What would happen if the IGBT in the static var generator failed?

As the core power component of the Static Var Generator (SVG), the health status of the IGBT module directly determines the operational reliability of the equipment. When these critical semiconductor components fail, a series of chain reactions will occur, affecting the normal operation of the entire reactive power compensation system. So, what happens if the IGBT in the Static Var Generator malfunctions?

Ⅰ . Direct Electrical Performance

1. Abnormal output capacity:

The compensatory capacity suddenly decreased.
Output current waveform distortion
The imbalance of the three-phase output has intensified.

2. Protection system operation:

The overcurrent protection frequently activates.
Equipment malfunction and shutdown
Fault code alarm indication

II. Impact on System Operation

1. Failure of reactive power compensation:

Loss of dynamic response capability
Power factor control malfunction
The voltage fluctuations cannot be suppressed.

2. Harmonic disturbance interruption:

Harmonic filtering function degradation
The pollution level of the power grid has increased.
Sensitive equipment is affected by interference.

III. Equipment Safety Risks

1. Potential risks of the failure to expand:

Short-circuit current threat
Abnormality in the DC bus voltage
Over-stress of associated components

2. Possible secondary damage:

Damage to the driving circuit and its associated components
Overload of the cooling system
The lifespan of the capacitor component is declining.