本文選題：風力發(fā)電 + 風電滲透率　； 參考：《華北電力大學》2017年碩士論文

【摘要】：風力發(fā)電憑借其成熟的技術(shù)、較低的成本和規(guī)�；拈_發(fā)利用優(yōu)勢成為新能源發(fā)展最快、最具有競爭力的發(fā)電技術(shù)。隨著電網(wǎng)中風電滲透率的不斷提高,風電機組相對常規(guī)機組的角色也由“一定性補充”轉(zhuǎn)變?yōu)椤安糠中蕴娲?這給系統(tǒng)的安全穩(wěn)定運行帶來諸多影響。由于風電的規(guī)�；撼隽ο鄬ζ交�(wěn)定,風場群統(tǒng)一接受調(diào)度中心的實時控制有了一定基礎(chǔ),但風電機組通常處于最大發(fā)電運行模式,對電力系統(tǒng)的頻率缺乏支撐作用。當系統(tǒng)中負荷波動較大,AGC機組調(diào)節(jié)容量不足,頻率指標惡化時,如何使風場群釋放快速調(diào)節(jié)容量以增補匱乏的AGC機組調(diào)節(jié)容量,維持系統(tǒng)頻率穩(wěn)定已成為大規(guī)模風電并網(wǎng)后亟需解決的問題。為保證系統(tǒng)中有充足的調(diào)峰調(diào)頻容量,本文主要是對風電場群在特定情況下相互間的自治功率分配以及協(xié)調(diào)常規(guī)機組參與系統(tǒng)頻率調(diào)節(jié)的策略研究。首先,根據(jù)某實際風電場的運行數(shù)據(jù)及輸出功率曲線,對風電場功率輸出特性進行分析。通過風力發(fā)電機調(diào)節(jié)特性以及系統(tǒng)頻率一、二次調(diào)節(jié)的原理,分析了風電并網(wǎng)后對系統(tǒng)頻率調(diào)節(jié)的影響。然后,介紹了一些高風電滲透率國家為應(yīng)對風電機組對頻率變化的無能為力所發(fā)布的一系列電網(wǎng)導則和規(guī)定。其次,通過本文制定的相關(guān)指標,定性對比分析了單一風場與風場組的出力特性,并利用風電的超短期功率預測信息,由風功率預測變化趨勢,將風場組劃分為三類,明確各類風場組的控制原則,給出功率的具體分配方法。利用某風電基地的超短期功率預測信息,驗證其有效性,為后續(xù)集群風場組參與系統(tǒng)的頻率調(diào)控策略奠定了基礎(chǔ)。最后,在分析非AGC機組、AGC機組、風場群有功功率調(diào)節(jié)間的協(xié)調(diào)關(guān)系基礎(chǔ)上提出了使風場群在特定情況下釋放部分調(diào)節(jié)容量以增補匱乏的AGC機組調(diào)節(jié)容量參與系統(tǒng)頻率調(diào)節(jié)的調(diào)控策略,并給出了非AGC機組、風場群及AGC機組間進行調(diào)節(jié)的協(xié)調(diào)條件,建立了三類機組集合的協(xié)調(diào)調(diào)度模型。算例分析結(jié)果說明了本文所提協(xié)調(diào)控制策略及建立的數(shù)學模型的合理性與適用性。
[Abstract]:Wind power has become the fastest and most competitive power generation technology by virtue of its mature technology, low cost and advantage of large-scale development and utilization. With the continuous improvement of wind power permeability in power grid, the role of wind turbine relative to conventional units has changed from "certain supplement" to "partial substitution", which has brought a lot of influence to the safe and stable operation of the system. Due to the relatively smooth and stable wind power output of the large-scale wind power cluster, the wind field group is unified to accept the real-time control of the dispatching center. However, the wind turbine unit is usually in the maximum generation operation mode, which is lack of support to the frequency of the power system. When the load fluctuation in the system is very large and the regulating capacity of AGCs is insufficient and the frequency index is deteriorating, how to make the wind field group release the fast regulating capacity to supplement the regulating capacity of the deficient AGC units. Maintaining system frequency stability has become an urgent problem after large-scale wind power grid. In order to ensure sufficient peak-shaving and frequency modulation capacity in the system, this paper mainly focuses on the autonomous power allocation among wind farm groups under certain circumstances and the strategy of coordinating conventional units to participate in the frequency regulation of the system. Firstly, according to the operation data and output power curve of a practical wind farm, the power output characteristics of wind farm are analyzed. Based on the regulation characteristics of wind turbine and the principle of the first and second frequency regulation of the system, the influence of wind power grid connection on the frequency regulation of the system is analyzed. Then, a series of grid guidelines and regulations issued by some countries with high wind power permeability to deal with the powerlessness of wind turbine against frequency change are introduced. Secondly, the characteristics of wind field and wind field are analyzed qualitatively and qualitatively by using the relative indexes of this paper. The wind field is divided into three categories according to the wind power forecast trend by using the ultra-short-term power prediction information of wind power. The control principle of all kinds of wind field groups is defined, and the specific power distribution method is given. The ultrashort power prediction information of a wind power base is used to verify its effectiveness, which lays a foundation for the subsequent cluster wind field groups to participate in the frequency control strategy of the system. Finally, in the analysis of non- units, On the basis of the coordination relationship between the active power regulation of wind field group, this paper puts forward the control strategy that the wind field group releases part of the regulating capacity to supplement the deficient AGC unit's regulating capacity to participate in the frequency regulation of the system, and gives the non-AGC unit. The coordination conditions between the wind field group and the AGC unit are adjusted, and the coordination scheduling model of the three sets of units is established. An example is given to illustrate the rationality and applicability of the proposed coordinated control strategy and the mathematical model established in this paper.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM614;TM73

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本文編號：1816618