Concerning the large load fluctuations of transformers in large scale gas-fired power plants,a feedforward fuzzy control strategy is proposed for transformer coolers,in which the cooler groups are switched on/off according to con-trol instructions.The fuzzy control rules are further extracted from the principle of oil-forced air-forced(OFAF)coolers with the purpose to regulate the oil temperature in a feedback way.Moreover,the feedforward control is formed to compensate the disturbances from power of transformer.A simulation model is then constructed in Simulink platform to convince the feasibility and effectiveness of the proposed feedforward fuzzy control strategy.The results in two actuation modes are then compared to show the advantages of cooler group switching control.
关键词
电力变压器/强迫油循环风冷却器/前馈模糊控制/冷却器组开关控制
Key words
power transformer/forced-oil and forced-air coolers/feedforward fuzzy control/cooler group switching control
维普
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