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What are the main advantages of the IEC 61850 standard?

From: | Author:Wang | Time :2025-05-20 | 63 visit: | Share:

What are the main advantages of the IEC 61850 standard?

The IEC 61850 standard is the core communication standard for intelligent substations and power system automation. Its main advantages are reflected in interoperability, layered architecture, real-time performance, reliability, engineering efficiency, and future scalability, significantly improving the intelligence level and operation efficiency of power systems. The following is a specific analysis of advantages:


Equipment interoperability and standardization

Unified Data Model and Communication Protocol

IEC 61850 adopts object-oriented modeling methods (such as logical nodes LN and data objects DO) to abstract functions such as protection, measurement, and control into standardized data models, breaking down the private protocol barriers of traditional devices. For example, protection relays and measurement devices from different manufacturers can exchange data through a unified GOOSE/SMV protocol, achieving "plug and play" functionality.

Eliminate vendor lock-in

Based on open standard communication interfaces such as MMS and TCP/IP, users can flexibly choose devices from different vendors to build systems, reducing dependence on a single supplier and improving the flexibility and cost-effectiveness of system integration.


Hierarchical distributed architecture

Clear three-tier architecture

Station control layer (SCADA system): Data monitoring and management are achieved through MMS protocol.

Interval layer (protective measurement and control device): Fast tripping command transmission is achieved through GOOSE, and sampling value sharing is achieved through SMV.

Process layer (intelligent terminal, merging unit): Based on IEEE 1588 time synchronization, real-time acquisition and execution of switch and analog quantities are achieved.

Function distribution optimization

Support distributed function configuration, such as anti misoperation locking, backup automatic switching, etc., which can be distributed across different devices at different intervals, and work together through high-speed communication to reduce the complexity of centralized systems.


High speed real-time communication capability

GOOSE Fast Message Mechanism

By adopting multicast communication and event triggering mechanism, the transmission delay can be as low as milliseconds, meeting the requirement of rapid tripping between protection devices (such as differential protection).

Support Heartbeat mechanism and ConfRev configuration version verification to ensure real-time monitoring and data consistency of communication links.

SMV sampling value transmission

Supports the IEC 61850-9-2 LE protocol to transmit current/voltage sampling values at a fixed sampling rate (such as 4000 points/second), replacing traditional cable analog transmission, reducing hardware wiring and improving accuracy.

Combining IEEE 1588 v2 time synchronization, microsecond level synchronization of sampling values across the entire network is achieved, supporting distributed protection and synchronous phasor measurement.


High reliability and redundant design

Network redundancy topology

Support HSR (High Availability Seamless Redundant Ring Network) and PRP (Parallel Redundancy Protocol), which can automatically switch when a single link or device fails, ensuring communication continuity.

The switch supports VLAN partitioning and traffic priority setting (such as GOOSE/SMV priority transmission) to avoid network congestion affecting critical services.

Fault diagnosis and self-healing

Built in communication diagnostic counters (such as GSELPRT1, MMSLPRT1), real-time monitoring of message sending and receiving status, configuration conflicts (such as IP address duplication), and time synchronization errors.

Support "Test Bit" to verify configuration changes without affecting actual operation, reducing debugging risks.


Engineering efficiency and maintenance convenience

Model driven engineering tools

Use SCL (Substation Configuration Language) to uniformly describe the system structure, equipment parameters, and communication connections, and use tools such as PCM600 and IET600 to achieve graphical configuration and batch parameter distribution, reducing manual configuration errors.

Support version management and comparison of configuration files (such as SCD file difference analysis), facilitating engineering changes and version traceability.

Remote operation and diagnosis

Based on web servers and MMS protocol, device parameters, fault recording, and real-time data can be remotely accessed through a browser, reducing on-site maintenance workload.

Support remote firmware upgrade and batch configuration synchronization to shorten the system upgrade cycle.


Support smart grid and future expansion

Facing digital transformation

Support IEC 61850-7-420 extensions (such as new energy access, energy storage system modeling) to meet the integration requirements of distributed energy (DER) and microgrids.

Compatible with the Internet of Things (IoT) and big data analysis, device data is connected to the cloud platform through standardized interfaces, supporting intelligent operation and predictive maintenance.

Protocol scalability

The modular design can flexibly expand new logic nodes (such as electric vehicle charging interface LN) and communication services to meet the future technological evolution (such as 5G, edge computing).


Reduce full lifecycle costs

Reduce hardware investment

Replace traditional secondary cables (such as trip circuits and analog circuits) with network communication to reduce cable procurement, laying, and maintenance costs.

A unified communication platform reduces the use of interface conversion devices (such as protocol converters) and simplifies system architecture.

Improve operational efficiency

Shorten fault location time through standardized fault reporting and event recording (such as SOE sequential event recording).

Support "plug and play" device replacement, new devices can automatically load configuration files, reducing power outage time.

summarize

The IEC 61850 standard solves the protocol barriers and operational challenges of traditional power systems through standardized interoperability, real-time communication, redundant architecture, and efficient engineering tools. It is the foundation of intelligent substations and power IoT. Its advantages are not only reflected in the current integration of automation systems, but also lay the foundation for the digital and intelligent upgrading of future power grids, becoming the mainstream communication standard in the global power industry.

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