一种地铁长距离水泵升降压优化配电方案  

An Optimized Distribution Scheme of Voltage Step-up and Step-down for Long-distance Water Pumps in Metro

作　　者：廖振宁 纪焕聪 赖胜杰 王泽青 夏成军[2,3] Liao Zhenning;Ji Huancong;Lai Shengjie;Wang Zeqing;Xia Chengjun(Guangzhou Metro Design and Research Institute Co.,Ltd.,Guangzhou Guangdong 510010,China;South China University of Technology,Guangzhou Guangdong 510640,China;Key Laboratory of Guangdong New Energy Power System Operation and Control,Guangzhou Guangdong 510663,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广东广州510010 [2]华南理工大学,广东广州510640 [3]广东省新能源电力系统运行与控制企业重点实验室,广东广州510663

出　　处：《电气自动化》2022年第3期14-16,21,共4页Electrical Automation

摘　　要：为解决某工程地铁长距离水泵常规配电方案工程造价高的问题,提出一种升降压优化配电方案,通过提高线路电压等级,降低电压损耗。首先,分析方案的各项电压指标;然后,针对线路末端单相接地故障,进行线路保护整定及开关灵敏度校验;最后,基于PSCAD/EMTDC软件搭建升降压配电方案模型。仿真结果表明,方案能够显著降低所需电缆截面,同时验证了方案的有效性及经济性。对我国其他地铁线路配电设计具有一定的参考价值。In order to solve the problem of the high cost of the conventional power distribution scheme for the long-distance water pump of a certain project, a voltage step-up and step-down optimized power distribution scheme was proposed, which reduces the voltage loss by increasing the line voltage level. The outline of the program was as follows: firstly, the voltage indexes of the scheme were analyzed;then, aiming at the single-phase grounding fault at the end of the line, the line protection setting and switching sensitivity verification were carried out;finally, based on PSCAD/EMTDC software, the scheme model of up-down voltage distribution was built. The simulation results show that the scheme can significantly reduce the required cable cross-section, and verify the effectiveness and economy of the scheme. It has certain reference value for the power distribution design of other subway lines in our country.

关 键 词：地铁 长距离配电 升降压配电方案 短路电流 PSCAD/EMTDC软件 

分 类 号：TM721.1[电气工程—电力系统及自动化]