Station service power switching method and device of power distribution system

• Main Authors: LIU WANG, MAN WENCHENG, ZHOU XIAOXIANG, ZHAO XINJIANG, TIAN SHAOXIN
• Format: Patent
• Language: Chinese; English
• Published: 18.11.2022
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses an auxiliary power switching method and device for a power distribution system, and relates to the technical field of power distribution systems. Parallel switching and series switching are carried out through redesign of a station service switching circuit, bus normal switching and accident/abnormal switching of three paths of power supplies (a working power supply, a standby power supply and an emergency power supply) are realized completely, and a grid-connected function of voltage regulation and frequency modulation of the emergency power supply is realized. The function of switching the working power supply, the standby power supply and the emergency power supply in pairs can be realized, and the flexibility and the safety of auxiliary power supply of the power distribution system are improved. 本发明公开了一种配电系统厂用电切换方法及装置，涉及配电系统技术领域。通过对厂用电切换电路的重新设计进行并联切换和串联切换，具有完整的三路电源(工作电源、备用电源、应急电源)的母线正常切换以及事故/不正常切换，且具备对应急电源的调压、调频的并网功能。能够实现工作电源、备用电源和应急电源的两两互相切换功能，提高了配电系统厂用电的灵活性和安全性。