本文選題：分布式IED + 廣域后備保護(hù)　； 參考：《山東大學(xué)》2017年碩士論文

【摘要】：近年來(lái),伴隨著電網(wǎng)的發(fā)展,電網(wǎng)智能化水平在不斷提高,新型發(fā)電能源如風(fēng)能、太陽(yáng)能等清潔能源發(fā)電量占比明顯提升,同時(shí)分布式單元的大量接入,都使得未來(lái)電網(wǎng)的發(fā)展將形成骨干電網(wǎng)與地方電網(wǎng)及微電網(wǎng)相結(jié)合的第三代智能電網(wǎng),電網(wǎng)拓?fù)浣Y(jié)構(gòu)將從整體上更加松散,新生連結(jié)點(diǎn)的平均路徑將變大,傳統(tǒng)的繼電保護(hù)系統(tǒng)難以滿足新型電網(wǎng)的保護(hù)需要,繼電保護(hù)系統(tǒng)的更新?lián)Q代勢(shì)在必行。廣域保護(hù)技術(shù)的提出和發(fā)展提供了新的契機(jī)。通過(guò)建立廣域通信平臺(tái),獲知系統(tǒng)內(nèi)的多點(diǎn)信息,實(shí)現(xiàn)對(duì)故障進(jìn)行快速的定位和隔離,特別適合應(yīng)用于對(duì)決策響應(yīng)時(shí)限要求不太高的后備保護(hù)系統(tǒng)。但是廣域后備保護(hù)系統(tǒng)的大量相關(guān)研究中,并沒(méi)有跳出針對(duì)系統(tǒng)元件設(shè)立保護(hù)裝置的視角,未能從根本上解決保護(hù)配合復(fù)雜、保護(hù)裝置難以標(biāo)準(zhǔn)化的問(wèn)題。分布式系統(tǒng)作為廣域保護(hù)研究的重要組成部分,在很多研究方向上存在尚未形成統(tǒng)一的討論范式。綜上,本文從分布式的角度,提出了用廣域手段設(shè)計(jì)保護(hù)配置方案的解決思路,建立以斷路器IED為保護(hù)系統(tǒng)基本結(jié)構(gòu)和功能單元的分布式系統(tǒng)架構(gòu),定義了其基本工作方式和故障保護(hù)策略。該系統(tǒng)中,保護(hù)配置的對(duì)象從原來(lái)的系統(tǒng)元件轉(zhuǎn)變?yōu)橄到y(tǒng)中出現(xiàn)的故障,保護(hù)裝置的配合對(duì)象也從原來(lái)的元件保護(hù)裝置轉(zhuǎn)變?yōu)橐欢ǚ秶鷥?nèi)的IED智能裝置。借此,斷路器IED能夠知曉確切的故障位置,從而簡(jiǎn)化了保護(hù)的配合方式,提高了保護(hù)動(dòng)作的快速性和選擇性,也重新定義了系統(tǒng)的后備保護(hù)功能,真正實(shí)現(xiàn)了分布式測(cè)量、決策和執(zhí)行的分布式后備保護(hù)功能。提出了以IED為基礎(chǔ)的保護(hù)范圍劃分原則。明確系統(tǒng)中IED的配合原則,實(shí)現(xiàn)以IED為配合對(duì)象的新型近后備、遠(yuǎn)后備保護(hù)功能,不同系統(tǒng)位置的斷路器IED,能夠在各種故障情形中明確自身的近后備、遠(yuǎn)后備保護(hù)配合對(duì)象。針對(duì)不同保護(hù)范圍的重疊情形,該原則進(jìn)行了相應(yīng)的制定和說(shuō)明,且充分考慮到了某IED拒動(dòng)后的保護(hù)處理原則。在不同系統(tǒng)運(yùn)行方式下,以及系統(tǒng)元件之間的不同連接狀態(tài),分析了劃分原則的適應(yīng)性,得到了可靠性高、選擇性強(qiáng)的結(jié)論。該劃分過(guò)程簡(jiǎn)單,較傳統(tǒng)的劃分方法有一定的優(yōu)越性體現(xiàn)。提出了以三種保護(hù)結(jié)構(gòu)為基礎(chǔ)的保護(hù)配置方案。首先,提出了以故障方向縱聯(lián)比較為基礎(chǔ)的廣域保護(hù)原理。該原理通過(guò)規(guī)定不同結(jié)構(gòu)中的IED正方向,對(duì)方向判斷結(jié)果進(jìn)行賦值,實(shí)現(xiàn)IED之間通過(guò)信息交換達(dá)到故障定位的目的。判斷信息構(gòu)成簡(jiǎn)單,獲取方便,對(duì)通信系統(tǒng)的壓力較小,能夠保證對(duì)故障的準(zhǔn)確定位。以此為基礎(chǔ),結(jié)合保護(hù)范圍劃分原則,對(duì)系統(tǒng)中的IED類型進(jìn)行分類,提出了"線路—母線"、"線路—變壓器"和"母線—變壓器"三種保護(hù)結(jié)構(gòu),并對(duì)三種保護(hù)結(jié)構(gòu)中的故障處理過(guò)程進(jìn)行了分析和說(shuō)明。該方法簡(jiǎn)化了保護(hù)單元的配合方式,克服了以整定值為后備保護(hù)基礎(chǔ)的固有缺陷,實(shí)現(xiàn)了保護(hù)裝置的標(biāo)準(zhǔn)化,為系統(tǒng)元件提供了更加綜合化的后備保護(hù)功能。最后,通過(guò)系統(tǒng)模擬算例的分析,印證了該實(shí)現(xiàn)方案的有效性和準(zhǔn)確性。
[Abstract]:In recent years, with the development of the power grid, the intelligent level of the power grid is increasing continuously. The new generation of power generation energy, such as wind energy, solar energy and so on, has been greatly improved. At the same time, the large number of access of the distributed unit makes the development of the future power grid will form the third generation of smart electricity, which combines the backbone power grid with the local power grid and the micro grid. The network topology will be more loose from the whole, the average path of the new connecting points will become larger. The traditional relay protection system is difficult to meet the protection needs of the new type of power grid. The renewal and replacement of the relay protection system is imperative. The development and development of the wide area protection technology provide a new opportunity. The multi-point information in the system can locate and isolate the fault quickly, and it is especially suitable for the backup protection system which is not very high in the time limit of decision response. However, in the extensive related research of the wide area backup protection system, it does not jump out of the view of setting up the protection device for the system components, and can not solve the protection match fundamentally. As an important part of wide area protection research, distributed system is an important part of wide area protection research. In many research directions, there is not a unified discussion paradigm in many research directions. In this paper, from a distributed perspective, this paper puts forward a solution for the design of protection configuration with wide area means, which is based on a circuit breaker IED. The basic structure and the distributed system architecture of the basic structure and function unit of the protection system, the basic work mode and the fault protection strategy are defined. In this system, the object of the protection configuration is changed from the original system component to the fault in the system, and the matching object of the protection device is also changed from the original component protection to a certain range of IED intelligence. In this way, the circuit breaker IED can know the exact location of the fault, thus simplifies the mode of protection, improves the speed and selectivity of the protection action, redefines the backup protection function of the system, and realizes the distributed backup protection function of distributed measurement, decision and execution. The IED based protection is put forward. The principle of protection range division. To clarify the coordination principle of IED in the system, to realize the new near back-up, remote backup protection function with IED as the matching object, the circuit breaker IED of different system position, can clear its own near backup, remote backup protection coordination object in all kinds of fault situations. The principle is carried out on the overlapping of different protection range. According to the corresponding formulation and explanation, the principle of protection and treatment of a certain IED is fully taken into account. Under different operating modes of the system and the different connection states between the components of the system, the adaptability of the partition principle is analyzed, and the conclusion of high reliability and selectivity is obtained. The division process is simple and better than the traditional method of division. The protection configuration scheme based on three protective structures is proposed. First, a wide area protection principle based on the longitudinal comparison of the fault direction is proposed. This principle assigns the direction judgment result through the regulation of the positive direction of IED in different structures, and realizes the purpose of achieving the fault location between IED through information exchange. The broken information is simple, easy to obtain, less pressure on the communication system, and can guarantee the accurate location of the fault. Based on this, the IED types in the system are classified according to the principle of protection range division, and three protective structures of "line bus", "line transformer" and "bus transformer" are put forward, and three kinds of protection junctions are also given. The process of fault treatment in the structure is analyzed and explained. This method simplifies the coordination mode of the protection unit, overcomes the inherent defects of the setting value as the backup protection foundation, realizes the standardization of the protection device, and provides a more comprehensive backup protection work for the system components. Finally, the analysis of the system simulation example is confirmed. The effectiveness and accuracy of the implementation of this scheme.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM77

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 周紅杰;趙鋒;;智能化變電站繼電保護(hù)技術(shù)的發(fā)展[J];通訊世界;2015年12期

2 龔石林;曾臻;馮彥釗;張兆云;陳衛(wèi);王晨;;基于網(wǎng)絡(luò)拓?fù)涞碾娏鞑顒?dòng)站域保護(hù)[J];云南電力技術(shù);2015年01期

3 彭放;高厚磊;孔凡東;劉益青;;智能變電站站域后備保護(hù)裝置開(kāi)發(fā)與測(cè)試[J];北京交通大學(xué)學(xué)報(bào);2014年05期

4 王媛;焦彥軍;馬葉芝;;利用本地信息實(shí)現(xiàn)新型站域保護(hù)方案[J];電力系統(tǒng)及其自動(dòng)化學(xué)報(bào);2014年08期

5 梅生偉;龔媛;劉鋒;;三代電網(wǎng)演化模型及特性分析[J];中國(guó)電機(jī)工程學(xué)報(bào);2014年07期

6 魏曜;張堯;張勇剛;胡再超;;一起高阻接地故障時(shí)線路差動(dòng)保護(hù)拒動(dòng)的分析及其改進(jìn)研究[J];電力系統(tǒng)保護(hù)與控制;2014年02期

7 吳水蘭;宋小會(huì);劉洋;郭志忠;蔡常群;;變壓器高、低壓側(cè)后備保護(hù)的配合問(wèn)題分析[J];電力系統(tǒng)保護(hù)與控制;2014年01期

8 邱建;曾耿暉;李銀紅;李一泉;朱曉華;;一種220kV線路零序后備保護(hù)整定優(yōu)化方案及其風(fēng)險(xiǎn)概率分析[J];廣東電力;2013年12期

9 周孝信;陳樹(shù)勇;魯宗相;;電網(wǎng)和電網(wǎng)技術(shù)發(fā)展的回顧與展望——試論三代電網(wǎng)[J];中國(guó)電機(jī)工程學(xué)報(bào);2013年22期

10 蔡小玲;王禮偉;林傳偉;張繼芬;黃衛(wèi)平;;基于智能變電站的站域保護(hù)原理和實(shí)現(xiàn)[J];電力系統(tǒng)及其自動(dòng)化學(xué)報(bào);2012年06期

相關(guān)博士學(xué)位論文 前5條

1 姜憲國(guó);以變電站為基本單元的區(qū)域后備保護(hù)研究[D];華北電力大學(xué);2013年

2 李振興;智能電網(wǎng)層次化保護(hù)構(gòu)建模式及關(guān)鍵技術(shù)研究[D];華中科技大學(xué);2013年

3 劉益青;智能變電站站域后備保護(hù)原理及實(shí)現(xiàn)技術(shù)研究[D];山東大學(xué);2012年

4 高翔;數(shù)字化變電站若干關(guān)鍵技術(shù)研究[D];浙江大學(xué);2008年

5 叢偉;廣域保護(hù)系統(tǒng)結(jié)構(gòu)及故障判別算法研究[D];山東大學(xué);2005年

相關(guān)碩士學(xué)位論文 前7條

1 孫偉兵;面向智能變電站的分布式母線保護(hù)研究[D];山東大學(xué);2012年

2 王希;廣域自適應(yīng)保護(hù)新原理的研究[D];華北電力大學(xué);2012年

3 田聰聰;基于故障方向信息的廣域后備保護(hù)系統(tǒng)[D];華中科技大學(xué);2012年

4 江榮舟;基于集中決策的廣域后備保護(hù)研究[D];華中科技大學(xué);2011年

5 陳正邦;110kV數(shù)字化變電站繼電保護(hù)配置方案的研究[D];華南理工大學(xué);2010年

6 程少龍;高壓電網(wǎng)廣域縱聯(lián)保護(hù)算法研究[D];南京理工大學(xué);2009年

7 蔡黎;220-500kV線路后備保護(hù)配置及整定計(jì)算原則簡(jiǎn)化研究[D];華中科技大學(xué);2007年

，

本文編號(hào)：2060237