Harmonic control of medium frequency furnace
The user's main load is an medium frequencyfurnace for smelting, which mainly produces castings such as motor casings. A 400kVA, 10kV/0.4kV transformer is used for power supply. 1. According to the actual measurement on site, the actual electricity consumption of users is as follows: under no-load conditions, the voltage on the user side is 250V; under full load, the voltage on the user side is 235V; under full load, the electrical power used is 600kW; under full load, the electrical power used is The factor is 0.97 ahead; when operating at full load, the current consumption is 910A. 2. Harmonic control equipment, using the medium frequency furnace harmonic control of Science and Technology Electric for harmonic control. Its main technical indicators are: the maximum compensation current can be 400A; the rated voltage is 200/380V; the effective output power is 100kVA; the DC side bus voltage is 450VDC; the switching frequency is 10kHz. For the power quality before and after ...