本文選題：暫態(tài)穩(wěn)定性 + 雙饋風(fēng)力發(fā)電機(jī)��； 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著我國近年來風(fēng)力發(fā)電的快速發(fā)展,風(fēng)力發(fā)電已經(jīng)成為我國非常重要的電能來源。雖然近年來風(fēng)電發(fā)展迅速,但依然存在一些急需解決的問題,其中風(fēng)電的并網(wǎng)消納和風(fēng)電并網(wǎng)對電力系統(tǒng)的穩(wěn)定性影響是最突出的兩個問題。由于風(fēng)電的大規(guī)模并網(wǎng)改變了系統(tǒng)原有的結(jié)構(gòu)和特性,因此對含風(fēng)電的電力系統(tǒng)進(jìn)行暫態(tài)穩(wěn)定性的分析,并研究提高系統(tǒng)暫態(tài)穩(wěn)定性的控制策略是很有必要的。本文基于擴(kuò)展等面積法對風(fēng)電并網(wǎng)對電力系統(tǒng)暫態(tài)穩(wěn)定性的影響進(jìn)行理論研究,并基于理論研究的成果提出能改善含風(fēng)電電力系統(tǒng)的暫態(tài)穩(wěn)定性的控制策略。首先,基于傳統(tǒng)的擴(kuò)展等面積法的原理及雙饋風(fēng)力發(fā)電機(jī)的結(jié)構(gòu)和暫態(tài)特性,利用擴(kuò)展等面積法對含風(fēng)電的電力系統(tǒng)進(jìn)行暫態(tài)穩(wěn)定性的研究,提出含風(fēng)電系統(tǒng)暫態(tài)過程中加速面積、減速面積和穩(wěn)定度的計(jì)算方法,然后通過算例對所提出的理論分析方法進(jìn)行評估驗(yàn)證,并提出該方法的適用條件。然后,為了分析風(fēng)電并網(wǎng)對電力系統(tǒng)暫態(tài)穩(wěn)定帶來的影響,采用所提出的含風(fēng)電電力系統(tǒng)暫態(tài)穩(wěn)定EEAC算法,進(jìn)行了具體分析。分別討論用等量風(fēng)電替換火電并網(wǎng)及風(fēng)電滲透率對系統(tǒng)暫態(tài)穩(wěn)定的影響。并結(jié)合時域仿真進(jìn)一步對風(fēng)電場并網(wǎng)對電力系統(tǒng)暫態(tài)穩(wěn)定性的影響進(jìn)行對比分析。通過研究發(fā)現(xiàn),在不考慮同步機(jī)暫態(tài)控制的條件下,同等容量下的風(fēng)電場并網(wǎng)與火電廠并網(wǎng)相比,對電力系統(tǒng)暫態(tài)功角穩(wěn)定性有更積極的影響;而不同風(fēng)電滲透率下,風(fēng)電場對系統(tǒng)暫態(tài)穩(wěn)定性的影響與諸多因素相關(guān),因此要根據(jù)具體并網(wǎng)情況進(jìn)行分析。最后對能改善含風(fēng)電系統(tǒng)暫態(tài)穩(wěn)定性的控制策略進(jìn)行研究,基于擴(kuò)展等面積定則和暫態(tài)功角曲線對影響含風(fēng)電系統(tǒng)暫態(tài)穩(wěn)定性的因素進(jìn)行分析,基于分析結(jié)果提出利用SVG進(jìn)行無功補(bǔ)償,提高暫態(tài)期間風(fēng)電場并網(wǎng)母線電壓,并設(shè)計(jì)了SVG的控制策略。最后基于實(shí)例對利用SVG進(jìn)行無功補(bǔ)償?shù)目刂撇呗赃M(jìn)行仿真驗(yàn)證,證明了該方法的可行性。
[Abstract]:With the rapid development of wind power generation in China in recent years, wind power has become China's important energy sources. Although in recent years the rapid development of wind power, but there are still some problems need to be resolved, including wind power consumptive and wind power integration on power system stability influence is the two most prominent problems because of large-scale grid connected wind power has changed the structure and characteristics of the original system, the power system with wind power transient stability analysis, and Research on control strategy for improving system transient stability is very necessary. This paper extended equal area method for theoretical research on the impact of wind power integration on power system transient stability based on the results of theoretical research, and proposed control strategy can improve the transient stability of the power system with wind power. First of all, based on the traditional principle of EEAC method and double The structure and transient characteristics of doubly fed wind power generator, the research on the transient stability of power system with wind power by EEAC method, put forward to accelerate the area of power system with wind power transient process, deceleration area calculation method and stability, and then through the example of evaluation method for analysis of the proposed theory, and put forward the applicable conditions of the method. Then, in order to analyze the impact of wind power on power system transient stability, the wind electric power system transient stability EEAC algorithm with the proposed and analyzed. Discuss the use amount of wind power in power grid and replace the penetration of wind power on system transient stability. Combined with the time domain simulation further influence on wind farm on power system transient stability analysis. Through the study found that, without considering the transient control of synchronous machine under the condition of the same Compared to wind power and thermal power plant under grid capacity, have more positive effects on power system transient stability; and different wind power penetration, influence of wind field on the system transient stability is related to many factors, so it should be analyzed according to the specific situation. At the end of the grid can improve the control strategy of wind power system transient stability, analyze the factors of extended equal area criterion and transient power angle curve of wind power system transient stability based on the results of the analysis put forward by SVG based on the reactive power compensation, improve the temporary bus voltage during the state grid connected wind farm, and designed the control strategy of SVG. Finally based on case control strategy reactive power compensation for the use of SVG simulation results prove the feasibility of this method.

【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM614;TM712

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