Intelligent Distribution Transformer Terminal

It is applicable to 10kV distribution transformer station area, and can realize the functions of power supply information collection, equipment condition monitoring, communication networking, local analysis and decision-making, master station communication and collaborative calculation in distribution transformer station area.

Product Overview

Guided by the strategic goal of building an international leading energy Internet with Chinese characteristics, and in line with the trend of integration and development of energy revolution and digital revolution, State Grid Corporation proposed an architecture system distribution of  Internet of Things based on "cloud-management-edge-end". Among them, 10kV distribution transformer station area is an important direction for the construction of distribution Internet of Things. Intelligent distribution transformer terminal is the core "edge" layer equipment in the distribution Internet of Things architecture. As secondary equipment integrating the functions of power supply information collection, equipment status monitoring and communication networking, local analysis and decision-making, master station communication and collaborative computing in the distribution transformer station area, it has the architecture of platform hardware design and distributed edge computing, and supports the realization and flexible expansion of service functions in a software-defined way. 

Product advantages

  • 01

    The intelligent distribution transformer terminal is connected to the IoT management platform in the upstream, and to the intelligent terminal equipment of the distribution transformer station area, in the downstream, forming a "cloud-management-edge-end" distribution network IoT architecture from top to bottom

  • 02

    It integrates edge computing architecture, which supports local data storage and decision analysis

  • 03

    Hardware platformization. Uplink communication and downlink communication are encapsulated in replaceable communication modules to adapt to the upgrading of communication technology. Hardware interface and pin definition are unified, and hardware driver function interface is unified for software to realize software and hardware decoupling

  • 04

    The Software APP is based on lightweight Linux container technology, supports flexible deployment of various APPs, and has more flexible service response and implementation capabilities

  • 05

    It supports power line carrier, micro-power wireless, carrier/micro-power dual-mode communication, and also supports Ethernet, RS485, RS232 and wireless communication (wireless public network, wireless private network and public-private integration)

  • 06

    High-density super capacitor is used, which can ensure more than 3 minutes of normal working time after power failure

  • 07

    Following the modular, scalable, low power consumption and maintenance-free design standards, it can adapt to complex operating environment, and has high reliability and stability

Technical parameters

Technical parameters of PRS-3381 intelligent distribution transformer terminal 

Operating temperature 

－40℃～+70℃

Relative humidity 

10%～100%

Altitude 

0 ~ 4000m 

Operating power supply 

AC220V

CPU 

700MHz, multi-core 

Memory 

>512MB
FLASH>1GB

Time keeping 

The error is no more than 2s every 24 hours

Measuring range 

Voltage: 176~264V; Current: 0~6A; Frequency: 45Hz~55Hz 

Measurement accuracy 

Voltage and current: level 0.5 

Frequency: 0.01Hz 

Active power: level 0.5 

Reactive power, apparent power, power factor, electrical quantity: level 1

Communication interface

1x remote communication module, 1x HPLC/micro-power local communication module 

2x RS-485, 2x RS-232/RS-485 switchable serial port, 2x Ethernet channel 

Communication protocol

Support DL/T634.5104, DL/T634.5101, DL/T 645

DL/T 698.45, Q/GDW 1376.1, Q/GDW 1376.2, Modbus, etc. 

Average power consumption 

<20VA

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