考虑复杂约束的水电站AGC控制策略

发布时间：2018-08-25 12:35

【摘要】：大容量高水头多振动区巨型水电站并网发电给电力系统自动发电控制(automatic generation control,AGC)运行带来极大挑战。该文综合考虑机组多振动区、调节范围、调节精度、调节速率等复杂约束,以全站有功计划为控制目标,系统提出水电站AGC控制策略。提出单机、分组、组合3种分布方式构建机组联合运行模型,利用区间组合理论确定各机组组合的可行调节域,引入AGC触发条件和机组穿越振动区或进入限制运行区台次最少的优先级策略,通过匹配全站有功计划值和机组联合运行模型,确定实时调节的最优机组组合和负荷分配结果,并叠加一次调频修正有功,实现AGC与一次调频的闭环反馈调节。糯扎渡电站AGC模拟运行结果表明,所提策略是合理可行的,比常规策略能更高效地处理多振动区和复杂机组组合运行等新的复杂约束和工况。
[Abstract]:The grid-connected power generation of large hydropower stations with large capacity and high head and multi-vibration area brings great challenges to the operation of power system automatic generation control (automatic generation control,AGC). In this paper, considering the complex constraints of multi-vibration region, regulating range, regulating precision and regulating rate, the AGC control strategy of hydropower station is put forward with the active power plan of the whole station as the control target. In this paper, three distribution modes of single machine, grouping and combination are put forward to construct the combined operation model of units, and the feasible adjustment region of each unit combination is determined by using interval combination theory. By introducing the AGC trigger condition and the priority strategy that the unit passes through the vibration area or the restricted operation area, the optimal unit combination and load distribution results are determined by matching the total station active power plan value and the combined operation model of the unit. And overlay the primary frequency modulation to correct the active power to realize the closed loop feedback regulation between AGC and primary frequency modulation. The results of AGC simulation operation of Nuozhadu Hydropower Station show that the proposed strategy is reasonable and feasible, and it can deal with new complex constraints and conditions more efficiently than the conventional strategy.
【作者单位】：华能澜沧江水电股份有限公司;大连理工大学;
【基金】：国家自然科学基金项目(51579029) 中央高校基本科研业务费专项资金资助(DUT16QY30)~~
【分类号】：TM73

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