Method, device and equipment for controlling active power of new energy power station

Abstract

The invention discloses a new energy power station active power controlling method comprising the following steps: obtaining the maximum liftable power and the maximum falling power of a new energy power station according to the information and preset coefficients of the new energy power station; obtaining the output range of the active power of the new energy power station according to the maximum liftable power and the maximum falling power of the new energy power station; forming the first reference active power according to a received order; obtaining the second reference active power according to the frequency of the grid connected point of the new energy power station and the first reference active power; outputting the active power according to the first reference active power in the output range of the active power of the new energy power station when the received order is a stable control order; receiving a reset order, and outputting the active power according to the second reference active power in the output range of the active power of the new energy power station when the received order is a non-stable control order. The invention also discloses a new energy power station active power controlling device and equipment.

Description

technical field [0001] The invention relates to the technical field of new energy power generation, in particular to a method, device and equipment for controlling the active power of a new energy power station. Background technique [0002] New energy power generation technologies represented by wind power and photovoltaics have developed rapidly in recent years, and the proportion of new energy installed capacity in some areas has been quite high; due to the intermittent and fluctuating characteristics of new energy output, the safe and stable operation of the power system is facing great challenges. The power grid needs to fully exploit the regulation capacity to make up for the intermittency of new energy output, so as to ensure continuous and reliable power supply to the load; at present, at a specific moment, when the power grid operating parameters (frequency, voltage, etc.) are abnormal or fail, The active power adjustment method is mostly manual adjustment. Due to t...

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Problems solved by technology

[0002] New energy power generation technologies represented by wind power and photovoltaics have developed rapidly in recent years, and the proportion of new energy installed capacity in some areas has been quite high; due to the intermittent and fluctuating characteristics of new energy output, the safe and stable operation of the power system is facing great challenges. The power grid needs to fully exploit the regulation capacity to make up for the intermittency of new energy output, so as to ensure continuous and reliable power supply to the load; at present, at a specific moment, when the power grid operating parameters (frequency, voltage, etc.) are abnormal or fail, The active power adjustment method is mostly manual adjustment. Due to the manual adjustment, there are problems such as large errors and slow response speed. The new energy unit cannot realize the rapid adjustment of active power. Generally, it can only be used as the priority removal object of stability control. This in turn causes frequency issues in some cases, slow recovery times, etc., which ultimately reduces the stability of the grid

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