| 摘要: |
| 电分相和电能质量问题是制约我国高速铁路发展的主要技术问题，为了适应高速铁路发展的需要，可采用新型电缆供电方式。在考虑电缆间耦合作用的基础上，计算了单相电缆的电气参数。基于电缆牵引网等值电路推导了单、复线电缆牵引网的电流分配规律与等效阻抗。以实际线路为例完成了新型电缆供电方案的设计，确定了主变电所容量、牵引变压器容量和各区段的电缆选型，并就所提方案进行了可行性验证和经济性分析。仿真结果表明，所提新型电缆供电方案在空载和负载条件下，电缆和接触网的电压水平均在相应的电压允许范围内，满足牵引供电需求；与已有牵引供电方案相比，新型电缆供电方案具有较明显的经济效益。 |
| 关键词: 电气化铁路 电缆供电方式 电气参数 电流分配规律 阻抗特性 方案设计 经济性分析 电能质量 |
| DOI：10.16081/j.issn.1006-6047.2018.07.026 |
| 分类号:U224.8 |
| 基金项目:国家自然科学基金资助项目(51307143)；中国铁路总公司“电气化铁路贯通同相供电与运用技术研究”重点科技项目(2015J005-A)；温州市域铁路S1线同相供电项目 |
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| New-type cable traction power supply scheme of electric railroad |
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ZHOU Ting, XIE Shaofeng
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School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
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| Abstract: |
| Electrical sectioning and power quality are the main technical problems restricting the development of high-speed railway in our country. To meet the development needs of high-speed railway, a new-type cable traction power supply mode is adopted. Considering the coupling effect of cables, the single-phase cable's electrical parameters are calculated. The current distribution rules and equivalent impedance of single and double cable traction network are deduced based on the equivalent circuit of cable traction network. Taking the actual track as an example, the power supply scheme of new-type cable traction is established, the capacity of main substations and traction transformers and the type of each cable section are determined. The feasibility verification and economic analysis of the proposed scheme are carried out. Simulative results show that, the voltage of cable traction network of the proposed new-type cable traction power supply scheme is in the corresponding allowed voltage range in either no-load or load condition, meeting the demands of traction power supply; compared with the existing power supply scheme, the new-type cable traction power supply scheme has obvious economic benefits. |
| Key words: electric railroads power supply mode of cable electrical parameters current distribution rules resistance characteristics scheme design economic analysis power quality06 |
