WATER ELECTROLYSIS SYSTEM THAT MANAGES POWER SUPPLY OF RENEWABLE ENERGY

• Main Authors: WATANABE KEIJI, FURUTA FUTOSHI, ISHIKAWA TAKAO
• Format: Patent
• Language: English; Japanese
• Published: 06.12.2023
• Subjects: APPARATUS THEREFOR; CHEMISTRY; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; GENERATION; METALLURGY; SYSTEMS FOR STORING ELECTRIC ENERGY

To improve utilization efficiency of a water electrolysis device in a water electrolysis system that manages power supply with renewable energy.SOLUTION: A water electrolysis system manages power supply with renewable energy to a system and an electrolytic tank of a water electrolysis device. The water electrolysis system acquires renewable energy power and operation information for a renewable energy device from a power conversion device connected to the renewable energy device, calculates an estimated value of the renewable energy power on the basis of the renewable energy power and the operation information, calculates an estimated value of residual power at a predetermined timing on the basis of the estimated value of the renewable energy power and sold power, calculates an electrolyte power command value by performing a conversion process based an allowable lamp rate of the electrolysis tank on the estimated value of the residual power before the predetermined timing and the estimated value of the residual power at the predetermined timing, and inputs the electrolyte power command value to the power conversion device of the electrolytic tank.SELECTED DRAWING: Figure 2 【課題】再生可能エネルギーの電力供給を管理する水電解システムにおいて、水電解装置の利用効率を改善する。【解決手段】水電解システムは、系統と、水電解装置の電解槽とに対する、再生可能エネルギーの電力供給を管理する。水電解システムは、再生可能エネルギーデバイスに接続される電力変換装置から、再生可能エネルギー電力および前記再生可能エネルギーデバイスの稼働情報を取得し、前記再生可能エネルギー電力および前記稼働情報に基づいて、前記再生可能エネルギー電力の推定値を算出し、前記再生可能エネルギー電力の前記推定値および売電電力に基づき、所定のタイミングの余剰電力の推定値を算出し、前記所定のタイミングより前の前記余剰電力の前記推定値と、前記所定のタイミングの前記余剰電力の前記推定値とに対して、前記電解槽の許容ランプ率に基づく変換処理を行うことにより、電解電力指令値を算出し、前記電解電力指令値を、前記電解槽の電力変換装置に入力する。【選択図】図２