Abstract
The variability and uncontrollability of wind power increases the difficulty for a power system operator to implement a wind power system with a high penetration rate. These are more serious factors to consider in small and isolated power systems since the system has small operating reserves and inertia to secure frequency and voltage. Typically, this difficulty can be reduced by interconnection with another robust power system using a controllable transmission system such as a high-voltage direct current (HVDC) system. However, the reliability and stability constraints of a power system has to be performed according to the HVDC system implementation. In this paper, the method for calculation of maximum wind power penetration in an island supplied by a HVDC power system is presented, and the operational strategy of a HVDC system is proposed to secure the power system reliability and stability. The case study is performed for the Jeju Island power system in the Korean smart grid demonstration area.
Highlights
As a renewable energy source, wind power has many benefits from both the economic and environmental perspective [1,2]
The wind power integration rate in Texas reached 25% in 2014 [6]. This type of high wind power penetration rate is common in areas with robust interconnections with other large-scale power systems, e.g., Denmark and Texas
The analytical modeling of power system generation including line commutated converter (LCC)/voltage-source converter (VSC) high-voltage direct current (HVDC) and wind farms of an island system has been performed to study the proper amount of maximum wind power generation
Summary
As a renewable energy source, wind power has many benefits from both the economic and environmental perspective [1,2]. The implementation of the grid-scale energy storage system is considered to promote the wind power penetration [20]. To link systems such as wind farms to another system, there are two options from a broad point of view [21,22,23,24,25]: a HVAC system has advantages in transmission loss or competitive investment cost and compared to a HVDC system, it doesn’t require complicated control systems [21]. The analytical modeling of power system generation including LCC/VSC HVDC and wind farms of an island system has been performed to study the proper amount of maximum wind power generation.
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