一種小型海島獨立型微電網(wǎng)控制方案及應(yīng)用
魏陽,王萬純,徐光福,朱皓斌,王晨
(南京南瑞繼保電氣有限公司,江蘇 南京 211102)
摘 要:偏遠海島微電網(wǎng)存在柴發(fā)供電噪音大、環(huán)境污染的問題,分析并采用光儲運行、柴發(fā)備用的供電模式,并研究了海島光儲微電網(wǎng)運行控制策略。針對當前海島光儲微電網(wǎng)儲能充放電控制僅考慮荷電狀態(tài)(SOC)可能因為估算精度低導(dǎo)致電池電壓越限的問題,提出了一種儲能SOC和電池電壓聯(lián)合限光伏控制策略,該策略能有效避免微電網(wǎng)中儲能過電壓導(dǎo)致頻繁跳閘,同時延長電池使用壽命。在東部沿海某獨立型海島微電網(wǎng)中,實現(xiàn)并驗證了微電網(wǎng)運行模式以及控制策略的有效性和正確性。
關(guān)鍵詞:海島獨立型微網(wǎng);光儲;控制策略;運行模式;光伏限定功率控制
中圖分類號:TM727 文獻標識碼:B 文章編號:1007-3175(2020)05-0028-06
A Small Island-Alone Microgrid Control Scheme and Application
WEI Yang, WANG Wan-chun, XU Guang-fu, ZHU Hao-bin, WANG Chen
(NR Electric Co., Ltd, Nanjing 2111 02, China)
Abstract: Considering the problem in remote island-alone microgrid, such as high noise and environmental pollution caused by diesel power supply, the operation mode of optical storage operation and diesel generator standby is adopted and the operation control strategy of PV-energy microgrid is studied. In view of the battery overvoltage because of the current control strategy which ignores low estimation accuracy of the SOC, a combined photovoltaic limited control strategy of SOC and battery voltage is proposed, which can effectively solve the problem of frequent trip caused by cell overvoltage, thus prolonging the service life of battery. In an Island-alone microgrid along the eastern coast, the validity and correctness of the operation mode and control strategy are realized and verified.
Key words: island-alone microgrid; PV-energy; control strategy; operation mode; photovoltaic limited power control
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