Title:
配電線の三相接続順を判定する方法
Document Type and Number:
Japanese Patent JP7211746
Kind Code:
B2
Abstract:
To provide a method for easily determining the three-phase connection order of power distribution line by using existing power distribution equipment.SOLUTION: A master station device of a power distribution automatic system causes one of automatic voltage adjusters (SVR, TVR, SVC, etc.), installed in a power distribution system, to deliberately generate, for a short time (several seconds) a voltage change (for example, an amount corresponding to one tap in a case where the automatic voltage adjuster is SVR or TVR) within one of the three phases of a power distribution line. A slave station device (for detecting a ground fault, a short circuit, a disconnection, a voltage, a current) connected to an automatic switch at or after an installation point of the automatic voltage adjuster caused to change a voltage, detects a phase of the changed voltage (or measures the voltages of all the three phases) and notifies the master station device of the detection. Based on a detection result acquired from the slave station device (or voltage measurement values of all the three phases), the master station device determines the connection order of the three phases in a section of a power distribution line separated by each slave station device.SELECTED DRAWING: Figure 1
Inventors:
Mizutani Tadashi
Application Number:
JP2018177047A
Publication Date:
January 24, 2023
Filing Date:
September 21, 2018
Export Citation:
Assignee:
Aichi Electric Co., Ltd.
International Classes:
G01R31/55; G01R29/18
Domestic Patent References:
| JP2016125935A | ||||
| JP2011242195A | ||||
| JP57168171A | ||||
| JP2003185693A | ||||
| JP5163482A |
Foreign References:
| WO2018138785A1 |
Other References:
野村英生;小嶋利朗;横井博徳;増田康夫;今井孝;水谷忠;藤井章;佐藤一彦,「新型配電線自動化システムの開発」,愛知電機技報,愛知電機株式会社,2005年05月24日,No. 26,pp. 4-9