广州中心城区低压配电网典型接线模式

Typical Connection Mode for Low Voltage Power Distribution Network in Guangzhou Central City

针对当前低压配电网普遍采用放射式接线方式,一旦配电网发生故障、检修或工程改造将出现配电变压器停电而低压负荷无法转供的问题,提出适合中心城区低压配电网的几种联络型典型接线模式,并明确了其构筑方法。从应用范围、转供电能力、成本、操作安全性等方面对不同接线模式进行对比分析。实际推广及应用效果验证表明,因地制宜、合理选用接线方式,优化低压配电网网架,对供电可靠性提升具有显著效果。

Low voltage distribution network generally uses emanant connection mode at present. Aiming at the problem of failure in low voltage load transfer caused by distribution transformer power cut due to fault, overhaul or engineering reform of the power distribution network, several kinds of contact type typical connection modes suitable for low voltage power dis- tribution network in central city were proposed and relevant construction methods were confirmed. In aspects of application ranges, power transfer abilities, costs and operation securities, comparison analysis was carried out on different connection modes. Practical effects of popularization and application verified and proved that it was able to obviously improve power supply reliability by reasonably selecting connection mode according to local conditions and optimizing network frame of the low voltage power distribution network.