ローカルからショートへ: ガスリレーはどのようにして変圧器の内部故障を正確に特定できるか? (エンジニアリング事例分析を添付)

1.ガスリレーが「障害言語翻訳装置」と呼ばれる理由’

変圧器動作時, すべての内部障害が「最初に話します」’ – through gas and oil flow.
The value of gas relays lies in:

Transform invisible physical changes into executable electrical signals.

2.Correspondence between internal fault types and gas characteristics

This is also why gas relays are often used in conjunction with DGA (Dissolved Gas Analysis).

3.Detailed explanation of gas relays alarm and trip logic

3.1 Alarm Stage

Slow accumulation of gas
The float slowly sinks
Contact closure → Send alarm
Operations personnel can conduct inspections and plan power outages

3.2 Trip Stage

Sudden increase in oil flow velocity
Instantaneous deflection of baffle
Trip circuit closed
Circuit breaker action, protecting equipment

4.Engineering case analysis (real-life scenarios)

Case 1: Partial discharge not taken seriously

Alarm signal appears
Failure to timely sample and analyze
Interturn short circuit occurs after 3 months
Economic losses have increased fivefold

Gas relay alarm is not a “false alarm”, but a “warning”.

Case 2: Oil flow tripping to avoid explosion

Internal short circuit
Instantaneous tripping of gas relays
The pressure has not reached the burst threshold
The transformer casing is intact

ガスリレー

5.Common misconceptions and technical misjudgments

Alarm not processed
Installation tilt causes misoperation
Residual air in pipelines
Neglecting regular testing

6.New trend: Intelligent gas relay

New directions that have emerged in recent years include:

• Electronic oil flow sensor
• Digital measurement of gas volume
• Remote monitoring interface
• Linkage with SCADA/EMS system

7.Key technical terms in export and bidding documents

Common requirements for overseas projects:

• Dual contact output
• seismic performance
• Long life micro switch
• Third party type testing

8.まとめ

Gas relays are not complicated, but they understand the internal language of transformers.
The correct selection, installation, and attention to alarm information often determine the “upper limit of life” of a transformer.

Luoyang Datang Energy Technology Co., Ltd. Rを統合したハイテク企業です&D, 変圧器などの電力機器の製造・供給, 新しいエネルギー成分, 配電盤とインバータ. 技術革新を核に, 私たちは、世界中の顧客にサービスを提供するために、高信頼性と高性能の電源ソリューションの開発に注力しています。. 厳格な品質管理システムと国際規格認証を取得しています。, これからも優れた製品を世に送り出し、お客様の安全・安定した電力システムの構築をお手伝いします.