本文選題：風力發(fā)電　切入點：儲能電池　出處：《電子科技大學》2014年碩士論文　論文類型：學位論文

【摘要】：風力發(fā)電是解決能源短缺和環(huán)境污染問題的有效途徑,在保證能源、電力和經(jīng)濟可持續(xù)發(fā)展方面具有重要戰(zhàn)略地位。隨著風電并網(wǎng)規(guī)模的擴大,風能所固有的隨機性強、波動性大和間歇性特點對電力系統(tǒng)頻率、電壓及穩(wěn)定性帶來的負面影響已經(jīng)變得不容忽視。利用儲能系統(tǒng)的有功及無功吞吐能力,實時調控風電入網(wǎng)功率,從而在實現(xiàn)風能最大化利用的同時最小化其對電網(wǎng)的不利影響,成為一項重要的研究課題。本文基于電池儲能系統(tǒng),以平抑風電輸出功率波動主,電壓支撐為輔,對儲能系統(tǒng)的有功及無功調控策略進行了詳細研究,主要在以下幾方面開展了工作:1.為確定波動平抑目標,本文研究了風電機組的有功功率波動特性以及電力系統(tǒng)的頻率響應特性�；陲L電場輸出功率波動頻譜分析,研究風電場儲能配置結構,為風電場確定儲能安裝位置提供依據(jù)。2.基于定時間常數(shù)濾波的常規(guī)波動平抑策略,在有限儲能容量情況下難以同時兼顧長期平抑效果及儲能壽命,針對此問題,本文計及儲能充放電能力,提出了一種改進的儲能系統(tǒng)有功控制策略。本策略基于可變時間常數(shù)濾波和荷電狀態(tài)(state of charge,SOC)直接反饋控制,根據(jù)儲能剩余電量實時調節(jié)儲能系統(tǒng)輸出功率,改善平抑效果并優(yōu)化儲能壽命。3.分析了無功功率對電壓的支撐作用,研究了利用儲能系統(tǒng)調節(jié)風電入網(wǎng)點電壓的無功補償控制策略。為不影響有功波動平抑,進而分析了儲能系統(tǒng)最大無功能力,對電壓環(huán)輸出動態(tài)限幅,以保證系統(tǒng)的正常運行。4.利用MATLAB/Simulink仿真軟件仿真驗證了本文策略在平抑風電場有功功率波動、延長儲能壽命、維持風電場入網(wǎng)節(jié)點電壓上的有效性,降低了風電并網(wǎng)對電網(wǎng)的沖擊。
[Abstract]:Wind power generation is an effective way to solve the problem of energy shortage and environmental pollution, and has an important strategic position in ensuring the sustainable development of energy, electricity and economy. The negative effects of large volatility and intermittent characteristics on the frequency, voltage and stability of power system have become more and more important. By using the active and reactive power capacity of the energy storage system, the power of wind power entering the network can be adjusted in real time. Therefore, it has become an important research topic to maximize the utilization of wind energy and minimize its adverse impact on the power grid. Based on the battery energy storage system, the main task of this paper is to stabilize the output power fluctuation of wind power, while the voltage support is secondary. The active and reactive power control strategies of energy storage system are studied in detail. In this paper, the active power fluctuation characteristics of wind turbine and the frequency response characteristics of power system are studied. Based on the spectrum analysis of wind farm output power fluctuation, the configuration of wind farm energy storage is studied. This paper provides a basis for determining the location of energy storage installation in wind farms. The conventional wave stabilization strategy based on constant time constant filtering is difficult to take into account the long-term calming effect and energy storage life simultaneously in the case of limited energy storage capacity. In this paper, an improved active power control strategy for energy storage system is proposed, which is based on variable time constant filtering and state of charge SOC-based direct feedback control. The output power of the energy storage system is adjusted in real time according to the residual energy quantity of energy storage, which improves the stabilization effect and optimizes the energy storage life. 3. The supporting effect of reactive power on the voltage is analyzed. In this paper, the reactive power compensation control strategy for regulating wind power entry network voltage by energy storage system is studied. In order not to affect the active power fluctuation, the maximum reactive power capacity of the energy storage system is analyzed, and the output dynamic amplitude of the voltage loop is also analyzed. In order to ensure the normal operation of the system .4.Using MATLAB/Simulink simulation software to verify the effectiveness of this strategy in stabilizing the active power fluctuation of wind farm, prolonging the life of energy storage and maintaining the voltage of the node in the wind farm. Reduce the impact of wind power grid connection.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM614;TM727

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