發(fā)布時間：2019-03-22 17:58

【摘要】：隨著現(xiàn)代大電網(wǎng)的互聯(lián),網(wǎng)架結(jié)構(gòu)越來越復(fù)雜,電網(wǎng)對于各個供用電環(huán)節(jié)的可靠性也有更高的要求。在不增加電力設(shè)備的前提下,提高現(xiàn)有設(shè)備的運行可靠性可以有效提高供電設(shè)備的可靠性,保障電力系統(tǒng)的安全穩(wěn)定運行。在電廠中,提高發(fā)電廠系統(tǒng)供電可靠性的主要手段是對基礎(chǔ)供電設(shè)備進行檢修,以達到提高整個供電系統(tǒng)可靠性的目的。如何高效安全的進行檢修,是如今的一大科研方向,目前的檢修方式對于萌芽狀態(tài)的電氣設(shè)備以及電廠運行不能夠防患于未然。在線狀態(tài)監(jiān)測系統(tǒng)可以對電力設(shè)備的實時狀態(tài)進行評估,通過對電力設(shè)備的實時狀態(tài)進行掌握,得到其運行時的安全狀態(tài),可以在設(shè)備故障前施行對應(yīng)的措施,排除安全隱患,避免電力事故。本文根據(jù)600MW火力發(fā)電廠的實際設(shè)備配置為前提,采集所檢測各個設(shè)備的實時狀態(tài)信息,并且對所收集的狀態(tài)信息加以分析、處理,研究了本電廠的設(shè)備實時在線狀態(tài)監(jiān)測,其主要工作如下:(1)總體介紹600MW火力發(fā)電廠的電力設(shè)備所裝設(shè)的在線監(jiān)測設(shè)備,包括變壓器、發(fā)電機、斷路器、隔離開關(guān)、避雷器以及電容型設(shè)備的在線監(jiān)測裝置,并著重介紹某600MW電廠的在線監(jiān)測總體情況,并根據(jù)變壓器的信號采集與流向,設(shè)計了易于操作的信息采集系統(tǒng)與工作平臺。(2)介紹了紅外監(jiān)測技術(shù)的設(shè)計原理、工作原理以及在實際操作中的操作方法以及監(jiān)測診斷方法,并針對每個電力設(shè)備,介紹了如何應(yīng)用紅外監(jiān)測判斷設(shè)備的隱患狀態(tài)。(3)結(jié)合600MW電廠運行實際,介紹了變壓器蝶閥不暢、發(fā)電機線棒接觸不良、斷路器內(nèi)部接觸不良、隔離開關(guān)刀口壓接不良、避雷器內(nèi)部受潮等紅外檢測技術(shù)應(yīng)用際案,說明了在線監(jiān)測設(shè)備是如何判斷設(shè)備安全隱患、為檢修提供指導(dǎo)的。
[Abstract]:With the interconnection of modern large power grid, the structure of grid becomes more and more complex, and the reliability of each link of power supply and power supply is required more and more. On the premise of not adding power equipment, improving the operation reliability of existing equipment can effectively improve the reliability of power supply equipment and ensure the safe and stable operation of power system. In the power plant, the main means to improve the power supply reliability of the power plant system is to overhaul the basic power supply equipment, in order to improve the reliability of the whole power supply system. How to carry out maintenance efficiently and safely is a major scientific research direction nowadays. The current maintenance methods can not prevent the budding electrical equipment and the operation of power plants in the future. The on-line condition monitoring system can evaluate the real-time state of electric power equipment. Through mastering the real-time state of electric power equipment, it can get the safe state of its running time. The corresponding measures can be implemented before the equipment failure, and the hidden danger of safety can be eliminated. Avoid an electrical accident. According to the real-time equipment configuration of 600MW thermal power plant, this paper collects the real-time state information of each equipment detected, analyzes and processes the collected state information, and studies the real-time on-line state monitoring of the equipment in this power plant. The main work is as follows: (1) the on-line monitoring equipment installed in the electric equipment of 600MW thermal power plant, including transformer, generator, circuit breaker, disconnector, lightning arrester and capacitive equipment, is introduced in general. The general situation of on-line monitoring in a 600MW power plant is emphatically introduced. According to the signal acquisition and flow direction of transformer, an easy-to-operate information acquisition system and working platform are designed. (2) the design principle of infrared monitoring technology is introduced. The working principle, the operation method and the monitoring and diagnosis method in the actual operation are introduced, and how to use infrared monitoring to judge the hidden trouble state of the equipment is introduced in view of each electric power equipment. (3) combined with the operation practice of 600MW power plant, This paper introduces the application cases of infrared detection technology, such as the butterfly valve of transformer, the bad contact of generator rod, the bad internal contact of circuit breaker, the bad press connection of disconnecting switch knife edge, and the damp inside of lightning arrester, etc. This paper explains how to judge the hidden danger of equipment safety on-line monitoring equipment, and provides guidance for maintenance.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM621

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