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In this paper, the performance ratio (PR) of PV system is evaluated by field testing. The sampling strategy of efficiency chain for PV system is determined by analyzing long-term operation monitoring data of PV system. The efficiency parameters of components are extracted. The efficiency model of components in PV system is established in PVsyst software. Combining efficiency models, geographic information...
Reactive power control is one of important grid-connected performance index of the photovoltaic (PV) power station. PV power station must provide corresponding reactive power under different grid disturbance condition, in order to meet grid code. The dynamic reactive power compensation devices and grid-connected PV inverters both provide reactive power for PV power station, but with different performances...
In this paper, the method of irradiance on horizon change to irradiance on PV array is analyzed. The two PV systems which in same latitude but different irradiance resource and irradiance ingredients are simulated in order to got the optimal tilt of PV array. the tilt of PV array should chosen from 0° to local latitude. In direct irradiance abundant region, the tilt should be increased. In diffuse...
With a large number of PV power station integrated to the grid, some problems such as the grid-connected stability, relay protection, etc. brought out by it. In this paper, dynamic modelling and control strategy of grid-connected PV power stations were researched based on DIgSILENT. First, the equivalent model for PV power station was established consisting of PV arrays, power inverters, transformers,...
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