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As the wind power penetration is increasing rapidly into the power grid, modern gird codes require the wind turbines (WTs) to possess the low voltage ride-through (LVRT) capability. In order to evaluate the performance of a WT under grid fault conditions, a voltage sag generator (VSG) is needed to simulate all kinds of grid faults. This paper investigates a three-phase programmable VSG based on a...
According to recent target of the Japanese government, more than 50 GW photovoltaic (PV) power generation will be penetrated in the utility system until 2030. Current measures adopted to DG to keep power quality and safety of the grid may not be adapted any more in the large penetration. In advance of the declaration of the target, CRIEPI proposed the Autonomous Demand Area Power System (ADAPS) as...
This paper propose a method to evaluate the dip and interruption costs in the distribution system with distributed generation units (DGs). The game theory is used to allocate the additional cost caused by operating DGs. To evaluate the impacts of DGs on dip and interruption costs, which could be positive impact or negative impact, the operating hours of DGs, the frequencies of the power quality events...
In the last years, the wind power generation incorporated into the standard grid has been increased significantly. This situation forced the revision of the electric utilities grid codes requirements, to guarantee the reliability in systems with high wind energy penetration. Particularly in transient conditions, the wind farms must withstand several types of disturbances coming from the grid, such...
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