| 引用本文: | 李林川,顾丽梅,赵森林.考虑消除阻塞的分段竞价电力市场出清算法[J].电力自动化设备,2007,27(4):1-5 |
| .Electricity market clearing algorithm considering congestion elimination based on block bidding model[J].Electric Power Automation Equipment,2007,27(4):1-5 |
|
|
| 摘要: |
| 研究了在发电侧开放的电力市场下,作为电网公司,在保证电网运行的安全性及电能质量的前提下,如何购买各发电厂的电力,使得既满足用户的需要又实现安全性和经济性。提出了一种用灵敏度方法消除阻塞的分段竞价电力市场的出清算法,先在不考虑支路过载的情况下,按各发电机的报价进行竞价,依次安排基荷、腰荷和峰荷段的出力;再选取负荷最大时刻对网络进行阻塞管理,以阻塞调整的费用最小为目标,根据各发电机相对阻塞支路的灵敏度调整各发电机的功率,根据此阻塞管理结果对整体竞价过程进行调整并考虑爬坡约束,通过优化腰、峰荷的分界点,得到考虑消除阻塞的分段竞价电力市场的各发电机出力。这种考虑消除阻塞的分段竞价电力市场的出清算法不仅满足电能生产的连续性,区分了电能质量,体现了市场公平性,而且消除了阻塞,因此其结果更具有实用价值。以IEEE 30节点系统为例,证明了算法的可行性。 |
| 关键词: 电力市场,分段竞价,阻塞管理,灵敏度 |
| DOI： |
| 分类号:TM73 F123.9 |
| 基金项目: |
|
| Electricity market clearing algorithm considering congestion elimination based on block bidding model |
|
LI Lin-chuan GU Li-mei ZHAO Sen-lin
|
| Abstract: |
| In the electricity market with opened generation side,how to purchase electricity from power plants with minimal cost while satisfying security,economy and user requirements is studied for power grid company.A clearing algorithm based on the block bidding model is presented,which uses the sensitivity method to eliminate congestion.The basic load blocks,intermediate load blocks and peak load blocks of all generators are sorted in order first according to their bids without considering the congestion.The congestion management is then carried out for the maximum load while keeping the adjustment cost minimal.The active power of each unit is adjusted according to their sensitivity to the overload line,and the whole bidding is thus adjusted by the results of congestion management considering constraints.The output of each unit is then determined by optimizing the dividing point between intermediate load block and peak load block.The proposed algorithm satisfies product continuity,distinguishes power quality,shows market justice,and eliminates congestion,with more realistic value.The calculation on IEEE 30-bus system shows its feasibility. |
| Key words: electricity market,block bidding,congestion management,sensitivity |
