‌The Power Communication Management Unit Solution‌ is a design and application scheme for communication management units in power systems, aiming to enhance the communication efficiency and stability of power systems. The Communication Management Unit (also known as DPU) features multiple downstream communication interfaces and one or more upstream network interfaces, acting as a front-end processor. It is used to collect and consolidate communication data from all intelligent monitoring/protection devices within a substation and transmit it in real-time to the upper-level master station system, fulfilling functions such as tele-signaling and tele-measurement. Simultaneously, it can receive commands issued by backend machines or DCS and forward them to intelligent series units within the substation to achieve tele-control and tele-adjustment functions‌12.

China's Independently Developed Processor, Zhaoxin ZX-C4500

Power Class 4 Dedicated Machine Compliant with the Chinese Market

Features of the Communication Management Unit

‌Multi-network Functionality‌: Users can configure different communication interface cards based on actual network conditions to form various network structures, such as RS232 full-duplex star network structures, RS485 bus half-duplex bus structures, etc.‌2.
‌Multi-serial Port Functionality‌: The communication management unit can be configured with 1-23 serial ports according to user requirements, suitable for different interface cards‌2.
‌High-performance Embedded Computing Platform‌: Utilizes a high-performance embedded computing platform and real-time database system to ensure data real-time performance and accuracy‌2.
‌Industrial-grade Application Design‌: Employs high-performance industrial-grade wireless modules and 64-bit communication processors, supporting low-power mode and wide power input, suitable for industrial control site applications‌3.
‌Standard and User-friendly‌: Provides standard RS232, RS485, Ethernet, and WIFI interfaces, supporting multiple communication protocols and data transmission‌3.

Typical Application Scenarios

Communication management units are widely used in power demand-side management, industrial energy management, building energy management, photovoltaic monitoring, power operation and maintenance, and other systems. It serves as a data hub between various levels of intelligent devices and the upper-level monitoring center, ensuring real-time data transmission and remote control‌12. For example, in substations and dispatching centers, the communication management unit controls downstream RTU devices through a control platform to collect information such as tele-signals and tele-measurements, and feeds messages back to the dispatching center. After processing and analyzing the messages, administrators execute commands to achieve the goal of remote output of dispatching commands‌2.

‌Key Features of the Communication Management Unit include‌:

‌Data Acquisition and Processing‌: Controls downstream RTU devices through a control platform to achieve the collection and feedback of information such as tele-signals, tele-measurements, and tele-control‌2.
‌Station Monitoring‌: Includes common SCADA functions such as station data acquisition and processing, operation monitoring and alarm recording, human-machine interaction and system maintenance management, calculation and statistics, historical data recording, and Sequence of Events (SOE) recording‌2.
‌Control and Regulation Functions‌: Allows control operations such as opening/closing, engaging/disengaging for controllable devices, and adjusting controls such as raising/lowering, and setpoint configuration for adjustable devices, via the keyboard on the screen display‌2.
‌Fault Recording and Five-Prevention Interlock‌: Features fault recording functionality, enhancing automatic safety and preventing misoperations‌2.

‌Technical Parameters and Standards‌: The communication management unit is compatible with various communication protocols, such as Modbus, IEC101, IEC103, IEC104, DLT645, etc., ensuring reliable operation in demanding industrial environments like power and energy. Furthermore, the product is equipped with network security protection mechanisms to prevent unauthorized access and attacks, ensuring the security of the communication system‌3.

Features

ƒ Zhaoxin ZX-C4500 processor, VX11H chipset

ƒ 6/12 isolated Ethernet ports, 8 serial communication interfaces

ƒ Compatible with 100-240V AC/DC input redundant power supply

ƒ 2 isolated relay outputs

ƒ Storage supports 2x 2.5" SATA HDDs, 1x mSATA

ƒ 1 set of IRIG-B time synchronization

ƒ Programmable indicators

ƒ Trusted Platform Module (TPM)

Specifications

General

ƒ Certifications

CCC, Power Class 4 certification (compatible with IEC-61850-3, IEEE-1613)

ƒ Power Input

Supports redundant power supply

Power 1: 100 ~ 240VAC/DC

Power 2: 100 ~ 240VAC/DC (optional)

ƒ Power Consumption (Typical)

35 W

ƒ Operating System

Windows, Linux

ƒ Dimensions (W x D x H)

440mm (W) x 280mm (D) x 88mm (H)

ƒ Enclosure

SECC & Aluminum

ƒ Weight

6.0 kg

ƒ Mounting

2U Rack Mount

ƒ System Design

Fanless

System Hardware

ƒ Main Controller

Zhaoxin ZX-C4500 processor, 1.67GHz

ƒ Memory

4GB DDR3L (Dual slot, up to 32GB)

ƒ Indicators

Power indicator, programmable indicators, Ethernet (Link LED,

Data LED), Serial port (Rx LED, Tx LED)

ƒ Storage

Supports 2x 2.5" SATA HDDs, 1x mSATA

ƒ Display

VGA (Max resolution 1920 x 1080)

ƒ Watchdog

256-level programmable watchdog timer

1~255 seconds per level

Power loss alarm

ƒ Relay Output

Type C

ƒ Contact

5 A @ 125 V

/5 A @ 30 V

ƒ Channels

Time Synchronization

ƒ Type

IRIG-B (RS-485)

ƒ Channels

ƒ Supported Formats

IRIG-B00X according to IRIG STANDARD 04, 200-98

ƒ Resolution

1 second

I/O Interfaces

ƒ Serial Ports

8x RS-232/485, 2500VDC isolation

ƒ Serial Port Baud Rate

RS-232/485: 50~115.2kbps

ƒ Ethernet Ports

6/12x 10/100/1000M Base-T RJ45 ports

ƒ USB

4x USB 2.0 (3 rear panel, 1 internal)

ƒ Digital Output

2-channel isolated relay output

2000 V

isolation, 200mA Type A

Max switching capacity: 60W, 62.5VA

Max switching voltage: 220VDC/250V

Max switching current: 1A

ƒ Programmable Indicators

Environment

ƒ Operating Temperature

-25~ 65 °C (ECU-466-14SA)

-25~ 55 °C (ECU-466-14SB / ESB)

ƒ Operating Humidity

5 ~ 95% RH (non-condensing)

ƒ Storage Humidity

5 ~ 95% RH (non-condensing)

ƒ Shock Protection

IEC 68 2-27 m-SATA: 30 G half-sine, 11 ms

ƒ Vibration Protection

IEC 68-2-64 (Random 1 Oct./min, 1hr/axis.)

m-SATA: 2Grms @ 5 ~ 500Hz