A Field Test Method for Dynamic Reactive Power Response Performance of Photovoltaic Power Plant

Abstract

The invention relates to a photovoltaic power station dynamic reactive response performance site testing method. Test points in the method are selected to be at the positions of photovoltaic power station combining points; voltage changes of buses in a photovoltaic power station are achieved by adjusting a main transformer tap. The method includes the steps of measuring output of active power and reactive power of the photovoltaic power station; confirming a detection device; adjusting an on-load transformer tap to enable the voltage of the combining points to meet the voltage deviation requirement; recording the active power output by the current station with the luminance keeping at 400 watt / square meter to be P0; setting the photovoltaic power station to work in the end voltage control mode; adjusting the on-load transformer tap to observe the reactive motion of the power station; analyzing test results to calculate photovoltaic power station dynamic response performance indexes. The photovoltaic power station dynamic reactive response performance site testing method solves the problems that when photovoltaic power station dynamic reactive response measurement is carried out, the volume of a testing device is limited, and a modeling testing method is too complex are solved, and a photovoltaic power station station-stage reactive response capacity testing method system at present is perfected.

Description

Technical field: [0001] The invention relates to an on-site test method for the dynamic reactive power response performance of a photovoltaic power station, and more particularly to an on-site test method for the dynamic reactive power response performance of a photovoltaic power station by utilizing the coordination and cooperation of a station-level on-load tap changer and a power station AVC system. Background technique: [0002] When the voltage at the grid-connected point of the photovoltaic power station has a large disturbance, the voltage amplitude drops to 90%U n ~0%U n At this time, the photovoltaic inverter needs to have low-voltage ride-through capability, and it is hoped that the photovoltaic power station can quickly respond to reactive power, compensate the corresponding reactive current, and realize the voltage support capability of the grid-connected point. At present, domestic and foreign standards have made regulations on the dynamic reactive power respon...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a field test method for the dynamic reactive power response performance of a photovoltaic power station. The method solves the problems of limited capacity of the test device and too complicated modeling and testing methods when measuring the dynamic reactive power response of a photovoltaic power station. Current test method system for reactive power response capability of photovoltaic power stations

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