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An intelligent oil-immersed transformer

An oil-immersed transformer and transformer technology, applied in the field of transformers, can solve the problems that the protection device cannot realize the intelligent function of the intelligent grid, cannot transmit the transformer electrical parameter data from the remote control center, and cannot control the operation of the protection device, etc., so as to achieve the goal of installation and construction. Convenient and fast, convenient and fast installation, and the effect of reducing the links and workload of installation and construction

Active Publication Date: 2011-12-14
冯骏明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (2) The metering cabinet (installed with voltage / current sensors) used for electricity bill metering is also separated from the transformer, which requires a certain amount of installation space
[0011] (3) Although the existing transformer protection device can break the transformer circuit when the transformer fails, it cannot realize the self-judgment of the fault and the function of reporting the fault information, and when the transformer is in normal operation, it cannot be remotely controlled The center transmits the electrical parameter data of the transformer operation. In addition, the remote control center cannot control the protection device to perform related operations. Therefore, the existing protection device cannot realize the intelligent function of the future intelligent grid.

Method used

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  • An intelligent oil-immersed transformer
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  • An intelligent oil-immersed transformer

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Experimental program
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Effect test

Embodiment 1

[0040] like Figure 1~4 As shown, it is an intelligent oil-immersed transformer of the present invention, which includes a box 1 with transformer insulating oil and a transformer 2 installed in the box 1. The box 1 is provided with a high-voltage bushing seat and a low-voltage bushing seat 7 , the transformer 2 has a high-voltage incoming line terminal and a low-voltage outgoing line end, and a sensor module and a protection device are installed in the box body 1, wherein the protection device includes a vacuum interrupter 3 and its operating mechanism and a control module, and the control module is set Outside the casing 1 (not shown), in this embodiment, the operating mechanism adopts a mechanical spring operating mechanism 12 (see image 3 ), the sensor module adopts a voltage transformer 5 and a current transformer 4 for collecting the voltage and current data inside or outside the cabinet 1, and the high-voltage bushing seat is two sets of three-phase bushing seats 61, 62...

Embodiment 2

[0045] like Figure 5-8 As shown, the difference between this embodiment and Embodiment 1 is that the operating mechanism of the protective device adopts a vacuum permanent magnet mechanism 13 (see Figure 8 ); the control module is provided with a computer chip for data signal analysis and judgment, which is used to analyze and judge the internal or external faults of the transformer 2 for the received data signal, and report to the distribution network or the remote control center of the power grid at a higher level, and When it is judged that there is a serious fault, an instruction is sent to the vacuum permanent magnet mechanism 13 to cut off the vacuum interrupter 3 .

[0046] Working process of the present invention is:

[0047] (1) The transformer is in normal working state: the voltage transformer 5 and the current transformer 4 respectively collect the transformer voltage / current data inside or outside the box 1, and transmit the data signal to the control module, a...

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Abstract

The invention discloses an intelligent oil-immersed transformer, which includes a box body containing transformer insulating oil and a transformer installed in the box body, and a sensor module and a protection device are installed in the box body, wherein the protection device includes a vacuum interrupter and a vacuum interrupter. Its operating mechanism and control module, wherein one end of the operating mechanism is connected to the high-voltage bushing seat, the other end is connected to the moving contact of the vacuum interrupter, and the static contact of the vacuum interrupter is connected to the transformer The high-voltage incoming line terminal is connected, and the control module is respectively connected with the operating mechanism and the sensor module, so that the transformer operation electric parameter data collected by the sensor module is subjected to circuit calculation and conversion, and sent to the remote transmission and distribution network. terminal control center, and at the same time send a disconnection command to the operating mechanism when a circuit fault occurs. The present invention does not require additional circuit breaker cabinets, can significantly reduce the installation space of the transformer and its supporting devices, can greatly reduce the links and workload of transformer installation and construction, and makes the installation of the transformer more convenient and quick.

Description

technical field [0001] The invention relates to a transformer, in particular to an intelligent oil-immersed transformer. Background technique [0002] The existing urban power distribution network is generally composed of a substation-level power grid and a distribution-level power grid. The distribution-level power grid often uses a 10 kV transformer. Set up multiple power consumption points on the power grid, and install an electric room equipped with transformers, voltage / current transformers and protection devices for electricity metering at each power consumption point, and 10 kV high-voltage power passes through the distribution network Transformer steps down the voltage and converts it into 220-380 volts of mains electricity for delivery to users. The protection device is to cut off the power supply line to protect the distribution network or the upper-level power grid from being affected and damaged by the fault when the transformer is subjected to faults such as li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/04H02P13/00H01F27/40
Inventor 冯骏明蔡锦伟刘建南林劲辉
Owner 冯骏明