Abstract
As a clean energy power generation technology, photovoltaic generation has the characteristics of low carbon, green and environmental protection. More and more countries pay close attention to it, more than one megawatt demonstration projects of grid photovoltaic power station has been commenced or built. In order to study interconnection characteristics of large-scale photovoltaic power station better, reduce the effects of photovoltaic power station to the grid, we need to set up photovoltaic power station simulation model. However, the model of photovoltaic power station is complex, the speed of system simulation become slow after establish. In this paper, a real-time digital simulator based on the photovoltaic power station equivalent method will be given, through the proposed hierarchical equivalence method can simplify the process of equivalent of photovoltaic power station, shortening the period of equivalent model, and can be carried out in the process of each layer of the equivalent model accuracy validation, improve the accuracy of the equivalent model.
Highlights
Due to the rapid consumption of traditional fossil fuels and worsening environmental pollution, there is growing concern over the development of new energy all over the world
A detailed Photovoltaic Power Station (PVPS) model will greatly increase the complexity of the simulation, resulting in lowering the speed of system simulation, costing a lot of computing time and reducing the efficiency of the system simulation, so it is important to establish the equivalent model of large-scale PV power station
This paper provides an equivalent modeling method for the photovoltaic power stations, to shorten the equivalent modeling time and simplify the process of the equivalent modeling
Summary
Due to the rapid consumption of traditional fossil fuels and worsening environmental pollution, there is growing concern over the development of new energy all over the world. Most of large-scale grid-connected photovoltaic power station in China is still in the experimental stage and there is no united design specification and access standard, so the security and stability of power system can’t be guaranteed. A detailed PVPS model will greatly increase the complexity of the simulation, resulting in lowering the speed of system simulation, costing a lot of computing time and reducing the efficiency of the system simulation, so it is important to establish the equivalent model of large-scale PV power station. This paper provides an equivalent modeling method for the photovoltaic power stations, to shorten the equivalent modeling time and simplify the process of the equivalent modeling. This method can be verified in each equivalence procedure, which improves the accuracy of the equivalent model
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