Equipment for compensating wattless power of electric arc furnace

Abstract

The equipment includes primary winding, secondary winding of transformer, reactive power componsator of electric arc furnace, current transformer, potential transformer and test controller for reactive power, and especially, the secondary self coupled winding. The secondary self-coupled winding formed by adding part of winding to original winding at secondary side of transformer of electric arc furnace provides suitable operational voltage and current for reactive power componsator. The componsator connected to ends of coil out a', b', c' can compensate reactive power consumption of furnace as well as zero load reactive loss Qo and short circuit reactive loss Qk in operation of transformer. Thus, voltage of ends of coil out at low voltage side of transformer is stable. The equipment is a feasible reactive power compensator.

Description

1. Technical field [0001] The electric arc furnace reactive power compensation device disclosed by the invention belongs to the technical field of electric power equipment. The device is a practical electric arc furnace non-electrical arc furnace capable of compensating the short-circuit reactance and system reactance of the electric arc furnace transformer and maintaining the voltage at the outlet end of the low-voltage side of the electric arc furnace transformer basically unchanged. Work power compensation device. 2. Background technology [0002] According to the capacity of the electric arc furnace transformer, the high-voltage side voltage is usually 10.5KV, 35KV, 110KV, 220KV, etc., and the low-voltage side voltage is usually in the range of 40V to 800V. The voltage on the high-voltage side and low-voltage side of the electric arc furnace transformer is almost proportional to the capacity of the electric arc furnace transformer. For reactive power compensation of the...

AI Technical Summary

Problems solved by technology

The reactive power compensator can be self-saturated reactance type SVC, thyristor phase-controlled reactance type (TCR) SVC, thyristor group switching capacitor group type (TSC) SVC, etc. The main disadvantage is that SVC can compensate the upstream reactance of the high voltage side of the electric arc furnace transformer. , to maintain the voltage of the high-voltage side bus bar of the electric arc furnace transformer basically unchanged, the compensation effect is not great, and the cost is high, so it is difficult to implement in practice

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