DMP211A line protection+check for no voltage and heavy closing

① Product Overview

The DMP-211 microcomputer line protection and measurement device is a comprehensive automation device that integrates protection, remote control, and communication. It has various functions of automation such as protection, telemetry, remote signaling, remote pulse, remote adjustment, remote control, station equipment communication, and dispatch communication. It can achieve control of substations/power plants and achieve few or unmanned operation.

② Specification selection：

DMP21X microcomputer line protection monitoring device

DMP211 Line Protection Monitoring Device

DMP211A line protection+check for no voltage and heavy closing

DMP211B Enhanced Line Protection Monitoring Device

DMP215 microcomputer line transformer protection device

DMP216 Transformer (Used Transformer) Protection Device

DMP231 microcomputer capacitor protection monitoring device

DMP271 microcomputer motor protection monitoring device

DMP204 voltage parallel device

DMP261 backup power self switching device

For details, please inquire ☎ I53 8945 677O

Adopting hierarchical distributed control, various protection and control units, as well as automation control units, are physically and geographically distributed to the primary equipment compartment of the substation. Each unit acts as a complete unit to protect, measure, and control the corresponding compartment of the substation. In terms of hardware and design, each unit is independent of the communication network.

The device adopts a hardware platform based on DSP technology, and the chassis and hardware circuit adopt a plug-in structure with rear plugging, separating strong and weak electricity. The CPU circuit board adopts a 4-layer board with surface mount technology, ensuring the reliability of the device. Each device communicates with the communication device through the fieldbus CAN network or Ethernet, and sends the analog signals, input signals, protection and automation device status, electricity, etc. collected on site to the communication device. At the same time, it receives various query commands, parameter modification commands, remote control execution commands, and operation status check commands from the communication device.

structure
Adopting standard chassis, full panel, back plug-in structure, embedded and rear wiring installation method, strong and weak electrical isolation greatly increases the electrical performance of its product.
plugin
The plugins of this device include CPU plugin, AC and TRIP plugin: among them, the CPU plugin is the core of the device, which is a highly integrated CPU, including the functions of RAM, Flash Memory, AD and other chips; The AC plugin includes power supply and analog signal acquisition; The TRIP plugin includes export, input, and operation circuits.

CPU

1) CPU system
The CPU system consists of microprocessors such as CPU, RAM, ROM, Flash Memory, etc. Including a 64 bit microprocessor CPU, large capacity ROM, RAM, and Flash Memory, this CPU module has * data processing and recording capabilities, which can implement various complex fault handling schemes and record a large amount of fault data. The number of events that can be recorded is not less than 500 times. The protection settings and other operational configuration information are also stored in this memory, and these information will not be lost after the device is powered off.
2) Switching input and output section
The input capacity is divided into internal input and external input. The internal input adopts DC5V input, and the power supply is provided by the device power supply itself. The external input adopts a first stage optocoupler to achieve direct input level of DC220V.
There are two relays used to drive the outlet, one is a trip relay and the other is a closing relay.
3) 通信部分
This plugin contains an RS485 bus network chip with communication speed * and universal interface. The RS485 network is the main communication interface for this device to access the system.
4) Clock circuit
The plugin is equipped with a hardware clock circuit, which uses a high-precision clock chip and is equipped with a battery to maintain stability in case of power failure. In addition, the CPU plugin adopts multi-layer printed boards and surface packaging technology, with a compact appearance and structure, greatly improving the reliability and electromagnetic interference resistance of the device

DMP211A line protection+check for no voltage and heavy closing