Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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一種基于混合儲(chǔ)能的低壓直流配電網(wǎng)母線電壓控制策略

來源:電工電氣發(fā)布時(shí)間:2017-01-24 15:24 瀏覽次數(shù):8
一種基于混合儲(chǔ)能的低壓直流配電網(wǎng)母線電壓控制策略
 
楊李星,嚴(yán)曉杰,周宇
(南京工程學(xué)院 電力工程學(xué)院,江蘇 南京 211167)
 
    摘 要:超級(jí)電容- 蓄電池混合儲(chǔ)能系統(tǒng)同時(shí)具有能量密度高和功率密度高的特點(diǎn),適用于平抑含有大量分布式能源接入的低壓直流配電網(wǎng)的電壓波動(dòng)。提出了一種基于混合儲(chǔ)能的母線電壓分區(qū)控制策略,對(duì)母線電壓實(shí)施5 層電壓控制,蓄電池用于穩(wěn)定波動(dòng)較小時(shí)的母線電壓,超級(jí)電容平抑母線電壓波動(dòng)較大時(shí)的功率差額,給出了一種根據(jù)母線電壓波動(dòng)的極端情況配置超級(jí)電容容量的方案。經(jīng)Matlab/Simulink 仿真,驗(yàn)證了該控制策略的可行性。
    關(guān)鍵詞:低壓直流配電網(wǎng);混合儲(chǔ)能;母線電壓;超級(jí)電容
    中圖分類號(hào):TM727     文獻(xiàn)標(biāo)識(shí)碼:A      文章編號(hào):1007-3175(2017)01-0030-05
 
A Kind of Busbar Voltage Control Strategy of Low-Voltage Direct Current
Power Distribution Network Based on Hybrid Energy Storage
 
YANG Li-xing, YAN Xiao-jie, ZHOU Yu
(School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China)
 
    Abstract: The super capacitor and battery hybrid energy storage system has the characteristics of high energy density and high power density, which is suitable to stabilize the voltage fluctuation of low-voltage direct current (LVDC) distribution network containing a large number of distributed energy. This paper presented a new bus voltage division control strategy based on hybrid energy storage to implement 5-level voltage control for bus voltage, using the battery to stabilize the smaller bus voltage and using super capacitor to stabilize power balance of the bigger voltage fluctuation, and presenting a scheme to configure the super capacitor capacity based on the extreme conditions of the bus voltage fluctuation. Finally, feasibility of the strategy is verified through the simulation based on Simulink in Matlab.
    Key words: low voltage direct current distribution network; hybrid energy storage; bus voltage; super capacitor
 
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