MONITORING DEVICE, POWER SYSTEM, AND PROGRAM

• Main Authors: OHORI AKIHIRO, KITAMURA TAKATSUGU
• Format: Patent
• Language: English; Japanese
• Published: 29.09.2022
• 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; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

To provide a monitoring device that can satisfactorily control a self-sustained operation when a plurality of distributed power sources is operated in parallel.SOLUTION: A monitoring device 2 includes a receiving unit 21, a total value calculation unit 22, a distribution rate calculation unit 23A, a setting unit 24A, a first calculation unit 25, a second calculation unit 26, and a transmission unit 27. For each inverter device 1, the setting unit 24A calculates an active power target value from an active power total value calculated by the total value calculation unit 22 and a distribution rate calculated by the distribution rate calculation unit 23A, and calculates a reactive power target value from a reactive power total value calculated by the total value calculation unit 22 and the distribution rate calculated by the distribution rate calculation unit 23A. The first calculation unit 25 is supplied with the active power target value and an active power output value of each inverter device 1 and calculates a voltage phase command value of each inverter device 1. The second calculation unit 26 is supplied with the reactive power target value and a reactive power output value of each inverter device 1 and calculates a voltage amplitude command value of each inverter device 1.SELECTED DRAWING: Figure 2 【課題】複数の分散電源を並列運転させる場合において、自立運転の制御を良好に行うことができる監視装置を提供する。【解決手段】監視装置２は、受信部２１と合計値算出部２２と分配率算出部２３Ａと設定部２４Ａと第１算出部２５と第２算出部２６と送信部２７とを備える。設定部２４Ａは、各インバータ装置１に対して、合計値算出部２２によって算出される有効電力合計値と分配率算出部２３Ａによって算出される分配率とから有効電力目標値を算出し、合計値算出部２２によって無効電力合計値と分配率算出部２３Ａによって算出される分配率とから無効電力目標値を算出する。第１算出部２５は、各インバータ装置１の有効電力目標値および有効電力出力値が入力され、各インバータ装置１の電圧位相指令値を算出する。第２算出部２６は、各インバータ装置１の無効電力目標値および無効電力出力値が入力され、各インバータ装置１の電圧振幅指令値を算出する。【選択図】図２