Centrifugal cascade intermediate frequency parallel power supply

Abstract

The invention belongs to the technical field of power supplies, in particular to a centrifugal cascade intermediate frequency parallel power supply. The centrifugal cascade medium-frequency parallel power supply comprises a plurality of parallel power supplies, wherein the power supplies comprise a power cabinet, an adapter cabinet, a dense parallel bus bar and a load cabinet; the input power supply of the power cabinet is a three-phase power frequency mains power, and two paths of intermediate frequency power supplies are output to the adapter cabinet; the two paths of output of the adapter cabinet are respectively in T connection with a busbar T in the dense parallel busbar; the two paths of input of the load cabinet are respectively in T connection with the busbar in the dense parallelbusbar; adjacent dense parallel busbars are in butt joint with their own connectors. The load cabinet outputs one path to a motor group load; an adjacent power cabinet uses a CAN bus for real-time communication. The invention ensures the safe, stable and reliable operation of the system, further optimizes the structure of the intermediate frequency power supply system, realizes the non-power-off switching, can flexibly configure the power supply capacity, can meet the design of centrifugal factories of different cascade forms and scales, improves the automation degree of the intermediate frequency power supply system, and simplifies the management of the factories.

Description

Technical field [0001] The invention belongs to the technical field of power supplies, and specifically relates to a centrifugal cascade intermediate frequency parallel power supply. Background technique [0002] Centrifugal enrichment technology has become the best choice for applications in the nuclear fuel industry due to its low energy consumption and no overhaul. The uranium enrichment production line requires a stable three-phase 380V / 1600Hz power supply, and the intermediate frequency power supply is the key equipment for powering the uranium enrichment production line. [0003] With the continuous progress of my country's centrifuge design and production technology, the centrifuge power has been gradually increased. The centrifugal cascade structure adopts a modular and deep design to increase the power supply of the section. The uranium enrichment production line puts forward higher requirements on the capacity, performance, reliability and economy of the intermediate fre...

AI Technical Summary

Problems solved by technology

The deficiencies of the existing intermediate frequency power supply system are becoming more and more obvious, which are mainly reflected in six aspects: First, the power of the new centrifuge is increased by 30%, and the system capacity density is increased. The current power supply can no longer meet the start-up and operation requirements of the new centrifuge

Second, the internal power switching device of the power supply is bulky, the space layout margin is too sufficient, and the power density is only 23kW / m 3 , large footprint, long cable laying, large voltage drop, and high loss

Third, in order to take into account the centrifuge's start-up cycle and economical operation requirements, the rated output power of the power supply is quite different from the actual output power, and the utilization rate of the power supply capacity is low

Fourth, when the system fails, the power supply cannot be switched automatically according to the load power and operating conditions, which is highly dependent on human resources and skills, the recovery operation is complicated, and the system intelligence level is low

Sixth, the system investment cost is mainly determined by the output power of the power supply and the number of equipment. Increasing the number of equipment and the amount of investment in exchange for power supply redundancy of the system will increase the system investment.

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