Title:
VOLTAGE APPROXIMATE VALUE OPERATION DEVICE, DISTRIBUTION SYSTEM VOLTAGE CONTROLLER, AND VOLTAGE APPROXIMATE VALUE OPERATION PROGRAM
Document Type and Number:
Japanese Patent JP2017011936
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a voltage approximate value operation device, distribution system voltage controller, and voltage approximate value operation program that do not require information on a lot of measurement devices and a distribution system.SOLUTION: A voltage approximate value operation device includes: a measurement value input unit 11a to which voltage values and power values from a pair of adjacent measurement points provided on a distribution line 2 are input; a first operation unit 11b that, on the basis of the voltage values and power values input to the measurement value input unit 11a, calculates first voltage values obtained in the case of changing the distribution line 2's impedance in the direction from one measurement point to the other measurement point at predetermined intervals; a second operation unit 11c that, on the basis of the voltage values and power values input to the measurement value input unit 11a, calculates second voltage values obtained in the case of changing the distribution line 2's impedance in the direction from the other measurement point to the one measurement point at predetermined intervals; a virtual middle node determination unit 11d that takes a point, at which a first voltage value is equal to a second voltage value, as a virtual middle node; and a voltage approximate value output unit 11e that outputs a voltage value Vm at the virtual middle node, as a voltage approximate value.SELECTED DRAWING: Figure 2
Inventors:
KIMURA MISAO
Application Number:
JP2015127072A
Publication Date:
January 12, 2017
Filing Date:
June 24, 2015
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H02J3/18; H02J3/00
Attorney, Agent or Firm:
Kiuchi Mitsuharu