ارزیابی ظرفیت سیستم های تولید برق خورشیدی و بادی

ارزیابی ظرفیت سیستم های تولید برق خورشیدی و بادی

ارزیابی ظرفیت سیستم های تولید برق خورشیدی و بادی

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ارزیابی ظرفیت سیستم های تولید برق خورشیدی و بادی

Dependable Capacity Evaluation of Wind Power and Solar Power Generation Systems

Abstract

Integration of renewable energy sources, such as wind power and solar power, into the generation system can enhance country’s energy security. These alternative energy help diversify
sources of primary energy used to produce electricity. However, the biggest disadvantage of using these types of renewable energy power plants is that it might reduce power system reliability because these intermittent renewable energy sources have low dependable capacity. This paper aims to evaluate the dependable capacity of wind power and solar power generation systems.

It considers uncertainties due to intermittent wind speed, solar irradiance, ambient temperature, and unavailability of their corresponding generators. Additionally, load uncertainty is also taken into account. The dependable capacity of the wind power and solar power generation systems are determined from the principle of generation system reliability evaluation. The
reliability index such as Loss of Load Probability (LOLP) will be used as a key indicator to define the dependable capacit

Keywords

Renewable energy, dependable capacity uncertainty, unavailability, reliability indices

I. INTRODUCTION

Due to global warming problem and the deficiency of fossil fuels recently, especially oil and natural gas, renewable energy plays a key role as alternatives of these fuels. They help diversify sources of primary energy. However, some types of the renewable energy are intermittent and sometimes lead a degradation of system reliability. For example, solar   power generation can generate electricity only in daytime wind power generation can generate electricity only  if wind speed exceeds the cut-in value.

Because of the intermittent nature of the renewable energy sources, they are considered to have low dependable capacity. In Thailand, the dependable capacity is generally defined as a proportion or percentage of output power of a generator with respect to its installed capacity that this generator can supply
to the system when needed. Currently, there is neither standard nor reasonable methodology to evaluate this value, especially for the renewable energy power plant.