to a computer after converting by PT or voltage divider. The leakage current, corona loss, and other data could be calculated by a prepared program on the computer. The measurement results of the leakage current of the metalized membrane and the leakage current on the sampling resistance at the beginning of the transmission were compared, and the related coefficient, time de- lay and unit length leakage current were analyzed. Results prove that this new method is feasible to measure corona losses, and easy to realize monitoring online. This method can be practically applied to not only on-load and no-load lines, but also AC and DC transmission lines.