基本信息:
- 专利标题： POWER GRID MONITORING SYSTEM AND POWER GRID MONITORING METHOD
- 申请号：EP22864141.1 申请日：2022-08-01
- 公开(公告)号：EP4401263A1 公开(公告)日：2024-07-17
- 发明人： PANDEY, Ravikant , KATO, Daichi , YOSHIHARA, Tohru , OHARA, Shinya , KOKAI, Yutaka
- 申请人： Hitachi, Ltd.
- 申请人地址： JP Tokyo 100-8280 6-6, Marunouchi 1-chome, Chiyoda-ku,
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JP Tokyo 100-8280 6-6, Marunouchi 1-chome, Chiyoda-ku,
- 代理机构： Mewburn Ellis LLP
- 优先权： JP 21145034 2021.09.06
- 国际申请： JP2022029514 2022.08.01
- 国际公布： WO2023032554 2023.03.09
- 主分类号： H02J3/24
- IPC分类号： H02J3/24 ; H02J3/38 ; H02J13/00
摘要：
A power grid monitoring system includes a storage unit that stores power control system (PCS) impedance data indicative of a PCS impedance that is an impedance of a PCS-based energy source at a plurality of operation points, the PCS-based energy source being connected to an electric power system, the PCS-based energy source including a voltage source and a PCS that regulates power generated by the voltage source and supplies the power to the electric power system, a real time calculation unit that calculates a power grid impedance based on a power flow measured at a point of connection where the PCS-based energy source and the electric power system are connected to each other, the power grid impedance being an impedance of the electric power system, and a stability check unit that performs a stability check to detect low frequency oscillation (LFO) at the point of connection based on the PCS impedance data and the power grid impedance.
IPC结构图谱:
| H | 电学 |
| --H02 | 发电、变电或配电 |
| ----H02J | 供电或配电的电路装置或系统；电能存储系统 |
| ------H02J3/00 | 交流干线或交流配电网络的电路装置 |
| --------H02J3/24 | .在网络中防止或减少功率振荡的装置 |