獨(dú)立光伏混儲(chǔ)系統(tǒng)穩(wěn)定運(yùn)行控制研究

 

李凡

（中國(guó)能源建設(shè)集團(tuán)湖南省電力設(shè)計(jì)院有限公司，湖南 長(zhǎng)沙 410007）

 

    摘 要：受環(huán)境影響的光伏電源輸出的最大功率總是波動(dòng)的，無(wú)法實(shí)現(xiàn)穩(wěn)定運(yùn)行、可靠供電。針對(duì)該問題，建立了獨(dú)立光伏混儲(chǔ)系統(tǒng)的結(jié)構(gòu)，介紹了光伏最大功率輸出控制，提出了混儲(chǔ)系統(tǒng)的波動(dòng)功率分配控制策略，以超級(jí)電容器的荷電狀態(tài)區(qū)域?yàn)榛A(chǔ)，對(duì)混儲(chǔ)系統(tǒng)充放電運(yùn)行狀態(tài)進(jìn)行可靠切換控制，充分發(fā)揮蓄電池和超級(jí)電容器的各自特性的優(yōu)點(diǎn)。仿真結(jié)果表明，獨(dú)立光伏混儲(chǔ)系統(tǒng)在設(shè)計(jì)的策略控制下可以穩(wěn)定運(yùn)行，平衡供電功率，滿足負(fù)荷對(duì)電能質(zhì)量的需求。

    關(guān)鍵詞：獨(dú)立光伏；混合儲(chǔ)能；穩(wěn)定運(yùn)行；狀態(tài)切換

    中圖分類號(hào)：TM615    文獻(xiàn)標(biāo)識(shí)碼：A     文章編號(hào)：1007-3175(2020)03-0020-03

    Abstract: The maximum power of photovoltaic power output affected by the environment is always fluctuating, so that it can’t realize the stable operation and reliable power supply.To solve this problem, this paper established a structure of independent photovoltaic system based on hybrid energy storage, introduced the maximum photovoltaic power output control and proposed the fluctuating power distribution control strategy of hybrid energy storage.Based on the state of charge of supercapacitor, the charge and discharge operation states of hybrid energy storage were reliably switching controlled, to give full play to the advantages of respective characteristics of batteries and super capacitors. Simulation results show that under the designed control of independent photovoltaic system based on hybrid energy storage can stably operate, balance supply power and meet the loads demand for power quality.

    Key words: independent photovoltaic; hybrid energy storage; stable operation; state switching