【摘要】：電力系統(tǒng)由發(fā)電、輸電、變電、配電和用電五個(gè)環(huán)節(jié)構(gòu)成,變壓器是變電站中的重要核心設(shè)備,運(yùn)行狀態(tài)的好壞直接影響到電力安全生產(chǎn)與安全穩(wěn)定運(yùn)行。而變壓器的可靠性的衡量的一個(gè)重要指標(biāo)就是介質(zhì)損耗。為保證電力系統(tǒng)的安全運(yùn)行,必須加強(qiáng)對變電站主變壓器絕緣的監(jiān)測,介質(zhì)損耗測量是絕緣預(yù)防性實(shí)驗(yàn)中必不可少的測試項(xiàng)目。通過對介質(zhì)損耗測量可以反映電氣設(shè)備絕緣一系列缺陷,如絕緣受潮,油或浸漬物臟污或劣化變質(zhì),絕緣中有氣隙發(fā)生放電等。因此介質(zhì)損耗測量是絕緣預(yù)防性實(shí)驗(yàn)中必不可少的測試項(xiàng)目。在一個(gè)變電站,容性設(shè)備占到了變電站總設(shè)備數(shù)量的百分之四十到百分之五十。這些設(shè)備中最重要的是主變套管,套管所有設(shè)備中最容易發(fā)生事故的設(shè)備,因而在在預(yù)防性試驗(yàn)中需要投入大量的工作,它的狀態(tài)的關(guān)系到電網(wǎng)運(yùn)行的狀況,如果設(shè)備出現(xiàn)故障,會(huì)給電力不能帶來經(jīng)濟(jì)效益損失,嚴(yán)重的可能發(fā)生災(zāi)難事故,故障要電力部門付出巨大的代價(jià)。要保證系統(tǒng)的可靠性,需要投入大量的人力和物力,且工作量大。因而通過對變壓器套管進(jìn)行監(jiān)測,不但能保證電網(wǎng)設(shè)備的安全還能取得經(jīng)濟(jì)效益。通過本系統(tǒng)的建設(shè),可以實(shí)時(shí)監(jiān)測變電站主變套管設(shè)備的工作狀態(tài),減少不必要的停電檢修時(shí)間,節(jié)約人力和維修支出,降低成本,為電力運(yùn)營贏得更多寶貴的時(shí)間,獲得更大的經(jīng)濟(jì)效益。通過在線監(jiān)測技術(shù),根據(jù)數(shù)據(jù)的采集周期實(shí)現(xiàn)連續(xù)采集設(shè)備狀態(tài),并根據(jù)介質(zhì)損耗的數(shù)據(jù)分析方法對數(shù)據(jù)進(jìn)行科學(xué)的分析,及時(shí)診斷,根據(jù)參數(shù)對系統(tǒng)的進(jìn)行預(yù)測分析,達(dá)到對問題提早發(fā)現(xiàn)、提早預(yù)警,從而提高設(shè)備可靠性。同時(shí)系統(tǒng)可以實(shí)現(xiàn)與調(diào)度系統(tǒng)接口,可以遠(yuǎn)程對設(shè)備狀態(tài)進(jìn)行監(jiān)測,實(shí)現(xiàn)對有缺陷的設(shè)備或則可能有缺陷的設(shè)備有選擇的提早檢修,減少多次停電帶來的損失。通過遠(yuǎn)程監(jiān)測為變電站無人值守提供技術(shù)支持。本系統(tǒng)采用以C語言為開發(fā)基礎(chǔ),融合了C#、數(shù)據(jù)、電子技術(shù)設(shè)計(jì)多項(xiàng)技術(shù),實(shí)現(xiàn)變壓器套管介質(zhì)損耗在線監(jiān)測,通過本系統(tǒng)提高了介質(zhì)損耗監(jiān)測的自動(dòng)化、降低了工作復(fù)雜度。
[Abstract]:Power system is composed of five links: generation, transmission, substation, distribution and power consumption. Transformer is an important core equipment in substation, and the operation state directly affects the safe and stable operation of electric power. The dielectric loss is an important index to measure the reliability of transformer. In order to ensure the safe operation of the power system, it is necessary to strengthen the monitoring of the insulation of the main transformer in the substation. The measurement of dielectric loss is an essential test item in the preventive experiment of insulation. The measurement of dielectric loss can reflect a series of defects in the insulation of electrical equipment, such as dampness of insulation, dirt or deterioration of oil or maceration, discharge of air gap in insulation and so on. Therefore, dielectric loss measurement is an essential test item in insulation preventive experiment. In a substation, capacitive equipment accounts for 40% to 50% of the total number of substation equipment. The most important of these equipments is the main transformer casing, the equipment that is most prone to accidents in all the casing equipments, so a lot of work is required in the preventive test, and its state is related to the operation of the power grid. If the equipment fails, it will not bring economic benefits to the power loss, serious possible disaster, the failure of the power sector to pay a huge price. To ensure the reliability of the system, a lot of manpower and material resources are needed. Therefore, the monitoring of transformer bushing can not only ensure the safety of power network equipment, but also obtain economic benefits. Through the construction of this system, it can monitor the working condition of substation main transformer casing equipment in real time, reduce unnecessary outage and overhaul time, save manpower and maintenance expenses, reduce cost, and win more precious time for electric power operation. Achieve greater economic benefits. Through on-line monitoring technology, the state of continuous acquisition equipment is realized according to the period of data acquisition, and the data is scientifically analyzed according to the method of data analysis of dielectric loss, and the data is diagnosed in time, and the system is predicted and analyzed according to the parameters. To achieve early detection of problems, early warning, so as to improve the reliability of equipment. At the same time, the system can realize the interface with the dispatching system, monitor the equipment status remotely, realize the selective early overhaul of the defective equipment or possibly defective equipment, and reduce the loss caused by multiple power outages. Provide technical support for unattended substation through remote monitoring. This system adopts C language as the development foundation, integrates the C#, data and electronic technology to design many technologies, realizes the transformer casing dielectric loss on-line monitoring. Through this system, the automation of the dielectric loss monitoring is improved, and the working complexity is reduced.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM855

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相關(guān)期刊論文 前2條

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本文編號：2202516