1) high soil resistivity
高土壤电阻率
1.
This paper analyzes the restriction of grounding system design based on the requirements of equipment safety and personal safety,and discusses the limitation of conventional design methods in high soil resistivity regions with a real engineering project.
针对高土壤电阻率地区变电站接地系统的接地电阻很难满足规程要求的问题,根据设备安全与人身安全的要求,分析了接地网设计的约束条件,并结合工程实例讨论了常规的接地网设计方法在高土壤电阻率地区的局限性;提出了一种不拘泥于现有规程中接地电阻限值的设计思路,即结合变电站的运行参数与设备参数得到接地电阻允许值的上限并利用均衡电压的思想优化接地网结构,然后根据接触电压与跨步电压的要求校核、修改设计方案以保证人身安全,同时,适度增加对一、二次设备保护的投入,保证设备安全。
2.
So the grounding device must be processed by such high soil resistivity.
天湖水电站处在花岗岩地区,土壤电阻率高,接地装置按高土壤电阻率地区处理。
3.
Because the resistivity of soil around the grounding device determines the grounding resistance of the grounding device to a great extent,the grounding resistance of substations in high soil resistivity region is difficult to satisfy the demand of safe.
接地电阻值是衡量变电站接地系统是否符合安全要求的重要指标,由于接地装置周围土壤电阻率的高低在很大程度上决定了接地装置接地电阻的大小,建在高土壤电阻率地区的变电站接地电阻一般很难满足安全要求。
2) Soil resistivity
土壤电阻率
1.
Design of signal detective system of the soil resistivity measurement;
土壤电阻率测量的信号检测系统设计
2.
The influence of soil resistivity and coating defects on IR drop error in cathodic protection(CP)potential measurement was studied by theoretical methods.
理论分析土壤电阻率和涂层缺陷电阻等参数对埋地管道阴极保护电位测量时IR降误差的影响 ,建立IR降电阻因子计算模型 ,并用实验数据验证 ,此外 ,还讨论了IR降误差的工程预测方法 。
3) resistivity of soil
土壤电阻率
1.
Considering the influence of inductive magnetic field among operating lines,resistivity of soil and sag of transmission lines on transmission line parameters,the influential elements are quant.
由此得出以下结论:多回运行线路间的磁场作用会使线路阻抗值变大;不同的土壤类型及湿度、温度等环境因素会影响土壤电阻率值,进而影响零序阻抗值;在长距离线路中,将考虑弧垂的地面平均高度作为导线对地高度来计算零序电容会大大减小与实测值的误差。
2.
After measuring the resistivity of soils and performing continuous monitoring of underground stray current in th.
对该区电泵井进行地下土壤电阻率测试及现场连续监测发现,地下不同深度存在杂散电流,电泵井套管腐蚀是土壤腐蚀及杂散电流腐蚀综合作用的结果。
4) Soil resistance
土壤电阻率
1.
The soil causticity is evaluated from the aspects of pH value,Cl hydronium content,mineralization degree and soil resistance,the soil causticity level of Cangzhou and Hengshui region are measured off,to provide based foundation for material chosen and anti-corrosion measures chosen of earthing network of Cangzhou and Hengshui region.
通过对沧州、衡水地区部分变电站接地网开挖检查和土壤分析,初步掌握了沧州、衡水部分代表性变电站接地网腐蚀情况,以pH值、氯离子含量、矿化度(全盐含量)、土壤电阻率等因素来综合评价土壤腐蚀性,划分了沧州、衡水地区土壤腐蚀性等级,为沧州、衡水地区接地网选材和防腐措施选用提供了基础依据。
5) soil resistance rate
土壤电阻率
1.
The environmental difference between city gas pipeline and long distance gas pipeline is compared, the limitations of current methods for measuring the soil resistance rate, and the possibility of judging bacterial corrosion are analyzed, and some appropriate improvement measures are put forward.
比较了城镇燃气输配管道与长输管道的周边环境的差别,分析了现行的测取土壤电阻率和判断细菌腐蚀可能性的方法的局限性,提出了相应的改进措施。
6) resistivity of soil
土壤的电阻率
补充资料：土壤电阻率
土壤电阻率
earth resistivity
turongd}onzu}u土坡电阻率(earth resistivity)单位体积的正立方体相对两面间土壤的电阻，单位为欧·米(n·m)。土壤电阻率主要与土壤中所含的水分及电解质有关，温度对离子的活动及含水量有影响，从而对土城电阻率也有很大的影响.土壤电阻率是计算接地电阻和设计接地装置的基本数据。通常应在设计前实侧确定。在设计时如缺乏实测数据，可参考下表中所列的数值。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条