ABSTRACT:
To incorporate the
abundance of renewable energy into the power system, it is required to
reconfigure the energy system. An intelligent power grid such as the smart grid
is the solution for future energy demand. Among several renewable sources, the
wind energy conversion system (WECS) is the rapidly growing source of energy,
which is considered as the backbone of renewable energy and the smart grid.
This paper deals with control strategies of distributed wind farms that are
connected to smart houses for a smart grid application. A grid-side energy storage
system is considered to deliver smooth power to the system. Stable control
strategies under the line fault condition are also discussed in this paper. The
surplus power of the smart houses is sent back to the power grid, and a house
owner can benefit by selling the extra power to the power company. The detailed
modeling and control strategies of an intelligent power system are demonstrated
in this paper. The effectiveness of the proposedsystem is verified by the
extensive numerical simulation results.
KEYWORDS:
1. Doubly fed
induction generator
2. Electric double layer capacitor
(EDL)
3. Fault condition
4.Power smoothing
smart grid
5.Smart house
6.
Wind farm.
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
EXPECTED SIMULATION RESULTS:
Fig. 2. Simulation results under the normal condition. (a) Wind speed.
(b) Rotational speed of the wind turbine. (c) Wind farm output powers. (d)
Different powers of the system. (e) Output power of the EDLC. (f) DC-link
voltage of the EDLC. (g) Power of house group-1. (h) Power of house group-2.
(i) Power of transformer-1. (j) Power of transformer-2.
Fig. 3.
Simulation results under the fault condition. (a) Wind speed. (b) Rotor speed.
(c) Output power of the wind farm. (d) DC-link voltage of the wind turbine. (e)
DC-link voltage of the EDLC. (f) Terminal voltage of the EDLC. (g) Line power
of the system.
CONCLUSION:
A
wind-farm-based smart grid system coordinated with smart houses has been
proposed. Wind velocity is a fluctuating resource, and the generated power of
the wind turbine is cubic proportional to the wind speed. Therefore, the output
power of the wind turbine is fluctuated. In this paper, an EDLC energy storage
is applied to generate a smooth line power for the smart grid system. The line
power can be smoothed by the EDLC system extensively. In addition, a stable
operation can be performed at the fault condition through the chopper circuit approaches.
From the simulation results, the effectiveness of the proposed method is
verified.
REFERENCES:
[1] P. Yi, A.
Iwayemi, and C. Zhou, “Developing ZigBee deployment guideline under WiFi
interference for smart grid applications,” IEEE Trans. Smart Grid,
vol. 2, no. 1, pp. 110–120, Mar. 2011.
[2] A. Ipakchi
and F. Albuyeh, “Grid of the future,” IEEE Power Energy Mag., vol. 7,
no. 2, pp. 52–62, Mar./Apr. 2009.
[3] G. Mandic,
A. Nasiri, E. Muljadi, and F. Oyague, “Active torque control for gearbox load
reduction in a variable-speed wind turbine,” IEEE Trans. Ind. Appl.,
vol. 48, no. 6, pp. 2424–2432, Nov./Dec. 2012.
[4] H. Jagau, M.
A. Khan, and P. S. Barendse, “Design of a sustainable wind generator system
using redundant materials,” IEEE Trans. Ind. Appl., vol. 48, no. 6, pp.
1827–1837, Nov./Dec. 2012.
[5] A.M.
Howlader et al., “A minimal order observer based frequency control
strategy for an integrated wind–battery–diesel power system,” Energy,vol.
46, no. 1, pp. 168–178, Oct. 2012.
