文献标志码：A

含风电和储能的电力系统安全约束机组组合问题研究

刘建平1，王旭斌2，吴岩1，王忠为1，张洪力1，刘文1

(1．中电投蒙东能源集团有限责任公司，内蒙古通辽028011；

2．华北电力大学电气与电子工程学院，北京102206)

Research on Security-Constrained Unit Commitment of Power Systems with Wind Farm and Energy StorageLIU Jianping1，WANG Xubin2，WU Yan1，WANG Zhongwei1，ZHANG Hongli1，LIU Wen1

(1. CPI Mengdong Energy Group Co.,Ltd, Tongliao 028011，China; 2. School of Electrical & Electronic Engineering，

North China Electric Power University， Beijing 102206，China)

摘要：针对含风电的电力系统安全约束机组组合问题，利用储能的快速双向调节能力改善风电出力的波动性和不确定性，提高系统运行的经济性。机组组合模型中考虑风电、负荷预测误差对机组组合的影响，并引入基于可信理论的旋转备用机会约束条件，可避免造成备用的过度配置。另外，通过考虑合理弃风提高消纳风电能力和降低系统运行成本，分析了储能参数以及接入系统方式对机组组合模型中系统运行成本和风电弃风量的影响。最后，采用新英格兰10机系统验证了所提模型的有效性。

关键词：机组组合；风电；储能；预测误差；机会约束；弃风

文章编号：1007-2322(2015)05-0048-08

中图分类号：TM372

收稿日期：2015-01-31

作者简介：

Abstract：As to such issue as security-constrained unit commitment (SCUC) of power systems with wind farm, the volatility and uncertainty of wind power output are improved by means of the fast two-way regulation capacity of energy storage, then operation cost is also reduced. Taking the impact of prediction error of wind power and demand on SCUC into account, the over allocation of reserve can be avoided by introducing the chance constrained formulation of spinning reserve based on trusted theory. In addition, reasonable curtailment can be applied to enhance the accommodation capability of wind power and reduce operation cost. The impact of energy storage parameters and its grid-connected approach on system operation cost and wind curtailment in SCUC are also analyzed in this paper. In the end, 10-machine New England power system is used to validate the proposed model.

Keywords：unit commitment；wind power；energy storage；forecast error；chance constraint；wind curtailment

0引言

鉴于全球低碳经济和可持续发展的需求，包含风电、太阳能、储能等的新能源发电技术越来越受到重视。随着大电网中风电渗透率的不断增加，分析风电对电力系统机组组合和经济调度的影响已显得尤为重要。机组组合是电力系统运行调度的重要任务之一，包括在一定负荷水平下制定可调火电机组单元的开停机、出力计划[1]。机组组合模型一般以系统总运行成本最小为目标函数，满足的约束条件有系统功率平衡、备用容量约束、机组出力限制、机组开停机时间约束、网络安全约束等[2]。……