Overview
IEC 60870-6-802:2002 (with Amendment 1:2005) is an international standard published by the International Electrotechnical Commission (IEC). This standard specifies protocols for telecontrol equipment and systems, focusing on TASE.2 Object Models. It provides a comprehensive method for exchanging time-critical control centre data over wide-area and local-area networks using a fully ISO-compliant protocol stack. The standard supports both centralized and distributed architectures and is integral to modern Smart Grid applications.
The document details abstract object models-such as indication points, control points, and scheduling entities-to ensure interoperability in critical applications like energy management, scheduling, and accounting. Using the TASE.2 (Telecontrol Application Service Element 2) layer, it outlines how various types of real-time utility data are modeled, exchanged, and managed.
Key Topics
- Time-Critical Data Exchange: Guidelines for the transfer of real-time data indications and control operations in control centre environments.
- TASE.2 Object Models: Includes detailed object models for supervisory control and data acquisition (SCADA), scheduling, accounting, device outage, and event notifications.
- ISO and ITU-T Compliance: Protocols are fully compatible with ISO standards (e.g., ISO 9506 MMS) and ITU-T recommendations, enabling broad interoperability.
- Centralized and Distributed Architectures: Supports both topologies for enhanced flexibility in utility network design.
- Attributes and Quality Assessment: Object models encompass data validity, source, timestamping, and change tracking to ensure accurate and trustworthy information exchange.
Major Object Models
- IndicationPoint and ControlPoint Objects: Core to SCADA systems, representing input (status) and output (control) data, respectively, alongside metadata such as quality, timestamps, and change counters.
- Protection Equipment Events: Models for handling and exchanging data from protective relay operations, including status, trip events, and timing information.
- Transfer Accounts: Data models for scheduling and accounting, enabling periodic exchange and management of utility transactions, such as energy transfer schedules.
Applications
IEC 60870-6-802 is widely deployed within:
- Smart Grid Infrastructure: Facilitating reliable communication between energy control centers, grid operators, and distributed energy resources.
- SCADA Systems: Central to exchange of secure, high-integrity data driving automated control and remote monitoring in electricity networks.
- Energy Market Operations: Object models support complex scheduling, accounting, and settlement scenarios necessary for modern energy trading and load management.
- Protection and Automation: Enables timely notification and decision-making based on real-time status and events from protection equipment.
- Interoperability: By utilizing open standards, utilities and vendors achieve seamless integration between devices and systems from different manufacturers.
Related Standards
For comprehensive telecontrol systems and to ensure correct application of IEC 60870-6-802, the following related standards are indispensable:
- IEC 60870-6-503: Telecontrol protocols - TASE.2 services and protocol (foundation for TASE.2 object models and services)
- IEC 60870-5-101: Transmission protocols - Companion standard for basic telecontrol tasks
- ISO 9506-1/2: Industrial automation systems - Manufacturing Message Specification (MMS), which forms the protocol layer for data exchange
- Other documents within the IEC 60870 series, which address additional specifics of telecontrol communications
IEC 60870-6-802 ensures robust, standardized, and interoperable communication for mission-critical utility and Smart Grid operations worldwide through structured object models and protocol compliance. Utilities and vendors implementing this standard position themselves for scalable, secure, and future-ready energy control systems.
