| 输电线不同故障对距离保护影响的仿真研究 |
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| 引用本文： | 王辉.输电线不同故障对距离保护影响的仿真研究[J].宁夏电力,2011(1):35-38. |
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| 作者姓名： | 王辉 |
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| 作者单位： | 宁夏电力公司隆德供电局,宁夏,固原,756300 |
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| 摘 要： | 针对输电线路中相间不同短路故障,分析故障对输电线距离保护的影响。根据输电线距离保护原理,计算三相系统中各相电压值,利用PSCAD/EMTDC建立双端电源系统的仿真模型并进行仿真实验。根据计算的测量电压、电流和阻抗,判断故障点距离及保护动作特性。结果表明：双端电源系统中三相线路不同相间故障时,其对应测量阻抗能够正确反映保护处故障点的距离,其阻抗继电器能够准确而快速动作,保证了系统对故障反应的灵敏性,提高了保护的可靠性。
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| 关 键 词： | 输电线 距离保护 故障 PSCAD 仿真 |
Simulation research for the different fault of power line exerting an influence on the distance protection |
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| WANG Hui.Simulation research for the different fault of power line exerting an influence on the distance protection[J].Ningxia Electric Power,2011(1):35-38. |
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| Authors: | WANG Hui |
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| Affiliation: | WANG Hui(Ningxia Longde Electric Power Supply Bureau,Guyuan Ningxia 756300,China) |
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| Abstract: | Aim at the different short circuit fault happening between the phases of power line,analyzes the faults exerting an influence on the distance protection of power line,according to the basic principles of the distance protection of power line,calculates the value of every phase voltage in the three-phase system,uses PSCAD/EMTDC establishing the simulation model of double-ended power supply system and makes simulation experiment.By the measuring voltage,current and impedance,judges the distance of fault point... |
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| Keywords: | PSCAD |
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