System Stability Improvement of DG Connected to the Grid Based on Power Conversion and Energy Storage System

2011 ◽  
Vol 383-390 ◽  
pp. 2513-2517
Author(s):  
Hong Hai Kuang ◽  
Zheng Qiu Wu ◽  
Xiao Ning He
Keyword(s):  
Energy Storage ◽  
Distributed Generation ◽  
Simulation Analysis ◽  
Storage System ◽  
Power Conversion ◽  
Energy Storage System ◽  
System Stability ◽  
Time Simulation ◽  
Actual Operation

With people attaching importance to sustainable development and reducing environmental pollution, distributed generation technology is attracting more and more and more attention due to its unique environmental protection and economy. However, distributed generation will change with natural conditions so that it can not output power constantly and steadily, and most DGs are connected to the power system at distribution network side, this will cause system stability problem. In order to fully play the role of distributed power and avoid the adverse effects of its existence, a power conversion sand energy storage system to effectively regulate the system stability of distributed generation connected to the grid is presented. MATLAB/Simulink is used as a simulation and study tool in this paper, a system model of distributed generation connected to the grid is built and combined with actual operation in different environments to conduct real-time simulation analysis, the simulation results show that the power conversion system can enhance system stability of distributed generation connected to the grid.

Control Strategy of Wind Photovoltaic and Energy Storage System Stability Running

2013 ◽  
Vol 336-338 ◽  
pp. 547-550
Author(s):  
Ji Hong Zhang ◽  
Zhen Kui Wu ◽  
Hua Li ◽  
Han Shan Li
Keyword(s):  
Energy Storage ◽  
Distributed Generation ◽  
Control Strategy ◽  
Control Method ◽  
Storage System ◽  
Energy Storage System ◽  
System Stability ◽  
Mathematics Model ◽  
Generation Efficiency ◽  
Micro Grid

Micro grid may exert adequately distributed generation efficiency, and that wind Photovoltaic and Energy Storage is a key equipment in the micro grid. Aiming at the distributed generation existing intermittence and randomicity characteristic, the paper discussed the micro grid P/Q control method under the connection grid state and the micro grid U/F control method under the disconnection grid state. It also studied the distributed generation parameters variational law under the micro grid different run mode, and built the correlative mathematics model and tested by simulation. The results show: the control strategy ensured the mice grid running stably, and achieved the system anticipative design request, and offered theory foundation for the distributed generation extend application.

Analysis of Thermal Performance of Energy Storage System

2016 ◽  
Vol 824 ◽  
pp. 371-378
Author(s):  
Martina Jurigova ◽  
Maria Minarova ◽  
Ivan Chmúrny
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Storage System ◽  
Energy System ◽  
Energy Storage System ◽  
Advanced Technology ◽  
Winter Period ◽  
Concrete Tank ◽  
Effective Use

Thermal energy is necessary of many reasons. The most basic and most obvious includes food preparation and delivery of heat. Thermal energy storage is actually a temporary storage at high temperatures, respectively at low temperatures. It is an advanced technology, which can reduce environmental impact and it can facilitate more efficient and cleaner energy system. Nowadays, these systems have ability to retain thermal energy for a period of three months or more. The aim of design of these systems is to keep the thermal energy in summer period and to use it for heating in winter period. The role of such storage systems is to accumulate the heat, to balance temperature differences and to achieve the most effective use of the collected energy. This paper is focused on thermal analysis of system, which contains concrete tank. It is a system with water as a storage medium and the cooling of the water was monitored for 30 days.

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