IEC 60870-6-701:1998

Overview

IEC 60870-6-701:1998 is an international standard by the IEC, focusing on telecontrol equipment and systems. As part of the IEC 60870-6 series, this standard specifies the functional profile for providing the TASE.1 (Telecontrol Application Service Element 1) application service in end systems, particularly between two control center end systems.

The TASE.1 protocol facilitates secure and reliable communication for supervisory control and data acquisition (SCADA) as well as other telecontrol applications within electrical power systems. The IEC 60870-6-701 standard ensures these communications are compatible with internationally recognized ISO standards and ITU-T recommendations. This standard is especially relevant in the context of evolving Smart Grid technologies that demand robust, interoperable communications between distributed control centers.

Key Topics

• Functional Profile for TASE.1: Defines a profile that ensures interoperability and standardized communication between two control center end systems using the TASE.1 application service.
• Integration with International Standards: Ensures compatibility with ISO and ITU-T recommendations for open systems interconnection (OSI), supporting international harmonization of telecontrol protocols.
• Protocol Stack: Specifies requirements for the entire protocol stack, including application (TASE.1), presentation, and session layers, with references to relevant ISO/IEC standards.
• Conformance Requirements: Details the conformance testing framework using standardized Protocol Implementation Conformance Statement (PICS), helping manufacturers and utilities validate protocol support.
• Focus on Connection-Oriented Services: The TASE.1 profile operates only in connection-oriented mode, interfacing with standard session and presentation protocols to assure reliable data exchange.

Applications

IEC 60870-6-701:1998 is widely applied in the domain of electric power system automation and SCADA systems for the following use cases:

• Control Center Interoperability: Facilitates seamless exchange of telecontrol data between different vendors' systems within and between utilities.
• Smart Grid Communications: Supports the development of interoperable, secure, and scalable communication systems for next-generation power grids.
• Cross-Vendor Integration: Enables electric utilities to implement solutions from multiple suppliers while maintaining standards-based compatibility.
• Grid Modernization Projects: Acts as a technical foundation for initiatives that require robust data integration and remote control across large-scale electrical networks.

This functional profile is essential for ensuring that TASE.1-based communications are implemented uniformly, reducing the risks of incompatibility and supporting long-term maintainability of power system communication infrastructures.

Related Standards

IEC 60870-6-701 functions within a broader framework of IEC and ISO/IEC standards:

• IEC 60870-6-501: Specifies the TASE.1 protocol itself, which is applied at the application layer.
• IEC 60870-6-502: Provides definitions and specifications for TASE.1 protocol implementation.
• ISO/IEC 8326 & 8327: Define the session layer protocols required for reliable OSI communication.
• ISO/IEC 8822 & 8823: Specify presentation layer service and protocols for connection-oriented systems.
• ISO/IEC 8649 & 8650: Detail the Association Control Service Element (ACSE) essential for establishing connections between systems.
• ISO/IEC 9072-2: Outlines protocols for remote operations services.

Adhering to IEC 60870-6-701:1998 alongside these related standards ensures a comprehensive approach to telecontrol protocol standardization, supporting scalable and interoperable smart grid solutions.

Keywords: IEC 60870-6-701, TASE.1, telecontrol protocol, control center communication, smart grid, IEC standards, ISO compatibility, ITU-T, SCADA, interoperability, power system automation, protocol conformance, OSI stack.