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接地系统是电气化铁路安全运行的一项重要保障措施。鉴于目前牵引变电所接地网设计及处理形式的多样性,结合高速铁路客运专线接地设计要求,通过比较、分析不同接地方案及接地网材质的特点,得出了不同接地形式的优缺点,最终确定了接地网材质采用抗腐蚀性较好,泄流能力较强的铜材质接地网。并针对福厦线电气设施的具体情况,对各牵引变电所接触电势及跨步电势进行了计算及校验。最终确定了福厦高速铁路牵引变电所接地系统的设计方案。
Grounding system is an important safeguard for the safe operation of electrified railway. In view of the diversity of design and processing forms of grounding network for traction substations, combined with the design requirements of high-speed railway passenger dedicated line grounding, by comparing and analyzing the characteristics of different grounding schemes and grounding network materials, the advantages and disadvantages of different grounding forms are obtained, and finally Determine the use of good grounding material corrosion resistance, discharge capacity of copper grounding network. According to the specific conditions of Fuxia-Xiamen line electrical facilities, the contact potential and stride potential of each traction substation were calculated and verified. Finally, the design scheme of grounding system for traction substation of Fuxia high-speed railway is confirmed.