本文選題：高壓直流輸電 + 換流閥��； 參考：《華北電力大學(xué)》2014年碩士論文

【摘要】：換流閥為換流站的核心設(shè)備,其在運(yùn)行中通過的大電流會產(chǎn)生大量的熱量,會導(dǎo)致晶閘管和電抗器等閥組件元件的溫度上升,這就需要有閥水冷卻系統(tǒng)對換流閥進(jìn)行冷卻。 本文通過對不同廠家技術(shù)的閥水冷系統(tǒng)進(jìn)行詳細(xì)研究,分析其優(yōu)缺點,并對歷史故障進(jìn)行舉例分析,不僅可以使運(yùn)維人員對直流輸電閥水冷系統(tǒng)結(jié)構(gòu)有所熟悉,而且對故障發(fā)生時的分析處理提供了可靠經(jīng)驗和指導(dǎo)方向。通過對各閥水冷技術(shù)優(yōu)缺點的比較,達(dá)到取長補(bǔ)短的目的。 本文的主要研究內(nèi)容有： 1、結(jié)合ABB和高瀾閥水冷技術(shù)特點,介紹閥水冷技術(shù)的現(xiàn)狀和基本功能,引出本文研究方向和意義； 2、結(jié)合直流換流站現(xiàn)場實際,介紹閥水冷系統(tǒng)硬件組成,重點介紹閥內(nèi)、外水冷系統(tǒng)主回路各部分硬件回路的功能,并重點對現(xiàn)在常用兩種外冷水水質(zhì)處理模式原理進(jìn)行比對分析； 3、以華新?lián)Q流站和楓涇換流站為例,介紹閥水冷控制系統(tǒng)組成,重點介紹ABB和高瀾閥水冷控制系統(tǒng)的特點并將兩者進(jìn)行對比分析,進(jìn)而討論主泵切換邏輯和冷卻塔投切邏輯。 4、結(jié)合南橋站和膠東站的工程實際運(yùn)用,介紹閥水冷保護(hù)原理及功能并將兩者進(jìn)行對比分析。詳細(xì)闡述工程中對閥水冷相關(guān)保護(hù)的規(guī)定和要求,并以高嶺換流站保護(hù)定值設(shè)置不合理導(dǎo)致直流系統(tǒng)閉鎖為例加以總結(jié)。
[Abstract]:The converter valve is the core equipment of the converter station. The large current passing through it will produce a lot of heat, which will cause the temperature of valve components such as thyristor and reactor to rise, which requires the valve water cooling system to cool the converter valve. In this paper, the valve water cooling system of different manufacturers is studied in detail, its advantages and disadvantages are analyzed, and the historical faults are analyzed with examples. The operation and maintenance personnel are not only familiar with the structure of HVDC transmission valve water cooling system. It also provides reliable experience and guidance for the analysis and treatment of faults. By comparing the merits and demerits of each valve water cooling technology, the purpose of complementing each other is achieved. The main contents of this paper are as follows: 1. According to the characteristics of ABB and water cooling technology, the present situation and basic functions of valve water cooling technology are introduced, and the research direction and significance of this paper are introduced. 2. According to the actual situation of DC converter station, the hardware composition of valve water cooling system is introduced, and the function of each part of main circuit of valve water cooling system is introduced emphatically. The principle of two kinds of water quality treatment modes of external cold water is compared and analyzed. 3. Taking Huaxin converter station and Fengjing converter station as examples, the composition of valve water cooling control system is introduced. The characteristics of ABB and high Lan valve water cooling control system are introduced and compared with each other, and the main pump switching logic and cooling tower switching logic are discussed. 4. Combined with the practical application of Nanqiao Station and Jiaodong Station, the principle and function of valve water cooling protection are introduced and compared with each other. The regulations and requirements of valve water cooling related protection in engineering are described in detail, and a conclusion is made with the example that the unreasonable setting of protection setting of Gaoling converter station leads to the locking of DC system.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM721.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 肖金球,徐樹梅,高麗燕;水污染淤積密度指數(shù)自動在線測試裝置[J];傳感器技術(shù);2005年06期

2 田杰;高壓直流控制保護(hù)系統(tǒng)的設(shè)計與實現(xiàn)[J];電力自動化設(shè)備;2005年09期

3 田慶;;直流輸電工程閥水冷系統(tǒng)缺陷分析[J];高壓電器;2012年08期

4 田正鑫;;淺析反滲透技術(shù)在電廠水處理中的應(yīng)用[J];科技創(chuàng)新與應(yīng)用;2012年12期

5 陳小軍;何露芽;孫楊;李晶;;±800kV特高壓直流與±500kV常規(guī)直流控制保護(hù)系統(tǒng)比較分析[J];華東電力;2012年03期

6 姚其新;饒洪林;;換流站閥水冷系統(tǒng)隱患分析及治理[J];華中電力;2010年05期

7 余祖奎;盛戈v，

本文編號：1883770