Statistical Impact Evaluation of Stochastic Parameters Enhancing Solar Power Inherent Smoothing
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Details
| Original language | English |
|---|---|
| Title of host publication | 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe) |
| Publisher | IEEE |
| Number of pages | 6 |
| ISBN (Electronic) | 978-1-5386-4505-5 |
| ISBN (Print) | 978-1-5386-4506-2 |
| DOIs | |
| Publication status | Published - Oct 2018 |
| Publication type | A4 Article in a conference publication |
| Event | IEEE PES Innovative Smart Grid Technologies Conference Europe - Duration: 1 Jan 1900 → … |
Conference
| Conference | IEEE PES Innovative Smart Grid Technologies Conference Europe |
|---|---|
| Period | 1/01/00 → … |
Abstract
The characteristic variability of solar power brings potential threats to power system frequency stability by introducing short-term power fluctuations. A nationwide virtual PV (photovoltaic) system of 14 locations in Finland with interplant distances between 10 km to 1065 km has been analyzed at 1 Hz resolution by introducing stochastic variables i.e. power fluctuation, maximum power fluctuation and smoothing potential factor. The paper presents a multifold smoothing analysis based on geographical dispersion, ensemble size, temporal resolutions and interplant distances of PV plants. Empirical expressions are proposed using regression analysis, which represents a decay of smoothing potential factor for a decreasing time resolution. Aggregated strength of maximum power fluctuation of$N$number of PV plants decreases by a converging factor 1/-N and an ensemble of 14 PV plants follows the strict ramp rate limits for 97.5% of the total production time. Spatial correlation w.r.t interplant distances is also focused.
Keywords
- Fluctuations, Smoothing methods, Power smoothing, Uncertainty, Frequency control, Time-frequency analysis, Power system stability, Maximum power fluctuation, PV generation, Solar irradiance uncertainty, Ramp rate