Study of a grid-connected hybrid wind/micro-hydro power system associated with a supercapacitor energy storage device

2010 ◽  
Author(s):  
Stefan Breban ◽  
Benoit Robyns ◽  
Mircea M. Radulescu
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Storage Device ◽  
Energy Storage Device ◽  
Hydro Power ◽  
Supercapacitor Energy Storage

scholarly journals Research on Cooperative Optimization Control Strategy of Multitype Energy Sources

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Renliang Liu ◽  
Yong Chen ◽  
Zhe Tan ◽  
Chao Liu ◽  
Kun Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Heat Pump ◽  
Demand Response ◽  
Storage Device ◽  
Energy Storage Device ◽  
Ground Source Heat Pump ◽  
Storage Model ◽  
Ground Source ◽  
Optimization Control

With the increasing consumption of energy, the efficiency of energy utilization urgently needs to be further improved. At present, the coordinated optimization control of the integrated energy system of multiple types of cooling, heating, and power equipment is an important way to improve the comprehensive energy efficiency of the regional power grid and reduce the operating cost of the power grid. Aiming at this scenario, this paper establishes a fine energy storage model by analyzing the uncertainty of wind power output and considering the influence of low temperature and other conditions on the energy storage device in the energy storage side. On the load side, the influence of comprehensive demand response of electricity and heat on system operation is analyzed, and a combined cold, heat, and electricity supply system including renewable energy and energy storage device is established. Aiming at the optimal total cost of the integrated energy cooling and heating triple power system collaborative optimization control, the crow search algorithm is used to iteratively optimize the configuration model of the triple power system. The four models are considered in the article include groundless heat pump and energy storage, excluding joint demand response, including ground source heat pump and traditional energy storage model, excluding joint demand response, including ground source heat pump and fine energy storage model, excluding joint demand response, including ground source heat pump and fine energy storage model, taking into account the joint demand response. The simulation results show that the cooperative optimization control strategy of the combined cooling, heating, and power system with renewable energy and fine energy storage device model can enhance the system’s schedulable space, improve the comprehensive energy utilization efficiency, and have considerable economic benefits.

Performance of the Elevator Inverter with the Super Capacitor Energy Storage

2012 ◽  
Vol 220-223 ◽  
pp. 478-481
Author(s):  
Xiao Jie Zhou ◽  
Yi Ruan
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Distribution System ◽  
Regenerative Braking ◽  
Storage Device ◽  
Electricity Distribution ◽  
Energy Storage Device ◽  
Super Capacitor ◽  
Energy Feedback ◽  
Bus Voltage

The paper presents a super capacitor energy storage device to recycle the power with regenerative braking which the elevator inverter generates. During the running of the elevator, the fluctuation of DC bus voltage is greater, this will impact on grid greatly, especially on energy feedback. It will disturb user electricity distribution system and endanger the operation of power system. Through switching control of the Bi-directional DC/DC converter, the converter can control charge and discharge of the super capacitor. When the elevator inverter generates a power with regenerative braking, the power energy is charged to the super capacitor. it discharges the energy power when the elevator is accelerated or load is added to the elevator. Experimental results carried out on a 10-kW elevator inverter are presented.

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