A Coordinated Control Strategy for LCC HVDC Systems for Frequency Support with Suppression of AC Voltage Fluctuations
2020 · IEEE Transactions on Power Systems
저자
이규섭 (Gyu‐Sub Lee), Do-Hoon Kwon, Seung‐Il Moon, Pyeong-Ik Hwang
연구주제
HVDC Systems and Fault Protection · Microgrid Control and Optimization
NTIS 과학기술표준분류
에너지/자원만에너지·환경·원자력 확장
배정 근거: AI 키워드가 잡은 NTIS 과제의 분류(정책 연계 맵과 같은 방법).
AI 연구 키워드·방법
드룹 제어 주파수 조정 고압직류송전(HVDC) 전류형 변환기(LCC)
state space modeling
키워드 (OpenAlex)
LCC-HVDC frequency support droop control state-space model communication failure robustness
초록
In this paper, a new control method for a line-commutated converter-based (LCC) high-voltage direct current (HVDC) system to support the frequency and AC voltage was proposed. For coordinated control of the inverter and rectifier, droop-based controllers are adopted for the outer loop of conventional controllers, and DC voltage is used to transfer the frequency information so that communication is not required. A method to determine the droop constants of the proposed controller is presented to emulate the conventional f/P droop characteristic and suppress the AC voltage fluctuations. Furthermore, a small-signal state-space model of the LCC HVDC system with the proposed scheme is derived, and root locus analysis is carried out to evaluate its stability. The effects of the proposed method are verified based on case studies, using the well-known CIGRE BENCHMARK model. The advantages of the…
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교수 1
연구주제 1
HVDC Systems and Fault Protection
정책분야 1
키워드 4
주파수 조정 · 고압직류송전(HVDC) · 드룹 제어 · 전류형 변환기(LCC)