適用于系統(tǒng)分析的風(fēng)電與光伏降階模型研究
發(fā)布時(shí)間：2018-11-06 10:15
【摘要】：隨著風(fēng)力發(fā)電與光伏發(fā)電裝機(jī)容量的不斷增大,新能源并網(wǎng)研究成為當(dāng)前關(guān)注的熱點(diǎn),而開發(fā)適合系統(tǒng)分析用風(fēng)電和光伏模型是開展這些研究的基礎(chǔ)和關(guān)鍵。因此,本文對(duì)風(fēng)電模型降階方法、標(biāo)準(zhǔn)化模型、模型衍變機(jī)理、光伏降階模型及光伏接入系統(tǒng)分析進(jìn)行了深入研究。本文首先系統(tǒng)地論述了雙饋風(fēng)電機(jī)組模型的降階方法,主要針對(duì)發(fā)電機(jī)、變流器模型進(jìn)行降階,對(duì)于發(fā)電機(jī)模型,詳細(xì)分析了由電磁全階模型到電磁簡(jiǎn)化模型最后到機(jī)電暫態(tài)模型的衍變過程。通過機(jī)理建模的方法,針對(duì)風(fēng)電模型中動(dòng)態(tài)響應(yīng)最快、計(jì)算最耗時(shí)的發(fā)電機(jī)和變流器部分進(jìn)行重點(diǎn)分析,忽略發(fā)電機(jī)定子磁鏈暫態(tài)過程、逆變器開關(guān)動(dòng)作和逆變器內(nèi)環(huán)控制等快速動(dòng)態(tài)過程的影響,對(duì)關(guān)鍵部分進(jìn)行了降階處理,通過詳細(xì)的理論推導(dǎo),得到適用于系統(tǒng)分析的雙饋風(fēng)電機(jī)組通用降階模型。最后,在風(fēng)速擾動(dòng)和電網(wǎng)故障兩種情況下將降階模型與電磁全階模型進(jìn)行仿真對(duì)比。跟蹤了國(guó)際化學(xué)術(shù)組織對(duì)風(fēng)電模型的研究進(jìn)展,分析了通用型風(fēng)電模型的發(fā)展與衍變,對(duì)WECC第一版、WECC第二版和IEC三種風(fēng)電標(biāo)準(zhǔn)化模型進(jìn)行了詳細(xì)比較,包括模型的主要結(jié)構(gòu)差異與參數(shù)對(duì)應(yīng)關(guān)系。并對(duì)三種標(biāo)準(zhǔn)化模型進(jìn)行對(duì)比分析。對(duì)于光伏模型降階,通過詳細(xì)的理論推導(dǎo),簡(jiǎn)化光伏電磁模型中較為耗時(shí)的元件——逆變器,將其簡(jiǎn)化為一階慣性環(huán)節(jié),此外考慮其控制特性,基于注入功率法建立了適用于系統(tǒng)分析的光伏降階模型,包括光伏電池模塊、逆變器控制模塊、MPPT控制模塊、并網(wǎng)模塊和保護(hù)模塊,并給出了光伏發(fā)電系統(tǒng)各個(gè)模塊之間的變量傳遞關(guān)系。通過光伏電站接入實(shí)際電網(wǎng)驗(yàn)證了所建的光伏降階模型的正確性。
[Abstract]:With the increasing of installed capacity of wind power generation and photovoltaic power generation, the research of grid connection of new energy has become a hot topic at present, and the development of wind power and photovoltaic model suitable for system analysis is the basis and key of these studies. Therefore, the wind power model reduction method, standardized model, model evolution mechanism, photovoltaic reduction model and photovoltaic access system analysis are deeply studied in this paper. Firstly, this paper systematically discusses the method of reducing the order of the model of doubly-fed wind turbine, mainly aiming at the model of generator and converter, and for the model of generator. The evolution process from the full order electromagnetic model to the simplified electromagnetic model and to the electromechanical transient model is analyzed in detail. Through the method of mechanism modeling, the dynamic response of wind power model is the fastest and the most time-consuming part of generator and converter is analyzed, and the transient process of generator stator flux is ignored. Because of the influence of inverter switching operation and inverter inner loop control, the order reduction model of doubly-fed wind turbine is obtained through detailed theoretical derivation. Finally, the reduced order model and the full order electromagnetic model are simulated and compared in the case of wind speed disturbance and power network fault. The research progress of wind power models in international academic organizations is followed, and the development and evolution of general wind power models are analyzed. The first edition of WECC, the second edition of WECC and the three kinds of standardized models of wind power generation are compared in detail. Including the main structural differences of the model and the corresponding relationship between the parameters. Three standardized models are compared and analyzed. For photovoltaic model reduction, the inverter, which is a time-consuming component in the photovoltaic electromagnetic model, is simplified to a first-order inertial link by detailed theoretical derivation, and its control characteristics are considered. Based on the injection power method, a photovoltaic reduced-order model is established for system analysis, including photovoltaic cell module, inverter control module, MPPT control module, grid-connected module and protection module. The variable transfer relation between modules of photovoltaic system is also given. The correctness of the reduced order photovoltaic model is verified by connecting the photovoltaic power station to the actual grid.
【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】：2015
【分類號(hào)】：TM61
本文編號(hào)：2313990
[Abstract]:With the increasing of installed capacity of wind power generation and photovoltaic power generation, the research of grid connection of new energy has become a hot topic at present, and the development of wind power and photovoltaic model suitable for system analysis is the basis and key of these studies. Therefore, the wind power model reduction method, standardized model, model evolution mechanism, photovoltaic reduction model and photovoltaic access system analysis are deeply studied in this paper. Firstly, this paper systematically discusses the method of reducing the order of the model of doubly-fed wind turbine, mainly aiming at the model of generator and converter, and for the model of generator. The evolution process from the full order electromagnetic model to the simplified electromagnetic model and to the electromechanical transient model is analyzed in detail. Through the method of mechanism modeling, the dynamic response of wind power model is the fastest and the most time-consuming part of generator and converter is analyzed, and the transient process of generator stator flux is ignored. Because of the influence of inverter switching operation and inverter inner loop control, the order reduction model of doubly-fed wind turbine is obtained through detailed theoretical derivation. Finally, the reduced order model and the full order electromagnetic model are simulated and compared in the case of wind speed disturbance and power network fault. The research progress of wind power models in international academic organizations is followed, and the development and evolution of general wind power models are analyzed. The first edition of WECC, the second edition of WECC and the three kinds of standardized models of wind power generation are compared in detail. Including the main structural differences of the model and the corresponding relationship between the parameters. Three standardized models are compared and analyzed. For photovoltaic model reduction, the inverter, which is a time-consuming component in the photovoltaic electromagnetic model, is simplified to a first-order inertial link by detailed theoretical derivation, and its control characteristics are considered. Based on the injection power method, a photovoltaic reduced-order model is established for system analysis, including photovoltaic cell module, inverter control module, MPPT control module, grid-connected module and protection module. The variable transfer relation between modules of photovoltaic system is also given. The correctness of the reduced order photovoltaic model is verified by connecting the photovoltaic power station to the actual grid.
【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】：2015
【分類號(hào)】：TM61
【二級(jí)參考文獻(xiàn)】
相關(guān)期刊論文 前1條
1 王一波;李晶;許洪華;;考慮電網(wǎng)安全穩(wěn)定約束的光伏電站最大安裝容量計(jì)算與分析[J];太陽(yáng)能學(xué)報(bào);2008年08期
，本文編號(hào)：2313990
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