Some relative technical constraints have been considered, such as power balance, hydro/thermal power balance, construction start and power commencement date.

• 以电源投资费用等年值最小为目标函数，结合相关技术约束（电力平衡、水火电平衡、电源投产/电厂开工时间）条件，克服了组合爆炸问题。