Local power generation and power supply experiment system comprising electric vehicle

Abstract

The invention discloses a local power generation and power supply experiment system comprising an electric vehicle. The system comprises a wind power generation unit, a photovoltaic generating grid-connected unit energy storage unit, an electric vehicle charge and discharge unit, a tertiary load, a load control apparatus, an artificial load, a PV simulator, a frequency converter, an AC grid-connected cabinet, an access cabinet, a central controller, interconnection switches, a cable and a bus. According to the invention, through the state of each interconnection switch, different operation modes and configuration modes of multiple local power generation and power supply experiment systems can be realized, correlation networking experiments can be carried out through the different operation modes, and the operation modes of the multiple local power generation and power supply experiment systems mainly comprise the following types: a local power generation and power supply experiment system single grid-connected mode, a grid-connected and island switching transient mode, a local power generation and power supply experiment system all grid-connected mode and a local power generation and power supply experiment system island mode. Important improvements are made from such aspects as diversity of types of distributed power sources and energy storage devices, flexibility of operation modes and networking modes, comprehensiveness of control strategy development, comprehensiveness of scientific experiment research and the like.

Description

technical field [0001] The invention relates to the technical field of smart grids, in particular to an experimental system for local power generation and power supply including electric vehicles. Background technique [0002] Distributed power (wind, light) has great advantages in power supply reliability and flexibility, and is an effective supplement to thermal power generation; the incorporation of a large number of distributed power in conventional power grids and the impact of electric vehicle grid integration will It has a great impact on the transient stability, voltage stability, and frequency control of the power grid; in order to give full play to the potential of distributed power sources and reduce the adverse effects of electric vehicles connected to the grid, multiple distributed power sources, energy storage devices, electric vehicles and The controllable loads form a local power generation system according to a certain topology; the construction of the exper...

AI Technical Summary

Problems solved by technology

[0003] At present, the local power generation and power supply experimental systems that have been built all have the defects of inflexible operation mode and configuration network, which makes them have obvious limitations in terms of operational stability and comprehensiveness of scientific research; The power supply experimental system connects the micro gas turbine and fuel cell as the main power supply and energy storage device on the DC side together with the distributed power supply as a whole and connects to the local power supply through the power electronic interface, mainly considering its "plug and play" nature. But it is not allowed to send power to the large power grid; the choice of distributed power in the European Union and Japan is more diverse than that of the American experimental system, and at the same time it is allowed to send power to the large power grid, but they have common operating modes and networking methods. Limitation, that is, the lack of connection between multiple local power generation and supply, which makes it impossible to conduct research on the interaction of multiple local power generation and supply

Images