Fired Power Station Solution
In Momba, South Australia, a combined heat and power (CHP) with energy storage system, rated at 10MW with a 20MW power capability, is implemented. By participating in AGC frequency regulation, the system reduces peak-shaving costs for coal-fired power plants, enhances operational efficiency, minimizes equipment wear, extends equipment lifespan, and improves operational reliability.
Project Overview
Available Only Through Renon Power
Australia Energy Storage Project
Challenges for Coal-Fired Power Plants in Addressing Intermittent Renewable Energy
Coal-fired power plants located in Momba, South Australia, face challenges due to the intermittent nature of renewable energy, requiring rapid power adjustments to stabilize grid frequency. They must also address increased peak-shaving costs and equipment wear. Although combined heat and power (CHP) with energy storage helps reduce peak-shaving costs and extend equipment life, further improvements in flexibility and responsiveness are needed to meet grid frequency regulation demands.
Peak Shaving and Valley Filling
Smart Energy Storage Balances Supply and Demand
By storing energy during periods of low demand and releasing it during peak periods, this approach alleviates pressure on the grid during peak loads. It helps smooth the output of coal-fired power plants, reducing power fluctuations caused by load changes. Additionally, it can serve as backup capacity, providing rapid response capability to address sudden grid emergencies.
Automatic Generation Control and Fast Frequency Response
Reduce peak-shaving costs for coal-fired power plants and improve operational efficiency.
Automatic Generation Control (AGC) with energy storage systems allows coal-fired power plants to respond more quickly to AGC commands, improving frequency regulation. The storage system rapidly adjusts the plant s power output to correct grid frequency deviations and maintains stability.
Modular Storage and Boost Converter System
The Core of Optimized Energy Management
The system features 12 units of 1.67MWh batteries and 4 units of 3.45MW PCS with integrated converter and booster functions, supporting grid connection and disconnection. It responds to EMS commands for primary and secondary frequency regulation and integrates with SVG for AVC, islanding protection, and black start capabilities. With high-voltage grid integration and a “one-to-many” design, it enhances storage utilization, provides millisecond-level power adjustments, and minimizes frequency regulation errors to boost plant performance.
EMS with Predictive Capabilities
Predict, Manage, and Optimize
The intelligent energy management system coordinates the operation of photovoltaics.energy storage, and diesel generators to delive refficient and stable power supply
Enhancing Coal-Fired Power Plant Efficiency
Extending Equipment Life and Improving Operational Efficiency with Energy Storage Systems
Energy storage systems for coal-fired power plants extend equipment life by reducing the need for frequent load changes and minimizing stress on machinery. This decrease in operational wear contributes to a longer lifespan for plant equipment. Additionally, these systems enhance overall operational efficiency by optimizing power output and reducing reliance on inefficient peaking units, leading to a more streamlined and cost-effective operation.
Core Component Selection
Renon Power Specialization
Battery Capacity
Selection: 12 units with 1.67MWh battery capacity each.
Rationale: The 1.67MWh capacity per unit was chosen based on the specific requirements of the frequency regulation project, incorporating redundancy into the design.
Benefits: This capacity meets the on-site frequency regulation demands while enhancing system reliability and flexibility.
Advantage: The 1.67MWh capacity per unit ensures stable and continuous operation, boosting overall system performance and resilience.
PCS Power Configuration
The PCS consists of 4 units of 3.45MW integrated converter and booster systems, with capabilities for grid connection and disconnection. It responds to EMS scheduling commands, supports primary and secondary frequency regulation, and integrates with SVG for AVC, islanding protection, high and low voltage ride-through, and black start capabilities. It includes a transformer for high-voltage grid integration.
Each container is equipped with lithium iron phosphate batteries, an integrated power conversion system, fire suppression, liquid cooling units, and other facility balance devices. The design includes built-in redundancy, allowing for full-load operation and efficient handling of rigorous 24 7 demands.
Intelligent Battery Management System (BMS):
The BMS monitors battery health, including voltage, current, and temperature, ensuring optimal performance and extended battery life. Advanced algorithms predict battery aging trends and provide early warnings for maintenance.
Integrated Thermal Management:
The system includes a high-efficiency liquid cooling unit to maintain battery temperatures within a safe range, even in extreme summer conditions, preventing overheating and associated risks.
System Advantages
Improved Battery Performance and Cost Reduction:
Utilizing high-quality battery cells, intelligent BMS, and advanced thermal management technologies significantly enhances battery cycle life and energy density, reducing the total cost of ownership (TCO).
Increased Energy Flexibility:
In addition to standard energy storage and emergency backup functions, the system seamlessly integrates with photovoltaic panels and diesel generators, allowing for flexible switching between different energy sources and enhancing energy supply stability.
Enhanced Safety Assurance:
The system features high-sensitivity smoke detectors and a perfluoroketone fire suppression system that responds quickly to any abnormalities, protecting the battery from fire damage and providing comprehensive safety protection.
