静止无功补偿装置在大型LF炉的设计应用

发布时间：2018-05-18 13:51

本文选题：LF炉 + 无功补偿　；参考：《东北大学》2014年硕士论文

【摘要】：钢铁企业实施无功补偿,对企业提高供电可靠性,节能减排,降低损耗,提高用电设备效率,保证产品质量有着非常重要的意义。静止无功补偿装置(SVC)具有响应速度快、性价比高等特点,目前广泛应用于钢铁企业。本文以实际工程为例,重点介绍了静止无功补偿装置(SVC)在大型LF炉中的设计应用。LF炉是钢铁企业一种典型的冲击性负荷,正常生产时给电网带来了无功冲击,产生了大量的谐波,致使系统电压波动、电压波形畸变率、功率因数等指标均超过国家标准,严重威胁供电系统的安全运行。本文对首钢第二炼钢厂210吨LF炉投入运行后,对电网无功冲击及注入谐波进行了分析,对电能质量进行了综合评估,结果显示各项指标均超过国家标准,因此必须装设静止无功补偿装置。本文深入分析研究了各类无功补偿装置的原理、对比了各种补偿装置的优缺点,提出了采用TCR+FC型静止无功补偿装置的系统性解决方案。本文详细阐述了TCR型静止无功补偿装置的参数设计、控制系统设计方案,进行了滤波器装置方案选择,确定滤波器形式,并对滤波器参数进行了安全性校验,最后通过仿真软件对SVC投入后的治理效果进行仿真验证。通过对现场实际装置投用后电压波动、谐波电流、母线电压畸变率、功率因数等参数的测试,结果表明各项指标符合要求,达到了预期效果,取得了良好的社会经济效益。
[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.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TF748;TM761.12

【参考文献】