高比例清洁能源电网灵活调节方法

Flexible adjustment method for power grid with high-proportion clean energy

针对清洁能源高比例接入电网带来的影响,提出了水电、火电、可时移负荷、电池储能、电储热和核电等多种能源以及联络线、频率综合调节模型.通过梳理运行特性将电网运行过程划分为正常调节域、异常调节域和紧急控制域,将火电机组非常规调峰划入异常调节域;构建了电网灵活调节预度计算及其监测方法,为电网运行监视和控制提供依据.结果表明,电网运行各阶段特性是不相同的,需要的调节变量也是不一样的,同样,各运行变量表现的特性也是不同的,因此,三种运行域的划分是符合电网运行实际的.

Aiming at the influence from the access of high-proportion clean energy into the power grid,a comprehensive regulation model for such multiple energy as the hydropower,thermal power,time-shiftable load,battery energy storage,electric thermal storage and nuclear power as well as the tie line and frequency was proposed.Through combing the operational characteristics,the operation process of power grid was divided into the normal regulation domain,abnormal regulation domain and emergency control domain,and the unconventional peak regulation of thermal power unit was classified into the abnormal regulation domain.The flexible adjustment precaution calculation and monitoring method for the power was established,which could provide the basis for the monitoring and control in the operation of power grid.The results show that the characteristics of each stage in the operation of power grid are different,and the required adjustment variables are also different.Similarly,the characteristics of each operation variable are different.Therefore,the division of three operational domains is in line with the actual operation of power grid.