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

A technology of a generator set and a test method, applied in the direction of motor generator testing, etc., can solve the problems of high cost, impossible to test and adjust the generator set, unable to correctly reflect the primary frequency regulation performance of the generator set, etc., so as to save resources and avoid the adjustment effect. , the effect of improving power quality

Active Publication Date: 2010-03-17
SHANGHAI MINGHUA ELECTRIC POWER TECH & ENG +3
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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

Method used

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

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Embodiment Construction

[0016] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0017] Such as image 3 as shown, image 3 It is a schematic diagram of a primary frequency modulation performance testing method according to an embodiment of the present invention. Among them, a selection module is set at the actual frequency difference input terminal of the generator set control system, which is connected with a frequency difference simulation module, and controls switching between the actual frequency difference and the simulated frequency difference; select the frequency change data when the power grid is disturbed; according to the above data Set the above-mentioned frequency difference simulation module to simulate the frequency change when the power grid is disturbed and send out a frequency difference signal. The simulated frequency difference is as follows Figure 4 As ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
Inventor 沈丛奇
Owner SHANGHAI MINGHUA ELECTRIC POWER TECH & ENG
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