力率改善用適相コンデンサを活用した配電系統の電坮不平衡抑制手法

摘要

高度情報化社会の進展に伴い，電力安定供給の観点から，rn電圧，不平衡，高調波等の電力品質維持が要求されている。rn配電系統における将来的な電力使用形態を考えると，近年rnの民生分野におけるオール電化住宅や太陽光発電の急速なrn普及により，エコキュートなどの夜間使用機器による単rn相電力需要の増大や，太陽光発電による単相電力の逆潮流rn等が想定される。%In recent years, it has been very important to adequately keep power qualities such as voltage and imbalance and so on. Especially the imbalance of voltage on distribution system may increase in the future by increasing electrified houses. Therefore it is necessary to decrease imbalance of voltage all the time in cooperation with electric power company and consumers. The high voltage consumers usually install static capacitors (SC) in order to improve power factor at receiving point. In this paper authors propose the method that these SCs in consumers are controlled in order to decrease the imbalance of voltage on distribution line. By the proposed method, single phase SCs are installed and the amounts of these SCs are decided in cooperation with several consumers that the proposed method is installed. The effect of the proposed method is confirmed by numerical simulation. Furthermore the effective scheme for introducing the proposed method to consumers is studied in this paper.