Fuzzy optimal capacitor sizing and placement

Ng, H.N.; Salama, M.M.A.

doi:10.1109/ccece.1995.526295

Cited by 21 publications

(3 citation statements)

References 5 publications

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“…A fuzzy variable is modeled by a membership function, which assigns a degree of membership to a set. Ng et al [24,25] applied FST to the capacitor placement problem by using fuzzy approximate reasoning. Chin [23] used FST for the capacitor allocation problem.…”

Section: Fuzzy Set Theorymentioning

confidence: 99%

Optimal Placement and Sizing of Shunt Capacitor Banks in the Presence of Harmonics

Masoum¹,

Fuchs²

2015

Power Quality in Power Systems and Electrical Machines

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Section: Fuzzy Set Theorymentioning

confidence: 99%

Optimal Placement and Sizing of Shunt Capacitor Banks in the Presence of Harmonics

Masoum¹,

Fuchs²

2015

Power Quality in Power Systems and Electrical Machines

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“…In fact, the membership degree is a criterion for assessing the similarity of x compared to the members of global set [18]. In this paper three membership functions are used.…”

Section: Fuzzy Modelingmentioning

confidence: 99%

Optimal voltage control and loss reduction in microgrid by active and reactive power generation

Jangjoo

Seifi

2014

Journal of Intelligent &Amp; Fuzzy Systems

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This study suggests a new algorithm based on a combination of fuzzy logic and genetic algorithm (GA) to improve voltage profile and reduce loss in a microgrid. Considered microgrid includes control variables such as onload tap changer (OLTC), active power output of distributed generators (DG) and reactive power output of feeder switched capacitors that are controlled in a microgrid controller (MGC) through communication links. The proposed method was used to obtain the optimum value of control variables to reduce the loss and improve the voltage profile. The problem formulations consider three distinct objectives related to cost of loss, cost of injected active power by infinity bus and cost of injected active power by DG. The novel formulation is a multi-objective and non-differentiable optimization problem. The control variables were changed base on fuzzy logic and the GA was employed for finding the optimum shape of membership functions. In order to verify the proposed method, a 34 bus microgrid was analyzed in varying load condition and was compared with previous works. Finally it has been tested on 33-buses system to be investigated the control variables status, cost function status and voltage fluctuation during one day. control variables and applied genetic algorithm to finding the optimal values of real power output of DG to improve the voltage profile and reduce the loss. The value of loss depends on penetration of DG in distributed Systems [2]. If this penetration is greater than a particular value, the rate of loss in distribution systems with DG is greater than the rate of that in distributed system without DG. Also the effect of DG with different technology on loss was investigated and it was shown that wind turbine has the worst behavior on real loss. OLTC is an autotransformer that can regulate its secondary voltage by varying the transformer ratio in a specified range. In some reports [3,4] Control variables are DG and OLTC and it was shown that not only the loss is reduced, but also DG capacity is increased by using OLTC. Viawan and Karlsson [5] considered reactive power output from DG (active power output

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“…Power plants for example, prepare for the disaster in the planning stage by designing a more reliable network. Research for reliability planning has developed techniques for determining capacity and location of capacitor banks (Makram et al, 1995;Chin, 1995;Ng and Salama, 1995) and other electric utility distribution elements (El-Khattam et al 2005).…”

Section: Emergency Response Modelsmentioning

confidence: 99%

Pre-positioning of Emergency Supplies for Disaster Response

Rawls

Turnquist

2006

2006 IEEE International Symposium on Technology and Society

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Extreme events such as hurricanes and earthquakes can strike a community with little or no warning and leave high levels of devastation behind. Emergency response providers require large quantities of resource in the aftermath of such events, but these may be limited because of lack of preparation. In order to provide immediate assistance to disaster victims, essential supplies must be strategically placed before the event so they can be accessible after. The main goal of this research is to develop a large-scale emergency response planning tool that determines the location and

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Fuzzy optimal capacitor sizing and placement

Cited by 21 publications

References 5 publications

Optimal Placement and Sizing of Shunt Capacitor Banks in the Presence of Harmonics

Optimal Placement and Sizing of Shunt Capacitor Banks in the Presence of Harmonics

Optimal voltage control and loss reduction in microgrid by active and reactive power generation

Pre-positioning of Emergency Supplies for Disaster Response

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