10kV配电变压器保护配置方式的合理选择

The Reasonable Allocation Choices of Protection for 10kV Distribution Transformer

10 kV配电变压器的保护配置主要有断路器、负荷开关或负荷开关加熔断器等。负荷开关投资省,但不能开断短路电流,很少采用;断路器技术性能好,但设备投资较高,使用复杂,广泛应用不现实;负荷开关加熔断器组合的保护配置方式,既可避免采用操作复杂、价格昂贵的断路器,弥补负荷开关不能开断短路电流的缺点,又可满足实际运行的需要,该配置可作为配电变压器的保护方式,值得大力推广。

Protection configuration of 10KV distribution transformer is Breaker,load switches or load switches with Fuse. Load Switches need Less investment, but it can＇ t cut Short - circuit current, so it is rarely used. Breaker has good technical performance, but need Higher investment, ande the use of it is complex too, so Extensive application is unrealistic. The Protection configuration of load switches with Fuse can not only avoid using breaker which is expensive and has complex operating, making up the Shortcomings of load switches can＇ t cut Short - circuit current, but also meet the needing of Actual operation, this configuration can be the Protection configuration of distribution transformer,and it is worth to Promot.