2) Why is there a power quality problem?
1. Changes in electrical load structure
Such as the widespread use of power electronics technology, the popularity of household appliances, the large number of distributed power supplies, the development of high-speed railways, etc., due to its nonlinearity, impact and unbalanced power characteristics caused by the deterioration of power quality. The most important thing is the large number of non-linear equipment. Note: A non-linear load is the load that contains the rectifying device. In electronic circuits, voltage and current are not linear.
2. The equipment is more and more sensitive
The popularity of computers, the development of IT industry, the application of microelectronic control technology, production automation, scale, and refinement have led to higher and higher requirements for power quality and power supply stability, and the problems faced are becoming more and more severe.
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