Title:
ABNORMAL STATE DETECTION DEVICE OF GAS TURBINE, AND ABNORMAL STATE DETECTION METHOD
Document Type and Number:
Japanese Patent JP2018080621
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To properly detect occurrence of an abnormal state as instable physical phenomenon of a gas turbine by a comparatively simple analysis method.SOLUTION: An abnormal state detection device includes pressure related value detection means 22, 21 detecting a combustor internal pressure related value related to a combustor internal pressure as a pressure in a combustor 11 of a gas turbine, a network entropy derivation portion constructing a network by a horizontal visible graph method from time series data of the combustor internal pressure related value detected by the pressure related value detection means 22, 21, calculating network entropy from degree distribution of the network constructed on the basis of a discrete point sampled in a prescribed sampling period, and an abnormal state detection portion for detecting whether an abnormal state occurs in the gas turbine or not on the basis of the network entropy successively derived by the network entropy derivation portion.SELECTED DRAWING: Figure 1
Inventors:
SHIRAGAMI YOSUKE
MATSUMURA MASAHIKO
FUJITA SATOSHI
NISHIMURA KOICHI
KOGA SHONOSUKE
UCHIDA TAKASHI
GOTODA HIROSHI
FUNATSU KII
KOBAYASHI HIROAKI
MATSUMURA MASAHIKO
FUJITA SATOSHI
NISHIMURA KOICHI
KOGA SHONOSUKE
UCHIDA TAKASHI
GOTODA HIROSHI
FUNATSU KII
KOBAYASHI HIROAKI
Application Number:
JP2016222720A
Publication Date:
May 24, 2018
Filing Date:
November 15, 2016
Export Citation:
Assignee:
OSAKA GAS CO LTD
UNIV OF SCIENCE TOKYO
UNIV OF SCIENCE TOKYO
International Classes:
F02C7/00; F02C9/00
Attorney, Agent or Firm:
Patent business corporation r&c