本文選題：電力系統(tǒng) + 初期黑啟動(dòng)��； 參考：《華北電力大學(xué)》2017年碩士論文

【摘要】：近些年來(lái)發(fā)生的多次大停電事故警示我們,電網(wǎng)的大規(guī)�；ヂ�(lián)雖然能平息電力系統(tǒng)日常的“小風(fēng)小浪”,但電力系統(tǒng)偶遇的“大風(fēng)大浪”很可能引起連鎖故障,進(jìn)而引發(fā)大停電,帶來(lái)巨大的經(jīng)濟(jì)損失和社會(huì)危害。因此,有必要提前制定黑啟動(dòng)(Black Start,BS)方案,以便大停電發(fā)生時(shí)能有條不紊地盡快恢復(fù)系統(tǒng)。電力系統(tǒng)中風(fēng)電滲透率的不斷增大,使風(fēng)電參與黑啟動(dòng)成為必要;而風(fēng)電控制技術(shù)和儲(chǔ)能技術(shù)的不斷提高,使風(fēng)電參與黑啟動(dòng)成為可能。本文的主要工作是為了讓風(fēng)電參與初期黑啟動(dòng),給風(fēng)電場(chǎng)配置了發(fā)揮平抑風(fēng)電出力作用的儲(chǔ)能電站,為了使風(fēng)電滿足初期黑啟動(dòng)的要求,提出了新的儲(chǔ)能配置策略,此后對(duì)水火風(fēng)儲(chǔ)所形成的孤島系統(tǒng)進(jìn)行后續(xù)黑啟動(dòng)校驗(yàn)。首先,研究了雙饋風(fēng)電機(jī)組和儲(chǔ)能電站的數(shù)學(xué)模型,并在PSCAD/EMTDC軟件上搭建了風(fēng)電場(chǎng)等值模型和可以發(fā)揮平抑作用的儲(chǔ)能電站模型,并通過(guò)仿真驗(yàn)證了搭建風(fēng)電場(chǎng)模型的正確性以及儲(chǔ)能電站的合理性。然后提出了新的儲(chǔ)能配置策略。首先求取了初期恢復(fù)系統(tǒng)所需平抑的最大功率波動(dòng),將此作為風(fēng)電輸出功率的限幅目標(biāo);然后將限幅目標(biāo)作為確定儲(chǔ)能電站功率的主要依據(jù),將限幅目標(biāo)和典型火電機(jī)組輔機(jī)的啟動(dòng)時(shí)間作為確定儲(chǔ)能電站容量的主要依據(jù),從而確保在儲(chǔ)能電站發(fā)揮平抑作用的時(shí)間長(zhǎng)度內(nèi),風(fēng)電場(chǎng)的輸出功率波動(dòng)值限定在限幅目標(biāo)內(nèi);通過(guò)仿真驗(yàn)證了配置的儲(chǔ)能電站能夠使風(fēng)電場(chǎng)安全平穩(wěn)地參與初期黑啟動(dòng)。最后,對(duì)水火風(fēng)儲(chǔ)系統(tǒng)進(jìn)行了后續(xù)恢復(fù)過(guò)程的技術(shù)校驗(yàn),主要對(duì)線路過(guò)電壓、廠用負(fù)荷啟動(dòng)時(shí)的系統(tǒng)電壓、頻率問(wèn)題和低頻振蕩問(wèn)題進(jìn)行校驗(yàn),證實(shí)了此系統(tǒng)可以承受風(fēng)儲(chǔ)聯(lián)合系統(tǒng)的波動(dòng)性問(wèn)題,此后的恢復(fù)過(guò)程可以順利進(jìn)行。
[Abstract]:The numerous power outages that have occurred in recent years have warned us that although large-scale interconnection of power grids can quell the daily "small wind and small waves" of the power system, the occasional "big waves" in the power system are likely to cause cascading failures. In turn, caused by power outages, bring huge economic losses and social harm. Therefore, it is necessary to develop the Black start BSs in advance so that the system can be restored as soon as possible in the event of blackout. With the increasing permeability of wind power in power system, it is necessary for wind power to participate in black start, and the continuous improvement of wind power control technology and energy storage technology makes it possible for wind power to participate in black start. The main work of this paper is to allow wind power to take part in the initial black start, and to configure the wind farm with a storage power station that exerts the function of levelling the wind power. In order to make the wind power meet the requirements of the initial black start, a new strategy of energy storage configuration is put forward. After that, the isolated island system formed by the water and fire wind storage is verified by subsequent black start check. Firstly, the mathematical models of doubly-fed wind turbine and energy storage power station are studied, and the equivalent model of wind farm and the model of energy storage power station which can play a stabilizing role are built on the PSCAD/EMTDC software. The correctness of wind farm model and the rationality of energy storage power station are verified by simulation. Then a new strategy of energy storage configuration is proposed. First, the maximum power fluctuation needed for the initial recovery system is obtained, which is regarded as the limiting target of wind power output, and then the limiting target is taken as the main basis for determining the power of the storage power plant. The limiting target and the start-up time of the auxiliary unit of typical thermal power unit are taken as the main basis for determining the capacity of the storage power station, so as to ensure that the fluctuation value of the output power of the wind farm is limited to the limiting target in the time period of the energy storage power station playing a stabilizing role. The simulation results show that the configured energy storage power station can make wind farm participate in the initial black start safely and smoothly. Finally, the technical verification of the subsequent recovery process of the water and fire air storage system is carried out, mainly for the line overvoltage, the system voltage, frequency problem and the low frequency oscillation problem during the start-up of the plant load. It is proved that the system can withstand the volatility of the combined wind and storage system, and the recovery process can be carried out smoothly.
【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】：2017
【分類號(hào)】：TM614

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本文編號(hào)：1930096