【摘要】：隨著風(fēng)電場裝機(jī)容量的不斷增大，，風(fēng)電場并網(wǎng)對電網(wǎng)的影響越來越大。由于風(fēng)電機(jī)組所固有的隨機(jī)性，使得風(fēng)電場并網(wǎng)后電網(wǎng)的無功有功潮流分布、電壓穩(wěn)定性等都受到了較大的影響。本文重點(diǎn)研究了含風(fēng)電場的地區(qū)電網(wǎng)無功優(yōu)化問題，從數(shù)學(xué)模型、算法和仿真計(jì)算等幾個側(cè)面進(jìn)行了相關(guān)問題的研究。 本文首先對含有風(fēng)電場的無功優(yōu)化問題進(jìn)行了較為全面的綜述和總結(jié)，分析了風(fēng)電機(jī)組有功功率和無功功率的輸出特性及控制特性。 對傳統(tǒng)無功優(yōu)化問題進(jìn)行了改進(jìn)，以有功網(wǎng)損最小和無功補(bǔ)償容量最小共同作為目標(biāo)函數(shù)，綜合考慮運(yùn)行成本和規(guī)劃成本；研究了目標(biāo)函數(shù)權(quán)重因子與運(yùn)行約束及目標(biāo)函數(shù)值之間的關(guān)聯(lián)關(guān)系，提出一種權(quán)重因子優(yōu)化整定方法，通過多次優(yōu)化計(jì)算和智能篩選，滿足電網(wǎng)對有功損耗、補(bǔ)償容量和特定運(yùn)行約束的綜合要求。 把上述優(yōu)化方法應(yīng)用于含有風(fēng)電場的地區(qū)電網(wǎng)無功優(yōu)化問題，建立了含有風(fēng)電場的地區(qū)電網(wǎng)無功優(yōu)化數(shù)學(xué)模型，綜合考慮含有風(fēng)電場地區(qū)電網(wǎng)無功電源最大規(guī)劃容量要求，網(wǎng)損百分率要求，風(fēng)電母線和其它電網(wǎng)母線電壓水平要求，通過多目標(biāo)優(yōu)化計(jì)算，得到同時滿足運(yùn)行要求和規(guī)劃要求的含有風(fēng)電場地區(qū)電網(wǎng)無功優(yōu)化策略。采用算例進(jìn)行分析驗(yàn)證，證明了方法的有效性。
[Abstract]:With the increasing of installed capacity of wind farm, the influence of grid connection of wind farm is more and more great. Due to the inherent randomness of wind turbines, the distribution of reactive power flow and voltage stability of the grid after wind farms are connected to the grid are greatly affected. In this paper, the reactive power optimization problem of regional power grid with wind farm is studied, and the related problems are studied from mathematical model, algorithm and simulation calculation. In this paper, the reactive power optimization problem with wind farm is summarized, and the output and control characteristics of active and reactive power of wind turbine are analyzed. The traditional reactive power optimization problem is improved. The minimum active power network loss and the minimum reactive power compensation capacity are taken as the objective function, and the operation cost and the planning cost are considered synthetically. In this paper, the relationship between objective function weight factor, operation constraint and objective function value is studied. A weight factor optimization tuning method is proposed to satisfy the active power loss of power network through multiple optimization calculation and intelligent screening. Comprehensive requirements for compensating capacity and specific operational constraints. The above optimization method is applied to the reactive power optimization problem of regional power grid with wind farm, and the mathematical model of reactive power optimization is established, and the maximum planning capacity of reactive power supply in the area with wind farm is considered synthetically. According to the requirements of power loss percentage, voltage level of wind busbar and other grid busbar, through multi-objective optimization calculation, a reactive power optimization strategy with wind farm area is obtained, which meets both the operational requirements and the planning requirements. An example is used to verify the effectiveness of the method.
【學(xué)位授予單位】：沈陽工業(yè)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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本文編號：2229334