Overview
IEC 60870-6-503:1997 defines the services and protocols for TASE.2 (Telecontrol Application Service Element), internationally recognized as the Inter-Control Centre Communications Protocol (ICCP). This IEC standard specifies standardized methods for the exchange of time-critical real-time data between control centers in the electrical power sector. TASE.2 operates over local and wide area networks, utilizing a full ISO-compliant protocol stack, ensuring interoperability and reliable communications between independent systems in different organizations or geographic areas.
This protocol supports effective and secure data transfer between SCADA (Supervisory Control and Data Acquisition) and EMS (Energy Management System) installations, promoting efficient integration of various power system operators and stakeholders, such as utilities, regional transmission organizations, and energy generators.
Key Topics
- TASE.2 Protocol Fundamentals
- Establishes object-oriented models to represent and communicate control center data.
- Objects include data values, data sets, accounts, devices, programs, events, and conditions.
- Data Exchange Mechanisms
- Facilitates the exchange of real-time values (e.g., measured values, energy accounting, planning data) and operator messages.
- Enables both bilateral agreements and secure access control.
- Network and Application Models
- Defines communication over ISO standard protocol stacks compatible with ITU-T recommendations.
- Details mapping TASE.2 object models onto MMS (Manufacturing Message Specification, ISO/IEC 9506) object models.
- Interoperability Support
- Ensures control centers, regardless of vendor or technology, can reliably share critical operational data.
- Addresses requirements for performance, security, and functional conformance.
Applications
IEC 60870-6-503 plays a pivotal role in the integration of complex, distributed energy systems by standardizing the communication between disparate control centers. Its primary application areas include:
- Energy Utility Control Centers
- Exchange of operational, scheduling, and historical data across utility boundaries or with regional transmission entities.
- Regional Energy Coordination
- Supports inter-utility communications for energy balancing, load management, and contingency operations.
- Generation and Transmission
- Facilitates secure and efficient data communication between generating units, transmission operators, and control centers.
- SCADA/EMS Integration
- Allows seamless integration between different SCADA and energy management systems within or across organizations.
- Industry Automation
- Although primarily intended for power utilities, the protocol serves as a toolkit for real-time data exchange in industries with similar requirements, such as water treatment, manufacturing, and process control.
Related Standards
- IEC 60870-6-702: Application profiles for use with TASE.2.
- IEC 60870-6-802: Identifies standardized objects to be supported in TASE.2 communications.
- ISO/IEC 9506 (MMS): Underpins the TASE.2 service implementation by defining generic messaging and object-oriented communications essential for industrial process control.
- IEC 60870-5 Series: Specifies telecontrol protocols for field equipment and local operations, complementing the control center communication focus of IEC 60870-6-503.
Practical Value
Adopting IEC 60870-6-503 assures reliable interoperability, secure and scalable communications, and future-proof integration across a broad array of control center and energy management platforms. Implementation of this standard meets the rigorous demands of real-time operations in modern energy systems, supporting organizational objectives for efficiency, reliability, and energy market participation.
Keywords: IEC 60870-6-503, TASE.2, ICCP, SCADA, EMS, real-time data exchange, ISO protocol stack, control center interoperability, power system automation, MMS, energy utilities communications, telecontrol standard.