水电站短期发电调度规则制定

The short-term power generation scheduling rules for hydropower station

针对以往短期发电调度规则实用性不强等缺点,采用逐步优化算法(POA)与遗传算法(GA)嵌套搜索,对金沙江一梯级电站三个典型年的资料和大量模拟的径流过程进行计算,得出一系列优化调度过程。在此基础上将调度期划分为一般时期与枯汛过渡时期,分析了各时期水电站单独运行与参与梯级联合运行的发电调度运行方式,并总结为简便可行的规则。该规则能充分利用径流预报进行滚动调度,实用性较强。通过对比根据调度规则运行的模拟结果和优化结果可知,电站年发电量最大相对差值也不超过1%,证明该规则可以有效地指导实际生产运行,并为水电站短期发电调度提供了全新的思路。

To overcome the shortcomings of weak practicability of former short-term power generation scheduling rules, series of optimized scheduling processes are given in this paper by analyzing three typical years＇ daily runoff process of a cascade hydropower stations in Jinsha River and a large number of simulation daily runoff process through using POA algorithm in combination with GA algorithm. Based on these optimized scheduling processes, the scheduling period is divided into general period and dry-flood transition period. And then, the scheduling rules of a single hydropower station and a cascade hydropower stations during these two periods are also given. The rules can take full advantage of the rolling runoff forecast and carry out the rolling scheduling. Moreover, compared with the optimizing operation of scheduling rules, the maximum relative difference of the simulation results is no more than 1%. The effectiveness and practical applicability of the rules are testified by a case. Therefore, this paper provides a new perspective in formulating the rules of power generation dispatching.