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Photovoltaic (PV) generation system is an intermittent power source in traditional power grid. With its capacity expanding, PV power station (PS) affects the power grid more and more obviously. In this paper, stochastic chance-constrained programming of large-scale (LS) grid-connected (GC) PVPS's capacity limit is studied in detail. The problem is represented as a planning model which maximizes total...
Small hydro (SH) / photovoltaic (PV) hybrid power system (HPS) is a clean and economic way of renewable energy power generation, which has a good complementary according to local resources distribution features. Operation characteristics of SH and PV generation system are analyzed in detail and a novel control strategy is proposed in this paper. The PV generation system is designed to have the same...
The large-scale photovoltaic (LSPV) power station in desert usually connects to local electric grid through long high- voltage transmission lines. However, it will impact the voltage profile along the transmission line due to the solar irradiance nature. In this paper, a simple and accurate method based on power system analysis principle is developed to analyze impacts of the grid-connected LSPV power...
The principles and key technologies of automatic sun-tracking control system in PV generation are introduced. In general for PV application, the automatic sun-tracking system is needed to operate reliably in poor environment for a long time. A stepper active tracking control technology is adopted. Based on control core of microprocessor, the automatic sun-tracing system is developed. The system has...
A power supply system applying for micro-grid is designed with grid-connected operation and autonomous operation modes. Through a novel anti-island (AI) detection method, the current status of electricity network can be detected quickly and the operation mode of inverter will be ascertained. Based on analysis of transition between grid-connected operation and autonomous operation modes, the output...
The power flow analysis of a power grid containing photovoltaic (PV) generating system is the foundation of studying steady-state characteristics of large- scale PV power station integrating into power grid. Generally, PV systems are coupled by power electronic converters. Thus, the steady-state modeling can be based on PV array characteristics and principles of power electronic transforms. The model...
When the volumetric loading is greater than 50 kg-COD/m 3 -d, the performance of the tapered anaerobic fluidized-bed bioreactors is more efficient than that of the conventional anaerobic fluidized-bed bioreactor; however, the increasing percentages of the COD removal efficiency are not very significant when the taper angle is greater than 5°. The arithmetic means of the biofilm thickness,...
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