จำนวน Repository ( 136 )

เทคนิคการจัดเรียงสายป้อนและการกำหนดตำแหน่งตัวเก็บประจุในระบบจำหน่ายไฟฟ้าเพื่อทำให้ค่าดัชนีโหลดสมดุลต่ำสุด
เทคนิคการจัดเรียงสายป้อนและการกำหนดตำแหน่งตัวเก็บประจุในระบบจำหน่ายไฟฟ้าเพื่อทำให้ค่าดัชนีโหลดสมดุลต่ำสุด

This paper presents an efficient algorithm for optimization of radial distribution systems by a feeder reconfiguration to balance feeder loads and eliminate overload conditions. The system load-balancing index is used to determine the loading conditions of the system and maximum system loading capacity. The index value has to be minimum in the optimal feeder reconfiguration of load balancing. A method based on Tabu search algorithm The Tabu search algorithm is employed to search for the optimal feeder reconfiguration. Simulation results for a radial 69-bus system with reconfiguration and capacitors placement. The study results show that the distribution system with capacitor placement and optimal on/off patterns of the switches feeders reconfiguration can be load balancing in distribution systems.

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การลดสัญญาณรบกวนคลื่นแม่เหล็กไฟฟ้าจากอุปกรณ์ขับหลอดแอลอีดี
การลดสัญญาณรบกวนคลื่นแม่เหล็กไฟฟ้าจากอุปกรณ์ขับหลอดแอลอีดี

This paper presents the method to reduced electromagnetic interference from electronic drive for LED lamp to achieve the TIS standard No.1955-2551. According to standard it must have been tested for magnetic field compatibility that are included Magnetic Field Emission: ME Conducted Emission: CE and Coupling Decoupling Network: CDN. The 3 LED lamp which defined as Type A B and C were tested. Each lamps has 16 watt electric power and was different electromagnetic interference of electronic drive. After that the reduce electromagnetic interference circuit has been designed for low frequency. This circuit test was based on Conducted Emission test only. The integrated design was preferable to reduces electromagnetic interference for LED lamp drive device type A to the TIS. standard No. 1955-2551. That design circuit was been trialled in LED lamp drive device type B and C in order monitor efficiency of reduce electromagnetic Interference. The results showed that design circuit can reduce electromagnetic interference from LED lamp drive device type A and B to the standard. For LED lamp drive device types C the design circuit can reduce electromagnetic interference but it still has not achieve the standard.

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แบบจำลองระบบควบคุมสั่งจ่ายการจ่ายไฟฟ้าแบบอัตโนมัติ
แบบจำลองระบบควบคุมสั่งจ่ายการจ่ายไฟฟ้าแบบอัตโนมัติ

This project report proposes a Model of Command System for Automatic d by the device can be controlled automatic transmission. Using the computer Power Control. Generator as a second pass through devices various. And to analyze what is happening in the transmission line. Design and Create Model of Command System for Automatic Power Control This purpose Create Model of Command System for Automatic Power Control. In order to understand the transmission line. And cause occurring in the transmission line. Can be cut the voltage or current out of range immediately beyond the setting. Experiments will be power supply to model And connected to the load for the parameters In order to show the value of the program window That over or under the setting or not. By experiment will be test the effectiveness of the program That has performance any. From experimentation model of Command System for Automatic Power Control able to control the power supply according to demand.

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ชุดจำลองการควบคุมเครื่องกำเนิดไฟฟ้ากระแสสลับสามเฟสเพื่อศึกษาคุณลักษณะของเครื่องกำเนิดไฟฟ้ากระแสสลับสามเฟส
ชุดจำลองการควบคุมเครื่องกำเนิดไฟฟ้ากระแสสลับสามเฟสเพื่อศึกษาคุณลักษณะของเครื่องกำเนิดไฟฟ้ากระแสสลับสามเฟส

This thesis is duplicated of the controlled of the AC. Three Phase Generator with case study and analyze of the characteristic of generator in various operating conditions. By the model works of the actual use in establishment generator this is using generator for backup electricity from main feeder. We have the functional testing of start or stop for check store the characteristics in different conditions at that time. Load distributing of generator for check store parameters. The parallelization of generator into the system in case of emergency while the failure of the mains system. The degradation of generator off the system when main is back to normal or the emergency stops of generator in case of accident during the operation.

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ชุดทอลองการวิเคราะห์การไหลของไฟฟ้าในระบบไฟฟ้ากำลัง
ชุดทอลองการวิเคราะห์การไหลของไฟฟ้าในระบบไฟฟ้ากำลัง

This thesis presents the design and construction of an experiments of the power flow in the power systems. For the operating system of the power flow in the power systems. Comprise with the real power Reactive power Voltage in the power system. To guide the planning and operation of power systems. The results of the experiment to calculate the pressure at various points in the Power loss of system. As well as finding solutions to problems. Occurring in the system such as under voltage or short circuit in the system. This is the basic of stability analysis of power system operation and planning

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