本文選題：風電　切入點：可用輸電能力　出處：《東北電力大學》2016年碩士論文

【摘要】：隨著世界范圍內(nèi)環(huán)境和能源問題的日益嚴峻,可再生能源在近年來得到了廣泛的關注和快速的發(fā)展,其中,風能是目前世界上最具大規(guī)模商業(yè)化開發(fā)潛力的可再生能源,而風力發(fā)電是目前世界上增長速度最快的一種可再生能源發(fā)電技術。然而,由于風能本身所具有較強的間歇性和隨機波動性,同時還具有一定的反調峰特性,這些特性對風電場的實時調度提出了愈發(fā)嚴峻的考驗,一方面來說,電網(wǎng)中風電的消納能力亟待得到進一步提高;另一方面,風電的大規(guī)模進入對電力系統(tǒng)運行經(jīng)濟性與可靠性上會產(chǎn)生較大影響,而可用輸電能力(Available Transfer Capability,ATC)是電網(wǎng)運行中具有重要指導意義的參數(shù),其分析與評估必然需要面臨新的挑戰(zhàn)。因此,建立考慮大規(guī)模風電并網(wǎng)電力系統(tǒng)綜合運行效益的ATC優(yōu)化模型,在確保系統(tǒng)安全性約束的前提下實現(xiàn)系統(tǒng)的每一運行點按照考慮系統(tǒng)綜合運行效益的調度模型進行經(jīng)濟性調度,從而可以進一步對系統(tǒng)所有的發(fā)電資源進行優(yōu)化配置,提高電網(wǎng)的運行效益和風電的消納能力,從而實現(xiàn)電網(wǎng)運行安全可靠性與運行經(jīng)濟性的科學協(xié)調。在保證電網(wǎng)安全運行的前提下,盡可能的提高電網(wǎng)的風電接納能力,是當前亟需研究的重點問題,具有重要的理論意義和工程應用價值。首先,本文提出一種風儲聯(lián)合系統(tǒng)及其運行策略,對風電出力波動進行平抑,進而提高其可調度性;然后,通過增加發(fā)電區(qū)域總發(fā)電量,達到極大化發(fā)電區(qū)域總發(fā)電量的目標,考慮風儲聯(lián)合系統(tǒng)的綜合運行效益,在ATC計算過程中的每一狀態(tài)對發(fā)電區(qū)域發(fā)電機有功出力進行考慮風儲聯(lián)合系統(tǒng)綜合運行效益的優(yōu)化調度,從而使系統(tǒng)運行于經(jīng)濟最優(yōu)狀態(tài)且具有較高的風電利用率,并引入簡化的電壓穩(wěn)定局部指標L,從靜態(tài)電壓穩(wěn)定角度確定系統(tǒng)的臨界狀態(tài),從而有效評估了系統(tǒng)的可用輸電能力。
[Abstract]:With the increasingly serious environmental and energy problems in the world, renewable energy has received extensive attention and rapid development in recent years. Among them, wind energy is the most large-scale commercial development potential of renewable energy in the world.Wind power generation is the fastest growing renewable energy generation technology in the world.However, since wind energy itself has strong intermittent and random volatility, and also has some anti-peak-shaving characteristics, these characteristics put forward an increasingly severe test for the real-time scheduling of wind farms. On the one hand,On the other hand, the large-scale entry of wind power will have a great impact on the economy and reliability of power system operation.Available Transfer capability (ATC) is an important parameter in power grid operation, and its analysis and evaluation must face new challenges.Therefore, the ATC optimization model considering the comprehensive operation benefit of large-scale wind power grid connected power system is established.Under the premise of ensuring the security constraints of the system, every running point of the system can carry out economic scheduling according to the scheduling model considering the comprehensive operating benefits of the system, so that all the power generation resources of the system can be further optimized and configured.In order to realize the scientific coordination between the safety, reliability and economy of the power grid, the efficiency of operation and the capacity of wind power consumption are improved.Under the premise of ensuring the safe operation of the power grid, it is an important problem to improve the wind power acceptance capacity of the power grid as much as possible, which has important theoretical significance and engineering application value.First of all, this paper proposes a combined wind storage system and its operation strategy to stabilize the fluctuation of wind power output and improve its schedulability. Then, by increasing the total power generation in the power generation area, we can achieve the goal of maximizing the total power generation in the power generation area.Considering the comprehensive operation benefit of the combined wind-storage system, the optimal scheduling of the combined wind-storage system is carried out in each state of the ATC calculation for the active power output of the generator in the generating area, considering the comprehensive operation benefit of the combined wind-storage system.Therefore, the system runs in the optimal state of economy and has a high utilization rate of wind power. A simplified local index of voltage stability, L, is introduced to determine the critical state of the system from the point of view of static voltage stability, and the available transmission capacity of the system is evaluated effectively.
【學位授予單位】：東北電力大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TM614

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