스마트인버터 전압제어의 파라미터 개선을 통한 PV hosting capacity 재추정 방법
Re-estimation of PV hosting capacity by improving parameters for voltage controls of the smart inverter
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초록
배전계통에 연계되는 분산전원의 수가 증가함에 따라 계통 내 과전압 문제를 일으키지 않고 접속될 수 있는 한계접속용량인photovoltaic(PV) hosting capacity(HC)를 추정하는 것이 매우 중요해졌다. 이에 본 연구에서는 접속점의 전압을 유지하는 제어를 수행하면서 향상된 hosting capacity를 추정하기 위한 방안을 제안하고 있다. 제안된 방안은 two-stage optimizationframework로 구성되며 Stage 1에서 IEEE Std 1547-2018 가이드라인을 이용한 Volt-Var(VV) 및 Volt-Watt(VW) 제어 PVhosting capacity 추정을 수행한다. Stage 2에서는 VV 및 VW의 파라미터를 개선하는 절차를 거쳐 향상된 PV HC 값을 다시 도출해낸다. 제안한 방식의 성능 검증을 위해 IEEE 37-버스 시스템이 OpenDSS를 사용해 테스트되었으며 결과에서 제안된 방식의적용을 통해 PV hosting capacity가 증가함을 확인하였다
Abstract
This paper proposes two-stage optimization framework to re-estimate the photovoltaic (PV) hosting capacity (HC)by improving parameters for voltage controls of the smart inverter. In the first stage, PV HC is estimated consideringVolt-Var (VV) and Volt-Watt (VW) controls, aligning with IEEE Std 1547-2018 guidelines. In the second stage, adjustparameters of VV and VW to improve HC. To investigate the performance of the proposed algorithm, simulationsconducted using OpenDSS on an IEEE 37-bus system. The results demonstrate that effectively increases PV HC.
참고문헌 (17)
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