| 发明名称 |
METHOD AND DEVICE FOR ESTIMATING GRID PROPERTIES OF A POWER GRID |
| 摘要 |
A method for estimating grid properties of a power grid coupled to a generator at a point of common coupling is provided. First, a voltage VPCC at the point of common coupling is measured. Second, a current IPCC at the point of common coupling is measured. Third, the grid properties are estimated by a grid model using as input parameters the measured voltage VPCC at the point of common coupling, the measured current IPCC at the point of common coupling and the determined phase angle. Advantageously, the absolute phases of the voltage and the current at the point of common coupling are not necessary, which makes the present method less prone to errors due to measurement noise. Further, a device and a computer program product are provided. |
| 申请公布号 |
US2015025860(A1) |
申请公布日期 |
2015.01.22 |
| 申请号 |
US201414318598 |
申请日期 |
2014.06.28 |
| 申请人 |
Siemens Aktiengesellschaft |
发明人 |
Andresen Bjorn;Egedal Per;Obradovic Dragan;Scheiterer Ruxandra;Szabo Andrei |
| 分类号 |
G06F17/50 |
主分类号 |
G06F17/50 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for estimating grid properties (ZG, VG) of a power grid coupled to a generator at a point of common coupling (PCC), the method comprising:
measuring a voltage (VPCC) at the point of common coupling (PCC), measuring a current (IPCC) at the point of common coupling (PCC), determining a phase angle (α) between the measured voltage (VPCC) at the point of common coupling (PCC) and the measured current (IPCC) at the point of common coupling (PCC), and estimating the grid properties (ZG, VG) by a grid model using as input parameters the measured voltage (VPCC) at the point of common coupling (PCC), the measured current (IPCC) at the point of common coupling (PCC) and the determined phase angle α. |
| 地址 |
Munich DE |
