Grid-connected Power Station Solution
The 500MWh energy storage project in Illinois, USA, consists of 300 10-foot battery container BESS units and 150 20-foot 1725kWh ATEPS boost conversion units, designed to provide fast frequency regulation services in the PJM market. This project highlights the advantages of efficient energy storage technology in large-scale applications, offering stable and rapid response capabilities to support a greener power grid.
Project Overview
Available Only Through Renon Power
Power Market Analysis
The Core Driver of Grid Balance
The PJM market, where Illinois is located, is one of the largest power markets in North America, covering 13 states and Washington, D.C., and serving over 65 million people. With the increasing adoption of renewable energy and fluctuating power demand, the need for rapid frequency regulation services in the PJM market has grown significantly. Advanced energy storage technologies have become essential in meeting this challenge by quickly responding to grid frequency deviations, ensuring the stability and reliability of power supply.
Energy Storage System Introduction
Fast Response, Balanced Grid Stability
This energy storage system is a high-voltage grid-connected frequency regulation system designed to meet both primary and secondary frequency regulation needs. Frequency regulation is a critical component of stable power system operation, ensuring that grid frequency remains stable to balance supply and demand. With its rapid response capability and high flexibility, the energy storage system is the ideal solution for achieving frequency regulation, providing strong support for the smooth operation of the power grid and contributing to a more efficient and reliable energy network.
Project Introduction
Stabilizing the Grid, Securing the Future of Energy
Due to the supply-demand imbalance between the grid and load, frequency regulation is essential for maintaining grid stability. The ESS in prefabricated containers provided by Renon works seamlessly with ATEPS-designed storage control systems, featuring integrated rapid frequency response and interfacing with external aggregators to enable additional grid support functions. This innovative solution ensures stable grid operation in a dynamic environment, safeguarding the future of green energy.
Rapid Response, Stable Grid Control
Efficient Frequency Regulation, Stable Power Use
This system excels in frequency regulation and grid support, with rapid frequency response capabilities that adjust active power within 2 seconds to correct supply-demand imbalances and assist in managing power system frequency, significantly enhancing power stability. The plug-and-play design ensures simplicity and ease of use, with on-site battery installation completed within a day and system commissioning within three days, allowing for quick deployment and immediate grid stabilization support.
Efficient Frequency Regulation and Precision Control
Smart Control, Ensuring Grid Stability
Power Adjustment:
Primary frequency regulation involves a rapid response; when a drop in grid frequency is detected, the energy storage system releases power, and when a rise in frequency is detected, it absorbs power. Secondary frequency regulation is typically managed by the dispatch center through Automatic Generation Control (AGC), where the energy storage system performs charging and discharging based on dispatch commands.
Command Execution:
The control system sends commands to the energy storage equipment, adjusting its output or charging power. These commands can be continuous power adjustments or time-based schedules, ensuring stable grid operation.
Status Monitoring and Feedback:
The system continuously monitors the status of the energy storage, including state of charge (SOC), temperature, and other parameters to ensure safe operation. Real-time data feedback allows for dynamic adjustment of control strategies to adapt to changing system conditions, maintaining efficient and reliable power system performance.
A Game-Changing Energy Storage Solution
Rapid Response, Smart Control, Redefining the Future of Power
This advanced energy storage system brings significant changes to the local power environment through rapid frequency response, precise regulation control, and intelligent command execution. It quickly balances supply-demand mismatches, enhances grid frequency stability, and reduces risks associated with power fluctuations. With its plug-and-play design and efficient system commissioning, the storage units can be swiftly deployed, offering flexible regulation capabilities and real-time status feedback to the grid. This system not only improves operational efficiency and reliability but also provides stable energy support for market participants, driving the region towards a greener and more sustainable energy future.
Core Component Selection
Available Only Through Renon Power
Battery System Selection
Selection: 300 units with 1.67MWh battery capacity each.
Rationale: The selection of 1.67MWh capacity per unit was based on the specific on-site requirements of the frequency regulation project, incorporating redundancy into the system design.
Benefits: This configuration addresses the project’s frequency regulation needs while enhancing overall system reliability and flexibility.
Advantage: The 1.67MWh capacity per unit ensures stable and continuous operation, improving the performance and resilience of the entire system.
PCS Power Configuration
Selection: 150 units of 1725kW PCS boost conversion integrated cabinets.
Rationale: The PCS units were chosen for their ability to switch between grid-connected and off-grid modes, following EMS dispatch commands to perform primary and secondary frequency regulation. They work with SVG to achieve AVC, provide islanding protection, handle high and low voltage ride-through, black start capabilities, and connect to the high-voltage grid with integrated transformers.
Benefits: This configuration supports comprehensive grid stabilization features, enhancing the system’s adaptability and responsiveness to grid demands.
Advantage: The 1725kW PCS units improve the system s flexibility and reliability, ensuring smooth operation across various grid conditions while maximizing overall performance.
Equipped with internal liquid cooling units, the system maintains battery temperatures within optimal ranges, even in extreme high-temperature environments, preventing performance degradation and safety risks associated with overheating.
Intelligent Battery Management System (BMS)
The BMS monitors the health of the batteries, including voltage, current, and temperature parameters, ensuring optimal performance and extending battery life. Advanced algorithms predict battery aging trends, providing early warnings to facilitate maintenance planning.
Integrated Energy Storage Containers
Each container is equipped with lithium iron phosphate batteries, integrated power conversion systems, fire suppression, liquid cooling units, and other balance-of-plant components. The containers are designed with built-in redundancy, allowing for full-load operation and reliable 24 7 performance to meet various daily cycling demands.
System Advantages
High Performance and Longevity
Featuring high-quality battery cells combined with intelligent BMS and thermal management technology, the system significantly enhances battery cycle life and energy density, reducing the total cost of ownership (TCO).
Multi-Mode Operation
Beyond conventional energy storage and emergency backup functions, the system seamlessly integrates with photovoltaic panels and diesel generators, allowing for flexible switching between multiple energy sources to enhance the stability of energy supply.
Advanced Fire Suppression System
The system utilizes state-of-the-art perfluorohexanone fire suppression technology, which releases extinguishing agents in an extremely short time to quickly control fire sources, protecting the batteries from fire damage.
