Parallel type active power filter performance detection method considering power grid intensity
A power filter and power grid strength technology, which is applied in the direction of instruments, measuring electricity, and measuring devices, can solve the problems of power quality deterioration, failure to work normally, and loss of harmonic control capabilities in distribution networks.
Active Publication Date: 2021-03-26
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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However, the existing detection technology fails to take into account the strength of the equipment pre-connected to the grid, and the equipment is usually tested in an ideal grid environment, resulting in some equipment that has passed the test in the laboratory and cannot work normally in the field, losing the ability to control harmonics Even aggravate the deterioration of the power quality of the distribution network, the loss outweighs the gain
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[0054] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.
[0055] Such as figure 1 As shown, a kind of parallel active power filter performance detection method of the present invention that considers grid strength comprises the following steps:
[0056] Step 1: Build a power grid simulation platform with different strengths;
[0057] Such as figure 2 As shown, the different strength power grid simulation platform includes a voltage disturbance source, an impedance regulator, a harmonic source load simulation device and a data acquisition unit;
[0058] The voltage disturbance source is used to simulate the voltage waveform of the distribution network;
[0059] The impedance regulator is used to adjust the grid strength, that is, the grid impedance; ...
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The invention discloses a parallel type active power filter performance detection method considering power grid intensity. The method comprises the steps of: building a power grid simulation platformwith different intensities; carrying out parallel type active power filter performance detection under different power grid intensities on the building platform; and analyzing and processing a detection result to obtain various index reference values for guiding the model selection and transformation of the active power filter equipment. Compared with a traditional method, the method provided by the invention can provide active power filter performance detection under different power grid intensities, and the obtained test result can also provide active power filter equipment type selection reference for different power grids.
Description
technical field [0001] The invention belongs to the technical field of performance detection of a parallel active power filter, and relates to a performance detection method of a parallel active power filter considering the strength of a power grid. Background technique [0002] In the current distribution network, a large number of distributed power sources and loads based on power electronic technology are connected. The application of distributed power sources and loads has greatly improved the flexibility of modern power grids and brought huge economic benefits. However, a large number of harmonics caused by the power electronic switching process are also introduced into the distribution network, seriously affecting the power quality of the distribution network, reducing the life of electrical equipment in the distribution network, and causing certain economic losses. In order to make up for this defect, active power filters are widely used in harmonic control of distri...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 唐钰政刘书铭张博代双寅李琼林王毅郑晨
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST