Coordinated Operation of Wind Farm, Pumped-Storage Power Stations, and Combined Heat and Power Considering Uncertainties

Due to the intermittent and fluctuating nature of wind and other renewable energy sources, their integration into electricity systems requires large-scale and flexible storage systems to ensure uninterrupted power supply and to reduce the percentage of produced energy that is discarded or curtailed. Storage of large quantities of electricity in the form of dynamic energy of water masses by means of coupled reservoirs has been globally recognized as a mature, competitive and reliable technology; it is particularly useful in countries with mountainous terrain, such as Greece. Its application may increase the total energy output (and profit) of coupled wind-hydroelectric systems, without affecting the availability of water resources. Optimization of such renewable energy systems is a very complex, multi-dimensional, non-linear, multi modal, nonconvex and dynamic problem, as the reservoirs, besides hydroelectric power generation, serve many other objectives such as water supply, irrigation and flood mitigation. Moreover, their function should observe constraints such as environmental flow. In this paper we developed a combined simulation and optimization model to maximize the total benefits by integrating wind energy production into a pumped-storage multi-reservoir system, operating either in closed-loop or in open-loop mode. In this process, we have used genetic algorithms as the optimization tool. Our results show that when the operation of the reservoir system is coordinated with the wind farm, the hydroelectricity generation decreases drastically, but the total economical revenue of the system increases by 7.02% when operating in closed-loop and by 7.16% when operating in open-loop mode. We conclude that the hydro-wind coordination can achieve high wind energy penetration to the electricity grid, resulting in increase of the total benefits of the system. Moreover, the open-loop pumped-storage multi-reservoir system seems to have better performance, ability and flexibility to absorb the wind energy decreasing to a lesser extent the hydroelectricity generation, than the closed-loop.

Download Full-text

Development and present situation of hydropower in China

Water Policy ◽

10.2166/wp.2019.206 ◽

2019 ◽

Vol 21 (3) ◽

pp. 565-581 ◽

Cited By ~ 6

Author(s):

Xingsong Sun ◽

Xiaogang Wang ◽

Lipeng Liu ◽

Ruizhi Fu

Keyword(s):

Development Strategy ◽

Energy Development ◽

Small Hydropower ◽

Important Place ◽

The Sustainable Development ◽

The Past ◽

Power Stations ◽

Pumped Storage ◽

Under Construction ◽

Installed Capacity

Abstract As a clean and renewable energy, hydropower holds an important place in energy development for every country. China has the richest hydropower resources with 541 GW technical exportable installed capacity, a 17% global share. Hydropower is a key point of energy conservation and comprehensive utilization of resources to ensure the sustainable development strategy of China. This paper investigates the hydropower development of China and provides a summary of the current situation of the development. Over the past 100 years, China's hydropower developed tremendously. The total installed capacity of hydropower is 341.19 GW by the end of 2017 and the installed capacity of small hydropower is 79.27 GW. By the end of June 2018, 33 pumped-storage power stations had been constructed and 32 are under construction. The total installed capacity of pumped-storage power is 72.64 GW. More development will be achieved in the next decades according to China's development strategy.

Download Full-text

Discussion on joint operation of wind farm and pumped-storage hydroplant

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/100/1/012075 ◽

2017 ◽

Vol 100 ◽

pp. 012075

Author(s):

Caifang Li ◽

Yichun Wu ◽

Hao Liang ◽

Miao Li

Keyword(s):

Wind Farm ◽

Joint Operation ◽

Pumped Storage

Download Full-text

Electric and hydraulic process connection in hydraulic and pumped storage hydroelectric power stations

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society ◽

10.1109/iecon.2013.6699444 ◽

2013 ◽

Cited By ~ 4

Author(s):

M. V. Pronin ◽

A. G. Vorontsov ◽

G. A. Gogolev ◽

M. E. Kuzin

Keyword(s):

Hydroelectric Power ◽

Power Stations ◽

Pumped Storage ◽

Hydraulic Process

Download Full-text

Study of the Different Transmission Line Faults for a Grid Connected Wind Farm with Different Types of Control Method for RSC

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v5.i2.pp338-344 ◽

2017 ◽

Vol 5 (2) ◽

pp. 338

Author(s):

Reza Najafi

Keyword(s):

Wind Farm ◽

Control Method ◽

Wind Energy Conversion ◽

Remote Areas ◽

Power Stations ◽

Simulink Simulation ◽

Different Types ◽

Energy Conversion System ◽

Rotor Side Converter ◽

Proper Operation

Wind power stations, many located in remote areas; so they are characterized by weak grids and are often submitted to power system disturbance like faults. In this paper, the behaviour of a wind energy conversion system that uses the control of the rotor side converter (RSC) by three different methods under faulty conditions is presented. The behaviour of these systems during a grid failure is an important issue. DFIG is analysed and simulated under differing faulty conditions in the environment of MATLAB/SIMULINK. Simulation results show that the proposed method has proper operation during fault conditions.

Download Full-text