Generator set primary frequency modulation performance testing method for simulating grid frequency change

Abstract

The invention proposes a generator set primary frequency modulation performance testing method for simulating grid frequency change, which comprises the following steps: arranging a frequency difference analog module and a selecting module in a generator set frequency control loop; selecting grid disturbance frequency change data ; setting the frequency difference analog module according to the data so as to enable the frequency difference analog module to simulate the frequency change during grid disturbance and to send a frequency difference signal; and allowing the selecting mode to break a frequency signal of the actual set, access the analog frequency difference signal sent by the analog module so as to test the primary frequency modulation performance of the generator set and record test process data. The method enables the primary frequency modulation of the generator set to meet the actual requirements of a grid, improves the electric energy quality of the grid, avoids the unnecessary regulation effect and saves the resources of the generator set.

Description

technical field [0001] The invention relates to a method for testing the performance of primary frequency regulation of a generating set, and in particular to a method for testing the performance of primary frequency regulation of a generating set that simulates the frequency change of a power grid. Background technique [0002] The grid frequency is the basis for the balance between power generation and load. When the power generation is equal to the load, the frequency of the grid is stable; when the power is greater than the load, the frequency of the grid rises; Reduced frequency. [0003] Primary frequency regulation refers to the automatic control process that once the frequency of the grid deviates from the rated value, the control system of the generator set in the grid automatically controls the increase or decrease of the active power of the unit, limits the change of the grid frequency, and maintains the stability of the grid frequency. Such as figure 1 as shown...

AI Technical Summary

Problems solved by technology

Artificially simulating the frequency difference generally adopts a simple frequency difference step disturbance, which is different from the grid frequency change when the grid is disturbed, and cannot correctly reflect the primary frequency modulation performance of the generator set, and it is too expensive to pass the actual operation test, and it is impossible to test and adjust the primary frequency regulation performance of a generator set

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