Urban power distribution network harmonic instability monitoring device and method

A monitoring device and distribution network technology, applied in the field of distribution network, can solve problems such as harmonic instability, urban distribution network harmonic instability, and low efficiency of monitoring methods

Active Publication Date: 2021-04-30
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0004] This application provides a device and method for monitoring harmonic instability of urban distribution network, which is used to solve the existing monitoring method of harmonic instability of urban distribution network inefficient technical issues

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  • Urban power distribution network harmonic instability monitoring device and method
  • Urban power distribution network harmonic instability monitoring device and method

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Embodiment Construction

[0029] The embodiment of the present application provides a device and method for monitoring harmonic instability of an urban distribution network, which are used to solve the technical problem of low efficiency of the existing monitoring method for harmonic instability of an urban distribution network.

[0030] In order to make the purpose, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the following The described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0031] see figure 1 , the ...

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Abstract

The invention provides an urban power distribution network harmonic instability monitoring device and method. The urban power distribution network harmonic instability monitoring device provided by the invention is connected with a power distribution network bus, a data acquisition module continuously acquires the three-phase electrical parameters of a power distribution network, and then the harmonic instability of the power distribution network is judged according to the acquired three-phase electrical parameters in combination with a preset harmonic impedance calculation mode and a harmonic instability judgment mode. According to the method, the online judgment of the harmonic instability phenomenon of the urban power distribution network is realized, the impedance characteristic of the urban power distribution network can be detected, and the technical problem of low efficiency of an existing urban power distribution network harmonic instability monitoring mode is solved.

Description

technical field [0001] The present application relates to the field of distribution network technology, in particular to a device and method for monitoring harmonic instability of an urban distribution network. Background technique [0002] With the rapid growth of my country's urban economy and the acceleration of urbanization, urban electricity consumption continues to increase. On the one hand, the density of urban electricity loads has increased accordingly. On the other hand, the composition of urban electricity consumption has become increasingly complex. In the construction and transformation of urban distribution network, high voltage directly enters the load center, forming a power supply mode of high voltage power receiving-transformer step-down-low voltage distribution, making the urban distribution network a multi-voltage level, multi-power source, multi- A complex network system with users, multiple functions, high density, and heavy load. When the power electr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H02J3/01
CPCH02J13/00006H02J3/01Y04S40/124Y02E40/40Y02E60/00Y04S40/12
Inventor 雷二涛马明王玲徐柏榆杜婉琳
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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