CAJ | 학술논문

风电随机性对电力系统安全、经济运行产生深远影响。该文在日前框架下，利用随机优化理论建立考虑辅助服务市场的电力系统动态经济调度模型。该模型除计及常规机组约束、风速预测误差与网络安全约束外，还将系统备用容量需求分解为自动发电控制(automatic generation control，AGC)容量与事故备用容量，考虑2类备用容量运行约束，并将两者购买成本分别计入目标函数，在得到发电机最优出力计划的同时，实现2类备用容量在各机组间的分时段优化分配。采用基于Bootstrap估计的样本平均值方法确定随机变量置信区间以避免复杂的卷积计算，将原问题分解为确定性非线性优化问题和解校验2部分，利用序列二次规划法求解后运用随机模拟方法进行线路潮流约束校验，并依校验结果调整约束条件重新求解。含风电场的IEEE 6机30节点、54机118节点算例验证了模型的正确性和算法的有效性。
풍전수궤성대전력계통안전、경제운행산생심원영향。해문재일전광가하，이용수궤우화이론건립고필보조복무시장적전력계통동태경제조도모형。해모형제계급상규궤조약속、풍속예측오차여망락안전약속외，환장계통비용용량수구분해위자동발전공제(automatic generation control，AGC)용량여사고비용용량，고필2류비용용량운행약속，병장량자구매성본분별계입목표함수，재득도발전궤최우출력계화적동시，실현2류비용용량재각궤조간적분시단우화분배。채용기우Bootstrap고계적양본평균치방법학정수궤변량치신구간이피면복잡적권적계산，장원문제분해위학정성비선성우화문제화해교험2부분，이용서렬이차규화법구해후운용수궤모의방법진행선로조류약속교험，병의교험결과조정약속조건중신구해。함풍전장적IEEE 6궤30절점、54궤118절점산례험증료모형적정학성화산법적유효성。
The randomicity of wind power brings so many impacts on safe and economic operation of power system. This paper proposed a dynamic economic dispatch model considering the influence of ancillary service market. The model accounted for the optimal scheduling for reserve besides conventional constraints. The whole reserve demand was decomposed into automatic generation control (AGC) reserve and emergency reserve, whose regulation range and cost were added to the model. A sample average algorithm was used to transform the chance constraints into deterministic ones to avoid complex convolution operation based on Bootstrap test. The corresponding deterministic nonlinear programming was solved with the sequential quadratic programming (SQP) method. The solution was tested with random experiment, and the constraints were adjusted based on in turn. Correctness and effectiveness of the proposed techniques are illustrated in IEEE 30 and 118 systems with wind farms respectively.