On the other hand , how to decrease the grounding resistance economically and effectively in a limited area with high soil resistivity becomes an important question of power system for discussion 同时，在地网面积有限，土壤电阻率较高等复杂情况下，如何经济、有效地减小接地电阻也成为电力系统十分关注的课题。
The results show that the vertical grounding electrodes can effectively decrease grounding resistance , step and touch voltages of the grounding system and reduce the influence of seasonal factors on the grounding system 分析表明，增设垂直接地极能有效减低接地系统的接地电阻、减小发变电站的接触电压和跨步电压、减小季节因素对地网安全性的影响。
The ground screen is utilized to obtain enhanced mirror affect , yet due to the disequilibrium of the electricity feeding , the coupling loses balance , which results in a shift of zero point of the vertical pattern 地网的作用是使地面能够起到更好的镜像作用,但是由于线性阵列相对于地网结构而言馈电不均衡,导致了耦合的不均衡,结果是使得线性阵列的垂直面方向图零点产生了偏移。
By using gpc grogram , the paper calculates the variety of grounding potential with different placements of grounding rods . on the basis of calculations and analysis , the model of grounding grids and current - electrode are presented 使用gpc接地软件计算了各种接地体不同布置时地网外地面电位的变化，阐述了将不同布置情况的接地网等效为一以地网最大边长为直径的圆盘电极的理论。
The safety of grounding systems for substations or power generating stations in high resistivity areas is very important in the power system , since the grounding systems need to be buried very deeply as a very important countermeasure to improve the safety of substations or power generating stations 确保高土壤电阻率地区发变电站接地系统的安全性是电力部门关心的问题，将接地系统向纵深方向发展是解决高土壤电阻率地区及城区地网安全性的重要措施。
Design verification problem needs hierarchy methodology . because the effect of interconnection has taken in the highest flight , design verification for the interconnection network , for example , only the completed verification for performance of power supply of p / g network can ensure the reliability of chip 由于芯片内互连线作用已占相当重要的地位，在对互连线网络作精确的设计验证，例如，芯片电源地网的供电性能的验证，是芯片工作的可靠性的保证。
The resistance between two nodes can be measured accurately and quickly on the nice simulative platform which is established using atpdraw . the parameters of the grounding grid in practice is simulated on this simulative platform , and lots of simulative experiments were done . the method for erosion optimized diagnosis of medium or large - scale grounding grid is concluded : elementary diagnosis integrating with supplementary diagnosis is efficient 利用atpdraw软件搭建起良好的模拟试验平台可以准确快速的计算出接地网任两节点对间电阻值,在这一平台上准确模拟实际接地网参数,结合软件进行了大量模拟试验,总结出中大型接地网优化诊断方法:采用初步测量与再次补测相结合的方法效率很高;在初步测量时,对中型接地网宜采用大跨距测量法;对大型地网则采用大分块结合不动点测量的方法效果较好。
But how to measure grounding resistance of large grounding grid simply and exactly is a difficult problem to electric power staff all the time . this paper has classified measuring methods of grounding resistance at home and abroad , and has analyzed interference factors during measurement , and has summarized principle and characteristic and measuring current and so on of various measuring methods 本文对国内外现有或正在研究的测量方法进行了分类，分析了测量地网接地电阻干扰的主要来源，并首次全面地对各种方法的原理、特点、测试电流、消除干扰能力和测试结果进行了比较分析、总结归纳，方便后来者研究应用。
It firstly utilizes the characteristic of layout geometric information to partition the global network into some sub networks . after these sub networks are compressed by cholesky factorization , the sub networks edge nodes are combined with other nodes . calculating the final linear equations group , the algorithm can be very effective 算法首先利用版图几何特征，按最小割原理将电源地网划分成子网，利用对称正定矩阵cholesky分解压缩子网内点；将子网等效成与网络其它部分连接的结点集的等效网络，最后通过计算压缩后的网络，获得线性方程组求解答案。
The protective area of lightning rod was analyzed and simulated with computer . a standpoint using “ global five lightning rod ” to increase base station capacity of resisting flank attack lightning is proposed . . according to principle of faraday screen cage , a standpoint using “ accessorial earth net by mixed grounding ” to increase base station capacity for discharging quickly as lightning rod lead lightning is presented 根据法拉第屏蔽笼的屏蔽原理,对基站建筑物的屏蔽接地、防雷地网提出了采用“混合接地体辅助地网”对基站建筑物的“基础接地”进行改进,提高了基站接闪器“引雷”放电时的快速泻电能力。
