Calculating method suitable for harmonic pollution responsibilities in power quality data interchange format

A data exchange format, power quality technology, applied in spectrum analysis/Fourier analysis and other directions, to achieve the effect of improving power quality management level and solving harmonic pollution problems
CN103163373AInactive Publication Date: 2013-06-19NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Publication Date
2013-06-19
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a calculating method suitable for harmonic pollution responsibilities in a power quality data interchange format in the technical field of power. According to the technical scheme, the method comprises the following steps of: calculating system harmonic impedance according to nominal voltage of a power grid and three-phase shortcircuit capacity of a common coupling point; on this basis, calculating harmonic voltage effective value amplitude contributed by a concerned harmonic source to a bus at the common coupling point, and solving background harmonic voltage effective values contributed by rest harmonic sources except the concerned harmonic source at the common coupling point; further calculating an included angle cosine between the harmonic voltage effective value of the bus and the harmonic voltage effective value contributed by the concerned harmonic source; and finally, calculating the harmonic pollution responsibilities generated by the concerned harmonic source at the bus. The calculating method has the advantages that the harmonic pollution responsibilities of the harmonic source can be monitored every day on the basis of the conventional power quality monitoring system; and the calculating method has great significance for the further solving of the harmonic pollution problems and the improvement of the power quality management level.
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Description

technical field

[0001] The invention belongs to the design field of calculation methods for harmonic pollution responsibilities, and in particular relates to a calculation method for harmonic pollution responsibilities applicable to power quality data exchange formats. Background technique

[0002] Regarding the harmonic pollution of the power system, my country's Electric Power Law stipulates: "Who pollutes, who governs." However, the current power system lacks a quantitative division of responsibilities for various harmonic pollution sources, and the status quo of unclear responsibilities has brought difficulties to harmonic governance. Harmonic voltage liability is a common indicator to measure harmonic pollution liability. The calculation methods of harmonic pollution liability at home and abroad can be divided into two categories: the method based on equivalent circuit simplification and the method based on data analysis. The equivalent circuit simplification method est...

Claims

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