Physical modeling system with wind power generation, photovoltaic power generation and energy storage integration system

Abstract

The invention discloses a physical modeling system with a wind power generation, photovoltaic power generation and energy storage integration system. The physical modeling system is based on power output characteristics of a wind power generation system, a photovoltaic power generation system and an energy storage system, and a converter system is utilized to simulate the wind power generation system, the photovoltaic power generation system and the energy storage system. The physical modeling system comprises an upper layer management module, a wind power generation simulation module, a photovoltaic power generation simulation module, an energy storage simulation module and a simulation power distribution network module. The wind power generation simulation module and the photovoltaic power generation simulation module can simulate power trends of a wind power field and a photovoltaic power station according to a set environment parameter. The energy storage simulation module employs a set of reversely connected current transformers to carry out simulation. Charge and discharge characteristics of a storage battery can be simulated, and an instruction of the upper layer management module can be received. According to a practical requirement, active and reactive power is sent or absorbed to stabilize voltage or frequency fluctuation of the power distribution network module. According to the invention, an inverter is utilized to establish a physical model, and a bottleneck problem that wind power, photovoltaic power and energy storage integration generation research can not be realized in a laboratory physical system is solved well.

Description

technical field [0001] The invention belongs to the field of wind power generation, photovoltaic power generation and energy storage system complementary power generation system combining power electronic conversion technology and computer control technology, and specifically relates to a physical modeling system of wind / solar / storage system. Background technique [0002] A large number of new energy devices such as distributed power supply and energy storage devices are connected, which is the inevitable way for the development of distribution network under the "low-carbon" economic development model. Larger gap. The current power distribution network, whether in terms of primary structure or secondary monitoring, still lacks systematic consideration for the access of the above-mentioned new energy equipment, basically does not have the relevant technical conditions or lacks technical means to comprehensively evaluate the large-scale access of the above-mentioned new equipm...

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Problems solved by technology

[0004] The above inventions have their own characteristics in the construction of wind-solar hybrid systems, but they are mainly reflected in the different methods of energy storage medium and charge-discharge control of the energy storage system. The common deficiency is that the systems they invented cannot be flexibly simulated in the laboratory. Carry out various researches on the power grid for large-scale connection of new equipment in various states

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