報告書番号

R15015

タイトル（和文）

配電系統における第5次高調波電圧の形成要因の分析―高調波電圧の特性と低減するためのSC条件―

タイトル（英文）

Analysis of Formative Factor for Fifth Harmonic Voltage in Distribution Systems - Characteristics of Harmonic Voltage and SC Conditions for Reduction Measure -

概要 （図表や脚注は「報告書全文」に掲載しております）

電力系統の高調波電圧は全体的には減少傾向にあるが，一部には依然として高調波電圧が高い配電線がある。これまでに，地域の負荷種別構成に応じた第5次高調波（以下，高調波）電流を推定し，力率改善用コンデンサの条件が各地域の配電線の高調波電圧の形成に与える影響を明らかにした。次に，各地域の配電線の特性を個別に解析し，一部の配電線で高調波電圧が高くなる要因を明らかにすることが望まれている。
そこで，本報告では，高調波電圧が高い配電線におけるSCの影響と高調波電圧の特性を解析により解明し，高調波電圧を低減するSC条件を明らかにする。

概要 （英文）

The harmonic voltage of power system in Japan is decreasing in whole. However, there is also high harmonic voltage in some distribution feeder. So far, in order to clarify the formative factor of the fifth harmonic voltage in distribution systems, estimates fifth harmonic (from here on, fifth harmonic refer to harmonic) current corresponding to load type of distribution feeder, an impact of static capacitors was clarified. Therefore, it is desired to clarify the formative factor for high harmonic voltage feeder.
In this report, the effects of shunt capacitor (SC) conditions in the case of high harmonic voltage and the characteristics of harmonic voltage are analyzed, and the conditions for reducing the harmonic voltage were considered.
(1) Analyses with impacts of SC and characteristics of harmonic voltage, with the longer distribution feeder, with the more SC capacity of distribution feeder, there is high harmonic voltage level in spite of high penetration level of SC with series reactor (L).
(2) In general, the decrease of SC without L or the increase of SC with L decreases harmonic voltage. When the concentration of SC with L at sending of feeder and SC without L at end of feeder, it became negative impact. In this condition, the increase of SC without L or the decrease of SC with L decreases harmonic voltage.

報告者

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