Overview
China Three Gorges Corporation Group (CTGCG) is China’s largest clean energy organization and a global leader in wind, solar, and hydropower. To push the boundaries of energy innovation, CTGCG launched a massive 100MWh electrochemical energy storage system.
The goal was to create a cutting-edge cloud-edge collaborative platform. This system integrates situational awareness with self-regulated decentralized control, ensuring the reliability and safety of large-scale battery storage: a task that required a more adaptive and innovative IoT solution than traditional infrastructure could provide.
The Challenge
Managing an energy storage system of this magnitude presented significant technical and economic hurdles:
- Massive Data Scale: The system needed to manage a total of one million data points with high collection frequency.
- Critical Latency Requirements: To ensure safety and cooperative control, the response time had to be kept under 500 milliseconds.
- High Operational Costs: Lack of real-time insights led to high maintenance expenses and shortened battery lifespans.
- Reliability Gaps: Traditional centralized management struggled with the "short-board effect," where the failure of one component could compromise the entire system's efficiency.
The Solution
CTGCG implemented an integrated IoT infrastructure using the EMQ product stack to bridge the gap between edge devices and cloud intelligence.
1. Edge Data Acquisition (EMQX Neuron)
CTGCG utilized EMQX Neuron to parse complex industrial data into MQTT protocols.
- A single Neuron node supports over 3,000 data points.
- Multiple instances can be deployed within a gateway, acting like "flexible toll booths" that expand to handle traffic congestion without bottlenecks.
2. High-Performance Edge Messaging (NanoMQ & eKuiper)
To handle the intense flow of IoT traffic at the edge:
- NanoMQ served as the lightweight edge broker, requiring only 200MB of memory to handle over 800,000 messages per second.
- eKuiper provided edge computing units to process raw data locally before sending it to the central database, reducing the load on the cloud.
3. Centralized Control and Rule Engine (EMQX Enterprise)
At the core, EMQX Enterprise established a high-availability cluster:
- Supported 500,000 to 1,000,000 routes on a single server node.
- Used the Rule Engine for data cleaning, decoding, and format conversion, ensuring that the right data reached the right destination for faster verification and security.
The Results
The transition from manual, centralized operations to an autonomous, IoT-energized platform delivered immediate and substantial benefits:
- Battery Life Capacity: Increased by 15%
- O&M Costs: Reduced by more than 30%
- System Security: Significantly improved via real-time intelligent diagnosis
- Operational Mode: Shifted to unmanned, remote real-time control
By decentralizing management and incorporating early-warning algorithms, CTGCG eliminated reliance on archaic manual operations. This collaboration has not only extended the life of their assets but also set a new benchmark for the burgeoning clean energy industry.