本文選題：風(fēng)光儲(chǔ)聯(lián)合發(fā)電系統(tǒng) + 動(dòng)態(tài)等值模型��； 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：隨著并網(wǎng)風(fēng)光儲(chǔ)聯(lián)合發(fā)電系統(tǒng)容量的不斷增加,由風(fēng)能、太陽能的間歇性、隨機(jī)性所帶來的出力波動(dòng)對電力系統(tǒng)造成的影響日益凸顯。因此,有必要對發(fā)電系統(tǒng)的有功功率輸出特性加以分析,建立合適的系統(tǒng)動(dòng)態(tài)模型,以評估其接入電力系統(tǒng)所產(chǎn)生的影響,并為有功功率控制算法的研究提供指導(dǎo)。本文結(jié)合詳細(xì)模型仿真過程復(fù)雜的實(shí)際,在考慮風(fēng)光儲(chǔ)聯(lián)合發(fā)電系統(tǒng)結(jié)構(gòu)及運(yùn)行特性的基礎(chǔ)上,研究了系統(tǒng)等值建模的總體方法,并針對風(fēng)、光發(fā)電單元之間運(yùn)行點(diǎn)差異較大的特點(diǎn),提出了一種用于有功功率輸出特性分析的多機(jī)表征動(dòng)態(tài)等值建模方法。具體研究內(nèi)容如下:1.根據(jù)風(fēng)光儲(chǔ)聯(lián)合發(fā)電系統(tǒng)及其子系統(tǒng)的結(jié)構(gòu)、動(dòng)態(tài)運(yùn)行特性,研究了發(fā)電系統(tǒng)等值建模的總體方法。該方法首先根據(jù)單元機(jī)組的構(gòu)成和運(yùn)行原理,建立單元級機(jī)組模型;再按照風(fēng)、光、儲(chǔ)三個(gè)組成部分,分別進(jìn)行場級等值建模;最后將場級模型相組合,建立發(fā)電系統(tǒng)的動(dòng)態(tài)等值模型。2.在場級等值建模方面,針對風(fēng)、光各發(fā)電單元之間運(yùn)行點(diǎn)差異較大的特點(diǎn),提出了一種基于模糊聚類算法的多機(jī)表征等值建模方法,用于雙饋風(fēng)電場、光伏發(fā)電系統(tǒng)的有功功率輸出特性分析。該方法提取了能夠表征雙饋感應(yīng)風(fēng)力發(fā)電機(jī)組(DFIG)、光伏發(fā)電單元有功功率輸出特性的指標(biāo);并將模糊C-均值聚類算法(FCM)首次應(yīng)用到風(fēng)電場、光伏發(fā)電系統(tǒng)的等值建模中,通過對指標(biāo)數(shù)據(jù)進(jìn)行聚類分析,得到機(jī)組分群結(jié)果;最后,將風(fēng)、光機(jī)組及集電系統(tǒng)參數(shù)等效聚合。對于電池儲(chǔ)能系統(tǒng),由于儲(chǔ)能單元的運(yùn)行狀態(tài)相近,則選擇單機(jī)表征法建立場級等值模型。3.在Matlab/Simulink環(huán)境下搭建風(fēng)光儲(chǔ)聯(lián)合發(fā)電系統(tǒng)動(dòng)態(tài)等值模型,針對系統(tǒng)的有功功率輸出特性,進(jìn)行了仿真實(shí)驗(yàn)。仿真結(jié)果表明:根據(jù)本文所提出動(dòng)態(tài)等值建模方法建立的系統(tǒng)模型,能夠有效表征發(fā)電系統(tǒng)的有功功率輸出特性,并且彌補(bǔ)了靜態(tài)模型無法實(shí)時(shí)反映發(fā)電系統(tǒng)動(dòng)態(tài)運(yùn)行特性的不足,同時(shí)簡化了模型、簡便了計(jì)算,該模型可適用于風(fēng)光儲(chǔ)聯(lián)合發(fā)電系統(tǒng)的有功功率動(dòng)態(tài)特性分析。
[Abstract]:With the continuous increase of the capacity of grid-connected wind-storage combined generation system, the impact of the intermittent and randomness of wind and solar energy on the power system is becoming more and more prominent. Therefore, it is necessary to analyze the active power output characteristics of the power generation system and establish a suitable system dynamic model to evaluate the impact of the power system access and provide guidance for the study of the active power control algorithm. Based on the complex simulation process of the detailed model and considering the structure and operation characteristics of the combined generation system, this paper studies the overall method of the system equivalent modeling, and aims at the wind, In this paper, a dynamic equivalent modeling method based on multi-machine representation for the analysis of active power output characteristics is proposed. The specific contents of the study are as follows: 1. According to the structure and dynamic operation characteristics of the wind storage combined generation system and its sub-system, the overall method of equivalent modeling of the generation system is studied. In this method, first of all, according to the composition and operation principle of the unit, the unit model of the unit is established; then according to the three components of wind, light and storage, the equivalent modeling of the field level is carried out respectively; finally, the field level model is combined together. The dynamic equivalent model of generation system. In the field of equivalent modeling, a multi-machine representation equivalent modeling method based on fuzzy clustering algorithm is proposed for wind and light generating units, which can be used in doubly-fed wind farms. Analysis of active power output characteristics of photovoltaic power generation system. This method extracts the indexes that can characterize the active power output characteristics of DFIGN and photovoltaic units of doubly-fed induction wind turbines, and applies the fuzzy C-means clustering algorithm to wind farm, photovoltaic system equivalent modeling for the first time. By cluster analysis of the index data, the cluster results of the units are obtained. Finally, the parameters of the wind, optical and collector systems are equivalent polymerized. For the battery energy storage system, the field equivalent model .3 is established by using the single machine representation method because of the similar operating state of the energy storage unit. The dynamic equivalent model of the combined wind and storage generation system is built in Matlab/Simulink environment, and the simulation experiment is carried out according to the active power output characteristics of the system. The simulation results show that the system model established by the dynamic equivalent modeling method proposed in this paper can effectively characterize the active power output characteristics of the power generation system. The static model can not reflect the dynamic characteristics of the generation system in real time. At the same time, the model is simplified and the calculation is simple. The model can be used to analyze the dynamic characteristics of active power in the combined generation system.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM61

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