1. The hazards, causes and types of multi-point ground faults in the transformer core1. The hazards of multi-point ground faults in the coreDuring normal operation of the transformer, the core cannot be grounded at multiple points. During normal operation of the transformer, there is an alternating
Generator excitationThe generator excitation system is the collective name for the power supply and its ancillary equipment that supplies the excitation current of the synchronous generator. It generally consists of two main parts: excitation power unit and excitation regulator.Generator excitation
01 Basic principlesThe relay protection device must have the function of correctly distinguishing whether the protected component is in normal operation or has a fault, and whether it is a fault within the protection zone or a fault outside the zone. To achieve this function, the protection de
Danger of short circuit in power transformer1. Impact of surge current: A sudden short-circuit of the transformer will produce a large short-circuit current. Although the duration is short, this hidden danger may have already formed before the main circuit of the transformer is cut off. After the fo
1. Voltage problemReason: High voltage will cause the transformer to be over-excited and the sound will become louder and sharper, which will directly seriously affect the noise of the transformer.Judgment method: First look at the low-voltage output voltage. Do not look at the voltmeter on the low-
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