澜沧江梯级水电站发电与机组检修联合优化研究

摘要

The cascade hydropower development in Lancang River has built two head projects of Xiaowan and Nuozhadu hydropower stations.As these two projects can play a role of compensation in dry season,every station in downstream can operate in a mode of large power output.Traditional unit overhaul mode has great influence on power generation,therefore the power generation and unit overhaul need to be planned after considering the factors of reservoir drawdown,power supply,equipment repair duration and maintenance resources.By analyzing the loss of power generation during unit overhaul period,the mathematical model of largest equivalent total generating capacity for the joint optimization of power generation and unit overhaul is put forward,and it is calculated by using DPSA combined POA.The case calculation for the joint optimization of cascade stations are carried out and the practical power generation mode and unit overhaul scheme are achieved,which verifies the rationality of model and algorithm.%澜沧江梯级水电站已建成小湾、糯扎渡两大龙头水库,桔期可发挥补偿调节作用使各梯级能大方式发电运行,传统的枯期水电机组检修模式会对梯级电站发电运行产生较大的影响,因此需要结合水库消落、电力供需、设备检修周期、检修资源等因素统筹安排发电运行和机组检修.通过分析机组检修产生的影响电量,提出了梯级电站发电与机组检修联合优化的梯级等效总发电量最大模型,利用逐次逼近算法嵌套逐步优化算法进行模型求解并进行了实例计算,取得了符合实际的梯级电站发电运行方式及机组检修方案,验证了模型及算法的合理性.