To provide a transformation system using both a substation with a low power reception capacity and a power storage device, which is low-cost, highly reliable and can secure power performance required for a train to travel while suppressing power reception from a power system to a rated capacity or less.SOLUTION: A transformation system includes: a first AC-DC power conversion device 101 that converts AC power from a power system into DC power: a first DC power conversion device 102 that converts DC power from the first AC-DC power conversion device; and a second DC power conversion device 103 that performs power transmission/reception to/from a feeder wire. A power storage device 104 is connected between the first DC power conversion device and the second DC power conversion device to charge electric power from the feeder wire via the second DC power conversion device and to discharge electric power to the feeder wire via the second DC power conversion device. The first DC power conversion device is controlled by an output having a rated capacity or less, and control is executed so that discharge from the power storage device compensates for shortage of power in the second DC power conversion device.SELECTED DRAWING: Figure 1
【課題】低受電容量の変電所と電力貯蔵装置を併用した変電システムにおいて、電力系統からの受電を定格容量以下に抑えつつ、列車が走行する上で必要な電力性能を確保可能な低コストで信頼性の高い変電システムを提供する。【解決手段】変電システムは、電力系統からの交流電力を直流電力に変換する第1の交直電力変換装置101と、第1の交直電力変換装置からの直流電力を変換する第1の直流電力変換装置102と、き電線との電力送受を行う第2の直流電力変換装置と103を備える。第1の直流電力変換装置と第2の直流電力変換装置の間には、第2の直流電力変換装置を経由し、き電線からの電力を充電するとともに、第2の直流電力変換装置を経由し、き電線に対して放電を行う電力貯蔵装置104を接続する。第1の直流電力変換装置を定格容量以下の出力で制御し、第2の直流電力変換装置での電力の不足分を電力貯蔵装置からの放電により補うよう制御する。【選択図】図1
TRANSFORMATION SYSTEM, CONTROL METHOD FOR TRANSFORMATION SYSTEM, AND ELECTRIC RAILWAY SYSTEM
変電システムおよび変電システムの制御方法、電気鉄道システム
2022-07-27
Patent
Electronic Resource
Japanese
IPC: | B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES |
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