Distribution transformer, voltage regulation ratio detection method thereof and system and control method

A technology for distribution transformers and detection methods, which is applied in the field of on-load voltage regulation distribution transformers and voltage regulation distribution transformers, and can solve problems such as low accuracy and slow switching ratio of voltage regulation

Pending Publication Date: 2018-05-15
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Problems solved by technology

[0004] Based on this, it is necessary to provide a detection method and system for the voltage regulation ratio of distribution transformers, a control method for distribution transformers, and a voltage regulation distribution system for the problem of slow switching and low accuracy of voltage regulation ratios in distribution transformers. electric transformer

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  • Distribution transformer, voltage regulation ratio detection method thereof and system and control method
  • Distribution transformer, voltage regulation ratio detection method thereof and system and control method
  • Distribution transformer, voltage regulation ratio detection method thereof and system and control method

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[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the protection scope of the present invention.

[0050] see figure 1 , figure 1It is a flowchart of a detection method for a voltage regulation ratio of a distribution transformer in an embodiment of the present invention. The detection method for a distribution transformer voltage regulation ratio in this embodiment includes the following steps:

[0051] Step S110: Calculate the initial voltage regulation ratio of the distribution transformer according to the magnitude of the primary side input voltage, the magnitude of the secondary side current and the phase value of the secondary side current of the d...

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Abstract

The invention relates to a voltage regulation ratio detection method of a distribution transformer. The method comprises the steps that the initial distribution transformer voltage regulation ratio iscalculated according to the primary side input voltage amplitude, the secondary side current amplitude and the secondary side current phase value of the distribution transformer; according to a voltage standard value and the instantaneous effective value of the secondary side output voltage of the distribution transformer, a voltage deviation value is acquired; if the voltage deviation value exceeds a preset voltage deviation threshold, the difference between the voltage deviation value and the preset voltage deviation threshold is acquired; the difference is integrated to acquire an integralvalue; and the voltage regulation ratio of the distribution transformer is acquired by compensating the initial distribution transformer voltage regulation ratio according to the integral value. Themethod provided by the invention improves the switching speed and accuracy of the voltage regulation ratio of the distribution transformer, can quickly and accurately control a power electronic switch, can effectively adjust the output voltage of the distribution transformer, and provides a foundation for the design of the power electronic on-load voltage regulation distribution transformer.

Description

technical field [0001] The invention relates to the technical field of on-load voltage regulation distribution transformers, in particular to a detection method and system for voltage regulation transformation ratio of a distribution transformer, a control method for a distribution transformer, and a voltage regulation distribution transformer. Background technique [0002] The low-voltage problem of distribution network seriously affects the safe and economical operation of equipment and the high-quality and reliable power supply of users, and has become one of the problems to be solved urgently in distribution network. In the case of sufficient power grid compensation capacity, solving the low voltage problem of the distribution network needs to solve the problem of voltage and reactive power control. Distribution transformer on-load voltage regulation is an effective voltage and reactive power adjustment measure, so it can be installed The transformer can improve the volt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/10H02J3/16H02P13/06
CPCG01R19/10H02J3/16H02P13/06Y02E40/30
Inventor 方健王勇栾乐梁国开覃煜李盛楠尹旷顾春晖
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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