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山东大学学报 (工学版) ›› 2019, Vol. 49 ›› Issue (4): 123-129.doi: 10.6040/j.issn.1672-3961.0.2018.554

• 电气工程 • 上一篇    下一篇

基于层次分析法的梯次利用电池储能系统运行性能量化评估

李先栋1(),王飞2,曹永吉3,*(),王李龑1,王琳1,卢奕3,刘子菡3   

  1. 1. 国网山东省电力公司聊城供电公司, 山东 聊城 252200
    2. 国网山东省电力公司,山东 济南 250001
    3. 山东大学电网智能化调度与控制教育部重点实验室, 山东 济南 250061
  • 收稿日期:2018-05-04 出版日期:2019-08-20 发布日期:2019-08-06
  • 通讯作者: 曹永吉 E-mail:fazhancehuabu@126.com;caoyongji1991@163.com
  • 作者简介:李先栋(1982—),男,山东聊城人,工程师,主要研究方向为电网规划和新能源发电技术. E-mail: fazhancehuabu@126.com
  • 基金资助:
    国网山东省电力公司科技项目资助(2018A-021)

Analytic hierarchy process based quantitative performance evaluation of second-use battery energy storage system

Xiandong LI1(),Fei WANG2,Yongji CAO3,*(),Lilong WANG1,Lin WANG1,Yi LU3,Zihan LIU3   

  1. 1. Liaocheng Power Supply Company, State Grid Shandong Electric Power Company, Liaocheng 252200, Shandong, China
    2. State Grid Shandong Electric Power Company, Jinan 250001, Shandong, China
    3. Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, Shandong, China
  • Received:2018-05-04 Online:2019-08-20 Published:2019-08-06
  • Contact: Yongji CAO E-mail:fazhancehuabu@126.com;caoyongji1991@163.com
  • Supported by:
    国网山东省电力公司科技项目资助(2018A-021)

摘要:

针对主动配电网中梯次利用电池储能系统运行性能评估问题,考虑梯次利用电池储能系统运行效益和电气量特征,提出一种基于层次分析的评估方法。构建储能系统运行性能量化评估框架,以主配网功率交换量和波动性改善程度为指标衡量储能系统运行效益,以并网点电压波动、三相不平衡度和电流谐波含量为指标衡量储能系统运行电气量特征。利用层次分析法确定各同层量化指标间的相对权重,由底层量化指标逐层向上线性加权计算得到储能系统运行性能综合评估指标值。研制基于动态重构策略的15 kW/30 (kW·h)梯次利用电池储能系统样机,在某典型高可再生能源渗透率主动配网中进行为期10 d的现场挂网试验,以试验数据为算例对提出方法的有效性进行验证。算例分析表明:梯次利用电池储能系统运行电气量特征良好,能够减少主配网功率交换量,平抑功率波动,提高可再生能源消纳。

关键词: 主动配电网, 梯次利用电池, 层次分析法, 量化评估

Abstract:

In order to assess the operation performance of second-use battery energy storage system, a comprehensive assessment method was proposed based on the analytic hierarchy process, in which the operation benefits and electrical characteristics were considered simultaneously. A quantitative assessment frame was constructed, where the amount and fluctuation of exchanging power between the active distribution network and the main grid were utilized to quantify the operation benefits and the voltage fluctuation, three-phase imbalance factor and harmonic current of grid-connection point were utilized to quantify the electrical characteristics. The weights of indices at the same level were obtained by the analytic hierarchy process and the comprehensive index value was calculated by the weighted summing of quantitative index values. 15 kW/30 (kW·h) prototype of second-use battery energy storage system was developed based on the dynamic reconstructing strategy and applied to the ten-day on-line test, from which the field data were obtained and used to validate the effectiveness of the proposed method. The case study results indicated that the second-use battery energy storage system had satisfactory electrical characteristics and could decrease the exchanging power, smooth the power fluctuation and improve the renewable energy accommodation.

Key words: active distribution network, second-use battery, analytic hierarchy process, quantitative evaluation

中图分类号: 

  • TM61

图1

SUBESS运行性能评估框架"

图2

试验ADN拓扑结构示意图"

图3

SUBESS样机挂网试验现场"

表1

分布式电源装机容量"

分布式电源装机容量/kW
PV 122
PV 227
PV 315
PV 427
PV 530
PV 630
SUBESS15

表2

试验采集数据信息"

数据类型时间分辨率
ADN并网点电压和电流1 ms/1 ms
SUBESS响应功率100 ms
SUBESS并网点电压和电流7.5 s/1 h
光伏发电功率1 min
三相负荷电压和电流1 h/1 h

图4

上网功率交换量对比"

表3

上网功率交换量评估结果"

%
Re, oRe, bCr
12.1610.3614.78

图5

上网功率波动性对比"

表4

上网功率波动性评估结果"

%
Se, oSe, bCv
169.09149.7611.43

表5

电压波动性与三相不平衡度计算结果"

%
样机是/否并网电压变异系数SgRg, maxDg, max
0.387 02.297 62.731 4
0.455 22.601 83.140 2

表6

电流谐波含量计算结果"

%
评估指标样机并网前Hg样机并网后Hg
A相电流0.578 10.971 1
B相电流0.542 01.292 2
C相电流0.548 91.377 8
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