【摘要】 无功补偿和谐波抑制是涉及电气自动化、电力系统、电力电子、电工学和控制理论等多学科的一门课题。谐波和无功的存在不仅降低了电力系统设备的供电效率,而且大量的谐波还会危害公共电网的安全,干扰临近用电设备的正常运行。另一方面,三相电力系统中的不对称也危害电网及临近设备的安全。本文提出了两种基于瞬时无功功率理论的谐波电流检测方法,通过M atlab仿真和实验证明了方法的正确性。更多还原

【Abstract】 The project of reactive power compensation and harmonic reduction involve the study of electric automatization,power system,power electronics,electrotechnics and control theory.The existence of reactive power and harmonic not only debase the efficiency of power system supply,but also large amount of harmonic harm the public electric network as well,disturbing the normal operation of nearby electro-equipment.On the other hand,the asymmetric system in three-phase power system harms electric networks and security of nearby electro-equipment.This paper provides two harmonic current detection methods based on the theory of instantaneous reactive power.The Matlab simulation and test have proved the validity of the methods.更多还原