摘要
风电大规模集中接入给电力系统有功调度与控制带来新的挑战。依据风电调度权的不同,提出含风电的上、下级电网交互式协调调度策略,同时提出松弛联络线功率和松弛风电功率的概念,并将此松弛功率作为上、下级交互调度的接口,以应对风电功率波动对电网调度造成的影响并最大限度提高风电的接纳能力。在此基础上建立经济性最优的调度模型。由于涉及不同区域的调度问题,对风电功率和联络线功率成本采用边际成本的定价形式并对边际成本的不同确定方式进行分析研究。仿真结果表明,采用调度权在下级调度方式并将两区域边际成本的均值作为联络线功率成本调度时,全系统经济性最好。
The large-scale integration of centralized wind power brings challenges to the active power dispatch and control of power system. A strategy of interactive and coordinative dispatch according to the jurisdiction of wind power dispatch is proposed for the bi-level power system with wind power. The concept of slack tie-line power and slack wind power is proposed and used as the interactive dispatch interface between the upper and lower grids to deal with the impact of wind power fluctuation on the power grid dispatch and improve the wind power integration capacity to the upmost, based on which,an economically-optimal dispatch model is built. Since the inter-region dispatch is involved,the marginal cost is used for calculating the wind power cost and tie-line power cost,for which,different marginal cost calculation methods are analyzed. Simulative results show that,when the jurisdiction of wind power dispatch is at the lower grid and the average marginal cost of two regions is taken as the tie-line power cost ,the economy of whole system is the best.
出处
《电力自动化设备》
EI
CSCD
北大核心
2015年第11期39-44,51,共7页
Electric Power Automation Equipment
基金
国家高技术研究发展计划(863计划)资助项目(2011-AA05A105)~~
