Del local al cortocircuito: ¿Cómo pueden los relés de gas identificar con precisión fallas internas en los transformadores?? (con análisis de casos de ingeniería adjunto)

1.¿Por qué a los relés de gas se les llama “traductores de idiomas defectuosos”?’

Durante la operación del transformador, todas las fallas internas 'hablarán primero’ – through gas and oil flow.
The value of relés de gas 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 relés de gas 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

Relés de gas

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.Resumen

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. es una empresa de alta tecnología que integra R&D, Fabricación y suministro de equipos eléctricos como transformadores., nuevos componentes energéticos, armarios de distribución e inversores. Con la innovación tecnológica como eje, Nos enfocamos en crear soluciones de energía de alta confiabilidad y alto rendimiento para servir a clientes globales.. Con un estricto sistema de control de calidad y certificación de estándares internacionales., Continuamos produciendo productos excelentes y permitimos a los clientes construir sistemas de energía seguros y estables..