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Work item:
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L.HESS-AIDC
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Subject/title:
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General Requirements for Hybrid energy storage for AI data centers
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Status:
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Under study
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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New
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Equivalent number:
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-
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Timing:
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2028-06 (Medium priority)
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Liaison:
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IEC TC8, ISO/IEC JTC 1 SC39
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Supporting members:
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China Unicom, China Telecom, China Mobile, ZTE, CAICT，State Grid Corporation of China, Huawei Technologies
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Summary:
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This Recommendation specifies general requirements for Hybrid Energy Storage Systems (HESS) deployed in AI computing centres (AIDCs). It addresses the unique challenges posed by GPU-driven workloads, including millisecond-level power transients, high-frequency micro-cycling, and the competing demands of transient response, power fluctuation smoothing, and long-duration backup.
The Recommendation establishes requirements for HESS scheduling in AIDC, covering: power allocation and capacity dispatch based on load power spectral density; coordination with AI workload schedulers for pre-charging and carbon-aware operation; grid interaction management including harmonic compensation, islanding detection, seamless transition, and fault ride-through; state-of-charge and lifecycle management with active micro-cycle suppression; frequency decomposition for multi-timescale power allocation; virtual inertia and damping control using the high-power layer; dynamic backup capacity reservation; and PCS coordination for stable multi-layer operation.
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Comment:
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-
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Reference(s):
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Historic references:
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Contact(s):
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First registration in the WP:
2026-07-01 11:02:35
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Last update:
2026-07-01 11:09:45
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