Overview
IEC 60870-6-802:1997 is an international standard published by the International Electrotechnical Commission (IEC) that specifies telecontrol equipment and systems protocols compatible with ISO standards and ITU-T recommendations. This particular section, Section 802: TASE.2 Object Models, defines a method for exchanging time-critical control center data over wide-area and local-area networks using a fully ISO-compliant protocol stack. The standard supports both centralized and distributed telecontrol architectures, enabling efficient, reliable communication in supervisory control and data acquisition (SCADA) systems.
The importance of IEC 60870-6-802 lies in its detailed object models that serve as the foundation for interoperable telecontrol protocols. This ensures seamless communication between control centers and field devices, improving operational effectiveness and reliability in electrical power systems and other critical infrastructure.
Key Topics
- TASE.2 Object Models: Defines hierarchical object models such as IndicationPoint, ControlPoint, Protection Equipment Event, TransferAccount, and DeviceOutage which represent different elements of telecontrol systems.
- SCADA Integration: Detailed models for supervisory control and data acquisition, including mechanisms to represent signals, commands, protection status, and event handling.
- Transfer Accounts: Object definitions for managing data transfer accounting, transmission segments, and profile values to ensure accurate and traceable data exchange.
- Power Plant Objects: Models covering availability reports, real-time status, forecast schedules, curves, and power system dynamics to support power generation management.
- Mapping to MMS Types: Specification of correspondence between object models and Manufacturing Message Specification (MMS) data types for standardized communication.
- Distributed Architectures: Provisions supporting both centralized and distributed telecontrol systems ensure flexibility and scalability in network design.
- Use of ISO and ITU-T Standards: Compliance with international OTC (open telecontrol) standards and recommendations guarantees global interoperability.
Applications
- Electrical Power Systems: Implementation in electrical substations and control centers for reliable telemetry, remote control, and data acquisition.
- Grid Management: Enhances situational awareness and decision-making in power grid operations with timely and accurate data exchange.
- Critical Infrastructure Monitoring: Suitable for managing infrastructure that requires real-time supervision, status updates, and command issuance.
- Energy Management Systems: Facilitate integration with energy resource planning, forecasting, and dynamic system analysis.
- Telecommunication Networks: Utilization in wide-area network (WAN) and local-area network (LAN) environments for secure and efficient remote management.
Related Standards
- IEC 60870-6: Broader series covering telecontrol protocols compatible with ISO and ITU-T.
- ISO 9506 (MMS): Manufacturing Message Specification standard upon which the IEC 60870-6-802 object models map for protocol communication.
- IEC 60050: International Electrotechnical Vocabulary providing terminology relevant to telecontrol and electrical systems.
- ITU-T Recommendations: Telecommunication standards used for aligning telecontrol protocols.
- IEC 60417 and IEC 60617: Standards defining graphical symbols and diagrams used in related telecontrol documentation.
Summary
IEC 60870-6-802:1997 establishes a comprehensive framework for telecontrol object models, enabling standardized, ISO-compliant data exchange for control systems in critical infrastructure. Its detailed modeling of supervisory control points, protection events, transfer accounts, and power plant data allows utilities and system integrators to implement interoperable and scalable SCADA applications. By adopting this standard, organizations ensure robust, real-time communication across telecontrol networks essential for modern energy management and infrastructure resilience.
Keywords: IEC 60870-6-802, TASE.2, telecontrol protocols, SCADA systems, ISO-compliant telecontrol, control center data exchange, transfer accounts, MMS data types, distributed telecontrol architecture, electrical power systems standard.