Method for replacing 10kV distributing transformer with charge

A technology of distribution transformers and loads, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., and can solve problems affecting users' electricity consumption and impact

Inactive Publication Date: 2007-10-31
CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER +1
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AI Technical Summary

Problems solved by technology

[0002] With the development of the economy and the improvement of the quality of life of the people, the society has higher and higher requirements for the reliability of power supply. In recent years, the 10kV power distribution network system has developed rapidly, but the power distribution network often has distribution transformers in operation due to overhaul, Technical transformation, overload, external force damage and other reasons need to be replaced. The traditional replacement method is to remove all the loads on the low side of the distribution transformer to be replaced, that is, replace the distribution transformer after a power failure, so that the replacement of the distribution transformer after a power failure will affect the line. For people's life and production electricity consumption, some distribution transformers must be opened when replacing the upper-level switch of the line, which will affect the power consumption of users on the line behind the entire breaking switch, especially for some important loads or sensitive loads greater impact

Method used

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  • Method for replacing 10kV distributing transformer with charge
  • Method for replacing 10kV distributing transformer with charge

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Embodiment Construction

[0045] See Figure 1 and Figure 2, the method of replacing a 10kV distribution transformer with load mainly includes the following steps:

[0046] The first step is to carry out on-site survey and preparation, mainly including:

[0047] ① Survey the site of the high and low voltage conversion system 2 with the distribution transformer 2-1 to be replaced, and determine the specific location of each working point, including the connection points between the fully insulated bypass system 1 and the high and low voltage power grids 3 and 4, the high voltage The access points of flexible cables 1-4, the installation points of fully insulated high-voltage load switches 1-3, the installation points of fully insulated bypass distribution transformers 1-5, the access points of low-voltage flexible cables 1-7, etc.

[0048] ② Judgment on the temporary parallel operation conditions of the distribution transformers, including the same wiring group, the same rated transformation ratio, and t...

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Abstract

The invention discloses a method of replacing 10kV distribution transformer, the method spans a full insulated bypass system which is shunt-wounded with the original high voltage and low voltage conversion system, the full insulated bypass system can replace the original system when the original high voltage and low voltage conversion system is cut to replace the distribution transformer, when the replaced new distribution transformer runs normally, the full insulated bypass system is backouted, the method can replace the distribution transformer which is to be replaced without cutting off load of low voltage side and power off, it do not affect life and production of client.

Description

technical field [0001] The invention relates to a method for replacing a 10kV distribution transformer with load. Background technique [0002] With the development of the economy and the improvement of the quality of life of the people, the society has higher and higher requirements for the reliability of power supply. In recent years, the 10kV power distribution network system has developed rapidly, but the power distribution network often has distribution transformers in operation due to overhaul, Technical transformation, overload, external force damage and other reasons need to be replaced. The traditional replacement method is to remove all the loads on the low side of the distribution transformer to be replaced, that is, replace the distribution transformer after a power failure, so that the replacement of the distribution transformer after a power failure will affect the line. For people's life and production electricity consumption, some distribution transformers mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38
Inventor 黄礼平何晓亮
Owner CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER
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