本文選題：風(fēng)電場 + 備用容量��； 參考：《華北電力大學(xué)》2014年碩士論文

【摘要】：近年來，，風(fēng)能作為一種可再生清潔能源，對其的開發(fā)利用已成為緩解能源危機(jī)和減少環(huán)境污染的重要手段之一。隨著風(fēng)電裝機(jī)并網(wǎng)容量的不斷增大，其出力變化的隨機(jī)性和間歇性對現(xiàn)有電力系統(tǒng)的影響日益突出，風(fēng)電并網(wǎng)后，系統(tǒng)為維持頻率穩(wěn)定，需要更加合理的備用容量配置。因此本文對大規(guī)模風(fēng)電場并網(wǎng)后，電力系統(tǒng)備用容量優(yōu)化進(jìn)行了研究，并針對風(fēng)電并網(wǎng)帶來的備用容量需求增大的問題，提出了含風(fēng)電場的互聯(lián)電力系統(tǒng)備用容量優(yōu)化模型。 首先，針對風(fēng)電并網(wǎng)后帶來的不確定因素，基于機(jī)會(huì)約束規(guī)劃，建立了含大規(guī)模風(fēng)電場的電力系統(tǒng)備用容量優(yōu)化模型。模型考慮了大規(guī)模風(fēng)電場并網(wǎng)發(fā)電的情況，對發(fā)電機(jī)組的故障停運(yùn)、負(fù)荷預(yù)測誤差和風(fēng)電場出力預(yù)測誤差等不確定因素進(jìn)行了建模，以系統(tǒng)的安全穩(wěn)定運(yùn)行的概率作為備用容量的約束條件。模型采用基于Monte-Carlo隨機(jī)模擬的遺傳算法作為求解算法。 其次，大規(guī)模風(fēng)電并網(wǎng)后，系統(tǒng)的備用容量需求將急劇增大，對此本文建立了含風(fēng)電場的互聯(lián)電力系統(tǒng)備用容量優(yōu)化模型。模型針對構(gòu)成互聯(lián)電力系統(tǒng)的各子系統(tǒng)的備用容量配置特點(diǎn)，將其劃分為備用容量富足子系統(tǒng)和稀缺子系統(tǒng)，然后分析各子系統(tǒng)不同的備用容量調(diào)用方式，分別建立了各自基于機(jī)會(huì)約束規(guī)劃的安全穩(wěn)定約束。模型充分考慮了影響備用容量配置的各種不確定因素，并且量化了共享備用的容量大小，明確了共享備用在各子系統(tǒng)間的調(diào)用過程。 最后，本文以IEEE標(biāo)準(zhǔn)測試系統(tǒng)為算例，通過MATLAB編程實(shí)現(xiàn)算法，對上述兩模型的可行性進(jìn)行了驗(yàn)證。算例分析表明：大規(guī)模風(fēng)電場并網(wǎng)后，電力系統(tǒng)對備用容量的需求增大，且增大程度遠(yuǎn)大于同規(guī)模的負(fù)荷備用需求；通過互聯(lián)電力系統(tǒng)備用容量聯(lián)合優(yōu)化，在保證系統(tǒng)安全穩(wěn)定的前提下，該模型能有效降低系統(tǒng)總的備用配置容量，同時(shí)備用容量富足子系統(tǒng)能夠?yàn)楹L(fēng)電場的稀缺子系統(tǒng)提供備用支持，這為解決大規(guī)模風(fēng)電場接入后備用容量配置問題提供了新的思路。
[Abstract]:In recent years, wind energy as a renewable clean energy, its development and utilization has become an important means to alleviate the energy crisis and reduce environmental pollution. With the increasing of wind power grid connection capacity, the randomness and intermittency of wind power output change have more and more influence on the existing power system. After wind power grid connection, the system needs more reasonable spare capacity configuration to maintain frequency stability. Therefore, this paper studies the optimization of reserve capacity of power system after large-scale wind farm is connected to grid, and puts forward an optimization model of reserve capacity of interconnected power system with wind farm in view of the problem of increasing demand for reserve capacity caused by wind power grid connection. Firstly, aiming at the uncertainty caused by wind power grid connection, a power system reserve capacity optimization model with large-scale wind farm is established based on opportunistic constrained programming. The model takes into account the large-scale wind farm grid-connected power generation, and models the uncertain factors such as fault outage, load forecasting error and wind farm output prediction error. The probability of safe and stable operation of the system is taken as the constraint of reserve capacity. The genetic algorithm based on Monte-Carlo random simulation is used as the solving algorithm. Secondly, after large-scale wind power is connected to the grid, the demand for reserve capacity of the system will increase sharply. In this paper, an optimization model of the reserve capacity of interconnected power system with wind farm is established in this paper. According to the characteristics of spare capacity configuration of each subsystem, the model divides it into spare capacity abundant subsystem and scarce subsystem, and then analyzes the different standby capacity transfer modes of each subsystem. Security and stability constraints based on chance constraint programming are established respectively. The model takes into account all kinds of uncertain factors that affect the configuration of standby capacity, quantifies the capacity of shared standby, and clarifies the call process of shared standby between subsystems. Finally, taking IEEE standard test system as an example, the feasibility of the above two models is verified by MATLAB programming. The analysis of example shows that the demand for reserve capacity of power system increases after large-scale wind farm is connected to grid, and the increase degree is much larger than that of load reserve demand of the same scale, and the reserve capacity of interconnected power system is optimized by the joint optimization of reserve capacity of interconnected power system. On the premise of ensuring the safety and stability of the system, the model can effectively reduce the total reserve configuration capacity of the system, and the spare capacity abundant subsystem can provide backup support for the scarce subsystem including wind farm. This provides a new idea for solving the problem of standby capacity allocation after large scale wind farm is connected.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM614

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