Optimized Energy Storage For Power System Frequency Control with Wind Power Penetration

2018 ◽  
Author(s):  
Jignesh Patel ◽  
S. K. Joshi
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Wind Power ◽  
Frequency Control ◽  
System Frequency

Robust Frequency Control of Wind-Diesel Hybrid Power System Using Superconducting Magnetic Energy Storage

2009 ◽  
Vol 10 (2) ◽  
Author(s):  
Issarachai Ngamroo
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Wind Power ◽  
Magnetic Energy ◽  
Frequency Control ◽  
Hybrid Power System ◽  
Superconducting Magnetic Energy Storage ◽  
Hybrid Power ◽  
Magnetic Energy Storage ◽  
System Frequency

In an isolated wind-diesel hybrid power system, the variable power consumptions as well as the intermittent wind power may cause a large fluctuation of system frequency. If the system frequency can not be controlled and kept in the acceptable range, the system may lose stability. To reduce system frequency fluctuation, a superconducting magnetic energy storage (SMES) which is able to supply and absorb active power quickly, can be applied. In addition, variation of system parameters, unpredictable power demands and fluctuating wind power etc., cause various uncertainties in the system. A SMES controller which is designed without considering such uncertainties may lose control effect. To enhance the robustness of SMES controller, this paper focuses on a new robust control design of SMES for frequency control in a wind-diesel system. The coprime factorization is used to represent the unstructured uncertainties in a system modeling. The structure of a SMES controller is the practical first-order lead-lag compensator. To tune the controller parameters, the optimization problem is formulated based on loop shaping technique. The genetic algorithm is applied to solve the problem and achieve the control parameters. Simulation results confirm the high robustness of the proposed SMES controller with small power capacity against various disturbances and system uncertainties in comparison with SMES in the previous research.

"Simulation of an Isolated Wind Power System with Battery Energy Storage and Dump Load"

2018 ◽  
Author(s):  
Rafael Sebastián ◽  
Jerónimo Quesada
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Wind Power ◽  
Dynamic Models ◽  
Active Power ◽  
Frequency Regulation ◽  
Battery Energy Storage ◽  
Wind Power System ◽  
Battery Energy ◽  
System Frequency

"This study presents the modelling and dynamic simulation of an Isolated Wind Power System (IWPS) consisting of a Wind Turbine Generator (WTG), a synchronous machine (SM), consumer load, dump load (DL) and a Battery Energy Storage System (BESS). First the IWPS architecture and the dynamic models of the IWPS components are described. Second, the control requirements for frequency regulation of the IWPS are studied and a PID regulator to govern the active power stored+dumped by the BESS+DL combination or supplied by the BESS along with a power sharing algorithm between the BESS and DL is presented. Finally the IWPS is simulated facing to variations to load and WTG power. The simulation results are given showing graphs of the main electrical variables in the IWPS: system frequency and voltage and active power in each component. The results show how the BESS or BESS+DL combination regulates correctly the isolated system frequency. The results also show that the BESS improves the IWPS reliability when compared with the frequency control obtained using only the DL."

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