Successful parallel trial operation of two transfo

2022-07-24
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The parallel trial operation of two transformers in Fushun Special Steel power plant was successful

for a long time, Fushun Special Steel power plant of Northeast Special Steel Group has been following the principle of safe supply, low cost and high efficiency to promote the operation of Feng Shui electrical equipment. The employees of the factory actively use their brains and think of ways to tap the potential of equipment operation, and the effect of cost reduction and cost saving is obvious. Recently, the power supply workshop of the plant successfully carried out the energy-saving test of parallel operation of two transformers. This not only improves the power factor of power supply equipment, but also achieves the goal of cost reduction and cost saving

No. 3 and No. 4 transformers of main transformer in No. 3 substation are mainly used for the production of No. 1 steelmaking plant. After the transformation in 2011, the operation indicators of the two equipment have not reached the best effect. In this regard, the relevant personnel of the No. 3 substation of the power supply workshop have made a long-term observation on the two transformers and concluded that the operation indicators can meet the standard requirements when the production is at full load, but can not meet the standard requirements when the load is small or the transformer is unloaded. At the same time, it is found that when the two transformers operate in parallel, there is a circulating current phenomenon due to the inconsistency of the secondary voltages of the two transformers, which leads to the over compensation of the power factor. In order to solve the above problems, relevant personnel have made a detailed analysis on how to control power factor and dynamic compensation to avoid over compensation, under compensation and other problems

when the transformer was unloaded, the technicians optimized the operation process of the equipment. They first distributed one of the designed fiberglass fabric structure and multi-layer composite felt transformer to transmit power, and then put the SVC capacitor into operation, and then transmitted power to the other transformer. While realizing the parallel operation of the two transformers, the electrical property changed from capacitive to inductive, This improves the power factor when the load is small or the transformer is unloaded

after observation, the above new operation process eliminated the circulating current phenomenon during the operation of the two transformers, and the test was successful. Next, the power plant will promote the operation process in other substations. According to the regulations of the superior power department, if the power needs to be moved, it should be handled with care for more than 0.95 to reward. After the above new operation process is popularized and used, it is estimated that the power supply workshop can start from one production line by more than 10000 yuan after obtaining the award of 170 from the power bureau throughout the year

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