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| 小接地电流系统微机接地保护装置的开发 | |
| 引用本文： | 徐永生,韦钢,张乐,陶华钉. 小接地电流系统微机接地保护装置的开发[J]. 上海电力学院学报, 1998, 14(1): 49-54 |
| 作者姓名： | 徐永生 韦钢 张乐 陶华钉 |
| 作者单位： | 电力工程系;电力工程系;电力工程系;电力工程系 |
| 摘 要： | 对小接地电流系统接地时的故障特征进行厂分析，提出了利用零序突变量，即故障分量特征为选线判据的保护方案，这从理论上解决了原有同类装置受系统运行方式改变、线路参数不对称、接地过渡电阻和测量回路误差等因素影响而误动的问题．装置采用单片微处理器实现． |
| 关 键 词： | 小接地电流系统 零序故障分量 接地保护 |
| 收稿时间： | 1997-02-19 |
Development of Earthing Protective Device in Neutral Point Indirect Gronnding Distribution System |
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| Xu Yongsheng,Wei Gang,Zhang Le and Tao Huading. Development of Earthing Protective Device in Neutral Point Indirect Gronnding Distribution System[J]. Journal of Shanghai University of Electric Power, 1998, 14(1): 49-54 | |
| Authors: | Xu Yongsheng Wei Gang Zhang Le Tao Huading |
| Affiliation: | Department of Electric Power Engineering |
| Abstract: | In this paper, the zero -sequence component characteristic is discussed when carth -fault occurs in the neutral point indirect grounding system. And a new protective scheme of seecting earth-farct line batal on zero -sequence fanlt component is proposed. By means of the new scheme, the carth-fantt line can be selectal correctly in spite of the system line with unsymmetrical parametr, operation mode changing, large earth -resistance and error of mearsure circuit. The proteetive device is aslized by microprocessor. |
| Keywords: | neutral point indirect gronnding distribution system zero-squence fault component earthing protection |
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