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基于輸電線路實(shí)時(shí)評(píng)估模型的電力系統(tǒng)靜態(tài)安全在線風(fēng)險(xiǎn)評(píng)估

發(fā)布時(shí)間:2018-10-29 08:30
【摘要】:隨著傳統(tǒng)的電力系統(tǒng)靜態(tài)安全分析方法的局限性和不足之處的日益暴露,人們逐漸地將研究重點(diǎn)轉(zhuǎn)向不確定性分析方法。目前,不確定性分析方法中的隨機(jī)潮流方法已經(jīng)得到了比較深入的研究,但是從電力系統(tǒng)安全運(yùn)行的角度將其應(yīng)用于靜態(tài)安全風(fēng)險(xiǎn)評(píng)估的研究卻很少。針對(duì)電力系統(tǒng)傳統(tǒng)的靜態(tài)安全分析方法存在的缺陷,本文從風(fēng)險(xiǎn)的角度,對(duì)電網(wǎng)運(yùn)行的安全性進(jìn)行風(fēng)險(xiǎn)評(píng)估。 本文對(duì)計(jì)及氣象因素的輸電線路故障概率的實(shí)時(shí)模型進(jìn)行深入探討,將輸電線路分為絕緣子、導(dǎo)線、避雷器、桿塔、地線5個(gè)部分來(lái)進(jìn)行在線監(jiān)測(cè),并依據(jù)其規(guī)格和實(shí)際運(yùn)行情況分別建立了各個(gè)監(jiān)測(cè)量的量化模型,然后采用未確知有理數(shù)的權(quán)系數(shù)法和模糊評(píng)估法,建立了基于在線監(jiān)測(cè)數(shù)據(jù)的輸電線路實(shí)時(shí)故障概率的層次評(píng)估模型,同時(shí)考慮當(dāng)前的氣象條件,建立了計(jì)及氣象因素的輸電線路故障概率的實(shí)時(shí)評(píng)估模型。 本文深入探討了可用于靜態(tài)安全風(fēng)險(xiǎn)評(píng)估的隨機(jī)潮流法?紤]了電力系統(tǒng)中存在的各種不確定性因素,并對(duì)負(fù)荷的波動(dòng)性和發(fā)電機(jī)出力的隨機(jī)性建立了相應(yīng)的概率模型,并提出了以半不變量為基礎(chǔ)的Cornish-Fisher級(jí)數(shù)展開(kāi)法進(jìn)行隨機(jī)潮流計(jì)算,,對(duì)系統(tǒng)中由這些不確定因素造成的線路功率和節(jié)點(diǎn)電壓的不確定性進(jìn)行分析。 本文從框架的觀點(diǎn)提出了電力系統(tǒng)靜態(tài)安全在線風(fēng)險(xiǎn)評(píng)估方法,并建立了適用于靜態(tài)安全在線風(fēng)險(xiǎn)評(píng)估的風(fēng)險(xiǎn)指標(biāo)。為了達(dá)到在線風(fēng)險(xiǎn)評(píng)估的實(shí)時(shí)性要求,本文根據(jù)提出的篩選指標(biāo)對(duì)電力系統(tǒng)的預(yù)想故障集進(jìn)行了實(shí)時(shí)故障篩選與排序;在此基礎(chǔ)上,利用本文所提方法計(jì)算系統(tǒng)的綜合風(fēng)險(xiǎn)指標(biāo),真實(shí)全面地反映系統(tǒng)在當(dāng)前運(yùn)行狀態(tài)下所處的風(fēng)險(xiǎn)水平。
[Abstract]:With the limitation and deficiency of the traditional static security analysis method of power system, people gradually turn the research focus to the uncertainty analysis method. At present, the stochastic power flow method in the uncertainty analysis method has been deeply studied, but it is rarely applied to static security risk assessment from the point of view of safe operation of power system. Aiming at the shortcomings of the traditional static security analysis method of power system, this paper evaluates the security of power network operation from the risk point of view. In this paper, the real time model of transmission line failure probability considering meteorological factors is discussed in depth. The transmission line is divided into five parts: insulator, conductor, arrester, pole tower and ground wire. According to its specifications and actual operation, the quantitative models of each monitoring quantity are established, and then the weight coefficient method of unascertained rational number and the fuzzy evaluation method are adopted. Based on on-line monitoring data, a real-time fault probability evaluation model for transmission lines is established. Considering the current meteorological conditions, a real-time evaluation model of transmission line fault probability is established taking into account meteorological factors. This paper discusses the stochastic power flow method which can be used for static security risk assessment. Considering all kinds of uncertain factors in power system, the probability model of load fluctuation and generator output randomness is established. A Cornish-Fisher series expansion method based on semi-invariants is proposed to calculate the random power flow. The uncertainties of line power and node voltage caused by these uncertainties are analyzed. In this paper, an on-line risk assessment method for static security of power system is proposed from the viewpoint of frame, and a risk index suitable for online risk assessment of static security is established. In order to meet the real-time requirements of online risk assessment, this paper carries out real-time fault screening and sorting for the expected fault set of power system according to the proposed screening index. On this basis, the method proposed in this paper is used to calculate the comprehensive risk index of the system, which reflects the risk level of the system under the current running state.
【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】:2013
【分類號(hào)】:TM711

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 董雷;楊以涵;張傳成;蒲天驕;鮑海;;綜合考慮網(wǎng)絡(luò)結(jié)構(gòu)不確定性的概率潮流計(jì)算方法[J];電工技術(shù)學(xué)報(bào);2012年01期

2 趙芳,陳士方,張圣集;保留非線性的電力系統(tǒng)概率潮流計(jì)算[J];電力情報(bào);2000年03期

3 余貽鑫,董存;美加“8.14大停電”過(guò)程中的電壓崩潰[J];電力設(shè)備;2004年03期

4 黃進(jìn)安,吳惟靜;保留潮流方程非線性的電力系統(tǒng)概率潮流計(jì)算[J];電力系統(tǒng)自動(dòng)化;1986年06期

5 賴業(yè)寧,薛禹勝,王海風(fēng);電力市場(chǎng)穩(wěn)定性及其風(fēng)險(xiǎn)管理[J];電力系統(tǒng)自動(dòng)化;2003年12期

6 陳永進(jìn),任震,黃雯瑩;考慮天氣變化的可靠性評(píng)估模型與分析[J];電力系統(tǒng)自動(dòng)化;2004年21期

7 馮永青;吳文傳;張伯明;孫宏斌;何云良;;基于可信性理論的電力系統(tǒng)運(yùn)行風(fēng)險(xiǎn)評(píng)估 (二)理論基礎(chǔ)[J];電力系統(tǒng)自動(dòng)化;2006年02期

8 馮永青;吳文傳;張伯明;孫宏斌;何云良;葉永青;王志南;;基于可信性理論的電力系統(tǒng)運(yùn)行風(fēng)險(xiǎn)評(píng)估——(三)應(yīng)用與工程實(shí)踐[J];電力系統(tǒng)自動(dòng)化;2006年03期

9 廖瑞金;王謙;駱?biāo)技?廖玉祥;孫才新;;基于模糊綜合評(píng)判的電力變壓器運(yùn)行狀態(tài)評(píng)估模型[J];電力系統(tǒng)自動(dòng)化;2008年03期

10 孫榮富;程林;孫元章;;基于惡劣氣候條件的停運(yùn)率建模及電網(wǎng)充裕度評(píng)估[J];電力系統(tǒng)自動(dòng)化;2009年13期

相關(guān)博士學(xué)位論文 前1條

1 李t熝

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