本文選題：海洋能　切入點(diǎn)：儲(chǔ)能　出處：《華北電力大學(xué)》2014年碩士論文

【摘要】：海洋能的發(fā)電功率隨著外界環(huán)境和氣候條件的改變而發(fā)生變化,具有不可預(yù)測(cè)性,為了使發(fā)電機(jī)即使在負(fù)荷波動(dòng)較快或者系統(tǒng)達(dá)到峰荷時(shí)都能夠運(yùn)行在一個(gè)穩(wěn)定的電能輸出水平,可以在供電系統(tǒng)中加入相匹配容量的儲(chǔ)能裝置。使得發(fā)電機(jī)即使在負(fù)荷波動(dòng)較快或者系統(tǒng)達(dá)到峰荷時(shí)都能夠運(yùn)行在一個(gè)穩(wěn)定的電能輸出水平。 本文依靠“海上波浪能與風(fēng)能互補(bǔ)發(fā)電平臺(tái)的研發(fā)”和“300kW海洋能集成供電系統(tǒng)研究與示范”這兩大項(xiàng)目,在考慮對(duì)比了各個(gè)儲(chǔ)能裝置各自的特征及優(yōu)缺點(diǎn)后,確定了鉛酸蓄電池和超級(jí)電容器作為兩大項(xiàng)目中的儲(chǔ)能裝置。 首先,本文研究了供電系統(tǒng)中鉛酸蓄電池的各種充放電方法,在進(jìn)行了對(duì)比分析后,決定采用變電流充電方法為蓄電池進(jìn)行充電,采用放電深度控制方法對(duì)蓄電池進(jìn)行放電管理,利用Matlab/SIMULINK平臺(tái)建立包括儲(chǔ)能系統(tǒng)的發(fā)電系統(tǒng)仿真模型,并進(jìn)行了仿真分析,仿真結(jié)果證明了所設(shè)計(jì)的控制算法能夠有效地避免蓄電池的過充與過放,極大的延長(zhǎng)了蓄電池的使用壽命。 其次,本文研究設(shè)計(jì)了基于蓄電池儲(chǔ)能的風(fēng)浪互補(bǔ)供電系統(tǒng)結(jié)構(gòu),由三相永磁發(fā)電機(jī)、不控整流、Boost升壓斬波器、儲(chǔ)能控制系統(tǒng)、逆變器構(gòu)成,設(shè)計(jì)了供電系統(tǒng)的控制方案,基于Matlab/SIMULINK仿真平臺(tái)建立無儲(chǔ)能的供電系統(tǒng)與加入儲(chǔ)能的供電系統(tǒng)的仿真模型,仿真比較結(jié)果表明,加入蓄電池儲(chǔ)能裝置的供電系統(tǒng),電壓、頻率相比無儲(chǔ)能系統(tǒng)更加穩(wěn)定,滿足負(fù)載變動(dòng)對(duì)于功率以及電能質(zhì)量的要求。 最后,本文針對(duì)多個(gè)發(fā)電機(jī)輸出的海洋能供電系統(tǒng)設(shè)計(jì)了由蓄電池組和超級(jí)電容器構(gòu)成的混合儲(chǔ)能系統(tǒng),該系統(tǒng)通過雙向變流器接入交流母線中,通過濾波器將發(fā)電機(jī)輸出功率分為高頻和低頻部分,分別由超級(jí)電容和蓄電池承擔(dān),蓄電池采用恒流充電和恒壓充電相結(jié)合的控制方法,超級(jí)電容器采用雙環(huán)閉環(huán)控制,外環(huán)功率環(huán),內(nèi)環(huán)電流環(huán),從而使超級(jí)電容器輸出功率跟隨設(shè)定值,由Matlab/SIMULINK仿真結(jié)果可以看出,該控制方法可以實(shí)現(xiàn)蓄電池組大范圍儲(chǔ)能,超級(jí)電容器削峰填谷,支撐瞬時(shí)電壓的功能。
[Abstract]:the power generation power of the ocean energy changes with the change of the external environment and the climatic conditions , and has the non - predictability , so that the energy storage device with matching capacity can be added in the power supply system in order to enable the generator to operate at a stable electric energy output level even when the load fluctuation is fast or the system reaches the peak load , so that the generator can operate at a stable electric energy output level even when the load fluctuation is fast or the system reaches the peak load .

Based on the research and demonstration of offshore wave energy and wind energy complementary power generation platform and research and demonstration of 300kW ocean energy integrated power supply system , this paper considers the characteristics and advantages and disadvantages of each energy storage device , and determines lead - acid storage battery and super capacitor as energy storage devices in two large projects .

Firstly , the charging and discharging methods of lead - acid batteries in power supply system are studied . After the comparative analysis , the method of variable current charging is used to charge the storage battery . The simulation model of the power generation system including the energy storage system is established by using the Matlab / Simulink platform , and the simulation analysis is carried out . The simulation results show that the designed control algorithm can effectively avoid the overcharge and excessive discharge of the storage battery , and greatly prolong the service life of the storage battery .

Secondly , the structure of the wind wave complementary power supply system based on battery energy storage is designed . The control scheme of power supply system is designed by three - phase permanent magnet generator , non - controlled rectifier , Boost step - up chopper , energy storage control system and inverter . The simulation results show that the power supply system , voltage and frequency added to the storage battery of storage battery are more stable than the energy storage system .

finally , a hybrid energy storage system consisting of a storage battery pack and a super capacitor is designed aiming at the ocean energy power supply system output by a plurality of generators ; the system is connected with an alternating current bus through a bidirectional converter ; the output power of the generator is divided into a high frequency and a low frequency part by a filter ;

【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM612;P743

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本文編號(hào)：1730015