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Intelligent comprehensive control method for distribution transformers

A technology of integrated control of distribution transformers, applied in the field of intelligent integrated control of 10kV distribution transformer economic operation and intelligent integrated control of distribution transformers, can solve problems such as large load changes, low voltage cannot automatically restore power supply, and difficult to determine the operating mode. To achieve the effect of cost saving

Active Publication Date: 2014-06-11
SHANDONG KEHUI POWER AUTOMATION +1
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AI Technical Summary

Problems solved by technology

[0002] The load of a large number of existing power distribution rooms changes greatly, and the operation mode is difficult to determine. When the upper-level power supply of the distribution transformer fails, it will affect the power supply of low-voltage users, or after the upper-level fault is eliminated and the power supply is restored, the low-voltage cannot automatically restore power supply and many other reasons.
The power distribution room with double transformers installed in China is manually controlled whether it is in single-transformer operation, parallel operation or separate operation, and it is impossible to realize the automatic and economical operation of the transformer according to the change of load.

Method used

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Embodiment Construction

[0039] The following is attached Figure 1-2 The distribution transformer intelligent comprehensive control method of the present invention is further explained:

[0040] like figure 1 Shown:

[0041] The power distribution room of a community consists of transformer high-voltage side switches K1, K2, transformer low-voltage side switches K3, K4, transformer low-voltage side bus tie switch K5, transformers T1, T2, high-voltage side voltage sensors VT1-VT2, low-voltage side voltage sensors VT3-VT4 , composed of high-voltage side current sensors CT1-CT2 and low-voltage side current sensors CT3-CT4.

[0042] like figure 2 Shown:

[0043] According to the actual situation of the site load, the operation mode of the transformer can be automatically adjusted, which is divided into single transformer operation, double transformer separate operation, and double transformer parallel operation.

[0044] The intelligent comprehensive control method of the distribution transformer o...

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Abstract

The invention discloses an intelligent comprehensive control method for distribution transformers, belonging to the field of automatic control of electric systems. The intelligent comprehensive control method comprises the concrete steps of: automatically detecting rated capacities of the transformers by the systems; respectively detecting; when the rated capacity A of the transformer T1 is equal to, more than or less than B, calculating load values of the transformers in real time by distribution monitoring devices; and delaying for a time of delta t, if the condition is still met, determining the transformer which meets the rated capacity to supply power. Compared with the prior art, various running modes of the transformers can be realized according to the load situations, so that the losses of the transformers are reduced to the maximum extent, and the aim of economic running of the transformers is achieved; in addition, when the high-level power faults of the distribution transformers are caused or after the high-level power faults are removed, the intelligent comprehensive control method realizes an automatic power restoration function according to the actual running situation.

Description

technical field [0001] The invention relates to an intelligent comprehensive control method for distribution transformers, in particular to an intelligent comprehensive control method for economical operation of a 10kV distribution transformer, which belongs to the field of automatic control of electric power systems. Background technique [0002] The load of a large number of existing power distribution rooms changes greatly, and the operation mode is difficult to determine. When the upper-level power supply of the distribution transformer fails, it will affect the power supply of low-voltage users, or after the upper-level fault is eliminated and the power supply is restored, the low-voltage cannot automatically restore power supply and many other reasons. The power distribution room with dual transformers installed in China is manually controlled whether it is in single-transformer operation, parallel operation or separate operation, and it is impossible to realize the aut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
Inventor 吴敏杨建平王敬华耿海涛王亮
Owner SHANDONG KEHUI POWER AUTOMATION
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