本文選題：LF爐 + 無功補(bǔ)償　； 參考：《東北大學(xué)》2014年碩士論文

【摘要】：鋼鐵企業(yè)實(shí)施無功補(bǔ)償,對企業(yè)提高供電可靠性,節(jié)能減排,降低損耗,提高用電設(shè)備效率,保證產(chǎn)品質(zhì)量有著非常重要的意義。靜止無功補(bǔ)償裝置(SVC)具有響應(yīng)速度快、性價(jià)比高等特點(diǎn),目前廣泛應(yīng)用于鋼鐵企業(yè)。本文以實(shí)際工程為例,重點(diǎn)介紹了靜止無功補(bǔ)償裝置(SVC)在大型LF爐中的設(shè)計(jì)應(yīng)用。LF爐是鋼鐵企業(yè)一種典型的沖擊性負(fù)荷,正常生產(chǎn)時(shí)給電網(wǎng)帶來了無功沖擊,產(chǎn)生了大量的諧波,致使系統(tǒng)電壓波動、電壓波形畸變率、功率因數(shù)等指標(biāo)均超過國家標(biāo)準(zhǔn),嚴(yán)重威脅供電系統(tǒng)的安全運(yùn)行。本文對首鋼第二煉鋼廠210噸LF爐投入運(yùn)行后,對電網(wǎng)無功沖擊及注入諧波進(jìn)行了分析,對電能質(zhì)量進(jìn)行了綜合評估,結(jié)果顯示各項(xiàng)指標(biāo)均超過國家標(biāo)準(zhǔn),因此必須裝設(shè)靜止無功補(bǔ)償裝置。本文深入分析研究了各類無功補(bǔ)償裝置的原理、對比了各種補(bǔ)償裝置的優(yōu)缺點(diǎn),提出了采用TCR+FC型靜止無功補(bǔ)償裝置的系統(tǒng)性解決方案。本文詳細(xì)闡述了TCR型靜止無功補(bǔ)償裝置的參數(shù)設(shè)計(jì)、控制系統(tǒng)設(shè)計(jì)方案,進(jìn)行了濾波器裝置方案選擇,確定濾波器形式,并對濾波器參數(shù)進(jìn)行了安全性校驗(yàn),最后通過仿真軟件對SVC投入后的治理效果進(jìn)行仿真驗(yàn)證。通過對現(xiàn)場實(shí)際裝置投用后電壓波動、諧波電流、母線電壓畸變率、功率因數(shù)等參數(shù)的測試,結(jié)果表明各項(xiàng)指標(biāo)符合要求,達(dá)到了預(yù)期效果,取得了良好的社會經(jīng)濟(jì)效益。
[Abstract]:The implementation of reactive power compensation in iron and steel enterprises is of great significance for enterprises to improve the reliability of power supply, save energy and reduce emissions, reduce losses, improve the efficiency of electric equipment and ensure the quality of products. Static Var compensator (SVC) is widely used in iron and steel enterprises because of its fast response speed and high performance to price ratio. Taking the actual project as an example, this paper introduces the design and application of static Var compensator (SVC) in large scale LF furnace, which is a typical impact load in iron and steel enterprises and brings reactive power impact to the power network during normal production. A large number of harmonics are produced, which make the system voltage fluctuation, voltage waveform distortion rate and power factor exceed the national standard, which seriously threaten the safe operation of power supply system. After the 210t LF furnace of Shougang No. 2 steelmaking plant was put into operation, the reactive power impact and harmonic injection were analyzed, and the power quality was comprehensively evaluated. The results showed that all indexes exceeded the national standard. A static Var compensator must therefore be installed. In this paper, the principle of various kinds of reactive power compensators is deeply analyzed, the advantages and disadvantages of various compensators are compared, and a systematic solution using TCR FC static Var compensator is put forward. In this paper, the parameter design and control system design of TCR static Var compensator are described in detail. The filter scheme is selected, the filter form is determined, and the filter parameters are verified. Finally, the effect of SVC is verified by simulation software. By testing the parameters such as voltage fluctuation, harmonic current, bus voltage distortion rate, power factor and so on, the results show that the indexes meet the requirements, achieve the desired results and achieve good social and economic benefits.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TF748;TM761.12

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本文編號：1906075