IEC 60870-6-702:1998 PDF

Overview

IEC 60870-6-702:1998 is an international standard that specifies a functional profile for telecontrol protocols compatible with ISO and ITU-T standards. It focuses specifically on providing the TASE.2 (Telecontrol Application Service Element 2) application service within end systems of telecontrol networks. Developed by the International Electrotechnical Commission (IEC) Technical Committee 57, this standard is integral to the interoperability and communication between control center end systems in electric power systems.

This standard is crucial for modern Smart Grid implementations, where secure, reliable, and interoperable telecontrol communications are necessary to manage power system operations effectively. By defining how TASE.2 services, along with OSI connection-mode presentation and session services, should be implemented, IEC 60870-6-702 ensures standardized communication across control centers and facilitates integration with other network technologies.

Key Topics

• TASE.2 Application Service: Defines the service elements used in telecontrol systems to enable exchange of control and monitoring data between control centers.
• Functional Profile (FP): Details the specific implementation guidelines for TASE.2 in end systems, ensuring consistent conformance and interoperability.
• Compatibility with ISO and ITU-T standards: Aligns telecontrol protocols with international communication standards, primarily in the OSI reference model layers, including:
  • Presentation Layer
  • Session Layer
• Conformance Requirements: Outlines precise requirements for TASE.2 services, Manufacturing Message Specification (MMS), and upper layer protocols to ensure compliance.
• ISPICS Prescriptions: Includes detailed normative lists of protocol service prescriptions from the Interoperability Specification for Power Industry Computer Systems (ISPICS).
• Annexes for Future Development and Bibliography: Provides guidance on potential protocol improvements and references to relevant technical literature.

Applications

IEC 60870-6-702 standard plays a vital role in various practical domains within the power industry, particularly:

• Smart Grid Communications: Enables secure and efficient telecontrol communication between electricity transmission and distribution control centers.
• Supervisory Control and Data Acquisition (SCADA) Systems: Facilitates reliable data exchange in control centers managing real-time operational control.
• Inter-Control Center Protocol (ICCP) Deployments: Supports interoperability in systems implementing ICCP, based on TASE.2 services, to exchange data between utilities.
• Power System Automation: Allows standardized remote control, status monitoring, and information exchange across substations and energy management systems.
• Cross-Utility Communication: Provides a framework to connect different utility networks using common international telecontrol protocols.
• Integration with ISO/ITU Standards: Seamlessly interoperates with other networking protocols to support layered communication models in complex power networks.

Related Standards

This standard is part of the IEC 60870 series and closely relates to several other international standards covering telecontrol and power system communications:

• IEC 60870-6: The overall series for telecontrol protocols compatible with ISO and ITU-T standards.
• IEC 60870-5: Covers telecontrol protocols typically used within substations and field devices.
• IEC 61850: Defines communication networks and systems for power utility automation, complementary to IEC 60870-6.
• ISO/IEC 9506 (MMS): Manufacturing Message Specification, used as the underlying protocol in IEC 60870-6-702 for message exchange.
• ITU-T X.200 series: Specifies OSI reference model protocols for presentation and session layers involved in this profile.
• ISPICS Specifications: Industry-specific interoperability specifications referenced within the standard for detailed protocol conformance.

By adhering to IEC 60870-6-702:1998, power utilities and equipment manufacturers ensure secure, reliable, and standardized telecontrol communications essential for the effective operation of modern smart grid systems and electric power networks worldwide.