發(fā)布時(shí)間：2019-06-25 18:13

【摘要】：依靠?jī)?nèi)蒙古自治區(qū)豐富的風(fēng)能資源和國家能源政策的引導(dǎo)，大規(guī)模的風(fēng)電接入到內(nèi)蒙古西部電網(wǎng)（簡(jiǎn)稱，蒙西電網(wǎng)）中運(yùn)行，不僅有效地緩解了電力供應(yīng)的緊張，也極大地促進(jìn)了新能源技術(shù)的發(fā)展。但風(fēng)電的隨機(jī)性與波動(dòng)性，導(dǎo)致電網(wǎng)在火電可調(diào)范圍有限和以高載能負(fù)荷為主的地區(qū)負(fù)荷電量需求大的情況下，很難安排運(yùn)行方式，甚至在負(fù)荷低谷期間棄風(fēng)、在負(fù)荷高峰期降低外送電力。因此如何建立合理的、簡(jiǎn)單易行的風(fēng)電、火電和高載能負(fù)荷電量交易方案，，從而兼顧風(fēng)電、火電、高載能負(fù)荷和電網(wǎng)各方利益，是需要研究的問題。本文綜合考慮了風(fēng)電的運(yùn)行成本、火電機(jī)組的啟停費(fèi)用和高載能負(fù)荷的電價(jià)補(bǔ)貼等影響電量交易的關(guān)鍵因素，進(jìn)行了基于大規(guī)模風(fēng)電接入的蒙西電網(wǎng)風(fēng)電、火電和高載能負(fù)荷電量交易的探索研究，主要內(nèi)容和結(jié)果如下： （1）分析了蒙西電網(wǎng)的地區(qū)負(fù)荷、風(fēng)電運(yùn)行的特點(diǎn)。介紹了蒙西電網(wǎng)的生產(chǎn)運(yùn)行現(xiàn)狀，如發(fā)供電負(fù)荷、峰谷差、斷面限制和外送電力等情況，分析了蒙西電網(wǎng)電力供需平衡所存在的問題。介紹了蒙西電網(wǎng)的風(fēng)能能源的基本情況，基于概率統(tǒng)計(jì)方法給出了蒙西電網(wǎng)風(fēng)電的運(yùn)行規(guī)律。分析了大規(guī)模風(fēng)電接入對(duì)系統(tǒng)電壓、系統(tǒng)穩(wěn)定的影響和所存在的問題。 （2）研究了風(fēng)電、火電和高載能負(fù)荷之間電量交易的可行性問題。通過分析風(fēng)電的前期投資和生產(chǎn)維護(hù)成本、火電的正常運(yùn)行成本和啟停費(fèi)用、高載能負(fù)荷的發(fā)展困境，初步探索了風(fēng)電、火電和高載能負(fù)荷之間電量交易的前提條件。介紹了蒙西電網(wǎng)的風(fēng)電數(shù)值預(yù)測(cè)系統(tǒng)，并利用實(shí)際采樣的數(shù)據(jù)分析了系統(tǒng)的預(yù)測(cè)精度�；诿晌麟娋W(wǎng)的高精度風(fēng)電預(yù)測(cè)能力，給出了風(fēng)電、火電和高載能負(fù)荷之間進(jìn)行電量交易可以兼顧各方利益并帶來巨大經(jīng)濟(jì)、社會(huì)效益的結(jié)論。 （3）研究了風(fēng)電、火電和高載能負(fù)荷之間電量交易的設(shè)計(jì)問題。提出了一種風(fēng)電與火電之間的電量交易方案，即火電機(jī)組通過啟停提供調(diào)峰服務(wù)并獲得風(fēng)電的經(jīng)濟(jì)補(bǔ)償，以避免蒙西電網(wǎng)在負(fù)荷高峰期降低外送電量。提出了一種風(fēng)電與高載能負(fù)荷之間的電量交易方案，即高載能負(fù)荷作為備用負(fù)荷消納負(fù)荷低谷期的風(fēng)電并獲得風(fēng)電的經(jīng)濟(jì)補(bǔ)償，以避免蒙西電網(wǎng)在負(fù)荷低谷期棄風(fēng)。提出了一種風(fēng)電、火電和高載能負(fù)荷之間的電量交易方案，即高載能負(fù)荷、火電和風(fēng)電在風(fēng)電預(yù)測(cè)通告后進(jìn)行相互報(bào)價(jià)和電量交易。通過算例分析說明了所提電量交易的有效性。
[Abstract]:Relying on the rich wind energy resources and the guidance of national energy policy in Inner Mongolia Autonomous region, large-scale wind power is connected to the western Inner Mongolia power grid (abbreviated as Mengxi Power Grid), which not only effectively alleviates the shortage of power supply, but also greatly promotes the development of new energy technology. However, the randomness and fluctuation of wind power make it difficult to arrange the operation mode under the condition that the adjustable range of thermal power is limited and the demand of load electricity is large in the area with high load, and even abandon the wind during the load trough and reduce the outgoing power during the peak period of load. Therefore, how to establish a reasonable and simple trading scheme of wind power, thermal power and high load electricity, so as to take into account the interests of wind power, thermal power, high load and the interests of all parties in the power grid, is a problem that needs to be studied. In this paper, the operation cost of wind power, the start and stop cost of thermal power units and the electricity price subsidy of high load are considered synthetically, and the exploration and research of wind power, thermal power and high load electricity transaction of Mengxi power grid based on large-scale wind power access are carried out. the main contents and results are as follows: (1) the regional load of Mengxi power grid and the characteristics of wind power operation are analyzed. This paper introduces the present situation of production and operation of Mengxi power grid, such as generating and supplying load, peak and valley difference, section restriction and outgoing power, etc., and analyzes the problems existing in the balance of power supply and demand in Mengxi power grid. This paper introduces the basic situation of wind energy in Mengxi power grid, and gives the operation law of wind power in Mengxi power grid based on probability and statistics method. The influence of large-scale wind power access on system voltage and system stability and the existing problems are analyzed. (2) the feasibility of electricity trading between wind power, thermal power and high load is studied. Based on the analysis of the upfront investment and production and maintenance cost of wind power, the normal operation cost and start-up cost of thermal power, and the development predicament of high load, the prerequisites of electricity transaction between wind power, thermal power and high load are preliminarily explored. The wind power numerical prediction system of Mengxi power grid is introduced, and the prediction accuracy of the system is analyzed by using the actual sampled data. Based on the high precision wind power forecasting ability of Mengxi power grid, it is concluded that the transaction between wind power, thermal power and high energy load can take into account the interests of all parties and bring great economic and social benefits. (3) the design of power transaction between wind power, thermal power and high load is studied. In this paper, a power trading scheme between wind power and thermal power is proposed, that is, thermal power units provide peak shaving service through start and stop and obtain economic compensation for wind power, in order to avoid the reduction of external power transmission in Mengxi power grid during the peak load period. In this paper, a power trading scheme between wind power and high energy load is proposed, that is, the high load is used as the standby load to absorb the wind power in the trough period and obtain the economic compensation of wind power, so as to avoid the abandonment of wind in the low load period of Mengxi power grid. In this paper, a power trading scheme between wind power, thermal power and high load is proposed, that is, high load, thermal power and wind power quote and trade each other after wind power forecast announcement. The effectiveness of the proposed electricity transaction is illustrated by an example.
【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】：2013
【分類號(hào)】：F426.61;TM61

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