A method for fast power response of a photovoltaic power station inverter

Abstract

A method for fast power response of inverter of photovoltaic power station is provided. In this method, the total station inverter is configured as a common inverter which participates in power regulation and a sample inverter with natural maximum power generation which does not participate in power regulation, A DC bus voltage reference value of a sample inverter of an adjacent area is obtained by a common inverter based on communication, At that same time, the power target value sent from the fast power control device at the factory station end is received, and regulated by voltage outer loop and current inner loop, a fast power drop or leapfrog power climb execution response are performed so as to achieve a fast power control objective for the individual inverter of 50 milliseconds andtotal station of 100 milliseconds, to meet the response requirements of the system for 100 millisecond regulation of the photovoltaic power plant in case of power grid disturbance or abnormal state, ,thereby improving the stability of the power grid, as well as the photovoltaic grid-friendly and cost-effective performance.

Description

technical field [0001] The invention relates to the field of new energy power generation control, in particular to the power control of a photovoltaic inverter in a photovoltaic power station. Background technique [0002] With the increasing proportion of new energy in the power grid, the installed capacity of new energy in the "Three North" region is close to or even exceeds 30%. The high proportion of new energy severely squeezes the space for primary frequency regulation and rapid reserve capacity of conventional energy. , so that the operation of the power grid faces a series of challenges, and there is an urgent need for new energy such as photovoltaic power plants to speed up the response speed of power regulation to meet the needs of fast response to power regulation during power grid failures or disturbances, participate in primary frequency regulation of the power grid, and become a "friendly" power source for the power grid . In addition, for my country's Tibet, ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a method for fast power response of photovoltaic power plant inverters, which can solve the problem of slow execution and fast execution of a single photovoltaic inverter only relying on its own information to increase or decrease power by referring to the state of adjacent sample inverters There is a problem with a high risk of jumping off the plane

Images