The thyristor harmonic elimination circuit is fast and reliable. Because the intelligent microcomputer harmonic elimination device uses thyristor instantaneous conduction for harmonic elimination, the requirement of eliminating ferroresonance of voltage transformer on parallel resistance is fundamentally solved. Because the voltage drop of high-power thyristor is only below 1V after instantaneous conduction, it can fully meet the requirements of several voltage transformers operating in parallel and eliminating resonance when fractional frequency resonance occurs.

The microcomputer harmonic elimination device works quickly, the diagnosis time is 20 ~ 60 ms, and the resonance can be eliminated within 10 ~ 80 ms, which will not damage the thermal stability of voltage transformer and other electrical equipment. Since the device is in the blocking state in normal operation, the measurement accuracy of the voltage transformer will not be affected, and the burden of the voltage transformer will not be increased, and the steady-state current in the auxiliary winding of the voltage transformer will not be formed.

In the past, the microcomputer harmonic elimination device used relay as the main component of harmonic elimination, but it is easy to produce instantaneous current in the process of operation, and the external performance feature is spark. You can imagine how serious it is to produce sparks. On the contrary, thyristor is another kind of high safety performance, which will not produce instantaneous current, high power, non-contact harmonic elimination element.

Compared with relay and thyristor has more advantages, so our company as a professional manufacturer of microcomputer harmonic elimination device, strictly control high quality in the production link.