發(fā)布時(shí)間：2018-01-27 00:06

  本文關(guān)鍵詞： 無功電壓 無功功率協(xié)調(diào)控制 風(fēng)電場(chǎng) 大規(guī)模風(fēng)電基地 控制系統(tǒng)　出處：《華北電力大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：“十二五”規(guī)劃中,明確要求我國(guó)對(duì)能源產(chǎn)業(yè)進(jìn)行深度變革,發(fā)展安全、經(jīng)濟(jì)、清潔的新型能源,風(fēng)電作為新能源中發(fā)展最成熟產(chǎn)業(yè),在我國(guó)得到了飛速發(fā)展。我國(guó)風(fēng)電資源比較集中,而且處于電網(wǎng)末端,需要進(jìn)行遠(yuǎn)距離輸送到負(fù)荷中心。由于風(fēng)力發(fā)電機(jī)為異步發(fā)電機(jī),在發(fā)出有功的同時(shí)需要吸收無功,多個(gè)風(fēng)電場(chǎng)形成大規(guī)模風(fēng)電基地接入電網(wǎng),無功電壓的問題將成為首要的問題。 本文從風(fēng)力發(fā)電的基本單元—風(fēng)力發(fā)電機(jī)出發(fā),首先建立了主流機(jī)型雙饋感應(yīng)風(fēng)力發(fā)電機(jī)的數(shù)學(xué)模型,并在此基礎(chǔ)上分析了其無功能力,為大規(guī)模風(fēng)電基地的無功功率優(yōu)化奠定了基礎(chǔ)。 針對(duì)由雙饋風(fēng)力發(fā)電機(jī)構(gòu)成的、含有SVC的風(fēng)電場(chǎng),提出一種無功功率優(yōu)化策略,該策略主要是雙饋風(fēng)力發(fā)電機(jī)配合SVC進(jìn)行控制,使風(fēng)電場(chǎng)并網(wǎng)點(diǎn)電壓可以自動(dòng)跟蹤目標(biāo)電壓,并由此為基礎(chǔ)對(duì)風(fēng)電場(chǎng)內(nèi)部的無功功率進(jìn)行優(yōu)化,充分利用和協(xié)調(diào)風(fēng)電場(chǎng)的無功設(shè)備,保證風(fēng)電場(chǎng)內(nèi)部節(jié)點(diǎn)電壓穩(wěn)定。并將該策略應(yīng)用到北京四方公司CSC-800W風(fēng)電場(chǎng)功率控制系統(tǒng)中,用實(shí)例進(jìn)行了仿真驗(yàn)證。 對(duì)于由多個(gè)風(fēng)電場(chǎng)匯集形成的大規(guī)模風(fēng)電基地,提出一種區(qū)域性的協(xié)調(diào)控制策略,該策略以控制風(fēng)電場(chǎng)匯集變電站的母線電壓跟蹤調(diào)度指令為基礎(chǔ),綜合協(xié)調(diào)各個(gè)風(fēng)電場(chǎng)的無功功率,使各個(gè)風(fēng)電場(chǎng)可以相互支援,從而穩(wěn)定區(qū)域內(nèi)各個(gè)風(fēng)電場(chǎng)電壓,優(yōu)化大規(guī)模風(fēng)電基地的無功功率。并基于該策略開發(fā)風(fēng)電集群無功電壓協(xié)調(diào)控制系統(tǒng),結(jié)合吉林通榆地區(qū)的大規(guī)模風(fēng)電基地,說明了該系統(tǒng)可以輔助調(diào)度主站完成對(duì)大規(guī)模風(fēng)電基地的無功電壓控制。
[Abstract]:In the 12th Five-Year Plan, China is required to carry on the deep transformation to the energy industry, to develop the new energy of safety, economy and cleanliness, and wind power as the most mature industry in the new energy. Wind power resources are concentrated in our country, and they are at the end of the power grid, so it is necessary to carry out long-distance transmission to the load center. The wind turbine is an asynchronous generator. It is necessary to absorb reactive power while generating active power. The problem of reactive power and voltage will become the primary problem when wind farms form large scale wind power bases to connect to the power grid. In this paper, starting from the basic unit of wind power generation, the mathematical model of the mainstream doubly-fed induction wind generator is established, and its reactive power capacity is analyzed. It lays a foundation for the reactive power optimization of large scale wind power base. A reactive power optimization strategy is proposed for wind farm with SVC, which is composed of doubly-fed wind turbine. The strategy is mainly controlled by doubly-fed wind turbine with SVC. So that wind farm node voltage can automatically track the target voltage, and based on this, the reactive power inside the wind farm can be optimized, and the reactive power equipment of the wind farm can be fully utilized and coordinated. This strategy is applied to the power control system of CSC-800W wind farm of Beijing Sifang Company. A regional coordinated control strategy is proposed for large-scale wind power bases formed by multiple wind farms. The strategy is based on controlling the busbar voltage tracking and dispatching instructions of wind farm converging substations. The reactive power of each wind farm can be coordinated synthetically so that each wind farm can support each other so as to stabilize the voltage of each wind farm in the region. The reactive power of large-scale wind power base is optimized. Based on this strategy, the coordinated control system of reactive power and voltage of wind power cluster is developed, combined with the large-scale wind power base in Tongyu area of Jilin Province. It is shown that the system can assist the main station to complete the reactive power and voltage control of the large scale wind power base.
【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】：2014
【分類號(hào)】：TM614

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