Harmonic and voltage sag monitoring point unified configuration method and system
A technology of voltage sag and configuration method, applied in the direction of measuring device, measuring electricity, measuring electrical variable, etc., can solve the problems of redundancy, increase of calculation time, uneconomical monitoring device and so on
Active Publication Date: 2017-03-08
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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[0003] At present, in the research of power quality monitoring, it is mainly single index monitoring, that is, the optimal configuration of harmonic measurement points is performed based on harmonic estimation, or the optimal configuration of monitoring points is simply based on voltage sag as the monitoring object. A monitoring device that configures two indicators separately has the problems of being uneconomical, generating redundancy and increasing calculation time
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[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "or / and" includes any and all combinations of one or more of ...
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The invention provides a harmonic and voltage sag monitoring point unified configuration method and a harmonic and voltage sag monitoring point unified configuration system. The harmonic and voltage sag monitoring point unified configuration comprises the steps of: acquiring grid information parameters; determining a voltage sag configuration scheme according to the grid information parameters and a voltage sag monitoring point configuration model; judging whether the voltage sag configuration scheme satisfies a whole grid harmonic observable constraint condition; and if so, determining the voltage sag configuration scheme as a unified configuration scheme. When the voltage sag configuration scheme satisfies the whole grid harmonic observable constraint condition, the voltage sag configuration scheme satisfies a voltage sag constraint condition of the voltage sag monitoring point configuration model as well as the whole grid harmonic observable constraint condition, thus the voltage sag configuration scheme can be determined as the unified configuration scheme, and monitoring points set according to the unified configuration scheme are capable of monitoring two kinds of electric energy quality conditions of voltage sag and harmonics simultaneously.
Description
technical field [0001] The invention relates to the field of power quality monitoring, in particular to a unified configuration method and system for harmonic and voltage sag monitoring points. Background technique [0002] The monitoring of power quality has always been the key point and basic technology for the study of power quality problems. However, it is impossible to install power quality monitoring devices at all nodes in a huge power system. The optimal configuration method of the device. Power quality indicators generally include harmonics, voltage sags, swells, voltage fluctuations, flicker, etc. Power quality monitoring is mainly to monitor the entire network. From the perspective of power quality monitoring, it is generally necessary to comprehensively consider various aspects question. The guiding principles for the optimal configuration of power quality monitoring devices proposed in China mainly include: monitoring points can cover all voltage levels in the...
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Inventor 黄裕春许中马智远栾乐杜堉榕崔晓飞崔屹平覃煜陈国炎肖天为陈俊文昊罗健斌李志彬
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD