CAJ | 학술논문

针对目前风电并网容量优化分析对风电出力随机性考虑的不足,在电力系统柔性分析研究的基础上,引入柔性参数,将风电功率的随机性柔性化表示,并将其量化为惩罚成本计入风电运行价值函数中。同时,考虑风电运行价值对风电并网容量的影响,建立了风电并网容量优化柔性数学模型,并运用拉格朗日函数的鞍点理论将此多目标优化模型简化为2个单目标的优化问题。通过IEEE 30节点算例分析表明,风电功率的柔性化表示充分反映了风电出力随机性强的特点,同时优化柔性数学模型的应用使得风电并网容量规划方案的经济性和安全性有机地结合起来,实现了风电运行价值和风电并网容量折中决策。
침대목전풍전병망용량우화분석대풍전출력수궤성고필적불족,재전력계통유성분석연구적기출상,인입유성삼수,장풍전공솔적수궤성유성화표시,병장기양화위징벌성본계입풍전운행개치함수중。동시,고필풍전운행개치대풍전병망용량적영향,건립료풍전병망용량우화유성수학모형,병운용랍격랑일함수적안점이론장차다목표우화모형간화위2개단목표적우화문제。통과IEEE 30절점산례분석표명,풍전공솔적유성화표시충분반영료풍전출력수궤성강적특점,동시우화유성수학모형적응용사득풍전병망용량규화방안적경제성화안전성유궤지결합기래,실현료풍전운행개치화풍전병망용량절중결책。
Given the limitation of optimization models of grid-connected wirid capacity in dealing with randomness of wind power, a novel optimizing flexibility model based on the research on flexible analysis of power system is proposed, considering the influence of operation value of wind power. In this model, the randomness of wind power is expressed by introducing flexible parameters and quantified as a penalty cost into the operation value of wind power. By adopting the saddle node theory of Lagrange function, the multi-objective optimization problem is transformed into two single-objective problems. The calculating results on IEEE 30-bus system demonstrate that the model reflects the randomness of wind power adequately, and the economic and security of planning are combined organically by adopting the proposed model. It enables a compromised decision-making between grid-connected wind capacity and operation value of wind power.