An automatic method for power quality interference source of distribution grid

A technology for power quality disturbance and power quality monitoring, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve problems such as low efficiency and inability to achieve automatic positioning

Inactive Publication Date: 2008-09-17
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0008] In order to overcome the deficiencies of manual positioning, low efficiency, and inability to realize automatic positioning in the existing distribution network power quality disturbance source positioning method, the present invention provides a distribution network power quality disturbance source that automatically locates the disturbance source and has high efficiency automatic positioning method

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  • An automatic method for power quality interference source of distribution grid
  • An automatic method for power quality interference source of distribution grid
  • An automatic method for power quality interference source of distribution grid

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings.

[0048] refer to Figure 1 to Figure 4 , an automatic precise positioning method of a power quality disturbance source, the automatic precise positioning method comprising: (A) a networked power quality monitoring system established: a power quality monitoring device PQM is installed in a circuit of a radial power distribution system, the The above PQM communicates with the regional power quality management center at high speed, and sends the real-time monitoring data or analysis results of each power quality monitoring point to the management center;

[0049] (B) According to the known distribution system topology, construct a rooted tree structure diagram commonly used in power system analysis, and identify the layout of each PQM in the system;

[0050] (C) Establish a system coverage matrix, the system coverage matrix A L×M for:

[0051]

[0052] Among them, L is...

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Abstract

The present invention provides an automatic location method of distribution network power quality disturbance source, including: (A) constructing a network power quality monitor system in the distribution network; (B) constructing a rooted tree of the distribution system according to the topology of the distribution network; (C) establishing a system covering matrix according to the position relation between each node of the rooted tree and the each power quality monitor device; (D) establishing a system direction matrix according to the judging result of disturbance direction of each PQM when the disturbance is happened; (E) processing primary disturbance source location operation according to the system cover matrix and the system direction matrix. The invention provides a disturbance source location by itself, a disturbance source location method of the distribution network power quality having high efficiency.

Description

technical field [0001] The invention relates to an automatic positioning method of a power quality disturbance source in a power system network. Background technique [0002] At present, research hotspots related to power quality in power systems mainly focus on the following aspects: identification and processing of power quality signals, power quality evaluation indicators, power quality monitoring devices and system structures, power quality control, etc. However, the location technology of the disturbance source after the power quality event is also very important, not only helps the power department and the user to determine the responsibility and the reasonable settlement of the dispute, but also plays an important role in guiding the power department to formulate power quality mitigation and control strategies . [0003] There are few studies on the location method of power quality disturbance source, and there are mainly two types of methods: [0004] 1. A method f...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G01R31/00
Inventor 翁国庆张有兵王晶胡轶
Owner ZHEJIANG UNIV OF TECH
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