本文關(guān)鍵詞：電動汽車充電站儲能緩沖控制策略與在線監(jiān)測系統(tǒng)設(shè)計　出處：《重慶大學》2014年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 電動汽車 充電站 儲能緩沖系統(tǒng) 狀態(tài)評估 在線監(jiān)測

【摘要】：本論文受國家自然科學基金（51277184）和輸配電裝備及系統(tǒng)安全與新技術(shù)國家重點實驗室自主研究項目（2007DA10512709209）資助。 隨著電動汽車的不斷普及，充電負荷大規(guī)模接入將對電網(wǎng)的電能質(zhì)量、網(wǎng)絡(luò)損耗、設(shè)備利用率等產(chǎn)生不容忽視的影響，其作為典型的諧波源，還將對其他負荷、發(fā)電機以及監(jiān)控、計量等設(shè)備產(chǎn)生不利影響。為減緩高密度充電負荷對配電網(wǎng)的沖擊，可在充電站配置儲能裝置，以滿足配電網(wǎng)有功功率爬坡速率的要求；同時還需對電動汽車、充電設(shè)施及其他設(shè)備的運行狀態(tài)進行全面監(jiān)測，以保證為電動汽車提供安全、高效的充電服務(wù)。因此，對充電站中儲能緩沖系統(tǒng)運行方式及其控制策略的研究和電動汽車及充電設(shè)施的監(jiān)測和評估具有重要意義。論文主要內(nèi)容如下： ○1利用儲能緩沖系統(tǒng)補償電動汽車快速充電的脈沖功率，提出計及配電網(wǎng)有功變化率限值的儲能緩沖系統(tǒng)運行方式和電流控制策略。該運行方式以不同類型蓄電池的快速充電功率特性為基礎(chǔ)，利用充電負荷與配電網(wǎng)注入功率之間的關(guān)系，確定儲能緩沖系統(tǒng)的不同運行方式；結(jié)合儲能緩沖系統(tǒng)的運行方式，以充電負荷電流和配電網(wǎng)注入電流為參考，生成儲能緩沖系統(tǒng)電流控制策略方案。利用Matlab/Simulink搭建含儲能緩沖系統(tǒng)的快速充電站模型，分析不同電動汽車脈沖充電功率下儲能緩沖系統(tǒng)動態(tài)特性，驗證所提出儲能緩沖系統(tǒng)控制策略的正確性和有效性。 ○2基于電動汽車電氣關(guān)鍵部件的狀態(tài)指標，建立電動汽車狀態(tài)綜合評估指標體系。該指標體系首先根據(jù)變流器、蓄電池組和電動機的結(jié)構(gòu)，選取能反應(yīng)其狀態(tài)的指標，詳細介紹各項指標的計算方法，利用各項指標的相關(guān)性對其進行分類，并剔除貢獻率小的指標；根據(jù)改進雷達圖法對電動汽車的運行狀態(tài)進行綜合評估。 ○3設(shè)計和開發(fā)一套電動汽車充電站監(jiān)測、分析和評估系統(tǒng)。首先設(shè)計該系統(tǒng)的功能需求；基于配電變壓器、充電機的監(jiān)測數(shù)據(jù)，，分析其運行特性；通過電動汽車的各項監(jiān)測數(shù)據(jù)，統(tǒng)計分析電動汽車起始充電時間、起始荷電狀態(tài)和日行駛里程的概率分布，實時顯示電動汽車狀態(tài)綜合評估結(jié)果。由監(jiān)測系統(tǒng)的實測數(shù)據(jù)表明：電動汽車充電過程中電流諧波較大，且隨充電功率增加而減小，動力電池的性能會因為快速充、放電而下降。
[Abstract]:This paper is funded by the National Natural Science Foundation of China (51277184) and the National Key Laboratory of safety and new technology in transmission and distribution equipment and system (2007DA10512709209).
With the growing popularity of electric vehicles, charging load of large-scale access will loss on the power quality, the network can not be ignored, and utilization ratio of equipment, as a typical harmonic source, will also be on the other load, generator and monitor, adversely affect the metering equipment. To alleviate the high density of charging load on power distribution the impact of the network, can device in charging station configuration storage, in order to meet the power requirements of the power ramp rate; at the same time the need for electric vehicles, a comprehensive monitoring running state of charging facilities and other equipment, to ensure the safety for electric vehicle charging service, high efficiency. Therefore, is of great significance to the charging station study on monitoring and evaluation of energy storage buffer system and its control strategy and operation mode of electric vehicle and charging facilities. The main contents are as follows:
1, the use of energy storage pulsed power system of electric vehicle fast charging buffer compensation, and proposed the power change rate limit of the energy storage buffer system operation mode and the current control strategy. The operation mode based on fast charging power characteristics of different types of batteries, the use of charging load and distribution network into the relationship between power sure, the storage buffer system in different operation mode; operation mode with the energy storage buffer system, in charge of load current and injection current distribution network for reference, the buffer system current control scheme to generate energy. Fast charging structures with energy storage buffer system using Matlab/Simulink station model, analysis of the pulse charging power of energy storage the dynamic characteristics of different buffer systems of electric vehicles, energy storage to verify the proposed control strategy is correct and effective buffer system.
2, based on the index of state key components of electric vehicle, the establishment of comprehensive evaluation index system of electric vehicle. The index system according to the structure of converter, battery and motor, can choose the reaction condition index, calculation method of detailed indicators, classification based on the correlation of each index, and eliminate the contribution rate of small index; comprehensive assessment according to the operation state of the electric vehicle improved radar chart.
3 monitoring stations, the design and development of a set of electric vehicle charging, analysis and evaluation system. First, design the function requirements of the system; based on the monitoring data of distribution transformer, charger, analyze its operating characteristics; through the monitoring data of electric vehicles, electric vehicle charging statistics starting time, state of charge and start to run on the probability distribution of the electric vehicle mileage, real-time display of state comprehensive assessment results indicated by measured data. The monitoring system: electric vehicle charging current harmonic process is large, and with the charging power increases, the performance of power battery for fast charging, discharge and drop.

【學位授予單位】：重慶大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U469.72;TM910.6

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