Causes Of Voltage Transient Changes In The Operation Of Static Voltage Stabilizers

static automatic voltage regulator uses semiconductor devices (such as IGBTs, MOSFETs, etc.) to respond to voltage fluctuations, and unlike traditional mechanical regulation methods, its adjustment action is based on fast electronic switching control.

Voltage transients in the power system itself often originate from external power grid disturbances and drastic changes in load-side conditions. For example, unstable power grid quality, transmission line faults, or the start-up and shutdown of high-power equipment can cause instantaneous voltage spikes or drops. These transient processes, where voltage deviates from the nominal value, can last for tens of milliseconds, during which the voltage level fluctuates between different frequencies and phases.

When such a transient voltage event is transmitted to the static stabilizer manufacturers input terminal, the internal detection module will provide an input voltage deviation judgment. When the input grid voltage exceeds the allowable range of the device, the power electronic converter bridge inside the static voltage stabilizer for home attempts to quickly compensate for or reduce the fluctuation. However, under certain conditions of extremely high waveform frequency and extreme amplitude change, there may be a time or phase mismatch between the adjustment action and the grid disturbance. This short-term asynchrony will manifest as transient voltage fluctuation at the output.