| 1. | The grounding grid is vital to the safety of the substation
接地网对保证变电站安全运行至关重要。 |
| 2. | Based on vb and matlab , diagnosis software for erosion of grounding grid is coded
采用vb语言和matlab软件相结合的方法编写了《接地网腐蚀诊断软件》 。 |
| 3. | As the grounding grid is underground , large - scale digging was adopted to find the erosion in practice all along
由于接地网埋设在地下,以往工程上一般通过大面积开挖检查接地网的腐蚀情况。 |
| 4. | At present , the small electric current method is widely used in the grounding measurements of ground grids in foreign countries
目前，国外接地网接地测量广泛采用了小电流测试方法，这种方法测量精度高，但价格昂贵。 |
| 5. | Furthermore , problems easy to make mistake are demonstrated , for instance , grounding resistance of large grounding grid is impedance
研究论证了被一些研究者错误理解的关于大型地网接地电阻是阻抗、四极法及其倒相法测量结果为阻抗等问题。 |
| 6. | It has been studied about the grounding grid erosion diagnosis theory , but a lot of engineering technologies have not been solved on putting the method into practice
一些专家学者对接地网的腐蚀诊断在理论上已有所研究,但诊断方法用于实际工程的一些技术问题还没有解决。 |
| 7. | Based on fault diagnosis theory , network theory , matrix theory and computer arithmetic , a method of optimized erosion diagnosis for medium or large - scale grounding grid is discussed in this paper
本文所研究的中大型接地网腐蚀优化诊断方法是将故障诊断学原理、网络理论、矩阵理论及计算机算法结合起来,应用于接地网腐蚀诊断这一工程实际问题。 |
| 8. | 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。 |
| 9. | This paper selects dc double - arm bridge , uses the four - port connection to remove the contact and connection resistances and reduce the electromagnetism interfere . grounding grid conductors fault levels are established during a lot of emulational computations , simulative experiments
使用直流双臂电桥,采用四端钮连接法,可大大降低现场中电磁干扰及引线电阻和接触电阻的误差影响。 |
| 10. | After this method is putted into practice , the number that total diagnosis nodes is thirty percent of the total grounding grid nodes . 110kv dianfa , 220 kv youting and 220 kv renhe substation grounding grid erosion optimized diagnosis experiments are done in practice
采用优化的初步测量方法后,整个诊断所需的测量节点对数约为30 % .进行了典发110kv 、邮亭220kv 、人和220kv变电站现场实测。 |
