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Distributed photovoltaic power generation system equivalent simulation model based on PSCAD (Power System Computer Aided Design)/EMTDC (Electromagnetic Transient Including DC)

A distributed photovoltaic and power generation system technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of huge amount of nonlinear calculation of photovoltaic inverter simulation switch simulation

Active Publication Date: 2016-05-25
STATE GRID CORP OF CHINA +2
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Problems solved by technology

The purpose is to solve the problem of huge amount of nonlinear calculation of photovoltaic inverter simulation switch simulation in photovoltaic power generation system

Method used

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  • Distributed photovoltaic power generation system equivalent simulation model based on PSCAD (Power System Computer Aided Design)/EMTDC (Electromagnetic Transient Including DC)
  • Distributed photovoltaic power generation system equivalent simulation model based on PSCAD (Power System Computer Aided Design)/EMTDC (Electromagnetic Transient Including DC)
  • Distributed photovoltaic power generation system equivalent simulation model based on PSCAD (Power System Computer Aided Design)/EMTDC (Electromagnetic Transient Including DC)

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Embodiment Construction

[0049] The invention is a simulation equivalent model of a distributed photovoltaic power generation system based on PSCAD / EMTDC.

[0050] The invention proposes for the first time that the inverter module that affects the calculation speed is equivalently simplified into a wiring structure of a controllable voltage source module. According to the control principle of the inverter module, the inverter module in the model is omitted and directly replaced by the controllable voltage source module to simulate the port voltage output by the inverter module. In this way, the inverter module in the model that originally required a large amount of calculation is replaced by the controllable voltage source module with a small amount of calculation. The inverter voltage source module is connected to the power grid without affecting the control principle and external characteristics of the model, which provides the possibility for the simulation of large-scale photovoltaic power generat...

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Abstract

The invention belongs to the technical field of distributed photovoltaic power generation, particularly relates to a distributed photovoltaic power generation system equivalent simulation model based on PSCAD (Power System Computer Aided Design) / EMTDC (Electromagnetic Transient Including DC), and is suitable for simplifying a distributed power generation system simulation model in the PSCAD / EMTDC and carrying out equivalent simulation on large distributed power station in the PSCAD / EMTDC. The distributed photovoltaic power generation system equivalent simulation model comprises a photovoltaic array module, a photovoltaic array controllable voltage source module, an inverter controllable voltage source module, a MPPT (Maximum Power Point Tracking) control module of the photovoltaic array controllable voltage source module, a control module of the inverter controllable voltage source module, a two-phase rotating coordinate system to three-phase stationary coordinate system conversion module and an inverter side filtering inductance and equivalent power grid model, wherein the photovoltaic array module, the inverter controllable voltage source module and the inverter controllable voltage source module are connected through the inverter side filtering inductance and equivalent power grid model. A calculation data size can be reduced, simulation time is shortened, and calculation speed and efficiency can be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of distributed photovoltaic power generation, and in particular relates to a distributed photovoltaic power generation system simulation equivalent model based on PSCAD / EMTDC, which is applicable to the simplification of the distributed power generation system simulation model in PSCAD / EMTDC, and in PSCAD / EMTDC Perform equivalent simulation of large-scale distributed power plants to improve the speed and efficiency of simulation. Background technique [0002] At present, when building a distributed photovoltaic power generation system simulation model in PSCAD / EMTDC, the circuit is mainly composed of photovoltaic simulation, converter and grid main circuit and control circuit. The main technical difficulty of this simulation is concentrated on the control of the converter. The pulse generation part of the converter is obtained through various mathematical algorithms, and the pulse generation part of the conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 程孟增沈方孙刚梁毅张明理宋颖巍韩震焘张子信宋坤于佳戴晓宇薛琪尹婧娇金宇飞宋卓然
Owner STATE GRID CORP OF CHINA
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