START-STOP SCHEDULE CREATION DEVICE AND START-STOP SCHEDULE OPTIMIZATION SYSTEM

PROBLEM TO BE SOLVED: To optimize a start-stop schedule because an extra load is imposed on a plant apparatus operated by a start-stop schedule that is not optimized.SOLUTION: A start-stop schedule creation unit 2 adds a weight on the basis of requirement to the path of operation items of a pluralit...

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Main Authors TERAJIMA SHINTARO, SEKIAI TAKAO, HAYASHI YOSHIHARU, MURAKAMI MASAHIRO, KITAGAWA KATSUHIDE, SADAE KAZUKI
Format Patent
LanguageEnglish
Japanese
Published 05.01.2017
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Abstract PROBLEM TO BE SOLVED: To optimize a start-stop schedule because an extra load is imposed on a plant apparatus operated by a start-stop schedule that is not optimized.SOLUTION: A start-stop schedule creation unit 2 adds a weight on the basis of requirement to the path of operation items of a plurality of operated plant apparatuses and virtual operation items among the paths of plant apparatus operation items determined by logic and virtual operation items, and finds a critical path. Then, the creation unit calculates, for plant apparatus operation items and virtual operation items of a path different from the critical path, a timing at which to start and stop plant apparatus operation items and virtual operation items tracing back from the trailing end of the critical path, and creates a plant apparatus start-stop schedule in which the start-stop timing is optimized on the basis of requirement.SELECTED DRAWING: Figure 1 【課題】従来、最適化されていない起動停止スケジュールで操作されるプラント機器に余計な負荷がかかることがあったので、起動停止スケジュールを最適化する。【解決手段】起動停止スケジュール作成部2は、ロジックにより決定されるプラント機器の操作項目、及び仮想の操作項目の経路のうち、操作される複数のプラント機器の操作項目、及び仮想の操作項目の経路に対して、要求に基づいて重みを付けてクリティカルパスを求める。そして、クリティカルパスとは異なる経路のプラント機器の操作項目、及び仮想の操作項目について、クリティカルパスの終端から遡ってプラント機器の操作項目、及び仮想の操作項目を起動及び停止するためのタイミングを算出し、要求に基づいて起動停止タイミングを最適化したプラント機器の起動停止スケジュールを作成する。【選択図】図1
AbstractList PROBLEM TO BE SOLVED: To optimize a start-stop schedule because an extra load is imposed on a plant apparatus operated by a start-stop schedule that is not optimized.SOLUTION: A start-stop schedule creation unit 2 adds a weight on the basis of requirement to the path of operation items of a plurality of operated plant apparatuses and virtual operation items among the paths of plant apparatus operation items determined by logic and virtual operation items, and finds a critical path. Then, the creation unit calculates, for plant apparatus operation items and virtual operation items of a path different from the critical path, a timing at which to start and stop plant apparatus operation items and virtual operation items tracing back from the trailing end of the critical path, and creates a plant apparatus start-stop schedule in which the start-stop timing is optimized on the basis of requirement.SELECTED DRAWING: Figure 1 【課題】従来、最適化されていない起動停止スケジュールで操作されるプラント機器に余計な負荷がかかることがあったので、起動停止スケジュールを最適化する。【解決手段】起動停止スケジュール作成部2は、ロジックにより決定されるプラント機器の操作項目、及び仮想の操作項目の経路のうち、操作される複数のプラント機器の操作項目、及び仮想の操作項目の経路に対して、要求に基づいて重みを付けてクリティカルパスを求める。そして、クリティカルパスとは異なる経路のプラント機器の操作項目、及び仮想の操作項目について、クリティカルパスの終端から遡ってプラント機器の操作項目、及び仮想の操作項目を起動及び停止するためのタイミングを算出し、要求に基づいて起動停止タイミングを最適化したプラント機器の起動停止スケジュールを作成する。【選択図】図1
Author TERAJIMA SHINTARO
HAYASHI YOSHIHARU
SEKIAI TAKAO
MURAKAMI MASAHIRO
SADAE KAZUKI
KITAGAWA KATSUHIDE
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– fullname: SADAE KAZUKI
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Snippet PROBLEM TO BE SOLVED: To optimize a start-stop schedule because an extra load is imposed on a plant apparatus operated by a start-stop schedule that is not...
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SubjectTerms CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
Title START-STOP SCHEDULE CREATION DEVICE AND START-STOP SCHEDULE OPTIMIZATION SYSTEM
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