电工技术学报  2016, Vol. 31 Issue (21): 1-11    DOI:
电力系统及其自动化 |
微电网互联运行的分时优化与实时控制方法
刘念1,李岩松1,2,张建华1,雷金勇3
1.新能源电力系统国家重点实验室华北电力大学 北京 102206
2.四川电力设计咨询有限责任公司 成都 610041
3.南方电网科学研究院 广州 510080
Hour-Ahead Optimization and Real-Time Control Method    for Micro-Grid Interconnection
Liu Nian1,Li Yansong1,2,Zhang Jianhua1,Lei Jinyong3
1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China
2.Sichuang Electric Power Design & Consulting Company Limited Chengdu 610041 China
3.Electric Power Research Institute China Southern Power Grid Guangzhou 510080 China
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摘要 将相邻的孤立微电网互联运行,可促进资源的时空互补与运行优化。提出互联微电网分时优化调度与实时协调控制相结合的运行方法,旨在降低系统发电成本,提高运行稳定性。在分时优化调度层面,基于超短期预测结果,以全系统发电成本最低为目标,提出考虑资源时空互补特性的优化调度方法;在实时协调控制层面,针对风、光、负荷的随机性而引起的功率波动问题,提出基于动态下垂控制的联络线定功率控制方法,使功率波动量得到经济合理分配。算例验证了分时优化调度方法可促进资源互补、降低运行成本,实时仿真结果验证了动态下垂控制策略可有效实现联络线定功率控制。
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刘念
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张建华
雷金勇
关键词 互联微电网分时优化实时控制动态下垂    
Abstract:It is conducive for operation optimization and resource complementation in space and time to interconnect the neighboring autonomous micro-grids.An operation method combining hour-ahead optimization with real-time control is put forward in this paper,aimed at reducing generation cost and improving operation stability.From the aspect of hour-ahead optimization,a dispatching method of global optimization is proposed,which takes resource complementarity in space and time into consioderation.It is based on ultra-short term forecasting results and aims at a minimum generation cost.From the aspect of real-time coordination control,in view of the power fluctuation problem caused by randomness of wind resource,solar resource and load,a method of constant power control for the tie-line based on dynamic droop control strategy is proposed.It makes the power fluctuations distributed reasonably and economically.Finally in this paper,an example is executed in order to verify that the dispatching method of short-term optimization can promote resource complementation and reduce operation cost.The result of the real-time simulation confirms the validity of the dynamic droop control strategy for constant power control of the tie-line.
Key wordsMicro-gird interconnection    hour-ahead optimization    real-time control    dynamic droop control   
收稿日期: 2015-04-22      出版日期: 2016-11-21
PACS: TM732  
基金资助:国家高技术研究发展计划项目(863计划)(2014AA052001)资助。
作者简介: 刘 念 男,1981年生,博士,副教授,研究方向为智能配用电与微电网、电力信息安全等。E-mail:nian-liu@163.com(通信作者) 李岩松 男,1991年生,硕士研究生,研究方向为微电网运行与控制。E-mail:liyansong169@126.com
引用本文:   
刘念,李岩松,张建华,雷金勇. 微电网互联运行的分时优化与实时控制方法[J]. 电工技术学报, 2016, 31(21): 1-11. Liu Nian,Li Yansong,Zhang Jianhua,Lei Jinyong. Hour-Ahead Optimization and Real-Time Control Method    for Micro-Grid Interconnection. Transactions of China Electrotechnical Society, 2016, 31(21): 1-11.
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