上海轨道交通崇明线过江段区间供配电系统关键技术研究

魏昕

Key Technologies of Shanghai Rail Transit Chongming Line Rivercrossing Interval Power Supply and Distribution System

WEI Xin
摘要:
目的:为解决上海轨道交通崇明线过江段存在的区间动力照明设备供电距离远、土建条件受限等工程难点,需对其区间供配电方案作针对性分析和研究。方法:提出了采用35 kV/6 kV/04 kV二级降压供电方式,同时对区间变电所的设备选型与布置、接地装置设计、继电保护和电力监控数据传输等关键技术问题进行了重点分析。结果及结论:在该区间中设置6 kV中压网络及6 kV /04 kV区间变电所的设计方案,并对该方案配套的电气主接线方式、主要设备选型、区间变电所接地装置设计、6 kV系统继电保护配置、变电所综合自动化系统数据上传等关键技术问题进行了深入研究。结果表明,该方案可有效解决上海轨道交通崇明线特长区间内动力照明设备的供电问题。
Abstracts:
Objective: To address the engineering challenges faced by Shanghai Rail Transit Chongming Line rivercrossing interval, such as the long distance between the interval power lighting equipment, and the limited civil engineering conditions, a targeted analysis and study of interval power supply and distribution scheme is required.Method: A twostage voltage reduction power supply method of 35 kV/6 kV/0.4 kV is proposed, and key technical issues such as equipment model selection and layout, grounding device design, relay protection, and power monitoring data transmission for the interval substation are analyzed emphatically.Result and Conclusion: A design scheme for setting a 6 kV mediumvoltage network and a 6 kV/0.4 kV interval substation in the interval is proposed, key technical issues such as electrical main wiring, main equipment model selection, interval substation grounding device design, 6 kV system relay protection configuration, and data upload for substation comprehensive automation system are thoroughly studied. Results show that this scheme can effectively solve the power supply problem for the power lighting equipment in this superlong interval of Shanghai Rail Transit Chongming Line.
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