本文選題：核電　切入點(diǎn)：風(fēng)電　出處：《沈陽工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著經(jīng)濟(jì)的發(fā)展、風(fēng)力發(fā)電等不可調(diào)度性資源的大規(guī)模接入以及核電機(jī)組并網(wǎng)容量的不斷增加,電網(wǎng)中的負(fù)荷峰谷差也逐年增大,使以火電機(jī)組為調(diào)峰主體的電網(wǎng)調(diào)峰壓力更加嚴(yán)峻。另外,受電源結(jié)構(gòu)限制和供熱需求的影響,電網(wǎng)的低谷調(diào)峰能力有限,棄風(fēng)、棄核問題日益嚴(yán)重,給電網(wǎng)安全和高比例新能源的消納帶來很大困難,急需新的調(diào)峰電源和手段。隨著核電的應(yīng)用,大規(guī)模風(fēng)電的開發(fā),如何有效利用調(diào)峰電源,展開核電機(jī)組參與系統(tǒng)調(diào)峰運(yùn)行的研究應(yīng)用和以抽水蓄能-核電-風(fēng)電為核心的聯(lián)合調(diào)峰控制策略研究將是解決電網(wǎng)調(diào)峰問題的有效途徑之一,以往的研究集中體現(xiàn)在典型日的風(fēng)火、風(fēng)蓄和核蓄的聯(lián)合運(yùn)營,沒有在風(fēng)電接入的以實(shí)際電網(wǎng)規(guī)劃角度進(jìn)行抽水蓄能-核電-風(fēng)電的大電網(wǎng)調(diào)峰平臺(tái)搭建和聯(lián)合調(diào)峰控制策略的提出。針對(duì)以上問題,本文以某省電網(wǎng)風(fēng)電大規(guī)模接入,抽水蓄能的缺少,核電運(yùn)營和不斷規(guī)劃,棄風(fēng)的嚴(yán)重,一次如何展開抽水蓄能-核電-風(fēng)電聯(lián)合調(diào)峰控制為成為了消納某省風(fēng)電的重大問題,首先根據(jù)不同調(diào)峰電源的調(diào)峰運(yùn)行特性,闡述其調(diào)峰成本的計(jì)算,并分析了風(fēng)力發(fā)電能源的反調(diào)峰性;其次根據(jù)某省電網(wǎng)實(shí)際網(wǎng)架結(jié)構(gòu)和參數(shù),在PSCAD平臺(tái)下搭建省級(jí)大電網(wǎng)模型,從而構(gòu)建了聯(lián)合調(diào)峰運(yùn)行仿真平臺(tái),為了使結(jié)果更加有效性,網(wǎng)內(nèi)對(duì)火電機(jī)組、風(fēng)力發(fā)電機(jī)組、核電機(jī)組、抽水蓄能機(jī)組、高壓直流輸電、柔性直流輸電系統(tǒng)、線路、變壓器、無功補(bǔ)償、外網(wǎng)等值模型的數(shù)學(xué)模型和控制模型進(jìn)行了詳細(xì)闡述;然后基于核電機(jī)組可以一定程度參與電網(wǎng)調(diào)峰的前提,在節(jié)能調(diào)度要求下,尋求各機(jī)組在1天內(nèi)各個(gè)時(shí)間段的調(diào)峰手段組合,以保證全天96點(diǎn)總的運(yùn)行費(fèi)用最小,研究現(xiàn)有裝機(jī)水平下典型日內(nèi)核電參與調(diào)峰以增加風(fēng)電消納量;最后兼顧公司與社會(huì)效益,以等年值綜合成本最低為優(yōu)化目標(biāo),建立抽蓄-核電-風(fēng)電的聯(lián)合規(guī)劃模型,以得到三種電源的最優(yōu)規(guī)劃裝機(jī)容量,以2020年規(guī)劃水平下進(jìn)行算例驗(yàn)證,并研究了抽蓄裝機(jī)、風(fēng)電裝機(jī)、核電裝機(jī)、棄風(fēng)率之間的關(guān)系。
[Abstract]:With the development of economy, the large-scale access of non-dispatch resources such as wind power generation and the increasing of power units' grid-connected capacity, the load peak-valley difference in the power network increases year by year. The peak-shaving pressure of power grid with thermal power unit as the main part of peak-shaving is more severe. In addition, due to the limitation of power supply structure and the demand for heating, the power grid has limited ability to adjust the peak at the bottom of the grid, and the problem of abandoning wind and nuclear energy is becoming more and more serious. With the application of nuclear power, the development of large-scale wind power, how to effectively utilize peak-shaving power supply, It will be one of the effective ways to solve the peak-shaving problem of power grid by developing the research and application of the nuclear power unit participating in the peak-shaving operation of the system and the research of the combined peak-shaving control strategy with pumped storage, nuclear power and wind power as the core. Previous studies have focused on the combined operation of wind and fire, wind storage and nuclear storage in typical days. In view of the above problems, this paper presents a large power grid peak-shaving platform and a combined peak-shaving control strategy based on the actual power network planning, which is not connected with wind power. The lack of pumped storage, the operation and continuous planning of nuclear power, and the serious abandonment of wind, how to develop the joint peak shaving control of pumped storage, nuclear power and wind power at a time has become a major problem in absorbing wind power in a certain province. First, according to the peak-shaving operation characteristics of different peak-shaving power supply, the calculation of peak-shaving cost is expounded, and the anti-peak-shaving property of wind power generation energy is analyzed. In order to make the results more effective, the model of provincial power grid is built under PSCAD platform, and the simulation platform of combined peak-shaving operation is constructed. In order to make the results more effective, the network is designed for thermal power units, wind turbines, nuclear power units, pumped storage units, high-voltage direct current transmission units. The mathematical model and control model of flexible direct current transmission system, line, transformer, reactive power compensation, external network equivalent model are elaborated in detail. Then, based on the premise that nuclear power unit can participate in power grid peak shaving to some extent, Under the requirement of energy-saving dispatching, this paper seeks the combination of peak-shaving means of each unit in each period of one day to ensure that the total operating cost of 96 points per day is the minimum. The typical intra-day nuclear power plants are involved in peak-shaving at the existing installed level to increase the wind power consumption. Finally, considering the company and social benefits, taking the lowest comprehensive cost of equal annual value as the optimization goal, the joint planning model of pumped storage, nuclear power and wind power is established to obtain the optimal planned installed capacity of the three kinds of power supply. Based on the example of 2020 planning level, the relationship between pumped storage machine, wind power plant, nuclear power plant and air rejection rate is studied.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM61;TM73

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