จำนวน Repository ( 22 )

ชุดสาธิตการผลิตไฟฟ้าด้วยพลังงานน้ำ
ชุดสาธิตการผลิตไฟฟ้าด้วยพลังงานน้ำ

This project aims to create a series of demonstration power plant water. And the operation of the circuit Inverter split by the end of demonstration runs as follows. Theory and documents relating to the source of electrical power water power the working principle of the circuit. Inverter the principle of integrated battery charger main circuit voltage VDC LED LED SMD (Surface-Mounted-Device) a voltmeter. Ammeters digital LCD display couples. Make plans to offer advisors the project approved. Design demonstration kit Equipment supply and assembly Assembly and demonstration the production of electricity from hydropower 220 VAC test run is a series of demonstrations to generate electricity from water power to 220 VAC storage performance voltage and current output. And analyze the results of the operation of the demonstration production of electricity from hydropower 220 VAC and conclusions in this chapter are the results of the experiment demonstrated the production of electricity from hydropower and the conclusion of the trial in order to be used. effectiveness of the objectives of the experimental procedure the results can not load a load test. Test kits demonstration power plant and the demonstration set to produce 220 volts for 25 minutes at a constant voltage. The electricity does not increase or decrease. Always works The term of office is fixed or reduced by the ratio of active power increases.

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Creating and evaluating the effectiveness of computer assisted instruction program subject electric power system analysis chapter 3-6.
Creating and evaluating the effectiveness of computer assisted instruction program subject electric power system analysis chapter 3-6.

The purposes of the research were to create and efficiency validation of computer assisted for the courses of practiced to reading. Creating and Evaluating the Effectiveness of Computer Assisted Instruction Program Subject Electric Power System Analysis Chapter 3-6 based standard and analyses the leaning achievement of the student after by using computer assisted instruction. The subjects in the study were first year diploma students enrolled in Rajamangala University of Technology Phra Nakhon . The Researcher using the experiment by let the students do until test before class And then study by using computer assisted instruction focused on practiced to basic turning. After that let students do the unit test again at the class and calculate to find out the efficiency of the computer assisted instruction and analyses the leaning achievement of students after study . The research result revealed that the efficiency of the computer assisted Instruction was efficient in standard Moreover after learning achievement At significant level of 0.05 .

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การสร้างและหาประสิทธิภาพบทเรียนคอมพิวเตอร์ช่วยสอนวิชาการวิเคราะห์ระบบไฟฟ้ากำลัง บทที่ 1-2
การสร้างและหาประสิทธิภาพบทเรียนคอมพิวเตอร์ช่วยสอนวิชาการวิเคราะห์ระบบไฟฟ้ากำลัง บทที่ 1-2

The purposes of the research were to create computer assisted instruction for Electric Power System Analysis Chapter 1-2 to find out the efficiency validation of computer assisted instruction based on the standard of 90/90 and to analyse the students learning achievement after using the computer assisted instruction. The subjects in the study were 17 third-year diploma engineering students enrolling at Rajamangala University of Technology Phra Nakhon. The researcher made the experiment by having the students pretest. Then they studied by using the computer assisted instruction focused on practicing basic turning. After the students had studied and had posttest the efficiency of the computer assisted instruction was calculated as well as the learning achievement was analysed. The research result revealed that the efficiency of the computer assisted instruction was at the standard of 90 / 90. Moreover the learning achievement after using the computer assisted instruction was different at the significant level of 0.05.

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แบบจําลองการวิเคราะห์การไหลของกําลังไฟฟ้า
แบบจําลองการวิเคราะห์การไหลของกําลังไฟฟ้า

his project presents a power flow analysis model for the purpose of studying power flow in a power system model. At present electric power is an important factor driving the country both in industry and transportation. The demand for electric power tends to increase the production is insufficient to meet the demand. Therefore it is necessary to make the most of the energy resources available in the system. An effective system must be analyzed to detect possible errors. A sudden increase or decrease in load in the system may result in inadequate production and distribution efficiency. Therefore this project is presented for the analysis of power flow in a 3 bus 5 bus and 30 bus power system model using a math simulation program. It is divided into 3 case studies: Case 1 power flow under normal conditions Case 2 transmission line disconnection Case 3 adding distributed power generation sources.

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การปรับปรุงคุณภาพไฟฟ้าในระบบจำหน่ายไฟฟ้าโดยการเชื่อมต่อแหล่งผลิตไฟฟ้าแบบกระจายตัวพลังงานแสงอาทิตย์
การปรับปรุงคุณภาพไฟฟ้าในระบบจำหน่ายไฟฟ้าโดยการเชื่อมต่อแหล่งผลิตไฟฟ้าแบบกระจายตัวพลังงานแสงอาทิตย์

This thesis presents improving power quality in power distribution system with integration of photovoltaic energy distributed generation having objectives to improve power quality in distribution system model of voltage sag and voltage swell in distribution system model of power loss in distribution system application of mathematical model model of power generation by using solar energy and distributed generation connection technique simulation. In this thesis the power flow was tested with Newton-Raphson algorithm joining with mathematical model. The case study was done by reduction of power loss in distribution system by using techniques of connection of distributed generation joining with model of distribution system 33 bus. The case study about improvement of voltage sag and voltage swell in distribution system used connection techniques of distributed generation joining with model of distribution system 69 bus. The study found that technique of connection of distributed generation that was presented could reduce power loss and showed the percentage of improvement of voltage sag and voltage swell in distribution system especially voltage sag case according to IEEE 1159-1995 standard. This thesis showed that severity level of voltage sag depended on the size and duration of each distribution system model situation by photovoltaic energy distributed generation can reduce voltage sag.

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