發(fā)布時(shí)間：2018-01-11 16:42

  本文關(guān)鍵詞：超導(dǎo)磁儲(chǔ)能系統(tǒng)在微電網(wǎng)中的應(yīng)用及其狀態(tài)評(píng)估方法研究　出處：《華中科技大學(xué)》2016年博士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 微電網(wǎng) 超導(dǎo)磁儲(chǔ)能 虛擬慣量 頻率穩(wěn)定性 模糊控制 超導(dǎo)磁體熱穩(wěn)定性 SMES狀態(tài)評(píng)估方法 場(chǎng)路耦合

【摘要】：近年來(lái),能源短缺、環(huán)境污染已經(jīng)引起世界各國(guó)對(duì)節(jié)能降耗的重視。利用清潔、可再生能源的分布式發(fā)電技術(shù)為節(jié)能降耗、提高供電可靠性提供了一種新思路。微電網(wǎng)技術(shù)是解決清潔、可再生能源并網(wǎng)問(wèn)題的有效手段。儲(chǔ)能裝置作為微電網(wǎng)的重要組成部分,對(duì)于改善微電網(wǎng)運(yùn)行特性,提高其運(yùn)行穩(wěn)定性和可靠性具有重要意義。超導(dǎo)磁儲(chǔ)能(Superconducting Magnetic Energy Storage, SMES)系統(tǒng)具有快速響應(yīng)和高功率密度的特點(diǎn),能夠快速大幅調(diào)整其與微電網(wǎng)或大電網(wǎng)間的功率交換,可以對(duì)微電網(wǎng)的瞬時(shí)功率不平衡進(jìn)行調(diào)節(jié)。因此,可以將SMES應(yīng)用到微電網(wǎng)中以改善微電網(wǎng)的運(yùn)行特性。本文在國(guó)家973計(jì)劃和863計(jì)劃項(xiàng)目的資助下,從理論分析、數(shù)學(xué)建模、特性仿真、控制策略到實(shí)驗(yàn)驗(yàn)證等方面對(duì)SMES在微電網(wǎng)中的應(yīng)用開(kāi)展研究工作,并提出了SMES狀態(tài)評(píng)估方法以明確超導(dǎo)磁體熱穩(wěn)定性對(duì)SMES系統(tǒng)運(yùn)行特性的影響。本文的主要工作和取得的成果如下：(1)針對(duì)SMES在微電網(wǎng)中分散化應(yīng)用形式,研究基于SMES改善微電網(wǎng)頻率穩(wěn)定性的可行性和控制方法。設(shè)計(jì)了基于虛擬慣量的SMES控制策略以解決微電網(wǎng)慣性小的問(wèn)題,提高微電網(wǎng)運(yùn)行的頻率穩(wěn)定性。考慮SMES功率輸出范圍的限制,設(shè)計(jì)了基于模糊控制的電流調(diào)整策略,對(duì)超導(dǎo)磁體電流進(jìn)行動(dòng)態(tài)調(diào)整,保障超導(dǎo)磁體的熱穩(wěn)定性。仿真分析結(jié)果驗(yàn)證了所提出的控制及電流調(diào)整策略的有效性。(2)以SMES在含電動(dòng)汽車(chē)充電站微電網(wǎng)中的應(yīng)用為背景,提出一種新型基于直流母線(xiàn)的電動(dòng)汽車(chē)充電站拓?fù)�。通過(guò)設(shè)計(jì)SMES的功率控制策略,提高充電站直流母線(xiàn)電壓的穩(wěn)定性。在此基礎(chǔ)上,針對(duì)電動(dòng)汽車(chē)快速充電站充電功率變化率較大的問(wèn)題,提出一種基于SMES控制的能量管理策略以降低電動(dòng)汽車(chē)快速充電功率的變化率,降低其對(duì)微電網(wǎng)以及配電網(wǎng)的影響,提高其頻率穩(wěn)定性。仿真分析驗(yàn)證了所提出控制及能量管理策略的有效性。(3)綜合考慮SMES與微電網(wǎng)或電力系統(tǒng)之間的相互作用和影響,提出并構(gòu)建了SMES狀態(tài)評(píng)估方法。在對(duì)SMES功率輸出特性進(jìn)行定量分析的基礎(chǔ)上,研究SMES動(dòng)態(tài)運(yùn)行特性對(duì)超導(dǎo)磁體熱穩(wěn)定性的影響,將超導(dǎo)磁體電流和溫度這兩個(gè)主要的影響因素進(jìn)行整合,得到SMES狀態(tài)評(píng)估方法的具體表達(dá)式。通過(guò)對(duì)150 kJ高溫超導(dǎo)磁儲(chǔ)能系統(tǒng)進(jìn)行功率調(diào)節(jié)實(shí)驗(yàn)、動(dòng)模實(shí)驗(yàn),驗(yàn)證了SMES狀態(tài)評(píng)估方法在電力系統(tǒng)應(yīng)用中的有效性。(4)為了進(jìn)一步系統(tǒng)、準(zhǔn)確地構(gòu)建SMES狀態(tài)評(píng)估系統(tǒng),提出了基于場(chǎng)路耦合的SMES建模方法,對(duì)SMES狀態(tài)評(píng)估方法進(jìn)行延伸和拓展研究。采用所提出的場(chǎng)路耦合法建立了150Kj SMES超導(dǎo)磁體的模型,仿真分析結(jié)果與實(shí)驗(yàn)結(jié)果具有相同的變化趨勢(shì),能夠更加真實(shí)地反映SMES的實(shí)際運(yùn)行特性。此外,所提出的基于場(chǎng)路耦合的建模方法也可以拓展應(yīng)用到其它超導(dǎo)電力裝置。
[Abstract]:In recent years, energy shortage, environmental pollution has attracted worldwide attention. On energy saving and utilization of clean renewable energy, distributed generation technology for energy saving, provides a new way to improve the reliability of power supply. The micro grid technology is a effective means of clean, renewable energy grid problem. The energy storage device is an important part of micro the power grid, to improve the operating characteristics of the micro grid, which is of great significance in improving the operation stability and reliability. The superconducting magnetic energy storage (Superconducting Magnetic Energy Storage, SMES) system has fast response and high power density characteristics, can quickly adjust its exchange and a micro grid power system or power can be instantaneous power on the micro grid unbalanced regulation. Therefore, SMES can be applied to the micro grid to improve the operating characteristics of the micro grid. Based on the national 973 Plan And the 863 project funding, analysis, mathematical modeling, simulation of control strategy from theory to experimental verification and other aspects to carry out research work on the application of SMES in micro grid, and puts forward the evaluation method of SMES state the effect of the thermal stability of the superconducting magnet on the operation performance of SMES system. The main work and results the results are as follows: (1) for SMES in the micro grid distributed application form, feasibility study and control method of SMES to improve the frequency stability of the microgrid. Based on the design of the virtual inertia control strategy of SMES to solve the problem of microgrid based on small inertia, improve the frequency stability of microgrid operation. Considering the SMES power output range the design of the current limit adjustment strategy based on fuzzy control, dynamic adjustment of the superconducting magnet current, the thermal stability of the superconducting magnet protection. The simulation results verify the analysis The effectiveness of current control and adjustment strategies. (2) to SMES in an electric vehicle charging station micro grid application as the background, puts forward a new type of electric vehicle charging station based on DC bus topology. Through the design of SMES power control strategy, improve the stability of the DC bus voltage charging station in this paper. Aiming at the fast charging station, large power change rate of electric vehicles, a change in order to reduce the electric vehicle fast charging power rate of energy management strategy based on SMES control, reduce the impact on the micro grid and the distribution network, to improve its frequency stability. Simulation results validate the effectiveness of the proposed control and energy management strategy. (3) considering the interaction and influence between SMES and micro grid or power system, is proposed. The evaluation method of SMES state and output characteristics of SMES power On the basis of quantitative analysis, influence on the operational characteristics of dynamic SMES on the thermal stability of the superconducting magnet, the two main influencing factors of superconducting magnet current and temperature integration, specific expression evaluating method from SMES state. The 150 kJ high temperature superconducting magnetic energy storage power regulation experimental system, dynamic simulation, to verify the validity of the evaluation method of SMES in power system applications. (4) in order to accurately construct SMES system, assessment system, and puts forward the method of SMES modeling based on field circuit coupled method, the state of the SMES evaluation method and extended research. Presented 150Kj SMES superconducting magnet model using field the road is proposed, simulation results and experimental results have the same trend, the actual operating characteristics can more accurately reflect the SMES. In addition, the proposed based on field circuit coupling The modeling method can also be extended to other superconducting power devices.

【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TM26;TM732
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本文編號(hào)：1410383