| 引用本文: | 康小宁,杜岩平,索南加乐,宋国兵,张鹏,田宏强.基于模型误差的自适应方向元件[J].电力自动化设备,2009,(5): |
| .Adaptive directional element based on model error[J].Electric Power Automation Equipment,2009,(5): |
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| 摘要: |
| 为克服目前快速方向元件动作范围整定的盲目性和保守性,提出了基于模型误差的自适应方向元件.模型误差反映了计算模型与实际模型之间的差别,它与保护计算的相位误差有确定的关系.使用ATP仿真软件建立双端电源超高压输电线路模型.通过R-L模型参数识别的方法判断故障方向,把反映系统网络结构的微分方程产生的归一化误差作为模型误差.通过大量故障仿真计算建立模型误差与相位误差之间的关系.故障后实时地计算模型误差,根据模型误差与相位误差的关系自适应地调整方向元件的动作范围.仿真结果显示该方法能使保护更好地适应系统的状况,提高了方向元件的性能. |
| 关键词: 方向元件 模型误差 相位误差 自适应 保护 故障 |
| DOI： |
| 分类号:TM773 |
| 基金项目:国家自然科学基金，高等学校博士学科点专项科研基金? |
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| Adaptive directional element based on model error |
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KANG Xiaoning DU Yanping SUONAN Jiale SONG Guobing ZHANG Peng TIAN Hongqiang
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| Abstract: |
| An adaptive directional element based on model error is proposed to avoid the conservatism and blindness in the operational range setting of current fast directional elements.The model error describes the differences between calculating model and real model,having a definite relationship with the phase error calculated by the directional element.A double-source EHV system model is built using ATP software.Fault direction is judged by the parameter identification method based on R-L model.The normalized erro... |
| Key words: directional element model error phase error adaptive protection fault |
