促进风电消纳的区省两级电力系统调度模型  

A Two-Stage Optimal Dispatching Model for Provincial and Regional Power Grids Connected With Wind Farms to Promote Accommodation of Wind Power

作　　者：王秀丽[1] 李骏 黄镔[3] 李焰 

机构地区：[1]西安交通大学电气工程学院,陕西省西安市710049 [2]国网西安供电公司,陕西省西安市710032 [3]中国电力科学研究院,北京市海淀区100192 [4]西北电网有限公司,陕西省西安市710048

出　　处：《电网技术》2015年第7期1833-1838,共6页Power System Technology

基　　金：国家863高技术基金项目(2011AA05A103);国家电网公司科技项目(XT71-11-022)~~

摘　　要：由于风电的随机性、波动性以及不可准确预测性,大规模风电并网将会给系统的调度安排以及安全稳定运行带来直接影响,进而造成风电消纳困难的局面。立足于大规模风电接入电网的实际情况,提出了区省2级优化调度模式以实现风能的有效合理利用。该模式通过在区域电网范围内调整常规机组出力和省间交易电量来平衡风电出力的波动,尽可能减少弃风量,从而实现风能的有效利用。在大区级电网层面,建立了考虑联络线功率控制的大区级优化调度模型,以协调与各省级调度的关系。以西北电网为算例进行了模拟分析,结果表明所提方式是可行、有效的,能够有效提高风电的消纳水平。Large-scale grid-connection of wind farms brings direct affects on the dispatching and secure and stable operation of power grid due to the randomness, fluctuation and unpredictability of wind energy and further it leads to the circumstance that it is difficult to accommodate the wind power. Based on actual situation that large-scale wind farm is grid-connected, a two-stage optimal dispatching mode for provincial and regional power grids is proposed to implement the effective and reasonable utilization of wind energy. By means of adjusting the output of conventional generating units within the regional power grid and the trans-provincial transacted electricity quantity, the proposed dispatching mode can reduce the wind power curtailment as far as possible to implement the effective utilization of wind energy. In the level of trans-provincial power grid, an optimal dispatching model for trans-provincial power grid, in which the power control of tie line is taken into account, is established to coordinate the relationship among provincial power dispatching centers. Taking Northwest China power grid for example, the simulation results show that the proposed method is feasible and effective, and the accommodation level of wind power can be effectively improved by the proposed mode.

关 键 词：风电消纳 区省2级调度 联络线功率控制 

分 类 号：TM734[电气工程—电力系统及自动化]