以电网侧储能提升高比例可再生能源区域系统的可用输电容量  

Enhancing the available transfer capability of high-penetration renewable energy regional system by grid side energy storage

作　　者：陶力 刘建 王子涵 张琳 王剑晓 Tao Li;Liu Jian;Wang Zihan;Zhang Lin;Wang Jianxiao(Nari Group Corporation/State Grid Electric Power Research Institute,Nanjing 210003,China;Beijing Kedong Electric Power Control System Co.,Ltd.,Beijing 100194,China;North China Electric Power University,School of Electrical and Electronic Engineering,Beijing 102206,China)

机构地区：[1]南瑞集团有限公司国网电力科学研究院有限公司,江苏南京210003 [2]北京科东电力控制系统有限责任公司,北京100194 [3]华北电力大学电气与电子工程学院,北京102206

出　　处：《可再生能源》2021年第10期1394-1400,共7页Renewable Energy Resources

基　　金：国家电网科技项目(5418-201916163A-0-0-00)。

摘　　要：可用输电容量是电力交易可靠性的重要指标,已得到了广泛的应用。文章评估了电网侧储能对区域系统可用输电容量的影响,提出了一种考虑储能系统负荷转移能力的两阶段ATC评估框架。该架构在第一阶段建立了发电机和储能联合调度的日前机组组合模型,并基于场景的随机规划方法来描述可再生能源和负荷的不确定性。架构在第二阶段利用实时ATC模型,量化联络线功率的实时交易的最大传输容量。通过对IEEE 14节点,IEEE 30节点系统的算例研究分析表明,文章所提架构可以促进可再生能源消纳,增大了实时的区域可用输电容量。Available transmission capacity(ATC),as an important index to measure the reliability of interchange power trading,has been widely employed and investigated in existing studies and projects.With the development of industry revolution of renewable energy,energy storage(ES)technology has developed rapidly,which can take advantage of responsive capability to flexibly shift peak load to valley hours,so as to effectively enhance ATC ofhigh-penetration renewable energy regional system.However,the impacts of ES on ATC have not been studied systematically.To fill this gap,we evaluate the contributions of grid side ES to ATC of regional system in this paper.A two-stage ATC evaluation framework is proposed considering the load shifting capability of ES.In the first stage,a day-ahead unit commitment model is developed to schedule generators and ES.Scenario-based stochastic programming is adopted to describe the uncertainty of renewable energy power and load.In the second stage,a real-time ATC model is used to quantify the maximum capacity of further interchange power trading.Case studies based on the IEEE 14-bus system and IEEE 30-bus system show that ES enhances the real-time regional ATCwhile improving renewable energy accommodation of power system.

关 键 词：可用输电容量 储能 联络线功率交易 可再生能源 

分 类 号：TK51[动力工程及工程热物理—热能工程] TK81