IEC TS 62898-3-2:2024
Microgrids - Part 3-2: Technical requirements - Energy management systems
- Standard No.
- IEC TS 62898-3-2:2024
- Release Date
- 2024
- Published By
- International Electrotechnical Commission (IEC) IX / IEC
- Latest
- IEC TS 62898-3-2:2024
- Introduction
Background of Standard Development and Technical Evolution
As a key form of distributed energy integration, the microgrid energy management system (MEMS) is the core ensuring the economic and reliable operation of microgrids. IEC TS 62898-3-2 is the specification within the IEC 62898 series regarding technical requirements for microgrid energy management systems, aiming to unify the functional architecture, communication protocols, and optimization methods of MEMS. Based on best practices from multiple demonstration projects worldwide (such as Goldwind in China, Hachinohe in Japan, and the Qatar Desert Microgrid, etc.), this standard provides comprehensive technical guidance ranging from system architecture to functional modules.
System Architecture and Functional Mapping
The standard divides microgrid operation control into three layers: the Energy Management Layer (MEMS), the Monitoring and Control Layer (MMCS), and the Protection and Dynamic Control Layer. MEMS primarily implements long-timescale energy management functions, such as power generation forecasting, economic dispatch, and demand-side management. For small-scale microgrids, MEMS and MMCS can be integrated into a single microgrid controller. Recommended communication protocols include the IEC 61850 series, IEC 60870-5-104, and DNP3, while cybersecurity must comply with the IEC 62443 series.
Comparison of MEMS Functional Architecture
Functional Module Description Time Scale Scheduling Optimization Multi-objective optimization including economic efficiency, environmental friendliness, and renewable energy utilization Day-ahead, intra-day, real-time Forecasting Functions Photovoltaic/wind power generation forecasting, load forecasting, electricity price forecasting Ultra-short-term (15min-6h), short-term (1-3 days) Demand-side Integration Demand-side management, demand response, energy efficiency optimization, power exchange with the upper grid Intra-day, real-time Flexible Resource Management Controllable load management and energy storage management (SOC/SOH monitoring) Real-time
Detailed Explanation of Scheduling Optimization Models
Scheduling optimization is the core of MEMS, covering day-ahead economic optimization dispatch, intra-day economic dispatch, and real-time dispatch adjustment. Optimization objectives include economic efficiency (operating costs, market revenue), environmental friendliness (CO₂ emission reduction), power quality/reliability, and maximum utilization of renewable energy. The standard specifies various constraints: generator output limits, system operation constraints (such as power balance, power flow control), and robustness constraints (renewable energy randomness). Optimization methods include mixed-integer programming, model predictive control (MPC), neural networks, etc.
Practical Application Case: Goldwind Microgrid
The Beijing Goldwind Smart Park Microgrid (commissioned in 2012) includes 4.8MW wind power, 1MW photovoltaic, micro-turbines, and energy storage. MEMS achieves day-ahead and intra-day optimization, utilizing the energy storage system (EES) for peak shaving and valley filling. In grid-connected mode, it optimizes charging and discharging based on real-time electricity prices; in islanded mode, it ensures power supply for critical loads, comprehensively reducing energy costs and emissions.
Implementation Recommendations
- Conduct Demand Analysis First: Select MEMS functional modules based on the microgrid application (grid-connected/islanded), referencing the IEC TS 62898-1 planning guidelines.
- Communication and Cybersecurity: Adopt IEC 61850 or DNP3 protocols, and ensure security levels of SL2 and above in accordance with the IEC 62443 series.
- Improve Forecasting Accuracy: Integrate meteorological data with historical data, and adopt combined algorithms (e.g., deep learning + physical models) to enhance short-term forecasting precision.
- Multi-objective Optimization Trade-offs: Set weighting coefficients based on project priorities (economy-first or reliability-first) and dynamically switch modes during operation.
IEC TS 62898-3-2:2024 Referenced Document
- IEC 61850-8-1 Communication networks and systems for power utility automation - Part 8-1: Specific communication service mapping (SCSM) - Mappings to MMS (ISO 9506-1 and ISO 9506-2) and to ISO/IEC 8802-3
- IEC 61850-8-2 Communication networks and systems for power utility automation - Part 8-2: Specific communication service mapping (SCSM) - Mapping to Extensible Messaging Presence Protocol (XMPP)
- IEC 61970-1:2005 Energy management system application program interface (EMS-API) - Part 1: Guidelines and general requirements
- IEC 62351 Power systems management and associated information exchange - Data and communications security - ALL PARTS*， 2026-02-13 Update
- IEC 62443-3-3 Industrial communication networks - Network and system security - Part 3-3: System security requirements and security levels; Corrigendum 1
- IEC 62443-4-2 Corrigendum 1 - Security for industrial automation and control systems - Part 4-2: Technical security requirements for IACS components
- IEC TR 61850-90-1 Communication networks and systems for power utility automation - Part 90-1: Use of IEC 61850 for the communication between substations
- IEC TR 61850-90-2 Communication networks and systems for power utility automation - Part 90-2: Using IEC 61850 for communication between substations and control centres
- IEC TS 60364-8-3 Low-voltage electrical installations - Part 8-3 : Functional aspects - Operation of prosumer’s electrical installations
- IEC TS 62898-1 Microgrids - Part 1: Guidelines for microgrid projects planning and specification*， 2026-07-12 Update
- IEC TS 62898-2 Microgrids - Part 2: Guidelines for operation*， 2026-07-12 Update
- IEC TS 62898-3-1 Microgrids - Part 3-1: Technical requirements - Protection and dynamic control*， 2026-07-12 Update
- IEC TS 62898-3-4:2023 Microgrids - Part 3-4: Technical requirements - Microgrid monitoring and control systems
- IEEE Std 1815-2012 IEEE Standard for Electric Power Systems Communications-Distributed Network Protocol (DNP3) - Redline
IEC TS 62898-3-2:2024 history
- 2024 IEC TS 62898-3-2:2024 Microgrids - Part 3-2: Technical requirements - Energy management systems
