Battery Energy Storage Systems (BESS) in solar power plants play a critical role to ensure energy continuity, increase grid stability and optimize the energy supply-demand balance. However, the integration of BESS at grid scale is dependent on many technical, regulatory and operational factors in today’s world where SPPs with Storage (SPES) have started to enter our lives. In Turkey, this integration process is carried out within the framework of technical specifications and standards set by various institutions, primarily TEİAŞ and TEDAŞ.
Technical Requirements for Integration of BESS into the Grid
In order to successfully integrate BESS into the grid, the following technical requirements must be met:
- Grid Connection Standards: IEC 62933 series and compliance with the connection criteria set by TEİAŞ in Turkey.
- Frequency and Voltage Regulation: The BESS should have the function of stabilizing the grid frequency and providing voltage regulation.
- Island Mode Operation: During grid outages, the BESS should be able to supply critical loads when necessary by operating in isolation.
- Reactive Power Management: Active and reactive power should be controlled to improve power quality.
- SCADA and Remote Monitoring: Compliance with the data collection and remote monitoring standards set by TEİAŞ must be ensured.
TEDAŞ and TEİAŞ Standards and Specifications for BESS in Turkey
The regulatory framework for energy storage systems in Turkey is based on technical specifications and standards set by TEİAŞ and TEDAŞ:
- TEIAS Technical Specifications:
- The technical criteria to be met for the connection of BESS to the Turkish electricity transmission system have been determined.
- Voltage and frequency tolerances and limits to be observed for system safety are clearly defined.
- Grid connection and operation requirements for energy storage systems are specified.
- MONITORING and CONTROL OF ELECTRICITY STORAGE FACILITIES Below
- You can find the PDF document published by TEİAŞ titled “PROCEDURES and PRINCIPLES REGARDING THE EDUCATION”.
- TEDAŞ Distribution System Standards:
- How the BESS should operate at medium and low voltage levels is defined.
- Smart grid integration and its impacts on the distribution system are evaluated.
- Below you can find the file titled GRID CONNECTION and COMPATIBILITY CRITERIA OF ELECTRICITY STORAGE FACILITIES published by TEİAŞ.
Grid Support Services: Frequency Regulation and Reactive Power Management
BESS plays a critical role in network support services:
- Frequency Regulation: Provides fast response mechanisms that balance active power to keep the grid frequency at nominal level.
- Reactive Power Support: Improves power quality in the grid by contributing to voltage regulation.
- Peak Load Balancing: Reduces the load on the grid by providing energy during hours of high electricity demand.
- Island Mode Operation: It can meet the energy needs of a specific region independent of the grid.
Electrical Storage Units Test Procedures
You can find the detailed document on the test procedures of the storage systems to be used in the DGES below.
Licensing, Incentives and Investment Processes
Investment processes for energy storage systems in Turkey are supported by licensing processes and incentive mechanisms determined by the Energy Market Regulatory Authority (EMRA):
- Licensing Process:
- The pre-license and license processes granted by EMRA for BESS investments have been determined.
- Legal obligations for BESS projects integrated into power generation plants.
- Incentives and Supports:
- Government incentives for energy storage systems integrated with renewable energy sources.
- Supports offered by TEİAŞ for BESS investments in the balancing market.
Conclusion
Grid integration of BESS requires a comprehensive process in terms of compliance with technical standards, regulatory frameworks and market mechanisms. While the standards set by TEDAŞ and TEİAŞ in Turkey ensure that energy storage systems can be safely and efficiently connected to the grid, international regulations and market dynamics shape the future of energy storage investments. Proper planning, technology selection and compliance with regulatory requirements will strengthen the role of BESS in energy markets.
You can contact us at [email protected] for your engineering needs regarding your GES with Storage (DGES) power plants that you are planning to build.