增容变压器投切技术安全控制策略研究

Study on Safety Control Strategy of Capacitor Transformer Cutting

变压器投切作为有载增容的关键环节,其动作的安全稳定影响着供电可靠性。然而投切过程伴随着操作过电压等现象,若这些现象不能被妥善处理,不仅无法保障供电,还会引起保护跳闸误动作等消极影响。此外,若配电变压器和增容变压器的相位或相序不同,则会造成巨大的破坏电流,导致电力设备损坏,增加投切过程的潜在危险。核相作为变压器并联前的关键步骤,值得深入探究。

As the key link of load capacity increase,the safety and stability affect the reliability of power supply.However,the drop and cutting process is accompanied by negative phenomena such as operating overvoltage.If these phenomena cannot be properly handled,they will not only not guarantee power supply,but also cause negative effects such as false protection and tripping.In addition,if the phase or phase order of the distribution transformer and the capacitor transformer is different,it will cause a huge destructive current,resulting in damage to the power equipment and increase the potential danger of the cutting process.As a key step before the parallel transformer,the nuclear phase is worth the deep exploration.