報告書番号

R13025

タイトル（和文）

二次送電系統事故時の単独運転検出特性‐中性点接地方式と地絡事故後の遮断器開放時間等を考慮した評価‐

タイトル（英文）

Characteristic of Detecting Islanding by Distributed Power Generation at Transmission System Fault - Evaluation of Characteristic of Detecting Islanding Considering Neutral Grounding System and Time from Fault to Releasing Circuit Breaker-

概要 （図表や脚注は「報告書全文」に掲載しております）

本報告では、上位送電系統の構成・事故時運用の差異が、単独運転検出特性に与える影響を明らかにする。また、これまでの当所の検討は、単独運転の検出上最も厳しい条件として、回転型分散形電源との混在時を中心に行ってきたが、現在急速に普及しているメガソーラ用PCSと混在した場合も必要と考え評価した。さらに、これらを評価する際の条件を決める目的で、従来型PCSの単独運転検出方式の能動信号の相互干渉性を評価した。

概要 （英文）

The expectation for renewable energy grows after an East Japan great earthquake, and introduction is progressing focusing on photovoltaic or wind power. Ignited by the FIT enforced in July, 2012, it is expected that introduction will accelerate further. On the other hand, when renewable energy is introduced in large quantities, it is said that it has the influence on protection, security, and electric power quality, and we are anxious about the influence on an electric power system. In particular, prevention of the islanding phenomena in case of a distribution line fault and the influence on the voltage management by revers power flow been considered as near problems. If near problems are solved, it will be problem that the transformer of the substation for power distribution system cannot flow reverse power flow. This has the problem of protection / security side and an electric power quality side, and is forbidden uniformly.
In this report, we confirmed that the difference of transmission system and operation at fault influences on prevention of the islanding phenomena, mega photovoltaic generation influence on prevention of the islanding phenomena.

報告者

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