Assessing temporal complementarity of solar, wind and hydrokinetic energy

Abstract

Abstract. Renewable energy sources (RES) exhibit various characteristics when it comes to their availability in time and space domain. Some are characterised by significant variability and limited predictability. This makes their integration to the power grid a complicated task. Temporal and spatial complementarity of RES is perceived as one of the possible ways to facilitate the process of integration. This paper investigates the concept of temporal complementarity of solar wind and hydrokinetic energy in case of two sites in Poland. Obtained results indicate existence of some beneficial complementarity on inter-annual and annual time scale. Combination of those three RES in one hybrid system makes power source more reliable.

Temporal and spatial complementarity of wind and solar resources in Lower Silesia (Poland)

“…In general when high power output was observed in case of wind generation than the power generated was significantly smaller and vice versa. Another research paper [24] analysed the temporal complementarity of wind, solar and hydrokinetic energy source in two locations (Lębork and LądekZdrój). The observed there values of solar and wind complementarity were not very spectacular however it is important to note that this analysis was conducted form a wind speed measured at 10 meters above sea level which is rather typical for residential not commercial scale wind turbines.…”

“…The observed there values of solar and wind complementarity were not very spectacular however it is important to note that this analysis was conducted form a wind speed measured at 10 meters above sea level which is rather typical for residential not commercial scale wind turbines. The results presented in [22,24] has been expanded for additional locations in Poland and authors developed a mathematical model which aims at selecting the optimal distribution of wind and solar parks in Poland (considering the spatio-temporal complementarity) aiming at minimizing the variability of their combined energy yield. Presented in the next sections analysis are a follow up of the results presented in [21][22][23][24][25] and investigate the spatial and temporal complementarity of wind and solar resources in Lower Silesia.…”

Concept of large scale PV-WT-PSH energy sources coupled with the national power system

“…But still even if energy storage will be added it is important to use both energy generating technologies because of their beneficial temporal complementarity which especially exhibits itself on an annual time scale [9,10]. The impact of using two or more complementary energy sources usually decreases the need for energy storage and makes the energy source more reliable.…”

Economic and environmental analysis of a hybrid solar, wind and pumped storage hydroelectric energy source: a Polish perspective

“…But one would have to overcome the same problems which we face nowadays with the integration of RES, namely, their variable and non-dispatchable nature. As has already been mentioned, several approaches [8][9][10][11][12][13][14][15][16][17][18][19][20] can be applied, but the concept which incorporates at least three of them is a hybrid of photovoltaic (solar power), wind turbine and pumped storage hydroelectricity (PV-WT-PSH).Coupled wind and solar power sources tend to exhibit lower variability and it is well known that on an annual time scale they exhibit a strong complementarity [11,12,[21][22][23][24]. The concept of the temporal complementarity of a dual energy source can be explained by means of two sine functions which depict their variation in energy output; in the case of perfect temporal complementarity they will be out of phase with each other by π/2, or in other words they have a very strong (˗1) negative correlation.…”

“…Coupled wind and solar power sources tend to exhibit lower variability and it is well known that on an annual time scale they exhibit a strong complementarity [11,12,[21][22][23][24]. The concept of the temporal complementarity of a dual energy source can be explained by means of two sine functions which depict their variation in energy output; in the case of perfect temporal complementarity they will be out of phase with each other by π/2, or in other words they have a very strong (˗1) negative correlation.…”