Evaluation of inertia resource for securing nadir frequency in HVDC interconnected system with high penetration of RES

Jung, Jaeyeop; Park, Jeong‐Hoo; Lee, Hwanik; Lee, Byongjun

doi:10.1016/j.egyr.2023.05.192

Cited by 4 publications

(2 citation statements)

References 17 publications

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Section: Introductionmentioning

confidence: 99%

“…Many studies have been conducted to increase the penetration level of RE in the Jeju power system [22][23][24][25][26]. In [22,23], a method of increasing RE penetration by reducing the number of must-run generators by applying a synchronous condenser with a flywheel and battery energy storage system has been proposed. In [24], a stability analysis according to the type of HVDC applied to the MIDC systems and a plan to increase the penetration limit of RE accordingly were presented.…”

Section: Introductionmentioning

confidence: 99%

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The Operation Strategy of the MIDC Systems for Optimizing Renewable Energy Integration of Jeju Power System

Son,

Jang

2023

Energies

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The power system on Jeju Island currently faces challenges due to an imbalance between power supply and demand owing to increasing renewable energy (RE) generation. Consequently, the multi-infeed high-voltage direct-current (MIDC) systems are expected to play an important role in reducing RE curtailment and increasing RE penetration. However, despite the balance between power supply and demand, transmission line (TL) overloads on Jeju Island, which has a low permissible rating, may lead to RE curtailment. We propose an operational strategy for the MIDC systems to mitigate TL overloading and RE curtailment. This strategy was aimed at managing the possible congestion of TLs, maintaining a power supply–demand balance, and increasing the penetration level of RE. In this paper, we present a scheme for calculating the operating points of the MIDC systems and allocating RE curtailment using optimization with security constraints to mitigate TL overloading. The proposed optimization model simplifies solving the mathematical equations involved by employing a sensitivity factor called the power transfer distribution factor (PTDF), using which linear programming (LP) optimization can be performed. To verify the feasibility of the operational strategy, case studies are conducted using an actual Jeju Island power system with a power system analysis tool—Power System Simulator for Engineering (PSS/E). The optimization problem was solved using MATLAB.

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