关于智能电网的论文选题方向怎么选

关于智能电网的论文选题方向怎么选

尝试阶段，虚的多，实的少

要考虑自己的能力和时间要求，智能制造相对来说更宏观一些，内容更广一些，而智能控制技术相对来说要精细一些，内容更深一些。论文选题可遵循以下几条原则：选择自己所学专业范围之内，体现专业素养，综合考虑自己的能力和时间要求，选题选择大小适中，所选题目与生活相关，通过研究帮助解决现实中的问题。智能制造，源于人工智能的研究，一般认为智能是知识和智力的总和，前者是智能的基础，后者是指获取和运用知识求解的能力。智能控制是具有智能信息处理、智能信息反馈和智能控制决策的控制方式，是控制理论发展的高级阶段，主要用来解决那些用传统方法难以解决的复杂系统的控制问题。

“智能电网”目前是比较热。但是你师兄说的我觉得不是很有道理。好不好找工作，关键是你有没有学到真正的知识。

关于智能电网的论文选题方向

“智能电网”目前是比较热。但是你师兄说的我觉得不是很有道理。好不好找工作，关键是你有没有学到真正的知识。

尝试阶段，虚的多，实的少

老铁你这个属于收费服务了。

关于智能电网的论文选题方向怎么写

Abstract: With the development of power electronics technology， harmonic hazards has become increasingly serious， harmonic governance issues has been On the power source for electronic devices harmonic analysis and concluded that its harm and the corresponding harmonic management principles and comprehensive management， and management of a harmonic Key words: power electronics; harmonics; hazards; inhibition INTRODUCTION With the development of power electronics technology， power electronic devices to the extensive application of power system harmonics caused serious Various power electronic equipment in the transport， metallurgical， chemical and other industrial traffic the extensive application of harmonics in the grid problem is becoming increasingly serious， many low power factor of power electronic devices to the power grid additional burden on the quality of power and influence， Therefore， the power electronic devices harmonic pollution has become hinder the development of power electronics technology major Therefore， inhibition harmonic pollution and improve the power factor of power electronics technology has become a major issue in This paper focus on the key issues of power through electronic harmonic sources and the danger of understanding and analysis， and control of pollution from the relationship between the consideration of a comprehensive management approach on the final harmonic trends in the development of comprehensive management of the A power electronic device - the main source of harmonics Nonlinear load is a harmonic sources， which caused grid voltage distortion， in the voltage several times with the whole of the fundamental frequency Harmonic as the main source of power for various electronic devices mainly AC-DC converter (rectifiers， inverters， chopper， Drives)， as well as bidirectional thyristor controlled switching equipment， as well as internal power system Variable Flow equipment， such as HVDC rectifier valve and the valve， and other Below its harmonics generated an analysis of the 1 Rectifier As a DC power supply devices， rectifiers widely used in various Figure 1 (a) and Figure 1 (b) respectively for the single-phase and three-phase circuits In rectifier devices， AC power supply for the current rectangular wave， rectangular wave of the fundamental frequency for the current and Jibeiai several times for the high-frequency harmonic current waveform Obtained by Fourier series of rectangular wave of high harmonics In fundamental component I1 and the largest ratio of 1 / n， with the trigger control angle α， and the decrease of overlap angle μ for the increase of harmonic wave components have reduced In addition， the existing research results indicate that: Rectifier harmonic current operation mode of the size， has a direct impact， therefore consider adjusting the voltage and current rectifier， it is best to conduct overlap angle， as well as for harmonic phase pressure drop calculations， in order to determine safe and economical operation mode when the control close to 40 ° angle α， overlapping in the 8 ° angle μ about the circumstances are often the most serious state of harmonic， so to go through， as far as possible through the correct choice of regulating transformers tap in order to avoid Harmonic most serious point [1] 2 exchange regulator Exchange regulator used for lighting dimming and induction motor speed， and so Figure 2 (a) and 2 (b) respectively for the single-phase and three-phase circuits Exchange regulator and the harmonic frequency rectifier basically the Frequency Converter 3 Frequency converter is AC / AC Converter behalf of equipment， when used as motor speed control devices， which contain a change with the output frequency band edge， as for the frequency change， the more complicated harmonic Universal Converter 4 GM converter input circuits are all from the diode bridge rectifier and DC capacitor components in Figure 3 (a) shows， this circuit impedance input current waveform with the different big In the source impedance relatively small cases， the waveform for the lanky Zhaier high-waveform in Figure 3 (b) solid line shows the contrary， when the source impedance relatively large， its waveform for the dwarf and wide flat waveform Figure 3 (b) shown in dotted In addition to these typical converter will be a great number of harmonics， household appliances is not to be ignored harmonic Such as television sets， battery Although their individual capacity little， but because a lot of volume， they injected into the power supply system to the harmonic components can not be 2 harmonic hazards Harmonic hazards of the public network include: 1) make a public network components have additional harmonic loss and reduce the power generation， power transmission equipment efficiency， a large number of 3rd harmonic flow neutral line， the line will cause overheating or even a fire; 2) impact of the normal work of electrical equipment， in addition to additional wear and tear caused， and also enable a motor mechanical vibration， noise and over-voltage， transformer partial serious overheating， capacitors， cables and other equipment overheating， insulation aging， shortened life expectancy， resulting damage; 3) common cause in the local power grid and parallel resonant series resonance， so that harmonic magnification so that the aforementioned hazards greatly increase， or even lead to serious accidents; 4) will lead to protection and automatic device misoperation， and electrical measuring instrument measurement inaccurate; 5) to neighbouring interfere with communications systems， light， noise and lower the quality of communication， information led to heavy loss of the communications systems do not work 3 harmonic management principles To improve power quality， we must strengthen the management of the In restricted to the utility grid harmonic source harmonic current injection， will be allowed to limit the harmonic voltage within the scope of the First it is necessary to have systems in the harmonic sources and distribution， in the harmonic limit its scope in order to allow access， not curing the management measures must be taken to prevent the spread of For this reason the International Electrotechnical Commission (IEC) and the United States have recommended IEEE standards such as IEEE provisions of the current standard harmonic limits shown in Table China Power Grid with the actual level and the standard of other developed countries voltage distortion sine-rate provisions in table Table 1 harmonic current limits (IEEE519-1992 Provisions) Isc / IL H <11 11 35THD <> 0 Table 2 voltage distortion sine-rate limits Supply voltage / kV voltage distortion sine-rate limits / or 3856% 5 4 harmonic comprehensive management At present， China's electric power system harmonics on the management is "pollution first， treatment after" the passive situation，

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有关智能电网的论文选题方向怎么选

我有，不过得两天。如何？

要考虑自己的能力和时间要求，智能制造相对来说更宏观一些，内容更广一些，而智能控制技术相对来说要精细一些，内容更深一些。论文选题可遵循以下几条原则：选择自己所学专业范围之内，体现专业素养，综合考虑自己的能力和时间要求，选题选择大小适中，所选题目与生活相关，通过研究帮助解决现实中的问题。智能制造，源于人工智能的研究，一般认为智能是知识和智力的总和，前者是智能的基础，后者是指获取和运用知识求解的能力。智能控制是具有智能信息处理、智能信息反馈和智能控制决策的控制方式，是控制理论发展的高级阶段，主要用来解决那些用传统方法难以解决的复杂系统的控制问题。

毕业论文 名中QQ来索取 信誉绝对保证 ！！

智能电网相关论文选题方向怎么选

要考虑自己的能力和时间要求，智能制造相对来说更宏观一些，内容更广一些，而智能控制技术相对来说要精细一些，内容更深一些。论文选题可遵循以下几条原则：选择自己所学专业范围之内，体现专业素养，综合考虑自己的能力和时间要求，选题选择大小适中，所选题目与生活相关，通过研究帮助解决现实中的问题。智能制造，源于人工智能的研究，一般认为智能是知识和智力的总和，前者是智能的基础，后者是指获取和运用知识求解的能力。智能控制是具有智能信息处理、智能信息反馈和智能控制决策的控制方式，是控制理论发展的高级阶段，主要用来解决那些用传统方法难以解决的复杂系统的控制问题。

老铁你这个属于收费服务了。

电力电子技术：一门新兴的应用于电力领域的电子技术