Data Centres & IT | 国際電力品質のディスカッション·フォーラム

AI データセンターと電力品質 — 系統障害の新しいカテゴリー

デニス / 8 5月 2026

AI training clusters create a load type that did not exist when power quality standards were written: synchronised GPU operation producing oscillatory load signatures with 10+ MW/second ramps, harmonic THD exceeding 5%, and simultaneous UPS disconnection risk of 2+ GW in dense data centre corridors. A real Dominion Energy grid event was triggered by a data centre producing a voltage sag at precisely once per second. Three open-access papers from 2025–2026 document the scale of the problem and the mitigation approaches now being required by grid operators.

アメージングインターナショナル – パッシブ vs. データセンターのアクティブ高調波フィルター: フィールドの比較

デニスRuest / 5 5月 2026

パッシブ vs. active harmonic filter comparison at a New Jersey data centre: active filter failed repeatedly at this site, passive Lineator filter installed on the same VFD loads achieved THID below 5% — well within IEEE 519 — and has operated without failure for years. The case presents measured data from both technologies on the same equipment at the same site.

データセンターは、利用アンコールデマンドレスポンスのパフォーマンスを監視する (Dranetz)

デニス / 29 1月 2013

A 1.2M sq ft New Jersey data centre participating in a demand response program used backup generators to reduce 7 MW of load. Dranetz Encore Series was installed on four 2.5 MW turbines to provide real-time generator performance monitoring — replacing unreliable utility KYZ pulse metering with direct power measurement.

データセンターの試運転ケーススタディ (Dranetz)

デニス / 29 1月 2013

High-reliability facilities invest heavily in UPS systems and generators — but these mitigation devices themselves can fail without obvious alarms. Dranetz continuous power monitoring evaluates UPS health at commissioning and throughout service life, identifying degrading performance before a failure causes the protected equipment to lose supply.