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Fuzzy PI controllers based on particle swarm optimization (PSO) are proposed for four-area interconnected automatic generation control (AGC) system in deregulate environment in this paper. Two kinds of obvious nonlinearities, valve position limits and generation rate constraint (GRC), were concerned. Fuzzy control rules are determined through approved PSO algorithm which avoids falling in local optimum...
Since deregulation of power industry and wide use of network, there are a lot of new problems in automatic generation control (AGC) system. One is the nonlinearity of the valve position limits. The other is random time delay and data dropouts of the communication network. These factors lead to longer settling time and larger overshoot, even frequency deviation of power system. Therefore, to keep system...
A novel fuzzy logic controller based on T-S model is proposed for automatic generation control (AGC) system after deregulation. In this paper, the traditional AGC is modified to take into account the effect of the nonlinearity and bilateral contracts on the dynamics, since the restructured AGC system is now exposed to sudden, larger changes and the bilateral contracts are concerned. The generation...
A novel fuzzy logic controller based on T-S model is proposed for automatic generation control (AGC) system after deregulation. Since the AGC system is now exposed to sudden, larger changes introduced by deregulation policy, the nonlinearity must be concerned. In this paper, the generation rate constraint (GRC) is firstly constructed in T-S model to design the fuzzy logic controller, while the valve...
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