@article{oai:kitami-it.repo.nii.ac.jp:00006605, author = {Yoichi, NAKAMURA and Susumu, YAMASHIRO}, issue = {2}, journal = {北見工業大学研究報告}, month = {Mar}, note = {application/pdf, The estimation method of the state probability of a thermal unit is described when the thermal unit starts up and shuts down. Since the state probability is affected by the past operation history, estimation equations are described separately depending on whether the thermal unit is before shutdown, during scheduled shutdown or after re-startup. Although failure is neglected practically in the period of transition before shutdown, failure is considered in the period of transition before re-start up. Considering daily operations, some simulations are concretely examined by a model system. An improvement in the power supply probability is checked by a proposed method previously reported}, pages = {181--186}, title = {Probabilistic Operation of Electric Power Systems Considering Environmental Constraint (Part 11)* -System Security of DSS Operation-}, volume = {18}, year = {1987} }