Protection device for dry-type transformer

The microcomputer protection device for dry-type transformers is an economical protection system that integrates measurement, control, protection, and communication; Tailored for the high-voltage distribution room of the distribution network terminal, with three-stage undirected current protection as the core, equipped with monitoring and acquisition functions of power grid parameters, which can eliminate traditional ammeters, voltmeters, power meters, frequency meters, kilowatt hour meters, etc., and can remotely transmit measurement data and protection information to the upper computer through the communication port, facilitating the automation of the distribution network; The device integrates a backup power supply self switching function based on the characteristics of the distribution network power supply, which can flexibly realize the functions of incoming line backup switching and mother branch backup switching.
The microcomputer protection device for dry-type transformers adopts internationally advanced DSP and surface mount technology, as well as flexible fieldbus (CAN) technology, to meet the requirements of different voltage levels in substations and achieve coordination, digitization, and intelligence of substations. This series of products can complete functions such as protection, measurement, control, regulation, signal, fault recording, electric degree acquisition, low current grounding line selection, and low cycle load shedding for substations, making the technical requirements, functions, and internal wiring of the products more standardized. The product adopts a distributed protection and measurement device, which can be installed in a centralized or decentralized manner, and can also be configured arbitrarily according to user needs to meet different scheme requirements.