POWER SYSTEM RELIABILITY EVALUATION SYSTEM

• Main Authors: SHIMOO TAKAHIRO, YAGUCHI KOTA, KIMURA MISAO
• Format: Patent
• Language: English; Japanese
• Published: 21.02.2019
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

To appropriately evaluate the reliability of supply at occurrence of an expected accident in a power system including a renewable energy power source.SOLUTION: A reliability evaluation system 1 for occurrence of an expected accident in a power system including a renewable energy power source, includes: a system state estimation unit 112 that estimates a future system state on the basis of measurement information including at least any one of voltages, phases, loads, power generator outputs, and power flows at multiple points in a power system 21, renewable energy output prediction information including an output prediction value related to the renewable energy power source, a value greater than the prediction value by a predetermined amount, and a value less than the prediction value by a predetermined amount, demand prediction information of power in the power system, and operation plan information about power supply in the power system; and a reliability evaluation unit 113 that evaluates a supply reliability on the basis of the future system state estimated by the system state estimation unit, expected accident information including multiple expected accident forms, and the renewable energy output prediction information.SELECTED DRAWING: Figure 1 【課題】再生可能エネルギー電源を含む電力系統における想定事故発生時の供給信頼度を適切に評価する。【解決手段】再生可能エネルギー電源を含む電力系統における想定事故発生時の信頼度評価システム１は、電力系統２１内の複数箇所の電圧、位相、負荷、発電機出力、潮流の少なくともいずれかを含む計測情報と、再生可能エネルギー電源に関する出力の予測値、予測値よりも所定量大きい値、および、予測値よりも所定量小さい値を含む再生可能エネルギー出力予測情報と、電力系統内の電力の需要予測情報と、電力系統内の電力供給に関する運用計画情報と、に基づいて将来系統状態を推定する系統状態推定部１１２と、系統状態推定部によって推定された将来系統状態と、複数の想定事故様相を含む想定事故情報と、再生可能エネルギー出力予測情報と、に基づいて供給信頼度を評価する信頼度評価部１１３と、を備える。【選択図】図１