Resumé
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 8119851 |
| Tidsskrift | I E E E Transactions on Smart Grid |
| Vol/bind | 10 |
| Udgave nummer | 2 |
| Sider (fra-til) | 1269-1279 |
| Antal sider | 11 |
| ISSN | 1949-3053 |
| DOI | |
| Status | Udgivet - mar. 2019 |
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Adaptive Reactive Power Control of PV Power Plants for Improved Power Transfer Capability under Ultra-Weak Grid Conditions. / Yang, Dongsheng; Wang, Xiongfei; Liu, Fangcheng; Xin, Kai; Liu, Yunfeng; Blaabjerg, Frede.
I: I E E E Transactions on Smart Grid, Bind 10, Nr. 2, 8119851, 03.2019, s. 1269-1279.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
TY - JOUR
T1 - Adaptive Reactive Power Control of PV Power Plants for Improved Power Transfer Capability under Ultra-Weak Grid Conditions
AU - Yang, Dongsheng
AU - Wang, Xiongfei
AU - Liu, Fangcheng
AU - Xin, Kai
AU - Liu, Yunfeng
AU - Blaabjerg, Frede
PY - 2019/3
Y1 - 2019/3
N2 - This paper analyzes the power transfer limitation of the PV power plant under the ultra-weak grid condition, i.e., when the Short-Circuit Ratio (SCR) is close to 1. It explicitly identifies that a minimum SCR of 2 is required for the PV power plant to deliver the rated active power when operating with the unity power factor. Then, considering the reactive power compensation from PV inverters, the minimum SCR in respect to Power Factor (PF) is derived, and the optimized coordination of the active and reactive power is exploited. It is revealed that the power transfer capability of PV power plant under the ultra-weak grid is significantly improved with the low PF operation. An adaptive reactive power droop control is next proposed to effectively distribute the reactive power demands to the individual inverters, and meanwhile maximize the power transfer capacity of the PV power plant. Simulation results of a 200 MW PV power plant demonstrate that the proposed method can ensure the rated power transfer of PV power plant with the SCR of 1.25, provided that the PV inverters are operated with the minimal PF=0.9.
AB - This paper analyzes the power transfer limitation of the PV power plant under the ultra-weak grid condition, i.e., when the Short-Circuit Ratio (SCR) is close to 1. It explicitly identifies that a minimum SCR of 2 is required for the PV power plant to deliver the rated active power when operating with the unity power factor. Then, considering the reactive power compensation from PV inverters, the minimum SCR in respect to Power Factor (PF) is derived, and the optimized coordination of the active and reactive power is exploited. It is revealed that the power transfer capability of PV power plant under the ultra-weak grid is significantly improved with the low PF operation. An adaptive reactive power droop control is next proposed to effectively distribute the reactive power demands to the individual inverters, and meanwhile maximize the power transfer capacity of the PV power plant. Simulation results of a 200 MW PV power plant demonstrate that the proposed method can ensure the rated power transfer of PV power plant with the SCR of 1.25, provided that the PV inverters are operated with the minimal PF=0.9.
KW - Droop control
KW - Impedance
KW - Inverters
KW - Photovoltaic power systems
KW - Power generation
KW - Power system stability
KW - Power transmission lines
KW - Power transmission.
KW - Reactive power
KW - Reactive power compensation
KW - Voltage control
UR - http://www.scopus.com/inward/record.url?scp=85035809476&partnerID=8YFLogxK
U2 - 10.1109/TSG.2017.2762332
DO - 10.1109/TSG.2017.2762332
M3 - Journal article
VL - 10
SP - 1269
EP - 1279
JO - I E E E Transactions on Smart Grid
JF - I E E E Transactions on Smart Grid
SN - 1949-3053
IS - 2
M1 - 8119851
ER -