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Kumkratug, Prechanon

doi:10.3844/ajassp.2010.1504.1508

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…FACTS controllers are capable of controlling the network condition in a very fast manner and this unique feature of FACTS can be exploited to improve the stability of a power system (Panda, 2010;Kumkratug, 2010). The detailed explanations about the FACTS controllers are well documented in the literature.…”

Section: Introductionmentioning

confidence: 93%

Fuzzy Logic Controller for Static Synchronous Series Compensator with Energy Storage System for Transient Stability Analysis

Padma¹

2011

Journal of Computer Science

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Problem statement: FACTS devices play a major role in the efficient operation of the complex power system. FACTS devices such as STATCOM, SSSC and IPFC are in increasing usage. With energy storage systems they have a good control over the real as well as reactive power compensation and transient stability improvement. The design of controller for the SSSC with SMES system is analyzed in this study. Approach: The main variables to be controlled in the power system for efficient operation are the voltage, phase angle and impedance. A SSSC is a series connected converter based FACTS control which can provide a series reactive power compensation for a transmission system. With the addition of energy storage device, in addition to the reactive power compensation the real power exchange is also accomplished. Fuzzy logic controller is designed for the efficient operation of the power system with SSSC integrated with energy storage device. From the power reference the current reference is calculated and the error and change in error in the current are calculated in the controller. Results: A three phase to ground fault is simulated in the test system. A comparative analysis of the PI and fuzzy logic control of SSSC with energy storage system for the rotor angle oscillation damping following the disturbance is done. Conclusion: The fuzzy logic controller works efficiently compared to the conventional PI controller for the SSSC with SMES system. Also with energy storage system in the FACTS devices, the efficient operation of the power system is possible.

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Section: Introductionmentioning

confidence: 93%

Fuzzy Logic Controller for Static Synchronous Series Compensator with Energy Storage System for Transient Stability Analysis

Padma¹

2011

Journal of Computer Science

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“…Base on the finding on (Kumkratug, 2010) we will make some modifications of the standard proof of NPcompleteness of COVERING SET, that able to establish the NP-completeness of the DCS even when restricted to bipartite graphs.…”

Section: Question: Does G Have a Dcs Of Size At Most K?mentioning

confidence: 99%

“…The consumption of electricity is increasing every year. The electric power industries have to monitor carefully their system's state periodically as defined by a set of state variables (Ramos and Tahan, 2009;Kumkratug, 2010;Osuwa and Igwiro, 2010). One method of monitoring these variables is to place Electrical Sensor Unit (ESU) in some various selected locations in the system (Ahmadia et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Disjoint Sets in Graphs and its Application to Electrical Networks

Gaol¹

2011

Journal of Mathematics and Statistics

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Problem statement: One of the well known problems in Telecommunication and Electrical Power System is how to put Electrical Sensor Unit (ESU) in some various selected locations in the system. Approach: This problem was modeled as the vertex covering problems in graphs. The graph modeling of this problem as the minimum vertex covering set problem. Results: The degree covering set of a graph for every vertex is covered by the set minimum cardinality. The minimu of a graph cardinality of a degree covering set of a graph G is the degree covering number γP(G). Conclusion: We show that Degree Covering Set (DCS) problem is NP-complete. In this study, we also give a linear algorithm to solve the DCS for trees. In addition, we investigate theoretical properties of γP (T) in trees T.

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Optimal Coordinated Design of Multiple Damping Controllers Based on PSS and UPFC Device to Improve Dynamic Stability in the Power System

Hussain

Malek

Rashid

et al. 2013

Mathematical Problems in Engineering

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Unified Power Flow Controller (UPFC) device is applied to control power flow in transmission lines. Supplementary damping controller can be installed on any control channel of the UPFC inputs to implement the task of Power Oscillation Damping (POD) controller. In this paper, we have presented the simultaneous coordinated design of the multiple damping controllers between Power System Stabilizer (PSS) and UPFC-based POD or between different multiple UPFC-based POD controllers without PSS in a singlemachine infinite-bus power system in order to identify the design that provided the most effective damping performance. The parameters of the damping controllers are optimized utilizing a Chaotic Particle Swarm Optimization (CPSO) algorithm based on eigenvalue objective function. The simulation results show that the coordinated design of the multiple damping controllers has high ability in damping oscillations compared to the individual damping controllers. Furthermore, the coordinated design of UPFC-based POD controllers demonstrates the superiority over the coordinated design of PSS and UPFC-based POD controllers for enhancing greatly the stability of the power system.

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Untitled

Cited by 4 publications

References 9 publications

Fuzzy Logic Controller for Static Synchronous Series Compensator with Energy Storage System for Transient Stability Analysis

Fuzzy Logic Controller for Static Synchronous Series Compensator with Energy Storage System for Transient Stability Analysis

Disjoint Sets in Graphs and its Application to Electrical Networks

Optimal Coordinated Design of Multiple Damping Controllers Based on PSS and UPFC Device to Improve Dynamic Stability in the Power System

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