ROBUST LOAD FREQUENCY CONTROL APPROACH FOR SMART POWER SYSTEMS CONCERNING ELECTRIC VEHICLES AND HEAT PUMP WATER HEATERS | ||||
| JES. Journal of Engineering Sciences | ||||
| Article 3, Volume 43, No 1, January and February 2015, Page 33-44 PDF (601.54 K) | ||||
| Document Type: Research Paper | ||||
| DOI: 10.21608/jesaun.2015.115145 | ||||
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| Authors | ||||
| Yasunori Mitani1; Tarek Hassan Mohamed2 | ||||
| 1Dept. of Electrical and Electronic Eng., Kyushu Institute of Technology, Kitakyushu, Japan | ||||
| 2Faculty of Energy Engineering, Aswan University, Aswan, Egypt | ||||
| Abstract | ||||
| In recent years, photovoltaic has generation become the most popular renewable energy based generations. However, this power generation cannot supply constant electric power output and sometimes cause the imbalance between supply and demand. To alleviate the mentioned problem, a number of Heat Pump Water Heaters (HPWH) and Electric Vehicles (EV) are used as new control equipment for Load Frequency Control (LFC) in order to suppress the frequency fluctuation caused by such a large amount of renewable energy sources. However, Due to the system uncertainties such as system parameters variation, the conventional controllers which are designed without taking system uncertainties into account in the controller design may lose the control effect and fail to damp the frequency deviation. This will affect the quality of supply and may deteriorate the system stability. This paper proposes, A New load frequency control (LFC) using the coefficient diagram method (CDM) technique in the presence of variable solar power & thermal power have been presented. The CDM technique has been designed such that the effect of the uncertainty due to governor and turbine parameters variation and variable solar power & load disturbance is reduced. Digital simulations for a power system are provided to validate the effectiveness of the proposed scheme. A performance comparison between the proposed and a conventional integral control scheme is carried out confirming the superiority of the proposed CDM technique in smart power system | ||||
| Keywords | ||||
| load frequency control; coefficient Diagram method; variable solar power, thermal power, Heat Pump Water Heaters (HPWHs) and Electric Vehicles (EV) and variable load | ||||
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