分段竞价电力市场的模拟、分析和比较

Simulation, Analysis and Comparison of Block Bidding Power Market

以IEEE RTS系统数据为例,对分段竞价的电力市场进行了模拟和分析.研究了负荷的分段方法和出清规则对市场竞价的影响,结果表明:负荷分段越多,市场的购电费用越低,市场效率越高,同时市场出清应采用必要的规则以保证发电计划的可行性和合理性.提出了水电机组在分段竞价中的竞价方式,水电机组按照库容优先调度,并按所带负荷段给予相应电价,既充分利用了水量又反映了不同运行方式对系统的贡献.以典型日和典型周负荷为例,对分段竞价和分时竞价进行了比较,结果表明,分段竞价降低了市场购电费用,市场效率提高,市场出清价较分时竞价更加平稳.

Based on IEEE-RTS data, block bidding power market is simulated and analyzed. The effect of block division and the market rules to the power auction are studied. Results show that the more load blocks are divided, the more payment saving can be gained, and the market rules are necessary to guarantee the feasible and rational power scheduling. The auction of hydro unit in the block bidding is proposed. Hydro unit is dispatched in advance and paid as the price of loaded block, which can sufficiently utilize hydro energy and reflect the contribution to the system. In either case of the typical daily load and weekly load, block bidding and hourly bidding are compared. The results indicate that, in contrast to hourly bidding, block bidding decreases the market payment and improves market efficiency, and the clearing prices are more stable.