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While microgrid distribution system technology is rapidly increasing, the importance of finding a way to evaluate the effect of adding renewable DGs on the overall grid reliability has become essential. Renewable energies resources are effective because they reduce environmental pollution and improve energy utilization efficiency and reliability, which makes them widely used in the network. In this...
Solar systems are highly penetrating into the electrical networks all over the world currently. Solar radiation is not steady and never will be, and so, a storage system is required to ensure a stable and continuous supply. To increase the reliability of the system whether islanded or network connected, it is better to have a storage system. After all, the decision of whether to use a storage system...
Owing to the Kyoto Protocol and the growing depletion of natural resources, renewable energies have attracted much attention. This paper considers 25-kW wind-turbine generator, 5-kW PV and 30-kW diesel generator as unit sizes for generation planning in a stand-alone power system. The investment cost (installation and unit costs) and fuel cost are minimized while retaining the reliability requirement...
Converter system plays an important role in power drive train of a wind turbine. In order to achieve higher reliability, the modular concept is popularly utilized in converter system design in modern wind turbines. A converter module can be a channel composed of AC/DC/AC or a module composed of AC/DC or DC/AC. AC/DC module can be used on either generator side or grid side which depends on system operation...
This paper presents an approach to evaluate the reliability of distribution network components (transformers and underground cables) by modifying the components failure rate based on its operating conditions. Expressions to determine failure rates of each component are established as functions of equipment loading, cable joints and cable length. It is shown that reliability curves of transformers...
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