In collaboration with the energy solutions provider SchneiTec, Huawei Digital Power Technologies Co., Ltd has commissioned a grid-forming energy storage system in Cambodia. The recently completed 12-MWh energy storage project includes a 2-MWh test field for validating Huawei’s smart string grid-forming energy storage system (ESS) technology. According to Huawei, the TÜV SÜD-certified system is the first grid-forming ESS plant in Cambodia. TÜV SÜD tested the system’s inertia response, high/low voltage transition, frequency support and overload performance.
- Grid-forming inertia: Huawei’s grid-forming technology demonstrated exceptional inertia response performance, achieving an inertia time constant (Tj) range of 3–20 seconds — well beyond the standard requirement of 3–12 seconds — enabling faster grid stabilization.
- Low/high voltage ride-through: The system effectively managed voltage fluctuations, maintaining grid stability during short-term voltage dips and surges. It remained operational across a wide voltage range from 5 per cent to 130 per cent of the rated grid voltage.
- Overload and frequency support: The grid-forming ESS operated stably and reliably under short-term overload conditions of up to 300%, and effectively suppressed low-frequency oscillations across the 0.2Hz–5Hz range.
- Black start: The technology enabled rapid black start capability under load, enabling efficient grid restoration following a complete outage.
According to the company, the independent review of Huawei’s grid-forming ESS technology is the first complete on-site validation of the system abroad in accordance with international standards, including IEC, China National Standards, UK Grid Code and German VDE standards.
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