本文關(guān)鍵詞：華中電網(wǎng)大規(guī)模水電站群短期調(diào)峰問題研究與應(yīng)用　出處：《華中科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 多電網(wǎng) 短期調(diào)峰 水電站群 華中電網(wǎng) 啟發(fā)式方法 不對(duì)稱自適應(yīng)廊道

【摘要】：隨著經(jīng)濟(jì)快速發(fā)展、產(chǎn)業(yè)結(jié)構(gòu)不斷調(diào)整以及新能源的持續(xù)并網(wǎng)投運(yùn),我國(guó)主要區(qū)域電網(wǎng)以及大多數(shù)省級(jí)電網(wǎng)的峰谷差急劇拉大。對(duì)電網(wǎng)而言,減小峰谷差是保障其安全穩(wěn)定運(yùn)行的關(guān)鍵;而水電機(jī)組以調(diào)節(jié)能力強(qiáng)、調(diào)峰成本低、開停機(jī)迅速等眾多優(yōu)點(diǎn)被公認(rèn)為是優(yōu)質(zhì)的調(diào)峰電源,尤其是水電能源作為一種可再生潔凈能源,已經(jīng)成為各國(guó)大力發(fā)展的戰(zhàn)略資源而受到高度重視。因此,如何提高水電調(diào)峰能力、保障電網(wǎng)安全穩(wěn)定運(yùn)行是目前亟需解決的問題。深入開展大規(guī)模水電站群多電網(wǎng)環(huán)境下的短期調(diào)峰優(yōu)化調(diào)度研究,不僅對(duì)充分利用水能資源具有重要的意義,而且對(duì)提高區(qū)域電網(wǎng)運(yùn)行管理水平也具有十分重要的理論意義和工程實(shí)用價(jià)值。本文以華中電網(wǎng)直調(diào)水電站為研究對(duì)象,針對(duì)直調(diào)水電站同時(shí)向多個(gè)省網(wǎng)送電、且電站送電范圍和送電比例各不相同的復(fù)雜調(diào)度問題,綜合考慮各級(jí)電站發(fā)電能力和電網(wǎng)安全穩(wěn)定運(yùn)行約束,開展華中電網(wǎng)大規(guī)模水電站群短期調(diào)峰問題的研究與應(yīng)用,建立了相應(yīng)的調(diào)峰模型,提出了多種切實(shí)可行的模型求解算法,為提高華中電網(wǎng)安全穩(wěn)定運(yùn)行能力提供了理論依據(jù)和技術(shù)支持。本文的主要工作和研究成果包括:(1)對(duì)華中電網(wǎng)擁有大規(guī)模水電站群、且分屬不同的省網(wǎng)及流域的工程背景進(jìn)行了詳細(xì)分析,采用“分層分級(jí)控制,整體優(yōu)化計(jì)算”的思路將調(diào)峰優(yōu)化問題劃分為若干個(gè)“單站多電網(wǎng)”和“多站單電網(wǎng)”子問題進(jìn)行建模和求解,按照不同河系梯級(jí)“分層”、同一河系電站“分級(jí)”的原則以行政區(qū)域、河系、送電范圍對(duì)各個(gè)電站進(jìn)行劃分。該原則能夠在不影響優(yōu)化結(jié)果精度的前提下降低整體優(yōu)化過程中決策變量和約束的維度,實(shí)現(xiàn)高維問題低維化重構(gòu),且能滿足實(shí)際工程應(yīng)用需求。(2)單站多電網(wǎng)調(diào)峰調(diào)度問題需要兼顧各受電電網(wǎng)調(diào)峰要求,以動(dòng)態(tài)響應(yīng)各電網(wǎng)頻繁的負(fù)荷變化,本文在綜合考慮受電電網(wǎng)負(fù)荷量級(jí)、負(fù)荷特性以及調(diào)峰需求的差異性的基礎(chǔ)上,以受電電網(wǎng)剩余負(fù)荷方差加權(quán)和最小為目標(biāo)建立多電網(wǎng)調(diào)峰模型,并提出了一種單站多電網(wǎng)短期啟發(fā)式調(diào)峰方法求解該模型,以二灘水電站為調(diào)度對(duì)象進(jìn)行仿真計(jì)算,結(jié)果表明該方法在兼顧多電網(wǎng)負(fù)荷特性的同時(shí),能夠充分發(fā)揮水電站的調(diào)峰容量效益,可以為單站多電網(wǎng)調(diào)峰調(diào)度提供理論指導(dǎo)和技術(shù)支持。(3)由于多站單電網(wǎng)調(diào)峰問題涉及的電站多,既有水量傳遞上的動(dòng)態(tài)聯(lián)系,又有多種綜合利用要求,從而導(dǎo)致短期優(yōu)化調(diào)度建模及其模型求解的維數(shù)災(zāi)問題。研究工作從流域大規(guī)模電站群整體優(yōu)化的角度出發(fā),以受電電網(wǎng)剩余負(fù)荷方差最小為目標(biāo)建立了“多站單電網(wǎng)”短期調(diào)峰模型,為突破已有理論和方法在求解時(shí)存在計(jì)算精度低、時(shí)間復(fù)雜度較高等技術(shù)瓶頸,提出了一種基于不對(duì)稱自適應(yīng)廊道技術(shù)的離散微分動(dòng)態(tài)規(guī)劃算法對(duì)該模型進(jìn)行求解,不僅有效縮小了算法的尋優(yōu)廊道,避免重復(fù)尋優(yōu),而且兼顧了求解效率和計(jì)算精度。以清江梯級(jí)水電站為調(diào)度實(shí)例進(jìn)行仿真計(jì)算,結(jié)果表明,該方法能夠充分發(fā)揮電站調(diào)峰容量效益,有效避免了不必要的棄水,具有一定的工程應(yīng)用價(jià)值。(4)基于以上研究成果,本文采用基于Java FX的富互聯(lián)網(wǎng)應(yīng)用架構(gòu)設(shè)計(jì)并開發(fā)了“華中電網(wǎng)水火電聯(lián)合調(diào)度系統(tǒng)”,該系統(tǒng)能夠充分調(diào)用客戶機(jī)的計(jì)算能力,有效減輕網(wǎng)絡(luò)傳輸和服務(wù)器計(jì)算壓力,同時(shí)提供比Web應(yīng)用程序更為豐富的人機(jī)交互元素和更加流暢的用戶體驗(yàn),為華中電網(wǎng)調(diào)度通信中心進(jìn)行直調(diào)水電站短期發(fā)電計(jì)劃編制提供了理論依據(jù)和技術(shù)平臺(tái)。
[Abstract]:With the rapid development of economy, the adjustment of industrial structure and sustainable new energy grid is put into operation, the main regional power grids in China and most of the provincial power grid peak valley difference widened sharply. In terms of the power grid, reduce the peak valley difference is the key to ensure the safe and stable operation of the motor; and the water group to adjust ability, peaking cost low, shut off rapidly and many other advantages are recognized as peaking power quality, especially hydropower as a renewable clean energy, has become a strategic resource for national development and attention. Therefore, how to improve the hydropower peaking capacity, guaranteeing the safe and stable operation of power grid is an urgent problem to carry out large-scale hydropower. Short-term scheduling optimization of multi peak cluster grid environment, not only has important significance to make full use of water resources, but also to improve the regional power grid operation tube The level of management has important theoretical significance and practical value. In this paper, Huazhong hydropower station as the research object, for the direct hydropower station to a plurality of network transmission, and power plant complex scheduling problems of transmission range and transmission ratio of each are not identical, considering all power plants and the security and stability of power grid constraints, to carry out large-scale hydropower stations in Central China power grid research and application of short-term peak shaving, a peak corresponding model, put forward the feasible methods to solve the model, provides a theoretical basis and technical support for the improvement of central China power grid safe and stable operation ability. The main research work and achievements include: (1) in Central China Power Grid with large-scale hydropower stations, provincial network and river basin and belong to different engineering background is analyzed in detail, using hierarchical control, whole optimization "The idea will peak optimization problem is divided into a number of single station and multi grid" and "multi station single grid modeling and solving sub problems, according to the different river cascade" layer ", the same river power station" grading "principle in the administrative area of the galaxy, the power transmission scope division of each power plant the principle to reduce the overall optimization decision variables and constraints in the process of dimension without affecting the accuracy of the optimization results, achieve the high dimension problem of low dimensional reconstruction, and can satisfy the needs of practical application. (2) single station and multi peak scheduling problems need to take into account the different power grid peak demand in dynamic in response to the grid load changes frequently, the magnitude of load in Power Grid Considering the load characteristics and peak demand differences on the basis of the electric power grid to establish the residual load variance weighted minimum as the objective Network load model, and puts forward the short-term peaking heuristic method for solving a kind of single station and multi grid in the model, two hydroelectric power stations for scheduling objects are simulated, the results show that the method in taking into account the characteristics of power grid at the same time, can make full use of hydropower peaking capacity benefit for single station multi peak power dispatching provide guidance and technical support. (3) due to multi station involving single power peaking problems in power plant, a dynamic contact water transfer, and a variety of comprehensive utilization requirements, which lead to the dimension disaster problem optimization modeling and short-term model solution. The research work starting from the river basin scale hydropower stations optimized angle and to be electrified to establish a "multi station single grid model of the minimum residual power of short-term peaking load variance as the goal, to break through the existing calculation theory and method in solving the low precision, The time complexity of higher technical bottlenecks, proposed a discrete differential dynamic programming algorithm based on adaptive asymmetric corridor technology to solve the model, not only effectively reduce the searching corridor, to avoid duplication of optimization, and the solving efficiency and calculation accuracy. Taking Qingjiang cascade hydropower station as a scheduling example the simulation results show that the calculation method could give full play to the peak load capacity benefit, avoid unnecessary waste water, it has certain engineering application value. (4) based on the above research results, this paper adopts rich Internet application architecture of Java FX design and development of the "Central China Power Grid Hydrothermal Scheduling System Based on the system can calculate the full capacity, call the client, effectively reduce the network transmission and server computing pressure, at the same time provide more rich people than the Yuan machine interactive Web applications And a more fluent user experience provides a theoretical basis and a technical platform for the establishment of a short-term power generation plan for direct hydropower station in Central China Power Grid Dispatching and communication center.

【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TV737

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本文編號(hào)：1367146