Modeling method for grid-connected photovoltaic power supply based on PSASP (power system analysis software package)
A technology of photovoltaic power supply and modeling method, which is applied in photovoltaic power generation, sustainable buildings, renewable energy integration and other directions, and can solve the problems of lack of analysis methods for the safe and stable operation of power grids and lack of photovoltaic power supply simulation system.
Inactive Publication Date: 2012-02-15
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +1
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[0002] At present, there is no simulation system for photovoltaic power in the existing power system analysis programs, so there is no analysis method for the safe and stable operation of the entire power grid after photovoltaic power grid-connected operation
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[0036] A modeling method based on PSASP grid-connected photovoltaic power supply, characterized in that the specific steps are as follows:
[0037] (1) First build a three-phase photovoltaic power simulation system and use conventional simulation verification methods for simulation verification:
[0038] Use Matlab / Simulink tool software to build a three-phase grid-connected photovoltaic power simulation system. The three-phase grid-connected photovoltaic power simulation system includes a photovoltaic array 1, a DC / DC boost circuit 2, an inverter 3, and a grid-connected filter 4 , a maximum power tracking controller 6 and an inner and outer loop controller 7; the output terminal of the photovoltaic array 1 passes through a DC / DC boost circuit 2, an inverter 3, a grid-connected filter 4, and is connected to the grid 5 in sequence; the The output terminal of the photovoltaic array 1 is connected to the control terminal of the DC / DC boost circuit 2 via the maximum power tracker ...
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The invention relates to a modeling method for a grid-connected photovoltaic power supply based on a PSASP (power system analysis software package). The method comprises the following steps of (1) firstly building a three-phase photovoltaic power supply simulation system and utilizing a conventional simulation verification method to perform simulation verification; (2) and then building a UD (user-defined) model of the photovoltaic power supply in the PSASP: a. establishing transfer functions for various parts of the photovoltaic power supply, drawing various functional block diagrams, establishing connecting relationships among the functional block diagrams and designating input and output relationships, i.e. the UD model of the photovoltaic power supply is established; b. balancing the initial value of the UD module; and c. solidifying the UD model in the PSASP. The modeling method provided by the invention has the advantages that the safe and stable running situation of the overall power grid after the grid-connected photovoltaic power supply is operated can be analyzed and researched in detail, thereby providing a predicable solution for the stability problem possibly produced after the photovoltaic power generation is connected in the grid, and improving the capability for switching the power grid in the photovoltaic power generation and the capability for stable running of the system after the power grid is switched-in.
Description
technical field [0001] The invention relates to a modeling method of grid-connected photovoltaic power supply based on PSASP (Power System Analysis Software Package). It is suitable for detailed analysis and research on the safe and stable operation of the entire power grid after photovoltaic power grid-connected operation. Background technique [0002] At present, none of the existing power system analysis programs has a photovoltaic power simulation system, so there is no means of analyzing the safe and stable operation of the entire power grid after the photovoltaic power grid-connected operation. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a modeling method of grid-connected photovoltaic power supply based on PSASP. [0004] The technical solution adopted by the present invention to solve its technical problems: [0005] The specific steps of the modeling method of grid-connected photovoltaic power supp...
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Login to View More IPC IPC(8): H02J3/38
CPCY02B10/10Y02E10/56
Inventor 王晓蔚范辉夏天石振刚
Owner STATE GRID HEBEI ENERGY TECH SERVICE CO LTD