摘要
本文对380 V和10 kV负荷无功补偿需要装设的电容器容量,列出了计算公式,给出了每千瓦有功负荷功率因数从cosφ1提高到cosφ2,在电容器和负荷额定电压同为380 V或10 kV时,需装设电容器容量的计算系数(补偿率)。文中强调:当选用的电容器额定电压高于电网电压380 V或10 kV时,应将计算得出需要补偿的电容器容量乘以电压平方比值系数,并考虑串联电抗器对电容器容量增大的因素,这样计算选用的电容器额定容量,在实际运行电压380 V或10 kV下,其实际容量才能满足期望的补偿效果。作者在该文的附表中提供了大量的电容器组合数据,并提出了单个电容器容量大、小搭配组合的建议,给设计和审图工作提供了方便,并实现了电容器的微调投切,使功率因数稳定在设定的整定值下运行。
In this paper, the calculation formula for capacity of capacitor to be installed for the need of reactive power compensation at load 380 V and 10 kV is listed,the active load power factor increased from cos^l to cos^p2 per kW is given. When rated voltage of capacitor and of load is 380 V or 10 kV the calculation coefficient （compensation rate） of the needed capacitors capacity is given. It is stressed in the paper that when rated voltage of selected capacitor is higher than the network voltage, the needed compensation capacitor＇s capacity obtained by calculation should be multiplied by the coefficient of square ratio of voltage, and the factor of capacity increase of capacitor by series reactors should be con- sidered, so as to the rated capacity of selected capacitor by calculation can meet the expected compen- sation result at actual operation voltage of 38 kV or 10 kV. In the attachment table of the paper,the large number of combination data are provided by the authors and the suggestions on combination of different capacity of single capacitor are proposed, which provides convenience in design and drawing review, achieves fine tuning switching of capacitor and keeps power factor operate at defined settings.
出处
《电力电容器与无功补偿》
2013年第5期7-12,共6页
Power Capacitor & Reactive Power Compensation
