인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
This study evaluates the accuracy of model parameter derivation using a phasor measurement unit (PMU)-based permanently installed measurement system by comparing its results with those obtained from conventional test equipment at Muju Pumped-Storage Unit 1 (343 MVA). Seven characterization tests were conducted simultaneously using both systems, and a standard eight-step parameter estimation algorithm was applied independently to each dataset. Raw measurements exhibited minor differences (base field current 0.023%, saturation coefficients up to 0.81%). GENSAE and ESST4B model parameters were identical to three decimal places, indicating that the observed measurement differences of ≤1% did not affect the derived parameters at a single operating point of 71.2 MW (20.76% of rated capacity). PSS2A and HYGOV parameters were validated without re-derivation. A three-level comparison — measurement error (≤1%), equipment replacement effect (4–12%), and design-field discrepancy (8–50%) — shows that PMU measurement differences are approximately one order of magnitude smaller than parameter changes requiring re-determination. Within the scope of this single-unit, single-point demonstration, these findings provide preliminary evidence supporting PMU-based test exemption under Article 37 of the Korean Grid Reliability Standards.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.