Mobile detection device for high-altitude photovoltaic power station power grid disturbance simulation test system

Abstract

The invention relates to a mobile detection device for a high-altitude photovoltaic power station power grid disturbance simulation test system. The mobile detection device adopts a structure of a vehicle-mounted container and adopts the highly-integrated design integrated into three containers: the centralized control and transformer container, the buck transformer container and the boost transformer container. The detection device reduces the power grid side high voltage to a low voltage through a buck transformer, then, a low-voltage frequency converter is connected; and the low voltage is boosted to the high voltage side through a boosting transformer, and a measured photovoltaic power station is connected. The mobile detection device for the high-altitude photovoltaic power station power grid disturbance simulation test system is applied to the motion detection of a large and medium size photovoltaic power station at a high altitude of 4000 m and the below, is capable of meeting the requirements of field test of the photovoltaic power station with a capacity of 1.5Mw and the below, is capable of stimulating voltage and frequency disturbance when the power grid is in a steady state, and is used for detecting the power grid disturbance adapting capability of the photovoltaic power station.

Description

technical field [0001] The invention relates to a mobile detection system for a grid disturbance simulation system of a photovoltaic power station, in particular to a mobile detection device for a high-altitude photovoltaic power station grid disturbance simulation test system. Background technique [0002] In recent years, my country has vigorously supported the development of new energy technologies. With the rapid increase in the proportion of solar photovoltaic power generation installed capacity, the power system, like wind turbines, puts forward the requirements for the operation capacity of large and medium-sized photovoltaic power stations connected to the power grid when the power grid has a transient fault. The State Grid Corporation of China's "Technical Regulations on Connecting Photovoltaic Power Stations to the Grid" clearly requires that large and medium-sized photovoltaic power stations have the ability to resist grid frequency disturbances. [0003] With the ...

AI Technical Summary

Problems solved by technology

[0005] Most of the photovoltaic power stations in Qinghai Power Grid are concentrated in the terminal power grid with weak grid structure and small load base, which is reversely distributed with the power load. In addition, the intermittent and fluctuating output of photovoltaic power stations has a great impact on the safe and stable operation of the power grid.

At present, photovoltaic grid-connected testing equipment for inverter testing items is restricted by testing equipment and cannot perform high-voltage disturbance performance testing

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