SYNTHESIS OF FREQUENCY FILTERS FOR SYSTEMS OF ELECTRIC POWER GENERATION, CONVERSION AND DISTRIBUTION Russian patent published in 2015 - IPC H02J3/01 

FIELD: electric power engineering.

SUBSTANCE: under definite conditions, the main frequency, voltage and filter reactive power are measured for them to be set. Any quantity of filter n band passes (1 ≤ n < ∞) is measured and set. Filter (n-1) retardation frequencies are defined. Required filter structure is determined composed of n oscillating circuits, first of which is a serial one the others (n-1) are parallel. Then, capacity of serial oscillating circuit is defined to generate the matrix of synthesized filter. Filter inductance is defined by solving the synthesized filter matrix by Gauss-Jordan method or other numerical processes. Then, capacities of parallel oscillating circuits of the filter are calculated. Now, data are output on structure and parameters of factors, as well as on preset and measured magnitudes. This is done for physical implementation and monitoring of synthesized filters. Note here that this method allows a high accuracy and efficiency in real time synthesis of frequency filters for n frequencies of current spectrum and voltage in electric power generation, conversion and distribution systems.

EFFECT: expanded spectra of filtration frequencies, higher accuracy and efficiency of frequency filter synthesis.

8 dwg