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The fuzzy control theory is applied on reactive voltage control. With voltage and reactive power deviation as its input, and the transformer tap and capacitor switching as its output, MATLAB Fuzzy Logic Toolbox are used to form the fuzzy inference system. NanYi substation in JiangXi is an example. In the TH2100 software simulation, the results show that the control system is stable and reliable, the...
A design example of voltage and reactive power fuzzy logic controller for 110 kV substation based on MATLAB is done in this paper. 56 fuzzy control rules are extracted on the basis of nine-area diagram divided the area of prior switching of capacitors. MATLAB fuzzy logic toolbox is used to build fuzzy logic controller's fuzzy inference system and MATLAB SimPowerSystems Blockset is used to set up a...
Aiming at the existing problems of conventional substation voltage and reactive power integrated control method, a new fuzzy logic based dynamic reactive power boundary voltage and reactive power integrated control method is proposed. Fuzzy logic control rules, membership function, dynamic reactive power boundary and system structure are introduced. In accordance with this fuzzy logic control strategies,...
This paper presents the optimal dispatch for the under load tap changer (ULTC) of a substation transformer, substation capacitors, and feeder capacitors for volt/VAr control in a distribution system. Three objectives of interest in the problem consist of energy loss, total capacitor kVAr to be switched on, and total number of daily switching operations of the ULTC and all capacitors. The optimization...
In this paper, with analyzing the existing questions of conventional nine-area voltage and reactive power integrated control method, a new fuzzy control logic based dynamic reactive power boundary substation voltage and reactive power integrated control method is proposed. The fuzzy logic control strategies of this method can finish the decoupling control of voltage and reactive power in tight coupled...
Based on analyzing the status and existing questions of voltage and reactive power integrated control for substations, this paper presents a new voltage and reactive power control system based on fuzzy logic and dynamic borderline applying fuzzy control theory. Simulation tests and practical running have proved that this approach can reduce the adjust times of transformer tap and capacitor effectively...
Based on analyzing the status and existing questions of voltage and reactive power integrated control for substations, this paper presents a new voltage and reactive power control system based on fuzzy logic and dynamic borderline applying fuzzy control theory. Simulation tests and practical running have proved that this approach can reduce the adjust times of transformer tap and capacitor effectively...
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