POWER CALCULATION METHOD, DIAGNOSTIC METHOD, POWER CALCULATION SYSTEM, AND PROGRAM

• Main Author: SAITO KIMIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 04.10.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES

PROBLEM TO BE SOLVED: To provide a power calculation method, a diagnostic method, a power calculation system, and a program that can eliminate the need to measure the amount of solar radiation of each of a plurality of photovoltaic power generation systems and can prevent the possibility of a reduction in diagnostic accuracy.SOLUTION: A power calculation method includes a first measurement step, a second measurement step, a first calculation step, a second calculation step, and a third calculation step. In the first measurement step, generated power of a first photovoltaic power generation system 10 is measured. In the second measurement step, current-voltage characteristics of a diagnosis module 41 are measured. In the first calculation step, first expected generated power is calculated from the maximum generated power obtained from the current-voltage characteristics. In the second calculation step, a solar radiation intensity of a second photovoltaic power generation system 20 is calculated from the current-voltage characteristics. In the third calculation step, second expected generated power is calculated from the solar radiation intensity and a panel temperature of the second photovoltaic power generation system 20.SELECTED DRAWING: Figure 1 【課題】複数の太陽光発電システムについて各々の日射量の計測を行うことなく、かつ診断精度が低下する可能性を防ぐことができる電力算出方法、診断方法、電力算出システム及びプログラムを提供する。【解決手段】電力算出方法は、第１計測ステップ、第２計測ステップ、第１演算ステップ、第２演算ステップ及び第３演算ステップを含む。第１計測ステップは、第１太陽光発電システム１０の発電電力を計測する。第２計測ステップは、診断用モジュール４１の電流電圧特性を計測する。第１演算ステップは、電流電圧特性から求めた最大発電電力から第１期待発電電力を算出する。第２演算ステップは、第２太陽光発電システム２０の日射強度を、電流電圧特性から算出する。第３演算ステップは、日射強度と第２太陽光発電システム２０のパネル温度とから、第２期待発電電力を算出する。【選択図】図１