| 摘要 | 第1-5页 |
| Abstract | 第5-7页 |
| Contents | 第7-10页 |
| 1 Introduction | 第10-16页 |
| ·Power networks of electrified traction railway | 第10页 |
| ·Types of AC traction power supply system | 第10-13页 |
| ·Introduction of types of AC traction power supply system | 第10-12页 |
| ·Comparison of the different types of power supply | 第12-13页 |
| ·Selection of power supply system | 第13-14页 |
| ·Researchful contents | 第14-16页 |
| ·Main works of the thesis | 第14-15页 |
| ·Reaserchful method | 第15-16页 |
| 2 Soil resistivity and Resistance to earth of Foundation | 第16-25页 |
| ·Soil resistivity | 第16-20页 |
| ·Factors to influence soil resistivity | 第16-18页 |
| ·Principle of measurement | 第18-19页 |
| ·Steps of measurement | 第19-20页 |
| ·Resistance to earth of foundation used as earth electrode | 第20-25页 |
| ·Principle of measurement | 第20-21页 |
| ·Steps of measurement | 第21-23页 |
| ·Formulas of resistance to earth for various types of earth electrodes | 第23-25页 |
| 3 Safety requirement | 第25-38页 |
| ·Summary | 第25-27页 |
| ·Safety of person | 第25-26页 |
| ·Operation and Protection of installation | 第26-27页 |
| ·The execution of the intended operation of the system | 第27页 |
| ·Touch voltage and step voltage | 第27-32页 |
| ·Definition | 第27-28页 |
| ·Electric short models | 第28-32页 |
| ·Rail potential | 第32-34页 |
| ·Definition | 第32-33页 |
| ·Factors to determine the value of rail potential | 第33-34页 |
| ·Accessible voltage and Maximum permissible voltage | 第34-38页 |
| 4 Earthing and Equipotential bonding | 第38-52页 |
| ·General | 第38-41页 |
| ·Effective leakance per unit length | 第38-39页 |
| ·Earthing and equipotential bonding | 第39页 |
| ·Traction system earth and integrated earth system | 第39-41页 |
| ·Maximum rail potential under operational condition | 第41-47页 |
| ·Different spacing of bonding with constant value of resistance to earth of earth electrode foundation | 第42-44页 |
| ·Different resistance to earth of earth electrode foundation with constant value of spacing of bonding | 第44-46页 |
| ·Analyse | 第46-47页 |
| ·Maximum rail potential under short circuit condition | 第47-52页 |
| ·A kind of short circuit happens at any point on line | 第47-48页 |
| ·Rail potential at the location of short circuit with different intervals of bonding and earth resistance | 第48-49页 |
| ·Rail potential with different kinds of short circuit | 第49-52页 |
| 5 Return circuit | 第52-62页 |
| ·Definition | 第52页 |
| ·Distribution of return currents | 第52-56页 |
| ·Significance of distribution of return currents | 第52-54页 |
| ·Particularities of the JJ-Line | 第54-55页 |
| ·Comparison of rail potential with and without return conductors | 第55-56页 |
| ·Influence of distribution of return currents by spacing of equipotential bonding and effective leankance per unit length | 第56-57页 |
| ·Distribution of return currents under short circuit condition | 第57-62页 |
| ·Short circuit happens between overhead contact lines and rails | 第57-58页 |
| ·Short circuit happens between overhead contact lines and aerial return conductor | 第58-60页 |
| ·Analyse | 第60-62页 |
| Conclusion and Future studies | 第62-64页 |
| 致谢 | 第64-65页 |
| 参考文献 | 第65-68页 |
| 附录 | 第68-70页 |
| 攻读硕士学位期间发表的论文及参加的科研项目 | 第70页 |
