求翻译：摘要：随着电力电子设备在电力系统中的广泛应用，电能质量问题越来越引起社会广泛关注。其中，谐波与不平衡问题是主要核心问题，那么如何正确衡量系统与用户的谐波和不平衡责任至关重要。本文就谐波与不平衡分责指标和方法，从基本原理、计算方法、实用意义三个方面对国内外的研究现状做了综述。是什么意思？

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Summary: with power electronic devices in the electrical system, power quality problems are increasingly have aroused considerable public concern. Among them, harmonics and imbalance is the main core issues, then how to properly measurement system to users of the harmonic and imbalances responsibili

Abstract: Along with the electric power electronic installation in electrical power system widespread application, the electrical energy quality question more and more arouses the social widespread interest.Among them, the overtone with not the balanced question is the main core question, then how w

Abstract: with the wide application of power electronics in power systems and power quality problems and aroused public concern. Among them, the harmonics and imbalances are the main core issues, how to correctly measure harmonics and imbalances in the system and the user responsibilities is essenti

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