本文選題：變電站 + 故障診斷�。� 參考：《華北電力大學(xué)》2015年碩士論文

【摘要】：變電站(substation)是電力系統(tǒng)中對(duì)電能的電壓和電流進(jìn)行變換、集中和分配的場(chǎng)所,在輸配電系統(tǒng)中具有極其重要的地位。因此當(dāng)變電站發(fā)生故障時(shí),需要相關(guān)運(yùn)維人員能夠快速準(zhǔn)確地定位故障區(qū)域,識(shí)別真正的故障元件并將其隔離,從而快速恢復(fù)非故障區(qū)域的正常運(yùn)行。然而,由于系統(tǒng)發(fā)生復(fù)雜的多重故障、斷路器或保護(hù)存在較多誤動(dòng)或拒動(dòng)、信道干擾造成的信息丟失等因素的影響,報(bào)警信息在后臺(tái)監(jiān)控中的顯示存在很多問(wèn)題,不利于故障的判斷。因此,研究出一種受錯(cuò)誤信息干擾小、容錯(cuò)力強(qiáng)、準(zhǔn)確快速的變電站故障診斷方法具有重要的意義。本文在對(duì)以往的變電站以設(shè)備故障的診斷方法和技術(shù)進(jìn)行詳細(xì)的歸納總結(jié),并且在總結(jié)基礎(chǔ)上,通過(guò)對(duì)Petri網(wǎng)(以提出者Carl Adam Petri命名的理論)、粗糙集理論、人工神經(jīng)網(wǎng)絡(luò)等理論的研究,結(jié)合目前我國(guó)的變電站的故障診斷技術(shù)發(fā)展趨勢(shì)提出了粗糙集和Petri網(wǎng)相互彌補(bǔ)的新型變電站故障診斷技術(shù)。其次,由于大部分變電站都存在設(shè)備分期建設(shè)投產(chǎn)的情況,并且一次擴(kuò)建投產(chǎn)通常只涉及到一個(gè)電壓等級(jí),因此可以根據(jù)電壓等級(jí)將變電站劃分為數(shù)個(gè)相對(duì)獨(dú)立的區(qū)域。在變電站的接線結(jié)構(gòu)或保護(hù)配置改變時(shí),針對(duì)發(fā)生變化的區(qū)域重新構(gòu)建診斷模型,其他區(qū)域不受影響。然后對(duì)于各個(gè)區(qū)域分別建立故障決策表,進(jìn)行粗糙集決策表的屬性和屬性值約簡(jiǎn),從而獲得最小的診斷規(guī)則。因?yàn)镻etri網(wǎng)具有推理搜索快速化、診斷過(guò)程數(shù)學(xué)化、結(jié)構(gòu)表示圖形化的特點(diǎn),本文采用Petri網(wǎng)對(duì)診斷規(guī)則進(jìn)行描述,從而建立各個(gè)區(qū)域的診斷模型,實(shí)現(xiàn)了變電站故障的高效診斷。最后,將以110kV仁舍變電站作為研究的案例,采用Petri網(wǎng)和粗糙集結(jié)合的分區(qū)域故障診斷方法,建立各個(gè)區(qū)域的故障診斷模型。然后,進(jìn)行了模型的樣本測(cè)試和算法的分析比較。結(jié)果表明：這種方法在處理問(wèn)題的速度方面和對(duì)于變電設(shè)備的故障診斷效率方面都有著極大的優(yōu)勢(shì),能夠提高處理效率,保障變電站運(yùn)行的安全運(yùn)行。
[Abstract]:Substation is the place where the voltage and current of electric energy are transformed, centralized and distributed in power system, which plays an extremely important role in the transmission and distribution system. Therefore, when the substation fails, it is necessary for the relevant operators to locate the fault area quickly and accurately, identify and isolate the real fault elements, so as to quickly restore the normal operation of the non-fault area. However, there are many problems in the display of alarm information in background monitoring because of the complex multiple faults of the system, the maloperation or rejection of circuit breaker or protection, the loss of information caused by channel interference, and so on. It's not good for fault judgment. Therefore, it is of great significance to develop an accurate and fast fault diagnosis method for substations with small error information interference, strong fault tolerance and high accuracy. In this paper, the methods and techniques of fault diagnosis for substation equipment are summarized in detail, and on the basis of the summary, the rough set theory, named after the name of Adam net, is introduced. According to the development trend of substation fault diagnosis technology in China, a new fault diagnosis technology based on rough set and Petri net is proposed. Secondly, because most substations are built and put into production by stages, and only one voltage level is usually involved in an extension, the substation can be divided into several relatively independent regions according to the voltage level. When the connection structure or protection configuration of the substation is changed, the diagnostic model is re-constructed for the changed area, and the other areas are not affected. Then the fault decision table is established for each region, and the attribute and attribute value reduction of the rough set decision table is carried out to obtain the minimum diagnosis rule. Because Petri nets have the characteristics of fast reasoning search, mathematical diagnosis process and graphical structure representation, the diagnosis rules are described by Petri nets, and the diagnosis models of each region are established, and the efficient diagnosis of substation faults is realized. Finally, taking 110kV Renshe substation as a case study, the fault diagnosis model of each region is established by using Petri net and rough set combined sub-region fault diagnosis method. Then, the sample test of the model and the analysis and comparison of the algorithm are carried out. The results show that this method has great advantages in dealing with the problem speed and fault diagnosis efficiency of substation equipment. It can improve the processing efficiency and ensure the safe operation of substation operation.
【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】：2015
【分類號(hào)】：TM63;TP18

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 蔡樂(lè),鄧佑滿,朱小平;改進(jìn)的配電網(wǎng)故障定位、隔離與恢復(fù)算法[J];電力系統(tǒng)自動(dòng)化;2001年16期

2 焦邵華,焦燕莉,程利軍,鮑喜,劉萬(wàn)順;饋線自動(dòng)化的最優(yōu)控制模式[J];電力系統(tǒng)自動(dòng)化;2002年21期

3 萬(wàn)官泉;汪穗峰;張堯;戴保明;吳國(guó)沛;;基于電流安全裕度狀態(tài)空間截?cái)嗟目煽啃运惴╗J];電力系統(tǒng)自動(dòng)化;2008年05期

4 吳軍基,劉翔,楊偉;基于DSP的FTU的研究和設(shè)計(jì)[J];電力自動(dòng)化設(shè)備;2003年12期

5 周洪;羅星;鄧其軍;;基于DSP的智能配電網(wǎng)環(huán)網(wǎng)柜FTU的設(shè)計(jì)[J];電力自動(dòng)化設(shè)備;2011年02期

6 任建文,周明,李庚銀;電網(wǎng)故障信息綜合分析及管理系統(tǒng)的研究[J];電網(wǎng)技術(shù);2002年04期

7 劉海濤;沐連順;蘇劍;;饋線自動(dòng)化系統(tǒng)的集中智能控制模式[J];電網(wǎng)技術(shù);2007年23期

8 程林,郭永基;可靠性評(píng)估中多重故障算法的研究[J];清華大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年03期

，

本文編號(hào)：2017332